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Screening Rice Varieties for Less Arsenic Uptake

Pranesh Kumar Saha
Principal Scientific Officer
Soil Science Division, BRRI Gazipur

M. Z.Asfar
Scientific Officer
Soil Science Division, BRRI Gazipur

S. Kaiser Zaman
Cheif Scientific Officer
Soil Science Division, BRRI Gazipur

A. Rashid
Cheif Scientific Officer
Irrigation and Water management Division, BRRI Gazipur

A K G M Enamul Hoque
Cheif Scientific Officer
Plant Breeding Division, BRRI.

Abstract/ Executive Summary:

Among the 26 genotypes, BRRI hybrid dhan1 demonstrated the highest grain yield (9.05 t/ha) in Bhanga, Faridpur, followed by BRRI hyrid dhan2. In this location, BR-1 yielded the lowest amount of rice grain (5.02 t/ha). Similarly, in Ashrafpur, Kachua BRRI Hybrid dhan-and 2 secured the top two positions among the 26 genotyes. However, in this location, BRRI hybrid dhan2 demonstrated the highest yield capacity (6.90 t/ha) than BRRI Hybrid dhan-1 (6.52 t/ha). On the other hand, BR-9 produced the lowest amount of grain (2.92 t/ha) in Kachua. In Domrakandi, Faridpur, BRRI dhan-29 demonstrated the highest Production capacity of 7.57 t/ha followed by BRRI hybrid dhan1 (7.52 t/ha), where BRRI dhan-35 yielded the lowest amount of grain (3.87 t/ha).

Keywords: Arsenic uptake, BRRI varieties, Genetic variability

Location: Bhanga and Domrakandi of Faridpur district and Ashrafpur, Kachua upazilla of Chandpur District.

Start Date: 01-07-2009

End Date: 30-06-2010

Program Area: Risk Management in Agriculture

Commodity: Rice, Arsenic

Objectives:

To find out genetic variability of Boro rice varieties for yield and As content in rice grain in As contaminated soils.

Methodology:

A total of 26 genotypes of BRRI varieties were tested in the above three locations. The experimental design was RCB with three replications. 46 and 57 days old seedlings were transplanted in Faridpur and Chandpur in 5m² plots. In two sites of Faridpur fertilizer was applied at the rate of N-P-K-Zn @114-18-60-10-2 kg/ha and at Ashrafpur the fertilizer rate was 130-15-50-10-3 from urea, TSP, MoP and gypsum. Initial soil samples (0-15 cm) were collected from the plots before land preparation. STW water samples were also collected for As determination. At maturity, the crop was harvested from the whole plot (5m²) and grain yield was recorded. Although Plant and soil samples were dried and processed before digestion in tri-acid mixture for As-analysis, the digested samples were not analyzed in time for instrumental problems. At present analysis of the digested samples is running.

Source of Information: Proceedings of BRRI Annual Internal Review for 2009- 2010

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among the 26 genotypes, BRRI hybrid dhan1 demonstrated the highest grain yield (9.05 t/ha) in Bhanga, Faridpur, followed by BRRI hyrid dhan2.

Knowledge Management: Report/Proceedings