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A Study on Comparative Performances of Hybrid and Convential Rice Varieties in Aman Season

M.A. AWAL
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Rahmatpur, Barisal

A.K.M.A.HABIB
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Rahmatpur, Barisal

M.A. HOSSAIN
T&C, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was done at farmer's field in Sherpur district to evaluate the comparative penformance of two hybrid rice varieties, Sonarbangla-2 and Sonarbangla-3 with three conventional modern commercial varieties BRRl dhan32, BRRl dhan33 and BR11 in Transplanted aman season of 2003. It revealed that the hybrids and conventional rice varieties differed significantly among themselves with respect to different parameters under study. The highest grain yield (6.20t/ha) was recorded from the hybrid Sonarbangla-3 followed BRRl dhan32 (5.70 t/ha) and the lowest in BRRl dhan33 (4.17t/ha) and these differences were statistically significant. However, BRRl dhan32 obtained significantly higher yield compared to the hybrid Sonarbangla-2. Further, it produced the maximum amount of straw (8.6 t/ha), which varied significantly with all others. Minimum days to 1^st flowering (92) and maturity (108) were noticed in Sonarbangla-2 followed by Sonarbangla-3 (95 and 115), respectively. Both the hybrid had heavier grain weight (28.33-31.00g) than those of the conventional varieties (22-25g) It was noted that the hybrids maintained distinct statistical edge over the conventional varieties with regard to most of the parameters. Thus, the hybrid Sonarbangla-3 was found superior to conventional varieties for transplanting in the aman season in BangladeSh.

Keywords: Sonarbangla-2, Sonarbangla-3, Conventional varieties, Cropping pattern

Location: Farmer's field in Sherpur district

Start Date: 00-00-2003

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate performances of hybrid rice in comparison with the recently BRRI released rice varieties in Aman season at the farmer's field of Sherpur district

Methodology:

An experiment was carried out with two hybrid rice varieties (Sonarbangla-2 and Sonarbangla-3) and three conventional varieties as checks (BR11, BRRl dhan32 and 33 ) at farmer's field in Sherpur district during the Transplanted aman season of 2003. The land type of the experimental field was medium high, sandy loam in texture and with pH 6.5. It belongs to the old Brahmaputra alluvial soil tract (Brammer e/.al. 1988). Experimental site was affected by high temperature (maximum 32.30⁰C), heavy rainfall (maximum 362.1 mm) and high humidity (maximum87.19 %) during the study period. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The plot size was 5 m x 4 m. The fertilizers were applied @ 245, 110 and 95 kg/ha Urea, TSP and MP, respectively. Full doses of TSP and MP were applied at the time of final land preparation. Urea was applied in three equal splits. One third was applied as basal and the remaining was top dressed at 30 and 60 days after transplanting. Forty days old seedlings were transplanted with a spacing of 25 cm x 15 cm. The plantation was done on 11 August 2003. Intercultural operations such as, weeding, irrigation, pesticide applications etc were followed to ensure normal healthy growth of the plants. The data on first flowering, days to harvest, yield and yield contributing characters were recorded, analyzed statistically and the means were compared by Duncan's Multiple Range Test (DMRT) (Gomez and Gomez, 1984).

Source of Information: J Agric Rural Oev 5(1&2), 13-16, June 200; ISSN 1810-1860

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The farmers of Sherpur district generally used T.aman-Fallow-Boro cropping pattern. For this reason the cropping intensity of this region was low. But instead of growing only the conventional rice varieties, if they would produce a hybrid one like Sonar Bangla-3, they might have some more benefits like confronting crisis usually appears during November-December in the study areas. These results indicated that after harvesting of short-duration hybrid rice Sonarbangla-3, farmers could cultivate different rabi crops like mustard/wheat/potato during the Fallow. Besides, they might have the opportunity for producing Boro as they did earlier. It may be concluded that the hybrid Sonarbangla-3 performed better than conventional varieties of rice. The hybrid may be recommended for cultivation during T.aman season.

Knowledge Management: Journal