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Interaction Effects of Sulphur and Phosphorus on Wetland Rice

M. M. Ali
MS Student
Department of Soil Science Division, BAU, Mymensingh

M. S. Mian,
Scientific Officer
Plant Pathology Division, BRRI, Gazipur-1701

A. Islam
Scientific Officer
Soil Science Division, BRRI, Gazipur-1701

J. A. Begum
Scientific Officer
Plant Pathology Division, BRRI Gazipur

A. K. M. Ferdous
Agricultural Advisory Society, Sreemongal, Sylhet.

Abstract/ Executive Summary:

An experiment was conducted in the Old Brahmaputra Floodplain Soil at Bangladesh Agricultural University (BAU) farm with a view to studying the interaction effects of S and P on growth and yield of BRRI dhan29 rice variety. Ten fertilizer treatment combinations such as S₀P₀, S₀P₃₅, S₁₀P₀, S₁₀P₃₅, S₂₀P₀, S₂₀P₃₅, S₃₀P₀, S₃₀P₃₅, S₄₀P₀and S₄₀P₃₅ were tested. Sulphur was applied @ 0, 10, 20, 30 and 40 kg ha^-1, while phosphorus application rates were 0 and 35 kg ha^-1. The experiment was set up in a randomized complete block design with four replications. It was observed that the dry matter yield of rice plant at maximum tillering stage, grain and straw yields were significantly increased due to combined application of S and P (S₄₀P₃₅). This combination increased 20% higher dry matter, 61.1% higher grain yield and 65.1% higher straw yield than the control plot (S₀P₀). Nutrient concentrations and uptake by rice plants also increased with the treatment combination of S₄₀P₃₅. So this treatment combination was found suitable for growth and yield of BRRI dhan29 rice variety.

Keywords: Interaction, Sulphur, Phosphorus, Rice

Location: Bangladesh Agricultural University (BAU) farm, Mymensingh

Start Date: 01-11-1998

End Date: 30-06-1999

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To investigate the interaction effects of sulphur (S) and phosphorus (P) on growth and yield of BRRI dhan29 rice variety.

Methodology:

The experiment was carried out during Boro season (dry season) in a typical rice growing soil of Bangladesh, located in the BAU farm at Mymensingh nearly 1 km away from the west of the Brahmaputra river. The soil type of the farm belongs to the Non-Calcareous Dark Grey Floodplain under Sonatola soil series. The reaction of the soil was around neutral (pH 6.8). The soil was silt loam in texture with total N 0.10%, available P 15.60 ppm, exchangeable K 0.21 me 100^-1g soil and available S 11.5 ppm. An analysis of the soil was done following some standard laboratory procedure. A modern rice variety BRRI dhan29 was selected as the test crop. The treatment consisted of 5 levels of S (0, 10, 20, 30 and 40 kg ha^-1) and two levels of P (0 and 35 kg ha^-1). There were 10 fertilizer treatment combinations as S₀P₀, S₀P₃₅, S₁₀P₀, S₁₀P₃₅, S₂₀P₀, S₂₀P₃₅, S₃₀P₀, S₃₀P₃₅, S₄₀P₀, and S₄₀P₃₅. Nitrogen and potassium fertilizers were applied as blanket dose one day prior to transplanting in all experimental plots @ 100 kg Nha^-1 and 50 kg Kha^-1 respectively. Urea, TSP, MP and Gypsum were used as the sources of N, P, K and S, respectively. The experiment was laid out in a Randomized Complete Block design with 4 replications of each treatment having unit plot size 10 m² (4 X 2.5 m). Nitrogen was applied in three equal splits, before transplanting at final land preparation, at active tillering stage at 30 days after transplanting and at the pre-booting stage. Forty-day old seedlings of BRRI dhan29 were transplanted maintaining a spacing of 20 x 20 cm. Necessary intercultural operations was done as and when required during growth period of crop. Ten random hills were harvested from each plot at active tittering stage and dry matter yield was recorded after oven drying at 60-70°C for 72 h. Rice plants were harvested at maturity for grain and straw yield. Grain yield was recorded at 14% moisture content while straw yield was recorded as oven dry basis. The data was analyzed as per standard statistical procedures.

Source of Information: Asian Journal of Plant Sciences, 3: 597-601. 2004

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall results indicate that the application of S and P @ 40 kg ha^-1 and 35 kg ha^-1, respectively can ensure good growth and reasonably high yield of BRRI dhan29 under the Brahmaputra Floodplain soil condition.

Knowledge Management: Journal