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Performance of Photosensitive Modern Rice Varieties in the Medium Highland Phase-2 After Boro Rice

M. Harunur Rashid
Rice Farming Systems Division, BRRI, Gazipur - 1701, Bangladesh

A.H. Khan
Rice Farming Systems Division, BRRI, Gazipur - 1701, Bangladesh

M.A. Quddus
Rice Farming Systems Division, BRRI, Gazipur - 1701, Bangladesh

N.E. Elahi
Rice Farming Systems Division, BRRI, Gazipur - 1701, Bangladesh

A. Saha
Rice Farming Systems Division, BRRI, Gazipur - 1701, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted to evaluate the modern photosensitive rice varieties, BR22, BR23, Binasail and an advanced line BR5226-6-3-3 and widely cultivated local variety Telosh for increasing the productivity of medium high land phase-2. BR5226-6-3-3 gave the highest grain yield of 4.14 t ha^-1 followed by BR23 (3.96 t ha^-1). The higher grain yields of BR5226-6-3-3 and BR23 were associated with higher number of filled grains panicle^-1 and heavier grain weight. Economic analysis indicated that cultivation of BR5226-6-3-3 and BR23 after Boro rice gave about 36 and 31% additional gross margins than the existing local variety, Telosh.

Keywords: Photosensitive rice variety, Productivity, Medium high land (Phase - 2), Boro rice

Location: Farmer’s field of Bangladesh Rice Research Institute, Farming Systems Research and Development site, Kapasia

Start Date: 00-11-2000

End Date: 00-01-2002

Program Area: Knowledge Management

Commodity: Rice

Objectives:

The present study was undertaken to identify the late-planted Aman varieties for good fit into the existing cropping system for maximizing the production of ecotype.

Methodology:

The experiment was conducted at the farmer’s field of Bangladesh Rice Research Institute, Farming Systems Research and Development site, Kapasia during November 2000 to January 2002. The soil was clay loam in texture under medium high land, phase 2 belonging to the Madhupur tract soils of agro-ecological zone 28. The experiment included four modern photosensitive varieties and line, BR22, BR23, Binasail and BR5226-6-3-3 along with a widely cultivated local variety, Telosh. The study was laid out in a randomized complete block design with three disperse replications at farmer’s field. In Boro season, widely cultivated BRRIdhan28 was transplanted on January 7, 2000 with the seedling age of 45 days following 2-3 seedlings hill^-1. In transplanted aman season, crops were transplanted on September 24, 2001 with the seedling of 35 days of age following 3-4 hill^-1. Other intercultural operations were done as required. Crops were harvested at maturity during May 24-25 in Boro season and late December to first week of January. Data on individual plant and yield contributing characters were recorded from the eight randomly selected hills per plot, whereas grain, straw and total dry matter yield from the harvested area of 10 m²per plot and these were converted into per unit basis. The grain yield was expressed in ton per ha^-1 at 14% moisture level. Data were analyzed statistically and mean comparison was done by Duncan’s new multiple range test (DMRT). Economic analysis was done based on prevailing market price of all input and output costs.

Source of Information: Journal of Agronomy, 1: 71-73, 2002; ISSN 1680-8207

Article Link (Online Journal): DOI: 10.3923/ja.2002.71.73; URL: http://scialert.net/abstract/?doi=ja.2002.71.73

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Growing improved photosensitive lines and varieties, BR5226-6-3-3, BR23 and BR22 following BRRIdhan28 gave an average yield advantages of 0.94, 0.75 and 0.41 t ha^-1, respectively which contributed to additional gross margins of 36, 31 and 20%, respectively. In terms of profitability the systems, BRRIdhan28-Fallow-BR5226-6-3-3, BRRIdhan28-Fallow-BR23 and BRRIdhan28-Fallow-BR22 performed better than BRRIdhan28-Fallow- Binasail.

Knowledge Management: Journal