INTEGRATED FERTILIZER MANAGEMENT IN SCENTED RICE VARIETIES FOR YIELD IMPROVEMENT

Abstract

The experiment was conducted at Sher-e-Bangla Agricultural University, Sher- e-Bangla Nagar, Dhaka, Bangladesh during Aman season of 2018 to evaluate the performance of scented rice varieties under different combination of chemical fertilizer and organic manures with recommended fertilizer as check. Three rice varieties namely V 1 = BRRI dhan34, V 2

2 = BRRI dhan70 and V = BRRI dhan80 and five fertilizer managements viz. T = Recommended dose of fertilizer (control), T 2 =75% RDF+25% cowdung, T 3 1 =75% RDF +25% poultry manure, T 4 = 25% RDF + 75% cowdung,T =25% RDF + 75% poultry manure were treatment variables under evaluation. The experiment was laid out in Randomized Completely Block Design (RCBD) method with three replications. Results revealed that V 3 5 (BRRI dhan80) gave maximum panicle length (27.13 cm), effective tillers hill –1 (15.10), filled grainpanicle (213.96), 1000-grain weight (24.37) and grain yield (5.66t ha -1 –1 ) compare to V

(BRRIdhan70) and V (BRRI dhan34).Comparing yield and yield contributing parameter under different treatments RDF (T 1 ) gave maximum panicle length (27.15 cm), effective tillers hill –1 1 (16.26), filled grainpanicle –1 (201.62), 1000grain weight

(21.56) and grain yield (5.52t ha -1 ) but 75% RDF + 25% poultry manure (T ) was found statistically at par with RDF targeting the grain yield (5.12t ha -1 3 ). In case of combined effect, BRRI dhan80 with RDF (V ) registered significantly maximum effective tillers hill –1 (17.56), panicle length (29.29 cm), filled grains panicle –1 (240.64),1000-grain weight (26.14 g) and grain yield (6.58 t ha -1 ) but BRRI dhan80 with 75% RDF + 25% poultry manure (V 3 T ) gave statistically similar result targeting the grain yield(6.10 t ha -1 3 ). Thus we can say treatment 75% RDF + 25% poultry manure (V ) may be advocated for maintaining soil health towards sustainable aromatic rice (var. BRRI dhan80) production.