EFFECT OF DIFFERENT LEVELS OF SULPHUR ON GROWTH AND YIELD OF THREE RICE VARIETIES IN BORO SEASON

Abstract

The experiment was carried out at the research field of Sher-e-Bangla Agricultural University, Dhaka during November 2019 to May 2020 to study the effect of sulphur on popular three BRRI released rice varieties. The experiment consisted of three rice varieties viz., V 1 (BRRI dhan88), V 2 (BRRI dhan89) and V (BRRI dhan100) in combination with four sulphur treatments viz., S 0 (control; 0 kg S ha 3 -1 ), S ), S 2 (40 kg S ha -1 ) and S 3 (50 kg S ha -1 ). The experiment was laid out in Randomized complete Block Design (RCBD) with three replications. Among different rice varieties, V (BRRI dhan100) showed better performance on different growth parameters, but considering yield and yield contributing characters V 3 (BRRI dhan89) exhibited better performance,whereas V 1 2 (BRRI dhan88) gave the least performance. Among sulphur treatments, S 2 (40 kg S ha -1 ) gave the best results considering other treatments followed by S 3 (50 kg S ha -1 ) whereas control treatment S 0 (0 kg S ha -1 ) showed the lowest performance. In terms of combined effect of variety and sulphur treatment, V showed better results regarding yield contributing and yield characters and gave the highest number of effective tillers hill -1 (21.67), panicle length (29.87 cm), number of filled grains panicle -1 (114.80), 1000 grain weight (24.30 g), grain yield (8.57 t ha ), straw yield (9.59 t ha -1 ) and harvest index (47.16%), whereas the lowest results were recorded from V 1 S 0 . Therefore, among the treatment combinations, V 2 S (BRRI dhan89 with 40 kg S ha -1 2 ) can be considered as the best treatment combinations followed by V (BRRI dhan89 with 50 kg S ha -1 ) compared to other treatment combinations.