Author (s): A.S.M. Fazle Bari*, M. A. Khan, Saima Sultana, M Hasanuzzaman and Nasrin Sultana.
*Corresponding author, E-mail: email@example.com
An experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from December 2010 to April 2011 to assess the effect of various organic manure and inorganic fertilizer with different water management practices on yield and yield attributes of boro rice (BRRI dhan29). The treatment consisted of 2 factors i. e. irrigation and fertilizer plus manure. Two levels of irrigations (I0= Alternate wetting and drying and I1= Continuous flooding) with 8 levels of fertilizer plus manure, (as T0: Control, T1: 100% N100P15K45S20Zn2 (Recommended dose), T2: 50% NPKSZn + 5 ton cowdung ha-1, T3: 70% NPKSZn + 3 ton cowdung ha-1, T4: 50% NPKSZn + 4 ton poultry manure ha-1, T5: 70% NPKSZn + 2.4 ton poultry manure ha-1, T6: 50% NPKSZn + 5 ton compost ha-1 and T7: 70% NPKSZn + 3 ton compost ha-1). Results revealed that irrigation had no significant effect on the yield and yield parameters of boro rice. The treatment T4 showed the highest effective tillers hill-1, plant height, panicle length, 1000- grain wt., grain yield (6.96 t ha-1) and straw yield (6.03 t ha-1) which were lowest in T0 treatment. The highest grain (7.13 t ha-1) was recorded from the I1T4 treatment combination which was also identical to those of I0T4 (6.78 t ha-1), I0T5 (6.88 t ha-1), I1T1 (6.60 t ha-1), I1T5 (6.72 t ha-1). The lowest (3.84 t ha-1) from I0T0. The highest nutrient concentrations and uptake were recorded also in I1T4 treatment combination. The levels of organic matter and nutrient concentration were increased in the post harvest soils where manure plus inorganic fertilizer were used. It was concluded that application of I0T4 was most favorable for improving yield and yield contributing attributes of BRRI dhan 29.
Key Words: Cowdung, Poultry manure, Compost, NPKS, Irrigation, Rice, and Yield.