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

Abstract

A pot experiment was conducted at Sher-e-Bangla Agricultural University to the effect of organic and inorganic fertilizers management on growth and yield of rice (BRRI dhan29). The experiment was set up at the premise of the Department of Soil science at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, during the period from January 2022 to May 2022. BRRI dhan29 was considered as test crops. There were eight treatments combinations consisting of different source of organic and inorganic fertilizer. The treatments were viz. T 0 : Control (No fertilizer applied); T 1 : 100% RDF (RDF=Recommended dose of fertilizer. Here, N 120 P 20 K 40 S 20 Zn 2.5 kg/ha); T 2 : 100% Cowdung (10ton/ha); T 3 : 100% Poultry Manure(5ton/ha); T 4 : 75%RDF+25% Cowdung; T 5 ii : 50% RDF+50% poultry manure; T 6 : 25%RDF+75% Cowdung; T 7 : 25% RDF+75% Poultry manure. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Different data on growth and yield contributing parameters were collected and analyzed statistically. It was observed that most of the parameters varied significantly due to different combination of organic and inorganic fertilizers management. In case of different treatments performance, T 4

(75%RDF+25% Cowdung) treatment showed best performance in BRRI dhan29 cultivation in terms of plant height, tillers per hill, length of leaves (cm), number of effective tillers hill , number of non-effective tillers hill -1 , filled grains panicle -1 ,

unfilled grains panicle panicle length and yield contributing parameters of rice which was total grains per panicle, percentage of grain sterility, grain yield (t/ha), straw yield (t/ha), biological yield (t/ha) and harvest index (%) of rice. In term of grain yield, the highest grain yield (7.84 ton/ha) was observed from T 1

(no T 4 (75%RDF+25% Cowdung) combination of organic and inorganic fertilizers management treatment which was significantly different from others treatment and closely followed by T 1

(100% RDF (RDF=Recommended dose of fertilizer. Here, N 120 P 20 K 40 S 20 kg/ha). So, from this study, it can be concluded that among different treatments, T 4 (75%RDF+25% Cowdung) showed best combination of organic and inorganic fertilizers management on growth and supported to make sure the more yield of BRRI dhan29.