NEET BIOLOGY

Detailed explanation-1: -The addition of organic matter to the soil usually increases the water holding capacity of the soil. This is because the addition of organic matter increases the number of micropores and macropores in the soil either by “gluing” soil particles together or by creating favourable living conditions for soil organisms.

Detailed explanation-2: -Increased soil organic matter enhances your soil’s ability to absorb water, leading to less water stress during both dry and wet periods. This can be achieved by: Incorporate compost, manures, or other stable organic materials. Grow and incorporate a high biomass cover crop.

Detailed explanation-3: -CHEMICAL: Soil organic matter significantly improves the soil’s capacity to store and supply essential nutrients (such as nitrogen, phosphorus, potassium, calcium and magnesium), and to retain toxic elements. It allows the soil to cope with changes in soil acidity, and helps soil minerals to decompose faster.

Detailed explanation-4: -Farmers add manures to the soil which is a natural fertilizer for crops. It replenishes the nutrients in the soil which helps in increasing the crop yields. It also helps to loosen the soil which increases the absorption rate and increases the water holding capacity of the soil.

Detailed explanation-5: -Increasing levels of organic matter aid in soil structure, water-holding capacity, nutrient mineralization, biological activity, and water and air infiltration rates.