Chapter 11 - Fertilizer

HORT 201 Exam #3

False

Manure is an example of an inorganic fertilizer

False

A fertilization plan for tomatoes should not be adjusted based on soil test recommendations

True

Loamy soil is generally considered the best for plant growth due to its balanced properties

True

Clay soils tend to retain moisture but may suffer from poor drainage

False

Hydroponic systems are only suitable for growing leafy greens

False

Liebig’s Law of the Minimum states that plant growth is determined by the most abundant nutrient. 

False

Phosphorus (P) is mainly responsible for regulating water balance in plants

True

A well-balanced crop rotation includes both nitrogen-fixing plants and heavy-feeding crops

False

Cover crops only provide benefits when grown as cash crops.

False

A soil test is not necessary when planning a fertilization schedule

False

Liebig’s Law of the Minimum states that plant growth is determined by the most abundant nutrient. 

True

Drip hydroponics delivers nutrients through drip irrigation to plant roots

False

Hydroponics is a method of growing plants in soil with reduced water input

True

Legumes such as clover and vetch fix nitrogen in the soil.

False

Fertilization should always be applied in a single dose at the beginning of the season.

True

Controlled-release fertilizers provide nutrients gradually over time.

True

Soil pH affects nutrient availability for plants

True

Vertical farming allows crops to be grown in multiple layers using artificial lighting

False

Sandy soils have high nutrient-holding capacity

True

A cover crop such as mustard can reduce soil pathogens

True

Potassium (K) plays a key role in enzyme activation and water balance

True

Crop rotation can reduce the need for excessive fertilizer application

True

Phosphorus deficiency causes purplish discoloration of leaves and weak root development

True

Leafy greens like lettuce and spinach are well-suited for hydroponic cultivation

True

Fertilizer formulations like 10-20-20 indicate the percentage of Nitrogen, Phosphorus, and Potassium, respectively

True

Tomatoes require a higher potassium supply compared to nitrogen during fruiting

True

A common issue with nitrogen deficiency is the yellowing of older leaves

True

The three main macronutrients in fertilizers are Nitrogen, Phosphorus, and Potassium

True

Nitrogen (N) is essential for chlorophyll and amino acid synthesis

True

Crop rotation helps prevent soil depletion and reduces pests and diseases.

True

Nitrogen is primarily responsible for root development in plants.

False

Aeroponics is a hydroponic system where plant roots grow in sand

True

Tomatoes, cucumbers, and peppers can all be grown hydroponically