Effect of different levels of rock phosphate sulphur granule on growth and yield of onion and black gram

Abstract

Pot experiments conducted to study the effect of rock phosphate - elemental sulphur granule (RP-S° G) on the yield attributes and yield of onion and black gram in Typic Haplustalf so\\ revealed that the application of RP-S° G at the rate of 60 kg P2O~ ha"' recorded the highest yield for both the crops. Better residual effects were reflected in black gram yield and uptake of nutrients. RP-S° G @ 75 kg P2O5 ha"1 also performed well, but its effect was on par with that of 75 kg P20s ha'1.