EFFECT OF FERTILIZER AND MANURE WITH DIFFERENT WATER MANAGEMENT ON THE GROWTH, YIELD AND QUALITY OF BRRI DHAN 28

Abstract

The experiment was conducted in the farm of Sher-e-Bangla Agricultural University, Dhaka. Bangladesh during the period from December 2010 to April 2011 to study the effect of various manure and inorganic fertilizer with different water management on the growth and yield of boro rice. BRRI dhan28 was used as the rice variety in this experiment. The experiment consists of 2 factors i.e. irrigation and fertilizer plus manure. Two levels of irrigations (1 0 = Alternate wetting and drying and I,= Continuous flooding) were used with 8 levels of fertilizer plus manure, as To: Control, T 1 : 100% RDCF N1 P15 K.45S20 Zn2. i'2: 10 ton cowdung/ha, T 3: 50% RDCF ± 5 ton cow dung/ha, T4: 8 ton poultry manure/ha, T5: 50% RDCF + 4 ton poultry manure/ha, T6: 10 ton vermicompostlha and T7 : 50% RDCF 4- 5 ton vermicompostiha with 16 treatment combinations and 3 replications. At the harvest, the yield parameters and yields were recorded and the grain and straw samples were analyzed for N. P, K and S. The irrigation had no significant single effect on the yield and yield parameters while the higher yields were obtained from continuous flooding (Ii). The Yield contributing characters and yields were significantly affected by fertilizer and manure and the highest effective tillers/hill (11.17). panicle length (22.90 cm), 1000 seed wt. (21.83 g), grain yield (5.92 kg/plot) and straw yield (5.91 kg/plot) were found from T 5 (50%RDCF + 4 ton poultry manure/ha) treatment and lowest in To treatment. The higher grain and straw 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 (5.93 kg/plot) and straw yields (6.42 kg/plot) were recorded from 1o1'5 (Alternate wetting and drying + 50% RDCF+ 4 ton poultry manure/ha) and lowest grain yield (3.64 kg/ha) from 1 1 T0 (Continuous flooding + control) treatment combination and 63% grain yield increased over control. Irrigation did not significantly influence the grain and straw nutrient concentration and uptake while higher amounts of NPKS were up taken in continuous flooding. The boro rice grain and straw nutrient concentrations were significantly affected by the application of fertilizer and manure and application of fertilizer plus manure. The highest concentrations of grain N (1.392 %), P (0.280 %), K (0.356 %), S (0.128 %) and straw NPKS were recorded from T5 treatment and lowest from To treatment. Similarly, nutrient concentrations were recorded in 10T 5 and 11T5 treatment combinations. The levels of organic matter and nutrient concentration were increased in the post harvest soils where manure plus inorganic fertilizer were used.