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Improving the Existing Direct Wet-seeded Mixed Rice Cultivation, Aus and Aman 2008

Dr. Md. Shafiqul Islam Mamin
Principal Scientific Officer
ARD BRRI, Gazipur

Md. Rafiqul Islam
SSO
ARD BRRI Gazipur

Abstract/ Executive Summary:

The trial was conducted in farmers field at Nesarabad upazila. Objective of this study was to increase the productivity of Aus rice through introduction of HYVs and use of drum seeder for improved method of crop establishment. In Nesarabad, BRRI dhan27 produced nearly three times higher grain yield than local Aus cultivar, Surjamoni shaita irrespective of crop establishment methods, broadcasting and seeded by drum seeder. For higher yield, the farmers were very much interested to grow BRRI dhan27. Aus varieties seeded by drum seeder produced 8% increased grain yield over broadcasting both in Nesarabad and Banaripara. But in Aman season similar grain yield was found in both crop establishment methods. In both locations, BRRI dhan27 was nearly 30 cm taller than local aus Surjamoni shaita and hence it was safe at high tide. Because of tall plant type, BRRI dhan27 could be seen easily above water level and easily could be harvested. Hence the farmers were highly impressed. Growth duration of BRRI dhan27 and local Aus variety Surjamoni shaita were similar (115-118 days).

Keywords: Direct wet-seeded, Mixed rice cultivation, Aus and Aman

Location: Nasarabad upazila of Pirojpur and Banaripara of Barisal

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To increase the productivity of Aus rice through introduction of HYVs and use of drum seeder for improved method of crop establishment.

Methodology:

BRRI dhan27 and Surjamoni shaita were used as Aus rice along with Joina as Aman varieties in the trial. The trial was conducted in farmers field at Nesarabad upazila. All seeds were mixed together 22 and adequate sprouted seeds were seeded on puddled soil by hand broadcasting and by drum seeder. Three varieties were arranged in four different combinations and the land area was 100 Sq.m for each combination. The treatments were as follows: T₁ = Surjamoni shita + Joina Broadcasting T₂ = Surjamoni shita + Joina Seeded by drum seeder T₃ = BRRI dhan27 + Joina Broadcasting T₄ = BRRI dhan27 + Joina Seeded by drum seeder The selected fields were ploughed, leveled and puddled with tidal water. Recommended doses of chemical fertilizers except urea for Aus (75: 12: 32: 8: 2 kg N P K S & Zn/ha) were applied at basal. Urea was applied as top dress in three equal splits. After Aus harvest no fertilizers were applied. Weeding and other intercultural operations were done properly as and when necessary. Data on plant height, growth duration, yield and yield contributing characters were collected.

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2008-2009

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Weed control was easier in drum-seeded plot than broadcasted ones in Aus season. Hence, farmers are interested to use drum seeder in Lum method of rice cultivation

Knowledge Management: Report/Proceedings