Performance of Mungbean Varieties as Influenced by Sowing Dates in Sylhet Region

Abstract

An attempt was made in the Agronomy Field Laboratory, Sylhet Agricultural University, Sylhet during the period from January to December 2013 to investigate the performance of mungbean varieties viz., BARI Mung-5 (V2) and BARI Mung-6 (V1), as influenced by sowing time from January (S1) to December (S12) in Sylhet region. The experiment was conducted in a Randomized Complete Block Design (RCBD) with three replications assigning the sowing dates and varieties on the plots. Unit plot size was 10 m (4.0 m × 2.5 m) with a spacing of 30×10 cm distance. The experimental plots were fertilized at the rate of 18, 32 and 21 kg ha 2 -1 of N, P and K respectively for each sowing time and whole amount applied as basal dose during final land preparation. Weeding, irrigation and other intercultural operations were done as and when necessary. On an average about 60 days after sowing (DAS) mungbean pods were harvested two times within 10 (ten) days interval for each of the sowing times. The results of the experiment showed that variety had slightly or no significant influence and sowing date exerted significant influence on most of the yield and yield contributing characters of mungbean including plant m , number of pods plant -2 , number of branches plant -1 -1 , pod length, 1000 seed weight, grain yield, Stover yield and harvest index. BARI Mungbean- 6 produced the highest branches plant -1 , number of seeds pod and other yield and yield contributing characters compared to BARI Mung-5. The highest seed yield 693.1 kg ha -1 -1 was obtained from 05 June sowing. It was also found that both the varieties gave highest yield on 20 March sowing and all yield and yield contributing characters of mungbean may be reduced for delayed sowing from 20 March. was obtained from 20 March sowing and the lowest seed yield 196.1 kg ha -1