Abstract

Field trials were conducted during kharif and rabi seasons of 1995 and 1996 to study the effect of sources and levels of sulphur on the growth, yield and economics of irrigated blackgram. Three different sources of sulphur viz. Gypsum, Elemental sulphur, and Pyrite were tried at five levels of sulphur viz. 0,10,20,30 and 40 kg ha-1. The results proved that gypsum was the superior sulphur source which was evident from the yield increase due to gypsum application. Elemental sulphur and pyrite were on par in their effect. Among the levels 30 kg S/ha was best, but this was on par with 40 kg S/ha. Highest benefit cost ratio was also realised from gypsum source and at levels of 30 and 40 kg S/ha.

Keywords: Sulphur, Gypsum, Elemental sulphur, Pyrite, Blackgram