Learning Objectives
- Understand agricultural practices and their importance
- Learn the steps involved in crop production
- Differentiate between kharif and rabi crops
- Understand irrigation, manuring, harvesting, and storage
Key Concepts
Basic Agricultural Practices
Agriculture is the science of cultivating plants and rearing animals for food, fibre, and other products. The major steps in crop production are: preparation of soil, sowing, adding manure and fertilisers, irrigation, protecting from weeds, harvesting, and storage.
Types of Crops
Kharif Crops: Sown during the rainy season (June-July) and harvested in autumn (September-October). Examples: paddy (rice), maize, soyabean, groundnut, cotton.
Rabi Crops: Sown in winter (October-November) and harvested in spring (March-April). Examples: wheat, gram, pea, mustard, linseed.
Preparation of Soil
Soil is turned and loosened using a plough. This process is called tilling or ploughing. Loose soil allows roots to penetrate deeper, promotes air circulation, and helps in the growth of earthworms and microbes. Tools: plough, hoe, cultivator.
Sowing
Sowing is the process of placing seeds in the soil. Good quality, healthy seeds are selected. Seeds are sown at the correct depth and distance using seed drills or traditional methods. A seed drill ensures uniform distribution and depth.
Adding Manure and Fertilisers
Manure: Natural organic substance made from decomposed plant and animal waste (e.g., compost, vermicompost). It improves soil texture and water-holding capacity.
Fertilisers: Chemical substances manufactured in factories (e.g., urea, NPK). They provide specific nutrients (nitrogen, phosphorus, potassium) but can harm soil in the long run.
Irrigation
Supplying water to crops at regular intervals. Traditional methods: moat (pulley system), chain pump, dhekli, rahat. Modern methods: sprinkler system, drip irrigation. Drip irrigation saves water and is suitable for areas with water scarcity.
Weeding, Harvesting, and Storage
Weeding: Removal of unwanted plants (weeds) that compete with crops for nutrients, water, and sunlight. Methods: manual removal, use of weedicides (like 2,4-D).
Harvesting: Cutting and gathering mature crops. Done manually (sickle) or by machine (harvester/combine).
Storage: Grains are dried in the sun to reduce moisture, then stored in jute bags or granaries. Stored grains are protected from pests and moisture using neem leaves or chemical treatments.
Summary
Crop production involves a sequence of activities from soil preparation to storage. Kharif and rabi are the two main cropping seasons in India. Proper irrigation, use of manure/fertilisers, and pest management are essential for good yield. Modern agricultural practices like drip irrigation and seed drills improve efficiency.
Important Terms
- Agriculture: The practice of farming, including cultivation of crops and rearing of animals
- Kharif Crop: Crop grown in the rainy season (paddy, maize)
- Rabi Crop: Crop grown in the winter season (wheat, gram)
- Irrigation: Supplying water to crops artificially
- Manure: Organic matter from decomposed waste that enriches soil
- Fertiliser: Chemical substance that provides specific plant nutrients
- Weeding: Removal of unwanted plants from the field
- Harvesting: Cutting and gathering mature crops
Quick Revision
- Main steps: soil prep → sowing → manure/fertiliser → irrigation → weeding → harvesting → storage
- Kharif = rainy season crops; Rabi = winter season crops
- Manure = organic, improves soil; Fertiliser = chemical, gives specific nutrients
- Drip irrigation saves water; sprinkler mimics rain
- Grains are sun-dried before storage to prevent moisture damage
- Seed drill ensures uniform sowing at correct depth