Discussion
Which of the following is not likely to increase the fertility of soil?
Answer: D
The practice not likely to increase soil fertility is maintaining minimum distance between the crops while sowing.
Sowing seeds too close together does not add anything to the soil. It causes overcrowding, so plants compete for the same nutrients, water and sunlight, and the soil is drained faster rather than enriched.
The other practices all help restore fertility. Organic manure adds humus and nutrients and improves soil texture. Leaving a field fallow between crops lets the soil recover its nutrients. Crop rotation, especially with legumes, replenishes nitrogen.
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