WORLD HISTORY

Detailed explanation-1: -Crop rotation is essential under organic farming system to keep the soil healthy and to maintain the natural microbial systems. The succession of cultivation of different crops on same land is known as crop rotation. The crop rotation cycle should be of 3–4 years.

Detailed explanation-2: -Legumes are of special interest in organic crop rotations because of their ability to add nitrogen to the system. Specialized bacteria (Rhizobium spp.) associated with the roots of legumes convert atmospheric nitrogen (N2 gas) into plant-available nitrogen.

Detailed explanation-3: -When the same crop is grown each year in a field, the soil runs out of essential nutrients for this crop type. Since each crop doesn’t have the same nutrient requirements, the crop rotation allows the uptake of the various nutrients from year to year depending on the crop.

Detailed explanation-4: -In most cases, rotation results in greater soil porosity and increases nutrient availability for plant growth30.

Detailed explanation-5: -In addition to helping with weed management and pest control, a diverse crop rotation gives the soil microbes different food sources, which ultimately makes soil healthier.