Effect of polysulphate on yield and quality of mustard and sesame in the central plain zone soils of Uttar Pradesh

Field experiments were carried out at Oilseed Research Farm, Kalyanpur, Kanpur with mustard variety Varuna and at Fertilizer Research Station, Uttaripura, Kanpur on sesame variety T-78 both under C. S. Azad University of Agriculture & Technology, Kanpur, Uttar Pradesh (India) during 2013–14 to evaluate the response of polysulphateon yield and quality of mustard and sesame. Results of the experiments revealed that use of polysulphate as a source of sulphur significantly increased grain and stover yield of both the crops up to 100% sulphur level. Oil content in both the crops also significantly enhanced due to use of polysulphate up to 100% level of sulphur through polysulphate. Maximum grain yield of mustard and sesame crops was 25.20 and 11.10 q/ha with oil content of 43.45 and 45.50%, respectively, under T₅ [100% NP+100% S through polyphosphate (Balanced K through MOP to make 100% K)]. Polysulphate proved its superiority over gypsum at 100% level of sulphur used.