Conservation agriculture improves the water use efficiency of dryland systems. It has components:
Correct answer: D. all of the above
- A. Reduced soil disturbance through no-till or minimum till
- B. Residue return to keep at least 30% of soil covered
- C. Crop rotations for better utilization of available water & nutrients
- D. all of the above
Explanation
Conservation agriculture combines minimum soil disturbance, residue cover of about 30% or more, and crop diversification or rotation. Together these practices improve infiltration, moisture conservation and water-use efficiency.
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