AP BIOLOGY

Detailed explanation-1: -More efficient use of animal manure and greater use, in rotations, of nitrogen-fixing crops – such as legumes which convert nitrogen from the air into a form that is biologically useful – will be crucial to replace synthetic nitrogen as part of the process of rebuilding soil fertility.

Detailed explanation-2: -In an agricultural setting, nitrogen deficiency can be combated by the addition of nitrogen-rich fertilizers to increase the availability of nutrients and thereby increase crop yield.

Detailed explanation-3: -We can tell the farmers that if the organic fertilizers are used properly they can increase the crop production and increase the soil fertility. Organic fertilizers are cheaper than chemical fertilizers.

Detailed explanation-4: -Surface broadcast is a method by which fertilizer is applied on the surface across an entire field. High capacity fertilizer spreaders are often used which spin dry fertilizer or spray liquid fertilizer on the soil surface or on a growing crop.