Agriculture Unit-1: Introduction to Crop Production

Comprehensive vocabulary flashcards covering basic agronomic terminology, origins of domesticated crops, plant classifications, photosynthetic pathways, and cropping systems.

Agriculture

The science and practice of cultivating crops and rearing animals for food, fiber, fuel, and other useful products.

Crop

A plant cultivated on a large scale for economic or human use.

Crop production

The process of growing and managing crops from land preparation through harvesting and storage.

Cultivation

The preparation and use of land for growing crops.

Agronomy

The branch of agricultural science dealing mainly with crop production, soil management, and related practices.

Horticulture

The science and practice of producing fruits, vegetables, flowers, and ornamental plants.

Seed

A mature fertilized ovule capable of developing into a new plant.

Germination

The process by which a seed begins to grow and develop into a seedling under suitable conditions.

Seedling

A young plant that develops from a germinated seed.

Plant population

The number of plants growing in a given unit area of land.

Yield

The quantity of useful crop product obtained per unit area.

Harvesting

The process of collecting a mature crop from the field.

Weed

A plant growing where it is unwanted, especially among cultivated crops.

Pest

An organism that causes damage to crops, including insects, mites, rodents, birds, and other harmful organisms.

Disease

A harmful disturbance of normal plant growth caused by pathogens or unfavorable environmental conditions.

Fertilizer

A natural or manufactured material applied to soil or plants to supply essential nutrients.

Irrigation

The artificial application of water to crops.

Tillage

The mechanical manipulation of soil for purposes such as seedbed preparation, weed control, and incorporation of crop residues.

Cropping intensity

The frequency with which a piece of land is cropped within a given period.

Domestication

The long-term process through which humans selected, cultivated, and modified wild plants to obtain crops with desirable characteristics.

Ethiopian/East African Center of Origin

A major center of crop diversity responsible for crops such as teff, coffee, sorghum, finger millet, and some pulses.

Near Eastern/West Asian Center of Origin

A major center of crop origin for crops such as wheat, barley, peas, lentils, chickpea, and some oil crops.

Annual crops

Crops that complete their entire life cycle in one growing season (e.g., maize, wheat, beans).

Biennial crops

Crops that usually complete their life cycle in two growing seasons (e.g., carrot, beet, cabbage under typical seed-production conditions).

Perennial crops

Crops that live and produce for several years (e.g., coffee, banana, mango, many forage crops).

Warm-season crops

Crops that grow best under relatively warm conditions, such as maize, sorghum, and cotton.

Cool-season crops

Crops that grow best under relatively cool conditions, such as wheat, barley, and peas.

C3 crops

Crops that form a $3$-carbon molecule called 3-phosphoglycerate (3-PGA) using RuBisCO directly, lack specialized anatomy, and thrive at moderate temperatures of $20^\circ\text{C}\text{--}25^\circ\text{C}$.

C4 crops

Crops that form a $4$-carbon compound called oxaloacetate (OAA) using PEP carboxylase, feature chloroplasts in mesophyll and bundle sheath cells, and thrive at optimal temperatures of $35^\circ\text{C}\text{--}45^\circ\text{C}$.

Cropping system

The pattern and sequence in which crops are grown on a piece of land over a period of time.

Mono-cropping

Growing only one crop on a particular piece of land during a growing season or repeatedly.

Multiple cropping

Growing more than one crop on the same land within a year or production period, including double and triple cropping.

Intercropping

Growing two or more crops simultaneously on the same piece of land.

Mixed intercropping

Growing two or more crops together without a distinct row arrangement.

Row intercropping

Growing two or more crops simultaneously in distinct rows.

Strip intercropping

Growing crops simultaneously in strips wide enough to permit separate management but close enough for interaction between crops.

Relay intercropping

Planting a second crop before the first crop has been harvested, resulting in overlapping growing periods.

Sequential cropping

Growing and harvesting one crop, followed by another crop on the same land within the same production year or sequence.

Crop rotation

Growing different crops on the same land in a planned sequence over successive seasons or years to break pest cycles and manage soil fertility.