Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Effect of Green Manures and Different Levels of Nitrogen on the Yield and Yield Components of Transplant Aman Rice

M.Y.A. Pramanik
Department of Agricultural Extension, Khamarbari, Dhaka

M.A.R. Sarkar
Department of Agronomy, BAU, Mymensingh - 2202, Bangladesh

M.A. Islam
Master Trainer, SPSS Project, DAE, Khamarbari, Dhaka, Bangladesh

M.A. Samad
Department of Agricultural Extension, Longadu, Rangamati, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during the period from May to November 1998 to investigate the effect of green manures and different levels of nitrogen on the yield and yield components of transplant aman rice (cv. BRRI Dhan32). The experiment comprised of 3 green manuring crops viz., Sesbania rostrata, Sesbania aculeata and Crotalaria juncea and 5 levels of N viz., 0, 20, 40, 60 and 80 kg ha^-1. Among the green manuring crops Sesbania rostrata produced the highest grain yield of transplant aman rice compared to other green manuring crops. The highest grain yield was obtained when the crop was fertilized with 40 kg N ha^-1 in combination with Sesbania rostrata. Sesbania aculeata exhibited similar behaviour as that of Sesbania rostrata but Crotalaria juncea showed lower performance in respect of yield and yield components of transplant aman rice. Sesbania rostrata also showed the best performance in respect of plant height, total number of tillers hill^-1, number of effective tillers hill^-1, number of grains panicle^-1, weight of 1000 grains and straw yield compared to other green manures.

Keywords: Green manure, Nitrogen, Yield, Yield components, Transplant aman rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-05-1998

End Date: 00-11-1998

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To investigate the effect of green manures and different levels of nitrogen on the yield and yield components of transplant aman rice (cv. BRRI Dhan32).

Methodology:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from May to November 1998. The experimental land was medium high in topography under the agro-ecological zone of Old Brahmaputra Floodplain (AEZ-9). The soil was silt loam in texture having pH 5.38 and 1.19% organic matter. The experiment consisted of 3 green manuring crops viz., Sesbania rostrata, Sesbania aculeata and Crotalaria juncea and 5 levels of N viz., 10, 20, 40, 60 and 80 kg ha^-1. The experiment was laid out in randomized complete block design with 3 replications. Seeds of green manuring crops were sown on 19 May 1998 using seed rates of 50, 40 and 50 kg ha^-1 for S. rostrata, S. aculeata and C. juncea, respectively. During land preparation green manures were fertilized with 10 kg N, 20 kg P₂O₅ and 15 kg K₂O ha^-1 before sowing. Sixty day old green manuring crops were chopped into pieces and incorporated in the soil. The mean fresh biomass and dry biomass production of shoots of 60 day old S. rostrata, S. aculeata and C. juncea were 18.41, 22.56 and 15.83 t ha^-1 and 4.57, 5.68 and 4.21 t ha^-1, respectively. The corresponding N addition through this green manures were 51.18, 35.22 and 31.57 kg ha^-1, respectively. Forty day old seedlings of transplant aman rice were transplanted at a spacing of 20x15 cm after 10 days of soil incorporation of green manuring crops. The plots were fertilized with 60 kg P₂O₅, 40 kg K₂O and 10 kg ZnS0₄ ha^-1 during land preparation. Nitrogen as specified in the treatment was applied in the form of urea in three equal installments at 20, 35 and 50 days after transplanting. All management practices were done in proper time starting from land preparation to crop harvest. Data were recorded on yield and yield components of transplant aman rice. Recorded data were analyzed statistically using “Analysis of Variance” technique and mean differences were adjudged with Duncan’s Multiple Range Test.

Source of Information: Journal of Agronomy, 3: 122-125, 2004; ISSN 1680-8207

Article Link (Online Journal): DOI: 10.3923/ja.2004.122.125; URL: http://scialert.net/abstract/?doi=ja.2004.122.125

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that Sesbania rostrata appeared as the promising green manuring crop compared to Sesbania aculeata and Crotalaria juncea and green manuring with Sesbania rostrata in combination with 40 kg N ha^-1 emerged out as a promising practice for the cultivation of transplant aman rice.

Knowledge Management: Journal