Dr. M. Rafiqul Islam
Professor
Department of Soil Science, Bangladesh Agricultural UniversityMymensingh
H. Afroz
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
A. B. Siddique
Department of Coastal Agriculture, Noakhali Science and Technology University, Sonapur, Noakhali-3814, Bangladesh
M. B. Rashid
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Cowdung, Poultry manure, Compost, BRRI dhan49, Yield, Nutrient uptake
Bangladesh Agricultural University , Mymensingh
Crop-Soil-Water Management
The experiment was carried out in the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during the Aman season of 2011. The soil belongs to Sonatala series under the Agro- ecological Zone (AEZ) of Old Brahmaputra Floodplain. The experimental soil was silt loam in texture having pH 6.18, organic matter content 2.15%, total N 0.124%, available P 6.51 ppm, exchangeable K 0.074 me/100 g soil, available S 14.85 ppm and CEC 12.5 me/100 g soil. BRRI dhan49, a high yielding variety of rice was used in this experiment as test crop. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The experiment contained six treatments: T0= Control, T1 = STB-CF (HYG), T2= CD + STB-CF (HYG), T3= PM + STB-CF (HYG), T4= COM + STB-CF (HYG) and T5= Farmers’ practice (FP). Here, STB=Soil Test Basis, CF=Chemical fertilizer, CD = Cowdung, PM = Poultry manure, COM=Compost, FP=Farmers’ practice, HYG=High yield goal. Organic manures including cowdung, poultry manure and compost were applied to the experimental plots @ 5, 3 and 5 t ha-1, respectively. The nutrient content of manures has been depicted .The recommended dozes of N, P, K and S supplied from urea, TSP, MoP and gypsum were 90, 15, 60 and 15 kg ha-1, respectively. Triple super-phosphate (TSP), muriate of potash (MoP), and gypsum were applied as basal dose to all the experimental plots. The amounts of N, P, K, and S coming from cowdung, poultry manure and compost were deducted from recommended N, P, K and S fertilizer doses on IPNS basis. Cowdung, poultry manure and compost were incorporated in the plots as per treatments 10 days before transplanting of the rice seedlings. The manure was mixed thoroughly with the soil. Urea was applied in three equal splits. The first dose of urea was applied 15 days after transplanting of rice seedlings. The rest doses of urea were top dressed 30 (active tillering stage) and 45 days after transplanting (panicle initiation stage). Thirty-day old seedlings of BRRI dhan49 was transplanted in the plots maintaining a plant spacing of 20 cm x 20 cm. Three healthy seedlings were transplanted in each hill. Intercultural operations such as irrigation and weeding were done as and when necessary. The crop was harvested at full maturity. Grain yield was recorded on 14% moisture basis and straw yield on sun dry basis. Five hills were randomly selected from each plot at maturity to record the yield contributing characters. Grain and straw samples were analyzed for N, P, K and S concentration following standard methods (Page et al., 1982). The NPKS uptake by grain and straw was calculated from the nutrient contents and yield data. All the data were statistically analyzed by F-test and the mean differences were adjudged by DMRT at 5% level.
J. Bangladesh Agril. Univ. 12(1): 67–72, 2014
Journal