Plant nutrients are restored during the fallow period through

During the fallow period, plant nutrients are restored through the accumulation of soil organic matter. Fallow period refers to the period when a field is left uncultivated or unplanted. During this time, natural processes such as the decomposition of plant residues and the growth of cover crops can enhance the accumulation of organic matter in the soil. This organic matter is rich in essential plant nutrients such as nitrogen, phosphorus, and potassium, which can be released into the soil as they decompose. Therefore, the accumulation of soil organic matter during the fallow period helps to restore the fertility of the soil for future crop production.