Interaction Effect of Phosphorus and Sulphur on Yield and Quality of Clusterbean in Typic Haplustept

A pot experiment was carried out to study the phosphrous-sulphur interaction at Department of Agricultural Chemistry and Soil Science, Rajasthan College of Agriculture, Udaipur on a sandy loam soil (Typic Haplustept) medium in P and deficient in S with clusterbean. The treatment consisted of three levels of P (0, 20 and 40 kg P O ha ) and three levels of S (0, 10 and 20 kg ha ) applied from gypsum and triple 2 5 1 1 superphosphate, respectively. Number and weight of nodules, grain and straw yield, content of P and S were increased with increase in level of P and S individually as well as in various combinations. Applied P and S increased grain nitrogen and protein contents. Available P in soil was increased with increasing levels of phosphorus. Similarly available S in soil was increased with increasing levels of sulphur. The synergistic effect of phosphorus and sulphur was reported on number and weight of nodules plant , N, P, S and protein content 1