Boron (B) is required for cell division and extension. It is essential for pollen tube growth which affects seed/fruit set and hence yield. It is an essential plant nutrient and its specific deficiency symptoms are well documented in several crops. It is essential for the development of reproductive tissues and its deficiency results in low grain set or poor quality seeds and fruits. It is an essential nutrient required for all plant growth and must remain available for plant uptake during the growth period. Adequate "B" nutrition is reported to reduce incidence of some diseases in plants. About one-third of the cultivated soils, especially in the eastern and north-eastern states of India are deficient in Boron.