EFFECT OF NEB FORMULAS ON THE GROWTH, YIELD AND N CONTENT OF T. AMAN RICE (BRRI DHAN 32)

Abstract

Two experiments were conducted at the experimental field of Sher-e-Bangla Agricultural University, DhakL Bangladesh during the period from June to December 2012 to effect of NEB formulas on the growth, yield and N content in T. Aman Rice (BRR1 dlìan 32). Two different experiments each with eight treatments with three replications were conducted to achieve the desired objectives. The first experimental treatments included viz. 'I'i= Control. T2= N50P46K50S18 (50% urea), T3= N10013 1(coS1g (Recommended dose of fertilizer kg ha'); T4= N50P46K5 S18 + standard NEB-tX!; 1 = NSQP.k,KSQSIS + standard NEB-300; 16= N501)46K50S18 ± NEB-301: T7= N50P.16K50S18± standard NEB-302; T8= N50P46K50S18+ standard NED303 1 NEB powder and the second experimental treatments included viz. T,= Control. 'l'= N701'46K50S19 (70% urea). T3= N100134 ,K50S1g (Recommended dose of fertilizer kg hi'); T4= N79PK53S13 + standard NEB-IXI; 15 N70PK50S,8 + standard NEB-300; T5= N70P46K50S 8+ NE13-301: T7 N70P36K50S,8+ standard NEJ3302; T8= N70P46K50S,8 + standard NEB-303 + NEB powder. The experiments were laid out in Randomized Complete Block Design (RCBD) with three replications. The application of 50% nitrogenous fertilizers plus different NEB formulas was significantly increased the plant height, paniele length, grain and straw yield. The tallest plant was produced in N50P46K50S18 + standard NEB-300. the maximum number of effective tiller hilr', longest panicle, grain and straw yields were produced from N 0P46K50S,8 i standard NEB-300. The highest grain yield of 5.08 t ha was recorded in N5 P.46K50Sj8 + standard NEB-300. In second experiment, the application of 70% nitrogenous fertilizers plus different NEB formulas was significantly influenced the plant height, grain and straw yield. The tallest plant was produced in N70P46K50S,8+ standard NEB-300. The maximum number of effective tiller hilF' and longest paniele was produced from N70P46K50S18 -I- standard NEB-300. Similarly, the same treatment gave the highest grain and straw yield. In each experiment, highest yield increased was obtained from 50% or 70% urea plus NEB treatment. So NEB can be used as an alternative of 30 or 50% nitrogenous fertilizer.