B.R. Dey
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
M.M. Rahman
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
M.A. Hoque
Professor
Department of Soil Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Phosphorus; potassium, Sulphur, Split application, Rice growth
Soil Science Field laboratory of Bangladesh Agricultural University (BAU), Mymensingh
Crop-Soil-Water Management
The field experiment was carried out at the Soil Science Field laboratory of Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh during the boro (winter) season of 2011. Soil physicochemical properties - Soils were collected from the Soil Science Field Laboratory, BAU and analyzed for some physicochemical properties. Characteristically, the soil was silt loam having pH 6.48, total N 0.15%, available P 12.80 ppm, exchangeable K 0.11 me/100g soil, available S 11.50 ppm and organic carbon 1.16%. Plant materials and treatments - BRRI dhan29, a modern variety of rice, was used as test crop. Thirty-day-old healthy seedlings were transplanted in the experimental plots. Eight treatment combinations were used in the experiments.
T0: Control (No fertilizer application)
T1: 100% PKS at transplanting
T2: 100% PK at transplanting + 50% S at transplanting + 50% S at maximum tillering
T3: 100% PS at transplanting + 50% K at transplanting + 50% K at maximum tillering
T4: 100% KS at transplanting + 50% P at transplanting + 50% P at maximum tillering
T5: 50% PKS at transplanting + 50% PKS at maximum tillering
T6: 25% N from cowdung at final ploughing + 75% N from urea (25% at transplanting + 25% at maximum tillering + 25% at panicle initiation stage)
T7: 100% USG and 50% PKS at transplanting + 50% PKS at maximum tillering
In treatments T1-T5, 100% N was applied as prilled urea.
The amounts of N, P, K and S required for each plot were calculated as per their rates of application. Fertilizers were applied in splits according to the treatments. The experiment was laid out in a randomized complete block design with three replications. Management practices, crop harvesting and data recording - Fertilization and other management practices were performed as and when required. The crops were harvested at full maturity. Grain and straw yields and plant parameters were recorded. Chemical analysis of plant and soil samples - Plant and soil samples were analyzed at the Soil Science Laboratory, BAU. The P, K and S content in plant and soil were determined following standard methods. Statistical analysis - Data were statistically analyzed by analysis of variance using MSTAT-C. The significance of differences between mean values was compared by Duncan’s Multiple Range Test.
J. Soil Nature 7(1):7-12, (2014)
Journal