EFFECT OF FERTILIZER, MANURE AND IRRIGATION MANAGEMENT ON THE GROWTH, YIELD AND NUTRIENT ACCUMULATION IN T. AMAN RICE

Abstract

The experiment was conducted in the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from July 2012 to November 2012 to study the effect of various organic manure and inorganic fertilizer with difibrent water management on the growth and yield of T-Aman rice. I3RRI dhan 32 was used as the test crop in this experiment. The experiment consists of 2 factors i.e. irrigation and fertilizer plus manure. Two levels of irrigations (11 = Continuous flooding and lz= Alternate wetting and drying) were used with 8 levels of fertilizer plus manure, as T O: Control, Ti 100% N1 P 5K45S20Zn2 (Recommended dose), 12: 50% NPKSZn + 5 ton cowdung/ha, Tj: 70% NPKSZn + 3 ton cowdung/ha, T 4: 50% NPKSZn + 5 ton compostiha, T: 70% NPKSZn + 3 ton compost/ha, T: 50% NPKSZn + 3.5 ton poultry manure/ha and 17 : 70% NPKSZn 4 2.1 ton poultry manure/ha, with 16 treatment combinations and 3 replications. At the harvest, the yield parameters and yields were recorded; the irrigation had no significant single effect on the yield and yield parameters. The yield contributing characters and yield were significantly affected by fertilizer and manure and the highest effective tillers/hill (9.13), plant height (119.79 cm), panicle length (27.96 cm), 1000 grain wt. (21.67 g), grain yield (5.12 tlha) and straw yield (10.1 tiha) were found from T2 ( 50% NPKSZn + 5 ton cowdung/ha). T3 (70% NPKSZn + 3 ton cowdung/ha), T (70% NPKSZn + 3 ton compostiha), 1'4 (50% NPKSZn + 5 ton eompostJha), 17 (70% NPKSZn ± 2.1 ton poultry manure/ha) and T (100% N 1®Pi SICISSNZn2) treatment respectively and lowest in T( p treatment. The highest percent (38.3%) grain yield increase was obtained from 17 treatment. The higher grain yields were found by the application of organic plus inorganic fertilizers compared to the use of chemical fertilizer alone. The yield parameters were significantly influenced by combined application of irrigation and fertilizer and the highest grain yields (5.78 t/ha) were recorded from lj1 (Alternate wetting and drying + 70% NPKSZn 4- 2.1 ton poultry manure/ha) and lowest (3.42 tilia) from 121"o (Alternate wetting and drying + control treatment) treatment combination and 69% grain yield increased over control. The 1Aman rice grain and straw nutrient concentrations were sigiiificantly affected by the application of fertilizer and manure. The higher N,P,K & S concentrations and uptake were observed in the treatments where fertilizer plus manure were applied. The highest concentrations of grains N (1.295%), p (0.265%). K (0.282%) and S (0.204%) were recorded from T6. 1 3, [ j and T7 treatment respectively and lowest from T o treatment. Similarly, higher levels of N. P. K and S were uptaken by grain at 1' 4, T3. T6 and 17 treatment respectively compared to other fertilizer treatment.