EFFECT OF SULFUR AND ZINC IN SOYBEAN (GLYCINE MAX)-WHEAT (TRITICUM-AESTIVUM) CROPPING SEQUENCE

A field experiment was conducted to asses the requirement of sulphur a nd zinc in 'JS 72-44' soybean and 'WH 147' wheat sequence on Vertisols . The treatment combinations of 0, 25 and 50 kg S/ha as gypsum and 5 a nd 10 kg/ha of zinc as ZnCl2 and ZnSO4 were applied to soybean crop in rainy season and their residual effect was evaluated on wheat crop. A pplication of 25 and 50 kg S/ha increased the yield by 3.16 and 6.26 q /ha respectively. Zinc sulphate @ 5 kg Zn/ha increased the wheat yield by 2.44 q/ha and zinc sulphate @ 10 kg Zn/ha increased the wheat yiel d by 2.19 q/ha. The residual response of zinc by either source was rec orded in wheat.