Effect of source and level of sulphur on production of soybean (@)cine nznx)

Abstract

As inlormation is meagre on the effect of sown on 21 Novcmber 1990 and 5 Novem- sulphur nutrition on growth and yield of ber 1991 during winter season of 1990 and soybpn [Glycine max (L.) Merr.], a field 1991, and harvested on 17 February 199 1 csperiment was conducted during 1990 and and 2 February 1992 respectively. Sulphur 1991 to study the effect of different sources was applied basal at the time of sowing as and levels of sulphur on production. The per the treatment schedule. All other im- soil \\as clay loam containing low available proved agronomic management practices nitrogen (185 kglha) and phosphorus (12 5 were followed as per the recommendation. kglha) and medium available potassium Increased grain yield of soybean (Table (250 kglha), with pH 7.9. A randomized 1) was obtained with corresponding increas- J- block design was followed with 9 treatments ing levels of sulhur. The highest yield was (Table l), replicated thrice Soybean CO 1 obtained with the application of 40 kg Slha upas used A fertilizer dose of N, P and K @ which was significantly superior to the con- 20, 80 and 40 kglha rcspcctively was ap- trol. Among the sources, S applied in the plied basal to all the plots The crop was form of gypsum (CaSO,) was found superior