Abstract
Micronutrients are vital for cotton growth and development. Fundamental micronutrients like boron, zinc, iron, manganese, and copper. Deficiency of these micronutrients increases under calcareous soil and high soil pH conditions which make them unavailable for plant. Currently cotton yield is falling due to nonavailability of micronutrients, so it is need of the hour to ensure sufficient supply of these micronutrients throughout cotton growth period. Micronutrients are required for various growth functions in the cotton plant. Soil application of micronutrients often results in binding with soil particles due to unfavorable soil conditions making them unavailable. Foliar application of micronutrients in such conditions is an economically viable option and also beneficial because of their application and relatively quick absorption by the leaves. In this chapter we discussed about the role of different micronutrients for cotton growth and development. We also elaborated their deficiency symptoms and possible remedial measures to correct the deficiencies.
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