Cotton (Gossypium L.), the king of fibres, is an industrial commodity of worldwide importance. It has the slowest early growth and the lowest nutrient uptake initially which increases rapidly afterwards. Approximately the uptake of 76% of total N, 86% of P and 82% of K take place in cotton between 49-99 days after planting. Broadcasting of fertilizers, especially P and K, produces fixation problems due to more soil contact. Nearly 58-71%, 30-40% and less than 2% of total cotton growing roots are located in the top 20, 20-40 and below 40cm soil depth, respectively. Further, it is feasible to...