EFFECT OF VARIETY AND ZINC FERTILIZATION ON GROWTH AND YIELD OF HYBRID RICE

Abstract

The field experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period from November, 2019 to May, 2020 in Boro season to find out the effect of variety and zinc application on the performance of hybrid rice. The experiment consisted of two factors as Variety (3 types) viz., V 1 – BRRI hybrid dhan2, V – BRRI hybrid dhan3 and V 3 – BRRI hybrid dhan5 and Zinc management (4 levels) viz., Zn ii 2

(control), Zn 1 – 2 kg ha -1 , Zn 2 – 4 kg ha -1 and Zn 3 – 6 kg ha -1 . The experiment was laid out in a Randomized Complete Block Design (Factorial) with three of replications. Data on different growth and yield parameter of rice were recorded and significant variation was found for different treatments. Regarding varietal performance, the maximum panicle number hill -1 (17.10), panicle length (28.03 cm), grain number panicle -1 (109.45), 1000-grain weight (26.50 g), grain yield ha (6.94 t), straw yield ha -1 (8.58 t), biological yield ha -1 (15.51 t) and harvest index (44.62%) were found from the variety V . Considering Zn effect, the maximum panicle number hill -1 3 (16.33), panicle length (27.14 cm), grain number panicle -1 (108.11), 1000-grain weight (25.38 g), grain yield ha 1 -1 (6.81 t), straw yield ha (15.15 t) and harvest index (44.88%) were found from Zn -1 0 - 0 kg ha -1 (8.34 t), biological yield ha 3 (6 kg Zn ha ). In case of treatment combination of variety and zinc, the maximum panicle number hill

(20.17), panicle length (29.17 cm), number of grains panicle -1 (179.74), 1000-seed weight (27.43 g), grain yield (7.76 t ha -1 ), straw yield (9.19 t ha -1 ), biological yield (16.95 t ha -1 ) and harvest index (45.78%) were found from V 3 Zn . The hybrid rice variety ‘BRRI hybrid dhan5’ with a Zn application of 6 kg ha -1 3 yielded considerably more grain than the other treatment combinations under evaluation.