EFFECT OF FOLIAR FERTILIZATION AND GROWTH STIMULATOR ON THE MORPHO-PHYSIOLOGICAL AND YIELD ATTRIBUTES OF HYBRID RICE (Oryza sativa L.)

Abstract

Rice (Oryza sativa L.) is one of the important cereal crops and commonly grown all over the world for multiple purposes. The present investigation was undertaken for the improvement of yield of rice (Oryza sativa L.) varieties through the manipulation of stem reserve remobilization and filled-grain percentage by plant growth stimulator and foliar fertilization. The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka-1207, using Randomized Complete Block Design with three replications during the period from November, 2016 to May, 2017. This experiment was comprised of two factors; Factor A: Rice varieties: (i) BRRI hybrid dhan3 and (ii) BRRI dhan29 and Factor B: PGS and fertilizer management (5) viz. (i) Recommended fertilizer dose (T 1 ); (ii) Recommended fertilizer dose + Akota + Global (T 2 ); (iii) Recommended fertilizer dose + Akota + Global + Calsol (T 3 ); (iv) Recommended fertilizer dose + Akota + Global + Magic Growth (T 4 ) and (v) Recommended fertilizer dose + Akota + Global + Calsol + Magic Growth (T 5 ). Data on different growth characters and yield contributing characters were recorded and significant variation was observed among the treatment means. In case of variety the highest (98.98 cm) plant height at harvest, total dry matter after harvest (73.24 g hill ), shoot dry matter accumulation (43.79 and 33.23 g) at flowering and maturity stage, panicle hill -1 (16.67), filled grains panicle iii

-1 (180.36), total grains panicle (189.26) and grain yield (7.09 t ha -1 ) was recorded from BRRI hybrid dhan3. In case of PGS and fertilizer treatment, the highest values were recorded from T 3 (Recommended fertilizer dose + Akota + Global + Calsol) for all growth and yield attributing characters at different DAT. Due to this T 3 -1 treatment the highest (81.41 g) total dry matter hill at harvest, shoot dry matter accumulation (33.23 g) and its reserve translocation (26.31%), effective tillers (95.75 %), panicle hill -1 (17.65), total grains panicle (178.0), 1000 grains weight (24.98 g), grain yield (6.99 t ha -1 ) was recorded. Due to the interaction the highest value of plant height (105.6 cm), number of leaves hill -1 (75.33), number of tillers hill -1 (19.47) was recorded from BRRI hybrid dhan3 × T 3 (Recommended fertilizer dose + Akota + Global + Calsol) at harvest. The highest value of total dry matter after harvest (81.41 g hill -1 ), shoot reserve translocation (15.52 %) and all yield attributing characters including grain yield (7.78 t ha -1 ) was recorded from BRRI hybrid dhan3 × T 3 (Recommended fertilizer dose + Akota + Global + Calsol). So, BRRI hybrid dhan3 and T 3 -1 (Recommended fertilizer dose + Akota + Global + Calsol) combinedly had outstanding superiority for growth and yield over the other treatments.