EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -Legume crops such as beans, peanuts and soy can fix nitrogen from the air, and flourish on nitrogen-deficient soils. To do so, they need help from Rhizobium bacteria. These special bacteria stimulate the growth of nodules on the roots of leguminous plants.

Detailed explanation-2: -Atmospheric N2 fixed symbiotically by the association between Rhizobium species and legumes represents a renewable source of N for agriculture (239).

Detailed explanation-3: -In legumes and a few other plants, the bacteria live in small growths on the roots called nodules. Within these nodules, nitrogen fixation is done by the bacteria, and the NH3 they produce is absorbed by the plant. Nitrogen fixation by legumes is a partnership between a bacterium and a plant.

Detailed explanation-4: -Plant species. Alfalfa and clovers are the best nitrogen-fixing cover crops in terms of capacity.

Detailed explanation-5: -Grain legumes such as soybean and peanut use most of their fixed nitrogen for themselves. Forage legumes, such as alfalfa and clovers, are the best crops for companion planting as they can fix substantial amounts of surplus nitrogen under the right conditions.