RESPONSE OF ORGANIC AND INORGANIC FERTILIZERS ON GROWTH AND YIELD OF RICE (Oryza sativa L.)

Abstract

A pot experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh during the period from January 2022 to July 2022 to examine the response of organic and inorganic fertilizers on growth and yield of rice (Oryza sativa). The experiment consisted of eight treatments viz. T 0

(Control, no nutrient application), T 1 ii

(100% RDCF: N 120 P 20 K 40 S 20 ), T 2 (100% Cow dung: 10 t ha -1 ), T 3 (100% Poultry Manure: 5 t ha (50% RDCF + 50% Cow dung), T 5 (50% RDCF +50% Poultry Manure), T 6 (25% RDCF + 75% Cow dung), T 7 (25% RDCF + 75% Poultry Manure). The pot experiment was laid out with two factors following randomized complete Block design (RCBD) with three replications. A significant variation was found among the treatments while different nutrient levels (organic and inorganic) applied in different combinations. The treatment T 4 (50% RDCF + 50% Cow dung) exhibited the highest plant height at 30, 60, 90 DAT and at harvest (55.35, 72.30, 85.24 and 99.00 cm respectively). The treatment T 4 (50% RDCF + 50% Cow dung) also showed the highest number of tillers hill -1 (26.49, 31.33, 36.58 and 28.67 respectively), whereas control treated pot T 0 (no nutrient application) showed the minimum results. Again, the treatment T 4 (50% RDCF + 50% Cow dung) showed the highest Grains Panicle -1 (98.16), Panicle Length (17.33 cm), 1000 Seed Weight (21.08 g), Grain Yield (5.95 t ha -1 Zn 2.5 -1 Kg ha ), T 4 ), Straw Yield (8.42 t ha ), Biological Yield (8.79), Harvest Index (50.33%) followed by T 5 (50% RDCF +50% Poultry Manure) and T 7 (25% RDCF + 75% Poultry Manure) in some case whereas the control treatment T 0 (no nutrient application) performed the lowest results on the respected parameters. So, the treatment T 4 (50% RDCF + 50% Cow dung) can be considered as suitable treatment for rice production (BRRI dhan28) to obtain higher grain yield.