T. S. Hoque
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
I. Jahan
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
M.R. Islam
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
M. Ahmed
Soil Resources Development Institute, Farmgate, Dhaka-1215, Bangladesh
Cow dung, Poultry manure, Kazi jaibo shar, Rice, Yield, Nutrient uptake
Soil Science Field laboratory of Bangladesh Agricultural University, Mymensingh and a farmer’s field at Fakirakanda village of Mymensingh Sadar
Crop-Soil-Water Management
A comparative study was performed at two different locations viz. Soil Science Field laboratory of Bangladesh Agricultural University, Mymensingh and a farmer’s field at Fakirakanda village of Mymensingh Sadar during the boro season of 2017-2018. The soils of the experimental sites belong to the Sonatala series under the AEZ 9 (Old Brahmaputra Floodplain). The soil of BAU farm was silt loam in texture having pH 6.27, organic matter content 1.95%, total N 0.136%, available P 3.16 ppm, exchangeable K 0.095 % and available S 10.5 ppm whereas the soil of farmer’s field was loam in texture with pH 6.39, organic matter content 2.5%, total N 0.168%, available P 4.76 ppm, exchangeable K 0.13 me% and available S 12.47 ppm. The treatments at both locations were T0 (Control), T1 (75% RFD), T2 (100% RFD), T3 (75%RFD + Kazi Jaibo Shar 5 t ha-1), T4 (75% RFD + Kazi Jaibo Shar 3 t ha-1), T5 (75% RFD + Poultry manure 3 t ha-1) and T6 (75% RFD + Cow dung 5 t ha-1). Experiments was laid out in a Randomized Complete Block Design (RCBD) with three replications and the size of unit plot was 4 m × 3m. BRRI dhan28 was used for both of the experiments. Thirty-five days old seedlings of rice were transplanted in the experimental plots on 06 February, 2018 by maintaining a spacing of 20 cm × 20 cm. The doses of nitrogen (N), phosphorus (P), potassium (K), sulphur (S) and zinc (Zn) were 150, 20, 65, 18 and 2 kg ha-1 following the Fertilizer Recommendation Guide (BARC, 2012) in form of urea, triple super phosphate (TSP), muriate of potash (MoP), gypsum and zinc oxide, respectively. The full doses of chemical fertilizers except urea were applied before transplanting as basal dose to all the experimental plots. Organic manures viz. poultry manure, cow dung and Kazi Jaibo Shar were also applied during final land preparation. Urea was applied in three equal splits as top dressing; first installment at 12 days after transplanting (DAT), second installment at 30 DAT i.e. at maximum tillering stage and third installment at 50 DAT i.e. booting stage of the crop. Different intercultural operations such as irrigation, weeding, pest control were performed as and when required. The rice was harvested at full maturity on 10 June 2018.The data on growth and yield parameters such as plant height, number of effective tillers hill-1, panicle length, number of filled and unfilled grains panicle-1, 1000-grain weight, dry and fresh weight of root were recorded at harvest. The grain and straw yields were measured plot wise and expressed as t ha-1 on sundry basis. The collected grain and straw samples from each plot were dried in an oven at 65°C for about 48 hours and then ground by a grinding machine. Later, the ground samples were sieved through a 20-mesh sieve. The ground plant materials were stored in paper bags separately and placed in a desiccator. The plant samples were chemically analyzed for determination of N, P, K and S contents. The total N, available P, exchangeable K and available S of plant samples were determined following semimicro Kjeldahl method (Bremner and Mulvaney, 1982), modified Olsen method, NH4OAc extraction method, and CaCl2 extraction method, respectively.
SAARC J. Agri., 16(2): 153-166 (2018)
Journal