Write a short note on soil ierigation for field preparation.
Answers
Answer:
Preparation of soil is the first step in cultivating crop for food production. The soil is prepared for sowing the seeds of the crop, by ploughing, levelling and manuring. Let us now discuss these steps in detail. Ploughing. The process of loosening and upturning the soil is called ploughing.
Plough the land during summer to economize the water requirement for initial preparation of land.
Field is ploughed once or twice to obtain a good tilth.
Flood the field 1 or 2 days before ploughing and allow water to soak in. Keep the surface of the field covered with water.
Keep water to a depth of 2.5cm at the time of puddling.
Apply 12.5 t of FYM or compost or green leaf manure @ 6.25 t/ha.
If green manure is raised @ 20 kg/ha in situ, incorporate it to adepth of 15 cm using a green manure trampler or tractor.
Apply 22 kg urea/ha at the time of first puddling while incorporating the stubbles of previous crop to compensate immobilization of N by the stubbles. This may be done at least 10 days prior to planting of subsequent crop.
For SRI, 4-5 ploughing is required for preparing the land & in the last ploughing, we need to ensure it is upto a depth of 6 inches.
Perfect levelling is a pre requisite for the water management in SRI.
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