Agricultural prelim

topics

Overview (15%)

• Agricultural systems

• Agricultural history

• Social aspects surrounding agriculture

• boundaries

The farm case study (25%)

• The farm as a unit of production

• Farm management

• Marketing

• Farm technology

• The agricultural workplace

Plant production (30%)

• Plants and their commercial production

• Animals, climate and resource interaction

• Microbes, invertebrates and pests

• Technology

• Experimental design and research

• Farming plants - wheat, lucerne, canola, etc

Animal production (30%)

• Animals and their commercial production

• Plants, climate and resource interaction

• Microbes, invertebrates and pests

• Technology

• Experimental design and research

• Animal reproduction and production

• Dairy cow production

overview

1. Agricultural Systems

⭐ What is an agricultural system?

An agricultural system is the way agricultural activities are organised to produce food, fibre and other products.

Think:

INPUTS → PROCESSES → OUTPUTS

🔄 Agricultural system model

🧠 Easy memory trick

I → P → O

Inputs → Processes → Outputs

🌱 Types of agricultural systems

1. Cropping systems

Growing plants/crops for food, fibre or other products.

Examples:

• Wheat

• Cotton

• Rice

• Canola

• Vegetables

Important factors:

• Soil fertility

• Rainfall/water

• Temperature

• Pests and diseases

• Fertilisers

• Machinery

2. Livestock systems

Raising animals for agricultural products.

Examples:

• Cattle → beef/milk

• Sheep → meat/wool

• Chickens → meat/eggs

• Pigs → pork

Important factors:

• Feed

• Water

• Housing

• Animal health

• Breeding

• Disease management

• Welfare

3. Mixed farming

A combination of crop production + livestock production.

Example:
A farm grows wheat and raises sheep.

Advantages

• Spreads financial risk

• Animal manure can improve soil

• Crop residues can feed livestock

• Different enterprises can support each other

Disadvantages

• More management required

• More equipment may be needed

• Farmers need knowledge of multiple enterprises

4. Intensive agriculture

Production is concentrated on a small area, with high levels of inputs.

Examples:

• Intensive poultry

• Dairy farming

• Greenhouse production

Characteristics:

• High labour

• High capital investment

• High inputs

• High production per area

🧠 INTENSIVE = lots going IN

5. Extensive agriculture

Production occurs over a large area, generally with fewer inputs per hectare.

Examples:

• Cattle grazing

• Sheep grazing

• Large-scale cropping

Characteristics:

• Large areas of land

• Lower inputs per hectare

• Often relies more heavily on natural rainfall

• Lower production per hectare compared with intensive systems

🧠 EXTENSIVE = lots of land

⚙️ Factors affecting agricultural systems

Agricultural systems are affected by physical, economic, social and technological factors.

🌦️ Physical factors

• Climate

• Rainfall

• Temperature

• Soil type

• Water availability

• Topography

• Pests and diseases

💰 Economic factors

• Production costs

• Product prices

• Labour costs

• Market demand

• Availability of finance

• Transport costs

👥 Social factors

• Population

• Consumer preferences

• Lifestyle

• Labour availability

• Community expectations

💻 Technological factors

• Machinery

• Automation

• GPS

• Drones

• Artificial intelligence

• Genetic technologies

• Precision agriculture

🧠 Memory trick:

P-E-S-T

Physical
Economic
Social
Technological

2. 🌾 Agricultural History

Agriculture has changed significantly over time due to technology, population growth, scientific discoveries and changing consumer demands.

🏕️ Hunter-gatherer societies

Before agriculture, humans mainly survived by:

• Hunting animals

• Fishing

• Gathering plants

• Moving between locations

They were generally nomadic.

🌱 Agricultural Revolution

The Agricultural Revolution occurred when humans began deliberately growing crops and domesticating animals.

This resulted in:

• Permanent settlements

• Increased food production

• Population growth

• Development of villages and towns

• Development of specialised jobs

🧠 Remember:

HUNT → FARM → SETTLE

🚜 Mechanisation

Agriculture gradually moved from relying heavily on human and animal labour to using machinery.

Examples:

• Ploughs

• Tractors

• Harvesters

• Irrigation equipment

• Milking machines

Effects of mechanisation

✅ Increased productivity
✅ Reduced manual labour
✅ Faster production
✅ Larger farms became possible

❌ Expensive machinery
❌ Greater fuel/energy use
❌ Can contribute to soil compaction
❌ Some agricultural jobs were reduced

🧪 Scientific Revolution in agriculture

Scientific discoveries improved agricultural production.

Developments included:

• Fertilisers

• Pesticides

• Improved animal nutrition

• Selective breeding

• Plant breeding

• Disease control

• Irrigation

These technologies helped farmers produce more food from available land.

🌾 Green Revolution

The Green Revolution involved major increases in agricultural production through improved:

• Crop varieties

• Fertilisers

• Irrigation

• Pest control

• Machinery

• Farming practices

Main goal:

Increase food production and improve food security.

Benefits

• Higher crop yields

• Increased food supply

• Improved food security

• More efficient production

Problems

• Increased chemical use

• Water use

• Soil degradation

• Loss of biodiversity in some systems

• Environmental impacts

💻 Modern agriculture

Modern agriculture increasingly uses technology to make production more efficient, productive and sustainable.

Examples:

Precision agriculture

• GPS

• Sensors

• Drones

• Satellite imagery

• Variable-rate technology

Smart livestock technology

• Electronic identification

• Sensors

• Smart collars

• Rumen boluses

• Automated monitoring

Biotechnology

• Genetic selection

• Genomic technologies

• Biotechnology applications

Main aim:

Produce more efficiently while reducing unnecessary inputs and environmental impacts.

🕰️ Agricultural history — easy timeline

Hunter-gatherers
↓
Domestication of plants & animals
↓
Permanent settlements
↓
Animal-powered farming
↓
Mechanisation
↓
Scientific agriculture
↓
Green Revolution
↓
Precision / digital agriculture

🧠 Memorise this as:

H-D-S-M-S-G-P

3. 👥 Social Aspects Surrounding Agriculture

Agriculture isn't just about producing food. It affects people, communities and society.

👨‍👩‍👧 Rural communities

Agriculture provides:

• Employment

• Income

• Food

• Community connections

• Regional economic activity

Agricultural industries support other businesses such as:

• Transport

• Machinery suppliers

• Veterinary services

• Feed suppliers

• Processing facilities

🧠 Key idea:

FARM → JOBS → BUSINESSES → COMMUNITY

👷 Employment

Agriculture creates employment in areas such as:

• Farming

• Animal production

• Horticulture

• Agricultural science

• Agribusiness

• Machinery

• Transport

• Processing

• Marketing

• Veterinary services

However, mechanisation and automation can reduce the need for some manual labour.

🛒 Consumer expectations

Consumers influence agriculture through what they buy and value.

Consumers may demand:

• Affordable food

• High-quality food

• Safe food

• Locally produced food

• Organic products

• Ethically produced products

• Environmentally sustainable products

• Animal welfare

Example:

If consumers become more concerned about animal welfare, producers may change:

Production methods → animal welfare practices → marketing

🐄 Animal welfare

Animal welfare is concerned with the health, wellbeing and appropriate treatment of animals.

Farmers need to consider:

• Food

• Water

• Shelter

• Health

• Handling

• Transport

• Disease prevention

• Appropriate living conditions

Why does it matter?

Because it affects:

• Ethical expectations

• Productivity

• Product quality

• Consumer confidence

• Industry reputation

🌏 Environmental expectations

Society increasingly expects agriculture to protect natural resources.

Agriculture can affect:

• Soil

• Water

• Air

• Biodiversity

• Ecosystems

Farmers can respond through:

• Sustainable farming

• Water conservation

• Soil conservation

• Integrated pest management

• Recycling

• Waste management

• Biodiversity protection

🧑‍🌾 Aboriginal and Torres Strait Islander connections to agriculture

Aboriginal and Torres Strait Islander peoples have deep and diverse knowledge of Country, plants, animals and environmental management.

Traditional knowledge can involve:

• Understanding seasonal changes

• Knowledge of native plants and animals

• Sustainable harvesting

• Fire management

• Water management

• Caring for Country

Important concept:

Caring for Country = managing the environment while maintaining cultural, ecological and community connections.

🏙️ Urbanisation

Urbanisation is the movement of people from rural areas into towns and cities and the growth of urban areas.

Effects on agriculture:

Positive:

• Larger nearby markets

• Increased demand for food

• Opportunities for urban agriculture

Negative:

• Loss of agricultural land

• Increased competition for water

• Higher land prices

• Less agricultural labour in some areas

🌍 Globalisation

Globalisation means countries and economies becoming increasingly connected.

Agriculture is affected through:

• International trade

• Imports and exports

• Global prices

• International competition

• New technologies

• Consumer trends

Example:

Australian farmers may produce products for overseas markets such as:

• Beef

• Wool

• Wheat

• Dairy

• Cotton

💰 Food security

Food security means people have reliable access to enough safe and nutritious food.

Agriculture contributes to food security by:

• Producing food

• Improving productivity

• Maintaining reliable production

• Managing resources sustainably

Threats to food security:

• Drought

• Floods

• Climate change

• Pests and diseases

• War/conflict

• Population growth

• Water shortages

🧠 THE WHOLE TOPIC IN ONE PAGE

🌾 AGRICULTURAL SYSTEMS

Inputs → Processes → Outputs

Types:

• Cropping

• Livestock

• Mixed

• Intensive

• Extensive

Factors: PEST

• Physical

• Economic

• Social

• Technological

🕰️ AGRICULTURAL HISTORY

Hunter-gatherer
↓
Domestication
↓
Settlements
↓
Mechanisation
↓
Scientific agriculture
↓
Green Revolution
↓
Precision agriculture

👥 SOCIAL ASPECTS

Think "PEACE":

P — Population & communities
E — Employment & economy
A — Animal welfare
C — Consumers & culture
E — Environment & ethics

farm case study

I’d use Sapphire Coast Dairy-Homestead in Bega, NSW, because there is reliable information available from Dairy Australia. It is a 376-hectare family dairy farm, has been in the family since 1908, milks about 280 Holstein cows twice a day, and uses technologies such as heat sensors and milk metres.

🐄 FARM CASE STUDY — SAPPHIRE COAST DAIRY-HOMESTEAD

📍 Case Study Snapshot

1. 🌱 THE FARM AS A UNIT OF PRODUCTION

What does this mean?

A farm as a unit of production means looking at the farm as a system where different resources are combined to produce an agricultural product.

🧠 Remember:

LAND + LABOUR + CAPITAL + MANAGEMENT → PRODUCTION

Inputs

Natural resources

• 376 hectares of land

• Pasture

• Water

• Climate

Animals

• Approximately 280 Holstein cows

Capital

• Milking equipment

• Sheds

• Fencing

• Machinery

• Sensors

• Milk metres

Labour

• Family members

• Farm workers

Management

• Planning feeding

• Monitoring animal health

• Managing pasture

• Managing finances

• Making production decisions

Processes

The farm uses its inputs to:

1. Maintain pasture

2. Feed and care for cows

3. Monitor animal health

4. Milk cows twice a day

5. Monitor milk production

6. Manage the land and herd

Outputs

The main output is:

🥛 Milk

There may also be secondary outputs such as:

• Calves

• Breeding animals

• Manure

🧠 Exam sentence

Sapphire Coast Dairy-Homestead operates as a unit of production by combining land, livestock, labour, capital and management to produce milk efficiently.

2. 👨‍🌾 FARM MANAGEMENT

What is farm management?

Farm management is the process of making decisions about how farm resources should be used to achieve the farm's goals.

🧠 Easy definition:

Farm management = PLAN → DO → MONITOR → CHANGE

Management decisions on Sapphire Coast Dairy

🐄 Livestock management

Farmers need to manage:

• Cow health

• Nutrition

• Breeding

• Milk production

• Animal welfare

• Disease prevention

The farm uses heat sensors and milk metres to collect information about individual cows and production.

🌱 Pasture management

Farmers need to make decisions about:

• Pasture growth

• Grazing

• Water

• Feed availability

• Soil condition

Good pasture management helps provide cows with suitable feed.

💰 Financial management

The farmer needs to consider:

• Feed costs

• Labour

• Machinery

• Animal health

• Infrastructure

• Milk income

• Technology costs

The aim is to keep the farm financially sustainable.

🌦️ Risk management

Farmers cannot control everything.

Risks include:

• Drought

• Floods

• Disease

• Changing milk prices

• Feed costs

• Labour availability

The farmer must plan for these risks.

3. 📢 MARKETING

What is marketing?

Marketing is how agricultural products are promoted and sold to consumers or businesses.

For a dairy farm:

COW → MILK → PROCESSING → CONSUMER

The farm produces milk, which enters the wider dairy supply chain.

Marketing factors

🥛 Product

The product is milk.

The quality of the milk is important because poor-quality milk can affect:

• Price

• Consumer confidence

• Processing

• Farm reputation

💰 Price

Farm income depends partly on the price received for milk.

Farmers need to consider:

• Production costs

• Market conditions

• Milk prices

• Quality

• Demand

📍 Place

Milk needs to move efficiently from the farm into the processing and distribution system.

📢 Promotion

Australian dairy farms and the wider dairy industry can promote:

• Australian-produced food

• Quality

• Animal welfare

• Sustainability

• Local production

The Sapphire Coast Dairy-Homestead also allows visitors to experience a working dairy farm, helping consumers understand where dairy products come from.

4. 🤖 FARM TECHNOLOGY

This is one of the strongest parts of this case study.

Sapphire Coast Dairy uses:

🌡️ Heat sensors

Sensors can help identify when cows are showing signs associated with being on heat.

This can help with:

Breeding management → reproductive efficiency

🥛 Milk metres

Milk metres measure milk production.

This provides information that farmers can use to:

• Monitor individual cows

• Identify changes in production

• Make management decisions

• Improve efficiency

The farm currently uses heat sensors and milk metres and has plans to introduce robotics for feeding and milking.

🤖 Robotic technology

Automatic milking systems are already being used on Australian dairy farms.

The cow enters the robotic milking system and an electronic transponder identifies the animal. A robotic arm attaches the milking equipment, while sensors determine when milking should finish.

Benefits

✅ Reduces labour requirements
✅ Saves time
✅ Collects data
✅ Allows individual cow monitoring
✅ Can improve efficiency
✅ Can help detect health problems

Disadvantages

❌ High initial cost
❌ Requires technical knowledge
❌ Technology can break down
❌ Requires reliable infrastructure and power

💻 Technology + farm management

This is an important connection for exam answers.

Technology doesn't just make the farm "more modern".

It provides information that helps farmers make better management decisions.

For example:

Milk metre → production data → farmer identifies changes → management decision → improved efficiency

Australian research also shows that electronic identification and herd-management technologies are commonly used in dairy farming, while cost, skills and internet access can limit technology adoption.

5. 👷 THE AGRICULTURAL WORKPLACE

The agricultural workplace includes the people, conditions, responsibilities, safety requirements and skills involved in farming.

👨‍🌾 Workers may be responsible for:

• Milking

• Feeding

• Animal health

• Cleaning

• Machinery

• Pasture management

• Maintenance

• Record keeping

• Monitoring technology

• General farm duties

Dairy Australia identifies animal care, milking, land management and business management as important parts of dairy farming.

🦺 Workplace safety

Agriculture can involve hazards such as:

• Animals

• Machinery

• Chemicals

• Electricity

• Slippery surfaces

• Heavy equipment

• Vehicles

• Manual handling

Safety management includes:

IDENTIFY → ASSESS → CONTROL → MONITOR

For example:

Hazard: Large machinery
↓
Risk: Worker injury
↓
Control: Training, guards, safe operating procedures and PPE
↓
Monitor: Regular inspections and review

👥 Skills required

Modern agricultural workers need both practical and technological skills.

Practical skills

• Animal handling

• Machinery operation

• Milking

• Feeding

• Maintenance

Management skills

• Planning

• Financial management

• Record keeping

• Decision-making

Technology skills

• Using sensors

• Reading data

• Computer systems

• Farm management software

This shows that agriculture is increasingly a high-skill industry, not just physical labour. ABARES data shows dairy farms employ managers, skilled workers and machine operators, among others.

🧠 THE 5 AREAS — SUPER EASY VERSION

Memorise P-M-M-T-W:

🌱 P — Production

What does the farm produce?

→ Milk from ~280 Holstein cows.

👨‍🌾 M — Management

How does the farmer run it?

→ Animals + pasture + money + labour + risk.

📢 M — Marketing

How does the product reach the market?

→ Milk → processing → distribution → consumer.

🤖 T — Technology

What technology helps?

→ Heat sensors + milk metres + future robotics.

👷 W — Workplace

Who works there and how do they stay safe?

→ Farmers/workers + animal care + machinery + WHS.

⭐ EXAM-READY CASE STUDY PARAGRAPH

Sapphire Coast Dairy-Homestead in Bega, NSW, is a 376-hectare family-owned dairy farm that demonstrates the five components of a farm as a unit of production. The farm combines natural resources, approximately 280 Holstein cows, labour, capital and management to produce milk. Farm management involves monitoring animal health, pasture, production and finances, while technology such as heat sensors and milk metres provides information to support management decisions. The farm's milk enters the wider dairy marketing and processing system, where product quality and market conditions influence profitability. Modern technology such as automated milking systems can improve efficiency, reduce labour requirements and provide data about individual cows. Finally, the agricultural workplace requires workers to have skills in animal handling, machinery, technology and farm management while following workplace health and safety procedures.

🔥 One sentence for each syllabus dot point:

Farm as a unit of production:

Inputs are combined through farm processes to produce outputs.

Farm management:

Farmers plan, organise and monitor resources to achieve production and financial goals.

Marketing:

Marketing connects agricultural products with buyers and consumers.

Farm technology:

Technology improves efficiency, monitoring, decision-making and productivity.

Agricultural workplace:

Agriculture requires skilled workers who manage animals, machinery, technology and workplace safety.

find names of the famers and operastors in the farm and put what there input is

Yep. I checked the farm's current information, and there are three named family members publicly identified as running Sapphire Coast Dairy-Homestead: Norm Pearce, Narelle Pearce and their son Thomas Pearce. Dairy Australia specifically describes Norm as the fourth-generation farmer and says he runs the farm with Narelle and Thomas.

🐄 Sapphire Coast Dairy — People and their inputs

plant production

1. 🌾 Plants and Their Commercial Production

What is plant production?

Plant production is the growing and harvesting of plants for a commercial purpose.

Plants can be produced for:

• 🍞 Food — wheat, rice, vegetables

• 🥤 Beverages — coffee, tea, grapes

• 👕 Fibre — cotton

• 🛢️ Oil — canola, sunflower

• 🌱 Animal feed — pasture, lucerne

• 🌳 Timber — pine, eucalyptus

• 🌸 Ornamentals — flowers and nursery plants

🌱 Factors affecting plant growth

Plants need several basic requirements to grow.

🧠 Remember: L-W-A-N-T-S

L — Light
W — Water
A — Air
N — Nutrients
T — Temperature
S — Soil/support

☀️ Light

Plants need light for photosynthesis.

More suitable light → generally more photosynthesis → greater potential growth.

💧 Water

Water is needed for:

• Photosynthesis

• Transporting nutrients

• Cell growth

• Maintaining plant structure

Too little → water stress/wilting

Too much → waterlogging/root problems

🌬️ Air

Plants require:

• Carbon dioxide for photosynthesis

• Oxygen for respiration

🧪 Nutrients

Important nutrients include:

Macronutrients

• Nitrogen (N)

• Phosphorus (P)

• Potassium (K)

Micronutrients

• Iron

• Zinc

• Boron

• Copper

🌡️ Temperature

Every plant has a suitable temperature range.

Too cold → slow growth/frost damage
Too hot → heat stress/water loss

🌱 Soil

Soil provides:

• Physical support

• Water

• Nutrients

• Root environment

Important soil properties include:

• pH

• Structure

• Texture

• Fertility

• Drainage

🌿 Photosynthesis

This is VERY important.

Plants use light energy to convert:

Carbon dioxide + water → glucose + oxygen

Why is photosynthesis important?

Glucose provides energy/material for:

• Growth

• Respiration

• Reproduction

• Storage

• Production of plant tissues

🧠 Easy memory:

CO₂ + H₂O + LIGHT → FOOD + O₂

🌱 Plant growth vs development

Growth

An increase in size, mass or number of cells.

Examples:

• Taller plant

• Larger leaves

• Increased root mass

Development

Changes in the plant's structure and function as it matures.

Examples:

• Seed → seedling

• Vegetative growth → flowering

• Flower → fruit

🌾 Commercial plant production

Commercial production involves producing plants in a way that is:

• Productive

• Profitable

• Efficient

• Sustainable

• Suitable for the market

Basic production sequence:

Select crop
↓
Prepare soil
↓
Plant
↓
Manage crop
↓
Monitor pests/diseases
↓
Harvest
↓
Process/store
↓
Market

2. 🌦️ Animals, Climate and Resource Interaction

This section is about how plants interact with animals, climate and available resources.

Think of agriculture as a system, not separate parts.

🌱 PLANT ↔ ANIMAL ↔ CLIMATE ↔ RESOURCES

🐄 Plants and animals

Animals can affect plant production by:

Grazing

Animals eat pasture/crops.

Benefits:

• Provides animals with feed

• Can control pasture growth

• Can recycle nutrients through manure

Problems if poorly managed:

• Overgrazing

• Soil compaction

• Erosion

• Loss of vegetation

Manure

Animal manure returns nutrients to soil.

For example:

Animal eats plant → animal produces manure → nutrients return to soil → plants use nutrients

This is a nutrient cycle.

🌧️ Climate

Climate includes long-term patterns of:

• Temperature

• Rainfall

• Wind

• Humidity

• Solar radiation

Climate affects:

🌱 Plant growth
💧 Water availability
🐛 Pest populations
🦠 Disease
🌾 Crop yield
🐄 Livestock production

🌡️ Temperature

Temperature affects:

• Germination

• Photosynthesis

• Respiration

• Flowering

• Fruit development

Extreme temperatures can cause stress.

💧 Rainfall

Rainfall provides water for plant growth.

Too little:

Drought → water stress → reduced growth → lower yield

Too much:

Flooding → waterlogging → root damage → reduced growth

🌬️ Wind

Strong winds can:

• Damage plants

• Increase water loss

• Cause soil erosion

• Spread some pests/diseases

Windbreaks can help reduce these effects.

💧 Agricultural resources

Important resources include:

• Land

• Water

• Soil

• Sunlight

• Nutrients

• Labour

• Energy

• Capital

Sustainable resource management means:

Using resources today without reducing their ability to support future production.

🧠 Easy chain

Climate → Resources → Plant growth → Production

For example:

Low rainfall → reduced water availability → reduced plant growth → lower yield.

3. 🦠 Microbes, Invertebrates and Pests

This is about organisms that can be either beneficial or harmful to plant production.

🦠 Microbes

Microbes/microorganisms are very small organisms.

Examples:

• Bacteria

• Fungi

• Some microscopic algae

• Protozoa

✅ Beneficial microbes

Microbes can help agriculture.

Decomposers

Break down dead organic matter.

Dead material → decomposition → nutrients released → plants use nutrients

Nitrogen-fixing bacteria

Some bacteria form relationships with plants such as legumes.

They help convert atmospheric nitrogen into forms plants can use.

Mycorrhizal fungi

Some fungi form relationships with plant roots and can help plants obtain:

• Water

• Nutrients, especially phosphorus

❌ Harmful microbes

Some microbes cause plant diseases.

Examples include:

• Fungal diseases

• Bacterial diseases

• Viral diseases

Disease can cause:

• Reduced growth

• Reduced yield

• Poor-quality produce

• Plant death

🐛 Invertebrates

Invertebrates = animals without a backbone.

Examples:

• Insects

• Mites

• Snails

• Slugs

• Worms

Not all invertebrates are pests.

🐝 Beneficial invertebrates

Examples:

Bees

Pollinate flowers.

Predatory insects

Some insects eat pest species.

Example:

Ladybirds → eat aphids

Earthworms

Can help:

• Break down organic matter

• Improve soil structure

• Cycle nutrients

🐛 Pests

A pest is an organism that causes an unwanted effect on agricultural production.

Examples:

🌿 Integrated Pest Management — IPM

Integrated Pest Management (IPM) uses a combination of methods to manage pests.

🧠 Remember:

MONITOR → IDENTIFY → CONTROL → REVIEW

Methods include:

Biological

• Use natural predators

Chemical

• Use pesticides when appropriate

Cultural

• Crop rotation

• Hygiene

• Remove infected material

Physical

• Barriers

• Traps

• Hand removal

The aim is to control pests while minimising unnecessary environmental impacts.

4. 🤖 Technology

Technology is used throughout plant production to improve:

• Productivity

• Efficiency

• Accuracy

• Quality

• Resource management

• Sustainability

🚜 Examples of agricultural technology

GPS

Used for:

• Tractor guidance

• Mapping

• Precision application

🚁 Drones

Can monitor:

• Crop health

• Water stress

• Pest problems

• Weed distribution

🛰️ Satellite imagery

Can identify differences in:

• Crop growth

• Vegetation

• Moisture

💧 Irrigation technology

Examples:

• Drip irrigation

• Sprinklers

• Centre pivots

Drip irrigation

Delivers water directly around the plant root zone.

Benefits:

• Efficient water use

• Reduces evaporation

• Can deliver water accurately

🧪 Sensors

Sensors can monitor:

• Soil moisture

• Temperature

• Humidity

• Nutrients

• Plant conditions

The information can help farmers make decisions.

🧠 Example:

Soil moisture sensor
↓
Measures soil moisture
↓
Farmer receives data
↓
Irrigation decision
↓
Water applied when needed

🎯 Precision agriculture

Precision agriculture uses technology and data to manage different parts of a farm according to their specific needs.

Instead of:

"Treat the whole paddock the same."

Farmers can:

Apply the right input, in the right place, at the right rate, at the right time.

Benefits

✅ Reduced input waste
✅ Improved productivity
✅ Better resource management
✅ Lower environmental impact
✅ Better decision-making

5. 🔬 Experimental Design and Research

This is one of the areas you should really know well, because you can be asked to design or evaluate an experiment.

🧪 What is an experiment?

An experiment is a controlled investigation designed to test a hypothesis.

Example:

Does increasing nitrogen fertiliser increase wheat growth?

🧠 Variables

Independent variable

The variable you deliberately change.

Example:

Amount of nitrogen fertiliser.

🧠 Independent = I change it.

Dependent variable

The variable you measure.

Example:

Plant height.

🧠 Dependent = Data depends on what I change.

Controlled variables

Things that are kept the same.

Examples:

• Plant species

• Pot size

• Soil type

• Amount of water

• Temperature

• Light

• Experiment duration

🧠 Easy:

I change ONE thing and measure ONE thing while keeping everything else the SAME.

⭐ The 4 BIG experimental design principles

These are extremely important.

1. Control

A control provides a comparison.

Example:

Group A = no fertiliser
Group B = fertiliser

The no-fertiliser group is the control.

2. Replication

Replication = repeating the experiment or using multiple experimental units.

Example:

Instead of testing one plant:

Test 10 plants per treatment.

Why?

It increases reliability and reduces the effect of random variation.

3. Randomisation

Randomisation = assigning experimental units randomly.

Example:

Randomly decide which plants receive Treatment A or B.

Why?

Reduces bias.

4. Standardisation

Keep conditions the same wherever possible.

Example:

All plants receive:

• Same soil

• Same pot size

• Same amount of water

• Same light

• Same temperature

Why?

So differences are more likely to be caused by the independent variable.

📊 Reliability vs Validity

Reliability

Would I get similar results if I repeated the experiment?

Improved by:

• Replication

• Consistent methods

• Larger sample size

Validity

Did the experiment actually test what I intended to test?

Improved by:

• Controlling variables

• Appropriate experimental design

• Accurate measurements

🧠 Easy:

RELIABLE = REPEATABLE

VALID = ACTUALLY TESTS THE QUESTION

📈 Data collection

Data can be:

Quantitative

Numbers that can be measured.

Examples:

• Plant height = 25 cm

• Mass = 40 g

• Yield = 5 kg

Qualitative

Descriptions/observations.

Examples:

• Leaves are yellow

• Plant appears wilted

• Pest damage is visible

🧮 Mean

The mean is the average.

Formula:

Mean = total of all values ÷ number of values

Example:

Plant heights:

10, 12, 14, 16, 18 cm

Mean:

70 ÷ 5 = 14 cm

📊 Standard deviation

Standard deviation (SD) shows how spread out data is around the mean.

Low SD

Data is close together.

More consistent results.

High SD

Data is more spread out.

More variation.

🧠 Remember:

LOW SD = LOW SPREAD

🔬 Example experiment

Research question:

Does fertiliser concentration affect plant growth?

Hypothesis:

Increasing fertiliser concentration will increase plant growth up to an optimum level.

Independent variable:

Fertiliser concentration

Dependent variable:

Plant height

Controlled variables:

• Plant species

• Soil

• Pot size

• Water

• Light

• Temperature

• Time

Control:

Plants receiving no additional fertiliser.

Replication:

Use multiple plants in each treatment.

Randomisation:

Randomly allocate plants to treatments.

Standardisation:

Keep growing conditions identical.

Data:

Measure plant height every week.

Analysis:

Calculate:

• Mean

• Standard deviation

• Graph results

Conclusion:

Determine whether the results support or reject the hypothesis.

🧠 PLANT PRODUCTION — ONE-PAGE MEMORY SHEET

🌱 1. PLANTS

L-W-A-N-T-S

• Light

• Water

• Air

• Nutrients

• Temperature

• Soil

🌦️ 2. INTERACTIONS

PLANTS ↔ ANIMALS ↔ CLIMATE ↔ RESOURCES

Climate affects resources → resources affect plants → plants support animals → animals can affect soil and plants.

🦠 3. ORGANISMS

Good:

Microbes → nutrient cycling

Bees → pollination

Predators → pest control

Earthworms → soil improvement

Bad:

Pests → crop damage

Pathogens → disease

🤖 4. TECHNOLOGY

Think:

GPS + DRONES + SENSORS + IRRIGATION + DATA

Used to improve:

EFFICIENCY + PRODUCTIVITY + SUSTAINABILITY

🔬 5. EXPERIMENTS

C-R-R-S

Control
Randomisation
Replication
Standardisation

And:

Independent = CHANGE

Dependent = MEASURE

Controlled = SAME

Reliable = REPEATABLE

Valid = ACTUALLY TESTS THE QUESTION

These experimental-design principles are specifically reflected in the NSW Agriculture syllabus, which expects students to recognise control, randomisation, replication and standardisation and to collect and analyse data.

⭐ The entire 30% in one sentence:

Plant production depends on understanding plant growth, interactions with animals and the environment, beneficial and harmful organisms, modern technology, and scientifically designed experiments to improve agricultural productivity and sustainability.

animal production

1. 🐄 Animals and Their Commercial Production

What is animal production?

Animal production is the management of animals to produce a commercial product.

Examples

Main aim

Farmers aim to produce animals that are:

• Healthy

• Productive

• Efficient

• Profitable

• Well managed

• Appropriate for the environment

🌱 Inputs → Processes → Outputs

Remember the farm as a production system.

INPUTS

• Animals

• Land

• Water

• Feed

• Labour

• Capital

• Technology

• Knowledge

↓

PROCESSES

• Feeding

• Breeding

• Health management

• Growing

• Handling

• Housing

• Monitoring

↓

OUTPUTS

• Meat

• Milk

• Eggs

• Wool

• Fibre

• Breeding animals

🧠 Memory:

INPUTS → ANIMAL MANAGEMENT → PRODUCTS

🐄 Factors affecting animal production

Genetics

Animals inherit characteristics from their parents.

Examples:

• Growth rate

• Milk production

• Wool production

• Disease resistance

• Fertility

Nutrition

Animals need nutrients for:

• Growth

• Maintenance

• Reproduction

• Production

Environment

Includes:

• Temperature

• Rainfall

• Housing

• Water

• Pasture

Health

Disease and parasites can reduce:

• Growth

• Production

• Reproduction

• Profitability

2. 🌱 Plants, Climate and Resource Interaction

Animals don't exist separately from the environment.

Think:

PLANTS → ANIMALS → CLIMATE → RESOURCES

🌾 Plants → Animals

Plants provide animals with:

• Energy

• Protein

• Fibre

• Vitamins

• Minerals

Example:

Pasture → eaten by sheep → nutrients used for growth → wool/meat produced

🐄 Animals → Plants

Animals can also affect plants.

Grazing

Animals remove plant material by eating it.

Good grazing:

• Controls pasture growth

• Provides animal feed

• Can maintain productive pasture

Overgrazing:

• Removes too much vegetation

• Can expose soil

• Can cause erosion

• Reduces pasture productivity

💩 Manure

Animal waste returns nutrients to the soil.

PLANT → ANIMAL → MANURE → SOIL → PLANT

This is part of nutrient cycling.

🌦️ Climate → Animals

Climate affects:

Temperature

Too hot:

Heat stress → reduced feed intake → lower production

Too cold:

Animals use more energy to maintain body temperature.

Rainfall

Rainfall affects:

• Pasture growth

• Water availability

• Feed availability

Drought

Low rainfall → less pasture → less feed → reduced animal production

Extreme weather

Can cause:

• Heat stress

• Cold stress

• Flooding

• Injury

• Death

• Reduced production

💧 Resources

Important resources include:

• Land

• Water

• Feed

• Pasture

• Energy

• Labour

• Capital

Sustainable management

The goal is:

Use resources efficiently without reducing future production.

3. 🦠 Microbes, Invertebrates and Pests

Animals interact with many microorganisms and invertebrates.

Some are beneficial, while others cause disease or production losses.

🦠 Microbes

Microbes include:

• Bacteria

• Viruses

• Fungi

• Protozoa

Beneficial microbes

Some microbes help animals digest food.

This is particularly important in ruminants.

For example:

🐄 Cow eats grass
↓
Microbes in rumen break down plant material
↓
Nutrients become available to the animal

❌ Pathogens

A pathogen is an organism that can cause disease.

Examples include:

• Bacteria

• Viruses

• Fungi

• Protozoa

Disease can cause:

Poor health → reduced production → financial loss

🪱 Invertebrates

Invertebrates are animals without a backbone.

Examples affecting livestock include:

• Ticks

• Lice

• Mites

• Flies

• Worms

These can be parasites or pests.

🪰 Parasites

A parasite lives on or inside another organism and obtains resources from it.

External parasites

Live on the outside of the animal.

Examples:

• Ticks

• Lice

• Mites

Internal parasites

Live inside the animal.

Examples:

• Gastrointestinal worms

• Some protozoa

🐑 Effects of parasites

Parasites can cause:

• Weight loss

• Reduced growth

• Anaemia

• Poor reproduction

• Reduced wool production

• Reduced meat production

• Death in severe cases

🧠 Easy chain:

PARASITE → ANIMAL STRESS → LOWER PRODUCTION

🛡️ Managing pests and disease

Farmers can use:

Biological control

Using living organisms to control pests.

Chemical control

Using appropriate chemicals.

Cultural/management control

• Good hygiene

• Quarantine

• Rotation

• Pasture management

• Good nutrition

Genetic control

Selecting animals with desirable resistance or tolerance.

🧠 Best overall approach:

PREVENT → MONITOR → IDENTIFY → CONTROL → REVIEW

4. 🤖 Technology in Animal Production

Technology helps farmers improve:

• Productivity

• Animal health

• Reproduction

• Welfare

• Efficiency

• Record keeping

• Decision-making

🐄 Electronic identification — EID

Animals can be identified using electronic tags.

The tag allows farmers to record information about an individual animal.

Information can include:

• Identification number

• Weight

• Treatments

• Movement

• Production

• Breeding history

Benefit:

Individual animal → individual data → better management

⚖️ Automatic weighing

Weighing systems can monitor animal growth.

Farmers can identify:

• Fast-growing animals

• Poor performers

• Changes in health

• Appropriate sale time

🌡️ Sensors

Sensors can monitor:

• Body temperature

• Movement

• Activity

• Feeding

• Rumination

This can help identify animals that may require attention.

🐄 Smart rumen boluses

A rumen bolus is a device given orally to a ruminant.

Smart boluses can contain sensors that monitor things such as:

• Temperature

• Activity

• Rumination

• Other internal conditions depending on the device

The information can help farmers identify changes in animal health.

🧠 Easy:

SENSOR → DATA → EARLY WARNING → MANAGEMENT ACTION

🧬 Genetic technology

Genetic technologies can help farmers select animals with desirable characteristics.

Examples:

• High growth rate

• High milk production

• Better wool

• Disease resistance

• Improved fertility

🤖 Automation

Examples:

• Automatic feeders

• Robotic milking

• Automatic weighing

• Climate-controlled housing

Benefits

✅ Saves labour
✅ Improves efficiency
✅ Collects data
✅ Can improve consistency

Disadvantages

❌ Expensive
❌ Requires technical knowledge
❌ Maintenance required
❌ Technology can fail

5. 🧪 Experimental Design and Research

This is basically the same experimental design knowledge as plant production, but the experiments use animals.

🔬 Example animal experiment

Research question:

Does increasing protein in chicken feed affect growth rate?

Independent variable

Protein percentage in feed

🧠 I CHANGE IT

Dependent variable

Chicken weight/growth

🧠 I MEASURE IT

Controlled variables

Keep the same:

• Chicken breed

• Age

• Number of chickens

• Housing

• Temperature

• Water

• Feeding schedule

• Measurement method

🧠 Control

A control group provides a comparison.

Example:

Group A: standard feed
Group B: higher-protein feed

Group A could act as the control depending on the experimental design.

🔁 Replication

Use multiple animals rather than relying on one.

Example:

10 chickens per treatment rather than 1 chicken.

Why?

Animals naturally vary.

Replication makes results more reliable.

🎲 Randomisation

Animals are randomly assigned to treatments.

Why?

Reduces selection bias.

📏 Standardisation

Keep conditions the same.

Example:

All chickens receive:

Same breed + same age + same housing + same water + same temperature.

📊 Reliability vs Validity

Reliability

Can I repeat the experiment and get similar results?

Improved by:

• Replication

• Consistent procedures

• Accurate measurements

Validity

Did my experiment actually test what I wanted to test?

Improved by:

• Controlling variables

• Appropriate experimental design

• Accurate measurements

🐄 ANIMAL REPRODUCTION SYSTEMS

This is an important area to know.

Animal reproduction can be:

🐄 Sexual reproduction

Requires:

Male gamete + female gamete → fertilisation → offspring

The offspring receives genetic material from both parents.

Most livestock production uses sexual reproduction.

♀️ Female reproductive system

Main structures:

Ovaries

Produce:

• Eggs/ova

• Female reproductive hormones

Oviduct/Fallopian tube

Where fertilisation normally occurs.

Uterus

Where the embryo/fetus develops.

Cervix

Opening between the uterus and vagina.

Vagina

Birth canal and reproductive tract.

🧠 Memory:

OVARY → OVIDUCT → UTERUS → CERVIX → VAGINA

♂️ Male reproductive system

Main structures:

Testes

Produce:

• Sperm

• Testosterone

Epididymis

Stores and allows sperm to mature.

Vas deferens

Transports sperm.

Accessory glands

Add fluids to sperm to form semen.

Penis

Transfers semen to the female reproductive tract.

🧠 Easy:

TESTES → EPIDIDYMIS → VAS DEFERENS → PENIS

🐄 Reproductive process

1. Puberty

Animal becomes sexually mature.

2. Oestrous cycle

Females go through reproductive cycles.

3. Oestrus / "heat"

Female is receptive to mating and can become pregnant.

4. Mating or artificial insemination

Sperm is introduced into the female reproductive tract.

5. Fertilisation

Sperm joins with an egg.

6. Pregnancy/gestation

Embryo/fetus develops.

7. Birth

Offspring is born.

🧬 Artificial insemination — AI

Artificial insemination involves placing semen into the female reproductive tract without natural mating.

Benefits

✅ Allows use of desirable genetics
✅ Can reduce need to keep many males
✅ Can improve breeding management
✅ Allows semen from high-performing males to be used widely

Disadvantages

❌ Requires skilled labour
❌ Timing is important
❌ Requires appropriate semen handling
❌ Not always successful

🧬 Selective breeding

Farmers choose animals with desirable characteristics to become parents.

Example:

High-milk-producing cow + high-performing bull
↓
offspring may inherit desirable traits

🧠 Goal:

Increase desirable characteristics in future generations.

🐄 ANIMAL DIGESTIVE SYSTEMS

This is another major exam area.

There are two main types you should know:

🐄 Ruminant

Cattle, sheep, goats

🐖 Monogastric

Pigs, humans

🐄 RUMINANT DIGESTIVE SYSTEM

Ruminants have a specialised stomach with four compartments.

🧠 Memorise:

R-O-O-A

Rumen
Omasum
Omasum? Wait — that's two O's because the correct order is:

Rumen → Reticulum → Omasum → Abomasum

So use:

🧠 R-R-O-A

1. Rumen

The largest compartment.

Its main job is microbial fermentation.

Microbes break down plant material, especially fibre.

The rumen microbes help the animal use nutrients from forage that animals cannot digest efficiently on their own.

2. Reticulum

Works closely with the rumen.

Functions include:

• Mixing digesta

• Sorting particles

• Helping form cud for rumination

Rumination

The animal:

eats → regurgitates → rechews → swallows

This helps break down feed into smaller particles.

3. Omasum

Functions include:

• Absorbing water

• Absorbing some nutrients

• Reducing particle size

🧠 Remember:

OMASUM = absorbs

4. Abomasum

The "true stomach."

It uses:

• Hydrochloric acid

• Digestive enzymes

to digest feed and microbes.

🧠 Remember:

ABOMASUM = ACID

➡️ Full ruminant pathway

MOUTH → RUMEN → RETICULUM → OMASUM → ABOMASUM → SMALL INTESTINE → LARGE INTESTINE → RECTUM → ANUS

🐄 Ruminant digestion — super simple

🌱 Grass

↓

🐄 Mouth

Chewed and swallowed

↓

🦠 Rumen

Microbes ferment plant material

↓

🔄 Reticulum

Helps with rumination

↓

💧 Omasum

Water/nutrients absorbed

↓

🧪 Abomasum

Acid + enzymes digest

↓

🧬 Small intestine

Most nutrient absorption

↓

💩 Large intestine

Water absorption + faeces formation

🐖 MONOGASTRIC DIGESTIVE SYSTEM

A monogastric animal has one main stomach.

Examples:

• Pigs

• Chickens have a specialised digestive system but are not ruminants

• Humans

For a pig:

MOUTH → OESOPHAGUS → STOMACH → SMALL INTESTINE → LARGE INTESTINE → RECTUM → ANUS

🐖 Stomach

The stomach:

• Stores food

• Mixes food

• Uses acid

• Begins significant protein digestion

🧬 Small intestine

This is where most nutrient absorption occurs.

Nutrients pass through the intestinal wall into the body.

💩 Large intestine

Main functions:

• Absorbs water

• Forms faeces

• Contains microbes

🐄 RUMINANT VS MONOGASTRIC

🧠 Easiest way:

RUMINANT = 4 stomach compartments + microbes + fibre

MONOGASTRIC = 1 main stomach

🔥 ANIMAL PRODUCTION — ONE-PAGE MEMORY SHEET

🐄 1. COMMERCIAL PRODUCTION

INPUTS → MANAGEMENT → OUTPUTS

Animals → feed → management → products.

🌱 2. INTERACTIONS

PLANTS → ANIMALS → RESOURCES → CLIMATE

Plants provide feed.

Animals graze and produce manure.

Climate affects feed and water.

🦠 3. MICROBES & PESTS

GOOD:

• Rumen microbes → digestion

• Beneficial microbes → nutrient cycling

BAD:

• Pathogens → disease

• Parasites → production losses

🤖 4. TECHNOLOGY

Remember:

EID + SENSORS + BOLUSES + AI + AUTOMATION

Used for:

MONITORING + REPRODUCTION + HEALTH + PRODUCTIVITY

🧪 5. EXPERIMENTS

C-R-R-S

Control
Randomisation
Replication
Standardisation

Independent = CHANGE

Dependent = MEASURE

Reliability = REPEATABLE

Validity = ACCURATE TEST

🧬 REPRODUCTION

Female:

OVARY → OVIDUCT → UTERUS → CERVIX → VAGINA

Male:

TESTES → EPIDIDYMIS → VAS DEFERENS → PENIS

Process:

PUBERTY → OESTRUS → MATING/AI → FERTILISATION → GESTATION → BIRTH

🐄 DIGESTION

Ruminant:

RUMEN → RETICULUM → OMASUM → ABOMASUM

🧠 R-R-O-A

Rumen = fermentation

Reticulum = rumination

Omasum = absorption

Abomasum = acid

Monogastric:

MOUTH → STOMACH → SMALL INTESTINE → LARGE INTESTINE

🔥 One sentence to memorise the whole topic:

Animal production combines animal biology, nutrition, reproduction, environmental resources, pest and disease management, technology and scientific research to produce healthy and profitable livestock.

fertiliser

What is a fertiliser?

A fertiliser is a substance added to soil or plants to supply essential nutrients needed for plant growth.

🧠 Remember:

Fertiliser = nutrients → plant growth → production

The three main nutrients you need to know are:

• N = Nitrogen

• P = Phosphorus

• K = Potassium

These are called the primary macronutrients.

🌿 1. Nitrogen (N) fertilisers

Main function

Nitrogen is important for:

• 🌱 Leaf and stem growth

• 🌿 Green colour/chlorophyll

• 🌾 Vegetative growth

• Protein production

Signs of nitrogen deficiency

Plants may have:

• Yellowing of older leaves

• Slow growth

• Small plants

• Reduced yield

Common nitrogen fertilisers

⚠️ Important

Nitrogen fertilisers can be easily lost through:

• Leaching

• Volatilisation

• Runoff

Therefore, application needs to be managed carefully.

🌱 2. Phosphorus (P) fertilisers

Main function

Phosphorus is important for:

• 🌱 Root development

• 🌼 Flowering

• 🌾 Seed formation

• Energy transfer

• Early plant establishment

Signs of phosphorus deficiency

Plants may show:

• Poor root development

• Slow growth

• Poor establishment

• Sometimes dark green/purplish leaves

Common phosphorus fertilisers

🧠 Remember:

P = PLANT ROOTS

🌿 3. Potassium (K) fertilisers

Main function

Potassium helps with:

• Water regulation

• Disease resistance

• Plant strength

• Enzyme activity

• Fruit and crop quality

• Stress tolerance

Signs of potassium deficiency

Often include:

• Yellow/brown edges of older leaves

• Weak stems

• Poor growth

• Reduced crop quality

Common potassium fertilisers

🧠 Remember:

K = QUALITY + STRENGTH

🧪 Compound / blended fertilisers

Some fertilisers provide more than one nutrient.

MAP — Monoammonium phosphate

Provides:

N + P

Used where crops require nitrogen and phosphorus.

DAP — Diammonium phosphate

Provides:

N + P

Commonly used as a starter fertiliser for crops.

NPK fertilisers

Provide:

N + P + K

For example:

15:15:15

Means approximately:

• 15% nitrogen

• 15% phosphorus

• 15% potassium

🧠 Remember:

NPK = all three major nutrients

🪨 4. Lime

Lime isn't usually thought of as a conventional NPK fertiliser. It is primarily a soil amendment.

Main use:

Raises soil pH

It can also supply calcium depending on the type of lime.

Used when:

Soil is too acidic.

🧠 Remember:

LIME = LESS ACID

🌱 5. Organic fertilisers

Organic fertilisers come from plant or animal materials.

Examples:

• Animal manure

• Compost

• Blood and bone

• Poultry manure

Benefits

✅ Adds nutrients
✅ Adds organic matter
✅ Can improve soil structure
✅ Supports soil biological activity

Disadvantages

❌ Nutrient concentrations can be variable
❌ Nutrients may be released slowly
❌ Can contain weed seeds/pathogens if poorly managed
❌ Bulky to transport and apply

💧 Forms of fertiliser

This is important when your teacher says "form".

1. Granular

Small solid particles.

Examples:

• Urea

• DAP

• MAP

• Superphosphate

Advantages

• Easy to store

• Easy to spread

• Controlled application rates

2. Powder

Fine solid particles.

Example:

• Some forms of lime

Advantages

• Can react relatively quickly with soil

Disadvantages

• Can be dusty

• Wind can cause application problems

3. Liquid

Dissolved or suspended nutrients applied as a liquid.

Examples:

• Liquid nitrogen

• Liquid fertiliser solutions

Advantages

• Can be applied accurately

• Can be used through irrigation in some systems

4. Gas

Example:

Anhydrous ammonia

It is used mainly in large-scale agriculture and requires specialised equipment and strict safety procedures.

🚜 Methods of fertiliser application

Broadcasting

Fertiliser is spread across the soil surface.

Good for:

• Pastures

• Large cropping areas

Banding

Fertiliser is placed in a band near the seed or plant.

Benefits:

• Places nutrients close to roots

• Can improve nutrient-use efficiency

Side dressing

Fertiliser is applied beside an established crop.

Useful when:

• Crops need additional nutrients during growth.

Fertigation

Fertiliser + irrigation

Nutrients are dissolved in irrigation water and delivered to crops.

Foliar application

Fertiliser is sprayed onto plant leaves.

Useful for:

• Correcting some nutrient deficiencies

• Supplying certain micronutrients relatively quickly

🧠 Fertiliser → Nutrient → Main function

🔥 Super easy memory trick

N = NEEDLE/NEW GROWTH

Think new leaves and shoots

P = PLANT ROOTS

Think roots and reproduction

K = KEEP STRONG

Think water regulation, strength and stress tolerance

So:

N = GROW 🌿
P = ROOT 🌱
K = STRONG 💪

⚠️ Fertiliser overuse

Too much fertiliser can cause:

• Nutrient toxicity

• Salt damage

• Nutrient imbalance

• Water pollution

• Algal blooms

• Eutrophication

🧠 Exam chain:

Too much fertiliser → runoff → nutrients enter waterways → algal growth → oxygen decreases → aquatic organisms affected

Plant types

Plant types:

Plants can be divided into two main types: monocotyledonous and dicotyledonous plants

Differences

Monocotyledonous Plants:

Dicotyledonous Plants:

Monocotyledonous Flowers:

Dicotyledonous Flowers:

Soil

Soil

Soil texture

Soil texture is a description of the amount of each of the main particles. For example clay loam contains 30-35% clay particles

Soil texture influences packing density, aeration, drainage, cultivation and fertility

Sand (course) - 0.02 - 2.0 mm

Silt (medium) - 0.02 - 0.002 mm

Clay(fine) - Less than 0.002

Sand settles in 1 minutes

Silt layer settles in 2 hours

Clay layer settles when the water clears

ribbon

test

The assessment will include testing different soils using ribbon testing and the triangle graph below to determine what soil they are

Example

60% sand - if you don't have all

20% silt figures as long as it

20% clay equals to 100%

Match all the percentages in the triangle and it will show what type of soil it is

boundaries

Legal boundaries

Definition

• Lists of laws, regulations and limitations that protect and restrict how land is used for farming. It can be physical boundaries or environmental regulations, zoning laws or water rights

Examples

• Property ownership titles

• Government zoning

• Property lines

Purpose

• Clearly define the extent of farming property

• Establish legal ownership of land

• Prevent arguments of disputes with neighbours

Physical boundaries

Definition

• Tangible structures or features that mark edges of farms or places where restricted areas end or start. It can include natural boundaries and artificial boundaries

Examples

• Natural - rivers, hills, forests

• Artificial - barbed wire fences, walls, shed, markings

Purpose

• Contain livestock

• Prevent unauthorised access

• Limit what land is owned by the farmer

Functional boundaries

Definition

• Boundaries in a farm to separate different operational areas or separate resources

Examples

• Paddock fencing through farm

• Rotational grazing

• Irrigation ditches

Purpose

• Optimize resources and farm operations

• Separate grazing areas, cropping fields or conservation zones

Environmental boundaries

Definition

• Areas set aside to protect natural ecosystems and ensure sustainable farming practices

Examples

Purpose

• Contain livestock

• Prevent unauthorised access

• Limit what land is owned by the farmer

dairy cows

Different breeds have been selected for different production characteristics, such as milk volume, milk components, heat tolerance and adaptability.

🧠 The BIG 3 to remember

For a Year 11 exam, know these particularly well:

🥛 Holstein

High volume of milk

🧈 Jersey

High milk fat and protein

🐄 Brown Swiss

Milk + high milk solids + hardiness

🥛 3. What does a dairy cow produce?

The main commercial product is:

MILK

Milk can then be processed into:

• 🥛 Drinking milk

• 🧈 Butter

• 🧀 Cheese

• 🍦 Ice cream

• 🥣 Yoghurt

• 🥛 Milk powder

• 🥛 Cream

🐮 4. Other products from dairy cattle

Dairy farms can also produce calves.

Female calves

May be:

• Raised as replacement dairy cows

• Used for future milk production

Male calves

Depending on the production system, they may be:

• Raised for beef

• Sold to other producers

• Managed according to the farm's calf-rearing system

Cows at the end of their productive life

May be sold as cull cows, contributing to the beef supply.

🧠 Remember:

MAIN OUTPUT = MILK

SECONDARY OUTPUTS = CALVES + CULL COWS

🔄 5. Dairy cow production cycle

This is very important.

1. 🐄 Heifer

A heifer is a young female cow that has not yet had a calf.

↓

2. 🧬 Breeding

The heifer is bred when she reaches appropriate reproductive maturity and management targets.

Breeding can occur through:

• Natural mating

• Artificial insemination (AI)

↓

3. 🤰 Pregnancy

The cow carries the developing calf during gestation.

↓

4. 🐮 Calving

The cow gives birth to a calf.

↓

5. 🥛 Lactation

The cow produces milk.

↓

6. 🥛 Milking

The cow is milked regularly, often twice a day in conventional dairy systems, although systems vary.

↓

7. 🧬 Rebreeding

The cow is bred again during the production cycle.

↓

8. 🔄 Next lactation

After another calving, the cow begins another lactation.

🧠 Easy cycle:

HEIFER → BREED → PREGNANT → CALF → MILK → REBREED → REPEAT

🥛 6. Lactation

Lactation is the period when a female animal produces milk after giving birth.

Milk production generally changes throughout the lactation.

Typical pattern:

Calving
↓
Milk production rises
↓
Peak milk production
↓
Milk production gradually decreases
↓
Dry period
↓
Next calving
↓
New lactation

🛑 7. Dry period

The dry period is when a dairy cow is not being milked before the next calving.

It allows the cow to:

• Rest the udder

• Prepare for the next lactation

• Support the developing calf

• Recover body reserves

🧠 Remember:

DRY = REST BEFORE THE NEXT LACTATION

🐄 8. Dairy cow nutrition

A dairy cow needs nutrients for:

🥛 Milk production

Milk contains:

• Water

• Fat

• Protein

• Lactose

• Minerals

🐄 Maintenance

The cow needs nutrients simply to maintain normal body functions.

🤰 Pregnancy

Nutrients are required for fetal development.

🐮 Growth

Young animals require nutrients to grow.

🌱 What do dairy cows eat?

Depending on the farm, diets can include:

Forages

• Pasture

• Hay

• Silage

Concentrates

• Grains

• Protein meals

• Other formulated feeds

Minerals

• Calcium

• Phosphorus

• Salt and other minerals as required

🧠 Easy:

FORAGE + CONCENTRATES + MINERALS + WATER

💧 9. Water

Water is extremely important in dairy production because milk contains a high proportion of water.

Dairy cows need access to clean, good-quality water.

Water requirements can increase with:

• Hot weather

• Higher milk production

• Dry feed

• Increased activity

🌡️ 10. Climate and dairy cows

Climate has a major impact on dairy production.

☀️ Heat stress

Hot conditions can cause cows to:

• Reduce feed intake

• Increase water intake

• Reduce milk production

• Alter behaviour

• Experience reduced reproductive performance

Management strategies

Farmers can provide:

• Shade

• Plenty of water

• Ventilation

• Cooling systems

• Appropriate feeding management

🧠 Exam chain:

HOT WEATHER → HEAT STRESS → LESS FEED → LOWER MILK → LOWER PRODUCTION

🦠 11. Dairy cow health

Common health issues that farmers monitor include:

Mastitis

Inflammation/infection of the mammary gland.

Can cause:

• Reduced milk production

• Changes in milk quality

• Treatment costs

Lameness

Problems affecting the feet/legs.

Can cause:

• Reduced movement

• Reduced feed intake

• Poor welfare

• Reduced production

Metabolic problems

Can occur around calving and early lactation.

Good nutrition and monitoring are important for prevention and management.

🤖 12. Technology in dairy production

Modern dairy farms can use technology to monitor individual cows.

🏷️ Electronic identification

Identifies individual animals.

Can connect a cow with:

• Production records

• Health records

• Breeding information

• Treatment records

🥛 Milk metres

Measure milk production from individual cows.

Farmers can use this information to:

• Monitor production

• Identify changes

• Make breeding decisions

• Manage feeding

🌡️ Heat/activity sensors

Sensors can monitor cow activity and help identify when a cow may be in oestrus (heat).

This can help with:

Breeding → pregnancy → future milk production

🤖 Robotic milking

Robotic systems can:

• Identify individual cows

• Monitor milking

• Record milk production

• Allow cows to be milked according to the system's management schedule

Benefits

✅ Labour efficiency
✅ Individual animal data
✅ Monitoring
✅ Consistent milking

Disadvantages

❌ High initial cost
❌ Maintenance required
❌ Technical skills required

🧬 13. Breeding dairy cows

Farmers select animals based on desirable characteristics.

Desirable traits can include:

• High milk production

• High milk-fat percentage

• High milk-protein percentage

• Good fertility

• Disease resistance

• Good udder health

• Good temperament

• Longevity

🧬 Artificial insemination — AI

Artificial insemination involves placing semen into the female reproductive tract without natural mating.

Why use AI?

It allows farmers to use genetics from desirable bulls.

Benefits:

• Access to superior genetics

• Controlled breeding

• Can reduce the need to keep breeding bulls

• Allows selection for specific traits

🥛 14. Milk composition

Milk contains several major components:

🧠 Important breed comparison:

Holstein → high milk VOLUME

Jersey → higher FAT + PROTEIN concentration

So farmers may select breeds depending on their market and production goals.

💰 15. Factors affecting dairy profitability

A dairy farm needs to produce milk efficiently while controlling costs.

Income

Mainly comes from:

Milk sales

Other income can include:

• Calves

• Cull cows

• Breeding stock

Costs

Include:

• Feed

• Labour

• Animal health

• Electricity

• Water

• Machinery

• Repairs

• Fertiliser

• Infrastructure

🧠 Exam formula:

PROFIT = INCOME − COSTS

⭐ DAIRY COW PRODUCTION — EXAM MEMORY SHEET

🐄 Breeds

Holstein → 🥛 HIGH MILK VOLUME

Jersey → 🧈 HIGH FAT + PROTEIN

Brown Swiss → 🥛 MILK + MILK SOLIDS

🔄 Production cycle

HEIFER → BREED → PREGNANCY → CALF → LACTATION → MILKING → DRY PERIOD → REBREED

🌱 Nutrition

PASTURE/FORAGE + CONCENTRATES + MINERALS + WATER

🤖 Technology

EID + MILK METRES + ACTIVITY SENSORS + AI + ROBOTICS

🥛 Main outputs

MILK → MILK PRODUCTS

Secondary:

CALVES + CULL COWS

☀️ Climate

HEAT → HEAT STRESS → LOWER FEED INTAKE → LOWER MILK PRODUCTION

🔥 One exam-ready sentence

Dairy cow production involves selecting suitable breeds, managing nutrition, reproduction, health and climate, and using technology to maximise milk production, animal welfare, efficiency and profitability.

farming plants

🌾 What is wheat?

Wheat is a major cereal grain crop grown commercially for food, animal feed and industrial products.

Main products

WHEAT GRAIN → FLOUR → BREAD / PASTA / BISCUITS

It can also be used for:

• Animal feed

• Starch

• Some industrial products

🌱 Types of wheat

There are many wheat varieties, selected for different environments and end uses.

Common categories

🧠 Remember:

DURUM = PASTA

🌱 Wheat growth cycle

SEED → GERMINATION → SEEDLING → TILLERING → STEM ELONGATION → FLOWERING → GRAIN FILL → MATURITY → HARVEST

🌾 Tillering

The plant produces additional shoots.

🌼 Flowering

The plant flowers and fertilisation occurs.

🌾 Grain filling

The developing grain accumulates stored materials, including starch.

🚜 Harvest

The mature grain is harvested using a combine harvester.

🌦️ Climate requirements

Wheat generally performs best with:

• Suitable temperatures

• Adequate soil moisture

• Good sunlight

• Suitable growing conditions

Too little water:

Drought → reduced growth → poor grain filling → lower yield

Too much water:

Waterlogging → poor root function → reduced growth

Frost

Frost at sensitive growth stages can damage reproductive structures and reduce yield.

🌱 Soil requirements

Wheat performs best in suitable, fertile soils with:

• Good structure

• Adequate nutrients

• Appropriate pH

• Good drainage

• Adequate moisture

Important nutrients

Nitrogen (N) → leaf growth + grain protein

Phosphorus (P) → root development

Potassium (K) → plant strength + water regulation

🧪 Fertiliser

Nitrogen is particularly important in wheat production.

Example:

Urea → nitrogen → vegetative growth + grain production

But excessive nitrogen can cause problems, including increased lodging risk and environmental losses.

🐛 Wheat pests

Examples include:

• Aphids

• Armyworms

• Cutworms

• Wheat curl mite

Pests can reduce:

• Plant growth

• Grain yield

• Grain quality

🦠 Wheat diseases

Examples:

• Rust diseases

• Septoria

• Fusarium diseases

Management can include:

• Resistant varieties

• Crop rotation

• Seed treatment

• Fungicides where appropriate

• Monitoring

🌱 Weeds

Weeds compete with wheat for:

• Water

• Light

• Nutrients

• Space

Management:

• Herbicides

• Crop rotation

• Cultivation where appropriate

• Competitive crop establishment

🚜 Technology

Modern wheat production can use:

• GPS

• Autosteer

• Drones

• Satellite imagery

• Yield monitors

• Variable-rate fertiliser

• Soil sensors

🧠 Example:

GPS → accurate sowing → less overlap → reduced seed/input waste

🚜 Harvesting

A combine harvester performs several operations.

It:

• Cuts the crop

• Separates grain

• Removes much of the chaff/straw

• Collects the grain

🌾 WHEAT — MEMORY

PRODUCT = GRAIN

DURUM = PASTA

N = GROWTH + PROTEIN

P = ROOTS

WEEDS = COMPETITION

COMBINE = HARVEST

🌿 LUCERNE PRODUCTION

🌿 What is lucerne?

Lucerne, also known as alfalfa, is a perennial legume forage crop.

It is mainly grown as high-quality animal feed.

Main products:

LUCERNE → HAY / SILAGE / PASTURE → ANIMAL FEED

It is particularly valuable because it is relatively high in:

• Protein

• Digestible nutrients

• Minerals

🌱 Why is lucerne important?

Lucerne is a legume.

Legumes have a relationship with Rhizobium bacteria in root nodules.

These bacteria help with nitrogen fixation.

🧠 Easy:

LUCERNE + RHIZOBIUM → NITROGEN FIXATION

This can contribute to nitrogen availability within the farming system.

🌱 Lucerne growth

SEED → GERMINATION → SEEDLING → VEGETATIVE GROWTH → FLOWERING → CUTTING → REGROWTH

Unlike wheat, lucerne can be harvested multiple times because it is a perennial crop.

🌦️ Climate

Lucerne generally performs best with:

• Warm conditions

• Adequate water

• Good sunlight

• Well-drained soil

It does not tolerate waterlogging well.

Waterlogging:

Poor drainage → root problems → reduced growth

🌱 Soil

Lucerne generally prefers:

• Well-drained soil

• Suitable pH

• Good fertility

• Adequate phosphorus

• Adequate potassium

• Appropriate micronutrients

Soil pH is particularly important because lucerne generally performs best in near-neutral soils.

🐄 Uses

Lucerne can be:

🌱 Grazed

Animals eat it directly in the paddock.

🌾 Hay

Lucerne is cut, dried and stored.

🥬 Silage

Lucerne is harvested and preserved by fermentation under controlled conditions.

🐄 Animal feed

It is commonly used for livestock such as:

• Dairy cattle

• Beef cattle

• Sheep

• Horses

🐛 Lucerne pests

Examples include:

• Aphids

• Lucerne flea

• Sitona weevil

• Various caterpillars

Pests can reduce:

• Leaf area

• Plant growth

• Feed quality

• Yield

🦠 Lucerne diseases

Examples include various:

• Root diseases

• Leaf diseases

• Fungal diseases

Management includes:

• Resistant varieties

• Good drainage

• Crop management

• Monitoring

🌿 Lucerne — MEMORY

LUCERNE = LEGUME

RHIZOBIUM = NITROGEN FIXATION

MAIN PRODUCT = ANIMAL FEED

CAN BE CUT MULTIPLE TIMES

GOOD DRAINAGE = IMPORTANT

🌻 CANOLA PRODUCTION

🌻 What is canola?

Canola is an oilseed crop.

Main product:

CANOLA SEED → CANOLA OIL

The remaining meal can also be used as a protein-rich animal feed ingredient.

🌻 Canola uses

Human food

• Cooking oil

• Food products

Animal production

Canola meal can be used as a protein source in animal feeds.

🌱 Growth cycle

SEED → GERMINATION → ROSETTE → STEM ELONGATION → FLOWERING → POD DEVELOPMENT → SEED FILL → MATURITY → HARVEST

🌼 Flowering

Canola produces its characteristic yellow flowers.

🌱 Pods

Seeds develop inside pods.

🌦️ Climate

Canola is generally a cool-season crop.

It requires suitable:

• Temperature

• Rainfall

• Soil moisture

Extreme heat during flowering and grain/seed filling can reduce yield.

🐛 Pests

Examples:

• Aphids

• Diamondback moth

• Rutherglen bug

• Helicoverpa

Management:

MONITOR → IDENTIFY → CONTROL

🦠 Diseases

Examples:

• Blackleg

• Sclerotinia

Management may include:

• Crop rotation

• Resistant varieties

• Seed treatments

• Fungicides where appropriate

🌻 Canola — MEMORY

CANOLA = OIL

SEED → OIL

MEAL → ANIMAL FEED

YELLOW FLOWERS = CANOLA

🌱 COTTON PRODUCTION

What is cotton?

Cotton is a fibre crop.

Main product:

COTTON FIBRE → TEXTILES / CLOTHING

Cotton seed is also a useful co-product and can be processed for oil and feed products.

🌱 Cotton growth

SEED → SEEDLING → VEGETATIVE GROWTH → FLOWERING → BOLL DEVELOPMENT → MATURITY → HARVEST

Boll

The boll is the fruit structure containing the cotton fibres and seeds.

💧 Water

Cotton generally requires significant water, particularly in commercial irrigated production.

Irrigation can be managed using:

• Soil moisture monitoring

• Weather information

• Irrigation scheduling

🐛 Cotton pests

Examples include:

• Helicoverpa

• Aphids

• Whiteflies

Australian cotton production uses integrated pest management (IPM) to manage pests.

🤖 Technology

Cotton production can use:

• GPS

• Precision irrigation

• Sensors

• Drones

• Remote sensing

• Mechanical harvesting

👕 Cotton — MEMORY

COTTON = FIBRE

BOLL = FIBRE + SEED

MAIN USE = TEXTILES

🌾 BARLEY PRODUCTION

Main products

Barley is grown for:

• Animal feed

• Malt

• Food products

🧠 Remember:

BARLEY = FEED + MALT

🌱 Barley growth

Similar to wheat:

SEED → GERMINATION → TILLERING → FLOWERING → GRAIN FILL → MATURITY → HARVEST

🐛 Problems

Can be affected by:

• Weeds

• Aphids

• Armyworms

• Fungal diseases

• Nutrient deficiencies

• Drought

🚜 Technology

Uses similar technology to wheat:

• GPS

• Yield monitors

• Variable-rate application

• Drones

• Precision seeding

🧠 QUICK COMPARISON

🔥 THE 5 TO MEMORISE

🌾 WHEAT

Grain → flour/food

🌿 LUCERNE

Legume → animal feed → nitrogen fixation

🌻 CANOLA

Seed → oil

👕 COTTON

Fibre → textiles

🌾 BARLEY

Grain → animal feed + malt

🧠 Overall plant production cycle:

SELECT VARIETY → PREPARE SOIL → SOW → GERMINATE → GROW → MONITOR → MANAGE PESTS/DISEASE → HARVEST → PROCESS → MARKET