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Effect of Nitrogenous Fertilizer and Green Manure on Transplanted Aman Rice

S.M. Mahmudul Hasan
M.S. Student
Dept. of Soil Science, Sher-e-Bangla Agricultural University, Dhaka

Abstract/ Executive Summary:

The study was carried out at Sher-e-Bangla Agricultural University Research Farm during August to December 2012 to know the effect of N fertilizers (Urea) and green manure (Dhaincha) on T. Aman rice (var. BRRI dhan33.The result demonstrated that the yield contributing characters, grain and straw yields were significantly influenced by the added N fertilizers and green manure. Application of 80 kg N as urea and 60 kg N from green manure produced the highest grain yield. In case of straw yield, the treatment T₅ produced the highest yield. The treatments T₄ and T₅ resulted in higher nutrient use efficiency along with higher N, P, K and S uptake by the T. Aman rice. The application of N fertilizer along with green manure increased the total N, available P and available S and exchangeable K in post-harvest soils.

Keywords: Nitrogenous fertilizer, Green manure, Aman rice

Location: Sher-e-Bangla Agricultural University Research Farm

Start Date: 00-08-2012

End Date: 00-12-2012

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To study the integrated effect of N fertilizer (Urea) and Green manure (Dhaincha) on the yield and yield attributes of T. Aman rice
To evaluate the effect of different doses of nitrogen fertilizer and green manure on the yield and yield attributes of T. Aman rice
To find out the combined requirement of N fertilizer and green manure for maximizing yield of T. Aman rice.

Methodology:

The fertitizer treatments used in the study was based on BARC fertilizer recommendation guide 2005. Nitrogen and green manure were used in the study. This is a single factor experiment consisting of 9 treatments. The treatments are as follows:

T₁: 140 kg N as Urea (Recommended dose)

T₂: 120 kg N as urea + 20 kg N as Green manure (GM)

T₃: 100 kg N as urea + 40 kg N as GM

T₄: 80 kg N as urea + 60 kg N as GM

T₅: 60 kg N as urea + 80 kg N as GM

T₆: 40 kg N as urea + 100 kg N as GM

T₇: 20 kg N as urea + 120 kg N as GM

T₈: 140 kg N as GM

T₉: 70 kg N as urea + 70 kg N as GM

Source of Information: M.S. Thesis, S.M. Mahmudul Hasan, M.S. Student, Registration No. 06-01936, Dept. of Soil Science, Sher-e-Bangla Agricultural University, Dhaka

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Finding of the study indicated that the use of 80 kg N as urea (173.90kg/ha) and 40 kg N from green manure (Dhaincha 2.71 t/ha) should be encouraged to replenish the deteriorating soil fertility and increased crop yield of T. Aman rice.

Knowledge Management: Thesis