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Effect of Different Levels of Nitrogen on Growth and Yield of Promising Hybrids in Comparing with Recommended BRRI Varieties

Afsana Ansari
Scientific Officer
Hybrid Rice Division Bangladesh Rice Research Institute Gazipur-1701

F. Rahman
Senior Scientific Officer
Soil Science Division Bangladesh Rice Research Institute Gazipur-1701

Abstract/ Executive Summary:

This study was carried out at BRRI Gazipur in Aman season during 2006. The objective of this study was to find out the suitable dose of nitrogen on the yield of promising hybrids.Two hybrids (BRRI 1A/BR827R & BRRI 1A/BR168R) along with BRRI dhan30 & BRRI dhan34 were transplanted with 32 days old seedling in an individual plot area: 48 m². Application of nitrogen @ 40 and 80 kg/ha gave almost similar yield for both the tested entries. The promising hybrids out yielded by 0.45 & 0.73 t/ha at 40 kg N/ha and 0.52 and 0.52 t/ha at 80 kg N/ha, respectively than BRRI dhan 30 with similar growth duration. From the trial it was observed that nitrogen fertilizer application in between 40-80 kg/ha may be the optimum dose for higher yield of BRRI 1A/BR827R & BRRI 1A/BR168R.

Keywords: Nitrogen, Growth and yield, Promising hybrids and BRRI varieties

Location: BRRI Gazipur.

Start Date: 00-00-2006

End Date: 00-00-2006

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To find out the suitable dose of nitrogen on the yield of promising hybrids.

Methodology:

This study was undertaken at BRRI Gazipur in Aman season during 2006. Two hybrids (BRRI 1A/BR827R & BRRI 1A/BR168R) along with BRRI dhan 30 & BRRI dhan 34 were transplanted with 32 days old seedling in an individual plot area: 48 m². The plots were laid out in split plot with three replications. Spacing was 20 cm x 20 cm. Fertilizers doses: Six N doses-0, 40, 80, 120 & 160 kg N/ha, P, K, S & Zn @ Kg/ha were applied on STB estimated in the trial at land preparation. Water and insects-pests management was done when it was required.

Source of Information: Proceedings of the BRRI Annual internal Review for 2006-07

Article Link (Online Journal):

Funding Source:

1. Government	Budget:
2.	Budget:

Total Budget (Tk.) :

Achievement/Findings:

Application of nitrogen @ 40 and 80 kg/ha gave almost similar yield for both the tested entries. The promising hybrids out yielded by 0.45 & 0.73 t/ha at 40 kg N/ha and 0.52 and 0.52 t/ha at 80 kg N/ha, respectively than BRRI dhan 30 with similar growth duration. From the trial it was observed that nitrogen fertilizer application in between 40-80 kg/ha may be the optimum dose for higher yield of BRRI 1A/BR827R & BRRI 1A/BR168R.

Knowledge Management: Report/Proceedings