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Performance of Rock Phosphate and Triple Super Phosphate on Nutrient Dynamics and Yield of Rice (brri Dhan 39) in Transplanted Aman Season in a Piedmont Soil of Bangladesh

Md. Motasim Ahmmed
Senior Scientific officer (SSO)
Soil Resource Development Institute (SRDI), District Office, Ministry of Agriculture, Faridpur, Bangladesh

Md. Shafiqul Moula
Scientific Officer
SRDI, Regional Laboratory, Kushtia

Abu Zofar Mohammad Moslehuddin
Professor
Dept. of Soil Science, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A field experiment was done in the Old Himalyan Piedmont Plan Soil of Bangladesh at Wheat Research sub-center, Dinajpur-5200 to study the effect of application of rock phosphate (PR) in comparison with TSP as a source of P on the growth and yield of BRRI Dhan39 rice during transplanted Aman season. The experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications of each treatment. The treatments were T₁: control (0kg P ha^-1), T₂: PR (35 kg Pha^-1), T₃: TSP (35 kg P ha^-1), and T₄: PR (210 kg P ha^-1). Basal application was made with N, K, S and Zn. The results indicated that there was no statistical difference in dry matter yield at maximum tillering stage, but at panicle initiation stage the differences became evident over control treatment. Among the yield and yield contributing characters, the effective tillers hill^-1, filled grains panicle^-1 grain yield and straw yield were significantly varied with P treatments. The highest grain yield was recorded in T₄ treatment and the lowest yield and the lowest yield in control treatment. The yields due to different treatments ranked in the order of T₄> T₃> T₂ > T₁. The N, P, K and S contents as well as uptake by rice plant were also increased due to application of different treatment. The maximum N, P, K and S content as well as uptake in rice plant, grain and straw were recorded in T₄ treatment. The economic results showed that the highest net benefit of Tk. 21207 ha^-1was obtained in T_⁴ Treatment followed by Tk. 20930 ha^-1, Tk. 17918 ha^-1 and Tk. 16084 ha^-1 in T₃, T₂ and control treatments, respectively. The highest net benefit was obtained in T₄ treatment with higher rate of P but TSP (T₃ treatment) has better performance over rock phosphate (T₂ treatment) having the same rate of phosphorus (35 kg P ha^-1).

Keywords: Rock phosphate, Triple super phosphate, Rice yield, Economic benefit

Location: The farm of wheat Research sub-center, Rajbari at Dinajpur district

Start Date: 00-12-2013

End Date: 00-05-2014

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To study the effect of application of rock phosphate (PR) in comparison with TSP as a source of P on the growth and yield of BRRI Dhan39 rice during transplanted Aman season

Methodology:

The experiment was carried out in the farm of wheat Research sub-center, Rajbari at Dinajpur district during T. Aman season. The farm belongs to Agro-Ecological Zone 1, highland, well drained soil under Gangachara Soil Series. The land was above flood level and sufficient sunshine was available during the experimental period. The climate of the experimental area is in sub-tropical accompanied by moderate high rainfall associated with relatively high temperature during T. Aman season. The test crop was a rice variety (cv. BRRI Dhan39). The experimental design was Randomized Complete Block Design (RCBD) with Treatment: 4, Replication: 4, Total number of plots: 16. There were four treatments consisting of TSP and two rates of rock phosphate and a control. Treatments were T₁ = Control (0 kg p ha^-1), T₂ = Phosphate rock (PR) @ 35 kg P ha^-1), T₃ = Triple Super phosphate @ 35 kg P ha^-1), T₃= Phosphate rock (PR) @ 210 kg P ha^-1).The data of the agronomic characters of the crop were calculated as Plant height (cm), Number of tillers per hill, Panicle length (cm), Unfilled and filled grains per panicle, 1000-grain weight, Grain and straw yields (kg/plot). The soil properties studied included pH, organic matter, total N, available P and exchangeable K. Soil sample analysis and plant nutrient content analysis was done in Regional Laboratory, Faridpur of Soil Resource Development Institute and Dept. of Soil Science in Bangladesh Agriculture University, Mymensingh.The statistical analysis for different characters including the nutrient content and uptake were done following the ANOVA technique and the mean results in case of significant F-values were adjusted by the Duncan’s Multiple Range Test (DMRT).

Source of Information: Journal of Bioscience and Agriculture Research (JBAR), Vol. 01 (01): 17-25, 2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The economic results showed that the highest net benefit of Tk. 21207 ha^-1 was obtained in T₄ Treatment followed by Tk. 20930 ha^-1, Tk. 17918 ha^-1 and Tk. 16084 ha^-1 in T₃, T₂ and control treatments, respectively. The highest net benefit was obtained in T₄ treatment with higher rate of P but TSP (T₃ treatment) has better performance over rock phosphate (T₂ treatment) having the same rate of phosphorus (35 kg P ha^-1).

Knowledge Management: Journal