GROWTH AND YIELD RESPONSE OF MUNGBEAN TO ADDED UREA FOLIAR SPRAY AND LEAF CLIPPING

Abstract

An experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, during March to May 2018 to study the impact of added urea foliar spray and leaf clipping on growth and yield of mungbean. The experiment composed of four levels of urea foliar spray viz. F 0 = Recommended Fertilizer (RF) + No Foliar Spray (FS), F 1 = RF + 1% Urea FS at Flower Initiation (FI), F 2 ii

= RF + 2% Urea FS at FI, F 3 = RF + 3% Urea FS at FI and four levels of Leaf clipping viz. C 0 = No leaf clipping, C 1 = Clipping 1 basal leaf, C 2 = Clipping 2 basal leaves, C 3 = Clipping total apical leaves having no inflorescence. BARI Mung-5 was used as study material. The experiment was laid out in Split-plot Design with three replications. Results indicated that foliar spray and leaf clipping had significant effect on most of the growth and yield contributing parameters. In case of foliar spray of urea, the maximum plant height (51.96 cm), nodules plant

(5.19), highest above ground dry matter plant -1 (11.89 g), pods plant -1 (7.95), pod length (7.70 cm), seeds pod -1 (10.92), 1000 seed weight (46.33 g), seed yield (0.90 t ha ), stover yield (2.35 t ha -1 ) and biological yield (3.32 t ha -1 ) were recorded from F 0

(Recommended Fertilizer, RF + No Foliar Spray, FS). In case of leaf clipping the maximum plant height (51.46 cm), above ground dry matter plant -1 (11.85 g), nodules plant -1 (5.1), pods plant -1 (7.50), pod length (7.57 cm), seeds pod -1 (10.54), 1000 seed weight (46.49 g), seed yield (0.98 t ha -1 ), stover yield (2.43 t ha -1 ) and biological yield (3.41 t ha -1 ) were recorded from C 1 (Clipping 1 basal leaf). Regarding combined effect, the maximum plant height (61.20 cm), nodules plant -1 (5.23), highest above ground dry matter plant -1 (14.76 g), pods plant -1 (9.81), pod length (7.82 cm), seeds pod (12.08), 1000 seed weight (48.07 g), seed yield (1.26 t ha -1 ), stover yield (2.62 t ha ), biological yield (3.88 t ha -1 ) and harvest index (32.55%) were recorded from the treatment combination of F 0 C 1 . So, F 0 (Recommended Fertilizer + No Foliar Spray) along with C 1 (Clipping 1 basal leaf) is suggested for yield improvement in mungbean cultivation.