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Performance of Aus Rice Varieties in Northwest Bangladesh Amid Climate Change

M.M. Rashid
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

A.K. Ghosh
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

M.N. Roni
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

M.R. Islam
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

M.M. Alam
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

S. Ahamed
Agriculture and Environment Unit, RDRS Bangladesh, Rangpur, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted at RDRS Bangladesh farm, Monthana, Rangpur, Bangladesh during April to August 2016 to evaluate the yield performance of six aus rice varieties of Bangladesh viz. BRRI dhan43, BRRI dhan48, BRRI dhan55, BRRI dhan62, BRRI dhan28 (BRRI dhan55 and BRRI dhan28 is a boro recommended and BRRI dhan62 in amon recommended but all are photo-insensitive so those can be cultivated year round and BRRI dhan28 is a late boro which known as Boro aus in northwest area) and Pariza. The experiment was laid out in a randomized complete block design with three replications under rainfed condition by using rain water instead of ground water. Total 1532.2 mm rainfall occurred during the cultivation period (April to July 2016). The entire yield contributing attributes varied significantly among the varieties. The highest plant height (108.11 cm) was observed in BRRI dhan28 and the lowest (93.67 cm) in Pariza. In the variety BRRI dhan55 number of filled grains panicle^-1 was found highest (105.44) and the lowest (85.0) was recorded in the variety BRRI dhan48. BRRI dhan48 produced the highest 1000-grain weight (25.3 g) and the lowest (23.73 g) was recorded from the variety Pariza. The highest grain yield (3.42 t ha^-1) was obtained from BRRI dhan43 and the lowest grain yield (2.33 t ha^-1) was obtained from BRRI dhan28. Among the six aus rice varieties under Northwest condition BRRI dhan43 and BRRI dhan48 are suitable in respect of yield and there are many scope of aus rice cultivation under rainfed condition to reduce ground water use as well as to ensure food security.

Keywords: Yield, Yield contributing characters, Rainfed, Aus,

Location: RDRS Bangladesh farm, Monthana, Rangpur, Bangladesh

Start Date: 00-04-2016

End Date: 00-08-2016

Program Area: Variety and Species

Non-commodity: Performance

Objectives:

This study aims to evaluate yield performance of six rice varieties during aus season and explore high yielding rice varieties to farmers for increasing aus rice cultivation by using of rain water.

Methodology:

The experiment was conducted at the RDRS Bangladesh farm, Monthona, Rangpur during aus season (April- August) of 2016 to find out the yield performance of aus rice in response to variety and minimize ground water use in rice cultivation. The experimental site was a medium high land with loamy soil. The experiment was conducted with six rice varieties namely BRRI dhan43, BRRI dhan48, BRRI dhan55, BRRI dhan62, BRRI dhan28 and Pariza. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The plot size was 8.0m x 5.0m (1 Decimal). Twenty days old seedlings were transplanted at 25 cm x 20 cm spacing using 3 seedlings per hill. During land preparation for seedling transplanting TSP, MoP, Gypsum and Zinc sulfate were applied at the rate of 60, 75, 38 and 6 kg ha^-1 as basal dose. Urea was applied in two equal installments at 15 and 35 days after transplanting. Intercultural operations like weeding, gap filling, drainage and pest management were done as and when necessary. From three hills (excluding border hills) randomly selected in each plot to record yield contributing attributes. Then all plots were harvested to obtain grain and straw yield. Data were collected on different growth parameters such as plant height, tiller number and yield contributing characters viz. number of effective tillers per hill, length of panicle, number of grains panicle^-1, 1000–grain weight (TGW), grain yield, straw yield, biological yield and harvest index. Rainfall data is collected from Bangladesh Meteorological Department (BMD). The collected data were analyzed statistically using the “analysis of variance (ANOVA)” and treatment means were compared using Duncan’s Multiple Range Test (DMRT).

Source of Information: Int. J. Sustain. Crop Prod. 12(2):7-10 (May 2017)

Article Link (Online Journal): http://ggfjournals.com/e-journals archive

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the results it can be concluded that among tested six rice varieties variation exists in different growth parameters and yield as well as yield contributing characters during aus season and BRRI dhan48 is high yielding than others in northwest condition. Therefore we can explore BRRI dhan48 as high yielding aus rice variety to farmers.

Knowledge Management: Journal