EFFECT OF UREA SUPER GRANULE APPLICATiON ON GROWTH, YIELD ATTRIBUTES AND YIELD OF T.AMAN RiCE

Abstract

A field experiment was conducted at the experimental field of Sher-e-Bangla agricultural university during July to December 2008 to find out effects of urea super granule application on growth, yield attributes and of BRRI dhan3 I and BRRI dhan34. The experimental treatments included two T. aman rice varieties viz. BRRI dhan3 1 and BRRI dhan34 variety and six levels of nitrogen viz No nitrogen, prilled urea (65 kg Nha1 ), USG 40 kg Nha4 , USG 45 kg Nha. USG 50 kg Nha' and USG 60 kg Nha* Results revealed that rice cultivars differed significantly in all growth, yield contributing characters and yield.BRRI dhan3 I produced the highest grain yield (3.73 t hi'). Among the treatments. application USG 50 kg Nha' performed the best in all the parameter studied which produced the highest grain yield (3.85 t hi'). Interaction BRRI dhan3 1 and USG 50 kg Nhi' showed significantly higher grain yields (4.45 t hi'). The higher grain yield was attributed mainly to the number of effective tillers hilr', filled grains panicl&' and 1000-grains weight.