INFLUENCE OF FOLIAR BORON APPLICATION ON IMPROVEMENT OF YIELD OF HYBRID RICE

Abstract

The field experiment was conducted at the Agronomy farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period from November, 2016 to May, 2017 to find out the influence of foliar boron application on improvement of yield of hybrid rice. Two factors were used in the experiment, viz., three rice varieties - V 1 (ACI hybrid 1), V 2 (ACI Sera) and V 3 (BRRI hybrid dhan1) and five levels of boron application - B 0 (0%; Control), B 1 (1.2% B), B 2 (1.5% B), B 3 (1.8% B) and B 4 (2.1% B). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Data on different growth, yield and yield contributing parameters were recorded. Different variety and application of boron individually influenced plant height, number of leaves hill -1 , leaf area index, number of tillers hill 1 -1 , number of panicles hill , dry weight of plant hill -1 -1 , number of effective tillers hill , panicle length, number of filled grains panicle , number of rachis panicle -1 , grain yield, straw yield, biological yield and harvest index. Combined effect of variety and application of boron also showed significant effect on different parameters. Results revealed that the number of effective tillers hill -1 (18.60), the highest dry weight of plant hill (72.84 g), number of panicles hill -1 (18.48), panicle length (23.16 cm), number of rachis panicle 1 -1 (9.78), number of filled grains panicle ), straw yield (8.42 t ha -1 -1 -1 (166.80), grain yield (7.88 t ha ), biological yield (16.30 t ha -1 ) and harvest index (48.34%) were achieved from the treatment combination of V 2 . So foliar boron application improves the yield of hybrid rice.