EFFECT OF GROWTH REGULATORS ON GROWTH AND YIELD OF MUNGBEAN UNDER DIFFERENT LATE SOWING CONDITIONS IN KHARIF-II SEASON

Abstract

A field experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2017 to January 2018 to study the effect of growth regulators on growth and yield of mungbean under different late sowing conditions in kharif-II season. The experiment was comprised of two factors; factor A: growth regulators (6) viz. G 0 ii

= distilled water, G = 20 ppm BAP (Benzylaminopurine), G 2 = 40 ppm BAP, G 3 = 20 ppm GA 3 1 (Gibberellic acid), G = 40 ppm GA 3 , G 5 = 60 ppm GA 3 and factor B: sowing date (2) viz. S 1 = sowing on 31

October, 2017, S 2 = sowing on 14 th November, 2017. The experiment was laid out in randomized complete block design (RCBD) in factorial arrangements with three replications. Results revealed that in case of growth, plant height (38.35 cm), and dry weight (9.57g) plant -1 were significantly higher in G 5 (60 ppm GA ) treatment. In terms of yield and yield attributes, number of pods plant -1 (6.56), number of seeds pod -1 (5.52), weight of 1000- seeds (35.07 g), seed yield (0.26 t ha ), and harvest index (37.75 %) were higher in G 5 (60 ppm GA 3 3 -1 ) treatment). Sowing at 31 October showed better results in case of all growth and yield parameters than sowing at 14

November. Results from Interaction effect between different levels of growth regulators and different sowing conditions revealed that the highest plant height (39.43 cm), number of pods plant -1 (8.80), number of seeds pod -1 (7.22), weight of 1000-seeds (38.74 g), seed yield (0.45 t ha -1) were observed in S 1 G

October with 60 ppm Gibberellic acid) interaction. The results in this study indicated that the plants performed better in respect of growth, yield and others yield contributing characters in S 1 G 5 (Sowing on 31 th 5 October with 60 ppm Gibberellic acid) treatment.