IMPACT OF ADDED FOLIAR SPRAY OF UREA AND BORON ON GROWTH AND YIELD OF MUNGBEAN

Abstract

The experiment was conducted at the Agronomy research field, Sher–e- Bangla Agricultural University, Dhaka, during the period from March 2016 to May 2016 to study the Impact of added foliar spray of urea and boron on growth and yield of mungbean varieties. The experiment consists of two varieties viz. V = BARI Mung-5 and V 2 = BARI Mung-6 and eight levels of fertilizer management viz. T ii

1 = Recommended fertilizer (RF), T = RF + Foliar spray (FS) of water at flower initiation (FI), T 3 2 = RF + Urea (2%) FS at FI, T 4 = RF + Boron (1%) FS at FI, T = RF + Urea (2%) + Boron (1%) FS at FI, T 6 = Urea (2%) FS at FI, T = Boron (1%) FS at FI and T 8 7 = Urea (2%) + Boron (1%) FS at FI. The experiment was laid out in Split Plot Design with three replications. In this experiment, both variety and combined foliar application of N and B had significant effect on most of the growth and yield contributing parameters irrespective of mungbean varieties. Results indicated that the variety, BARI Mung-6 gave the tallest plant (49.27 cm), highest leaves plant (9.68), branches plant -1 (2.50), above ground dry matter content plant -1 (22.40 g), nodules plant -1 (64.50), pods plant -1 (21.08), pod length (8.68 cm), seeds pod (10.04), 1000 seed weight (52.25 g), seed yield (810.58 kg ha -1 -1 ), stover yield (1273.35 kg ha ) and harvest index (38.34%). In case of fertilizer management, the tallest plant (58.42 cm), highest leaves plant -1 (11.20), branches plant -1 (4.35) and nodules plant (87.33) were recorded from T (RF + Urea 2% FS at FI) but the highest above ground dry matter content plant -1 3 (25.27 g), pods plant -1 -1 (25.37), pod length (9.73 cm), seeds pod

(10.43), 1000 seed weight (55.67 g), seed yield (1121.00 kg ha ), stover yield (1467.00 kg ha -1 ) and harvest index (43.31%) were recorded from T (RF + Urea 2% + Boron 1% FS at FI). Regarding combined effect, the tallest plant (59.97 cm), maximum leaves plant -1 (11.30), branches plant -1 5 -1 (4.63) and nodules plant (88.33) were recorded from the treatment combination of V 2 T but highest above ground dry matter content plant -1 (25.52 g), pods plant -1 3 (25.89), pod length (10.40 cm), seeds pod -1 (10.46), 1000 seed weight (56.67 g), seed yield (1159.00 kg ha ), stover yield (1472.00 kg ha -1 ), biological yield (2631.00 kg ha -1 ) and harvest index (44.05%) were recorded from the treatment combination of V 2 T 5 -1 -1 -1 .So, BARI Mung-6 along with T

(RF + Urea 2% + Boron 1% FS at FI) is suggested for yield improvement in mungbean cultivation.