In India, soybean (Glycine max) has established one of the major oilseed crops besides being pulse crop. In the North East India, it is grown on slopes, jhum lands, terraces and plains. In spite of high yield potential, it productivity is much less than the world average. Cultivation of soybean on marginal land combined with sub optimal nutrients supply is the major hurdle in realising potential productivity. Sulphur is required for the synthesis of sulphur-containing amino-acids cystine, cystein and methionine which are essential components of protein. Soybean is very sensitive to boron...