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Effect of Sowing Methods on the Yield and Yield Components of Upland Aus Rice in the Coastal Areas of Bangladesh

K.P. Halder
Farm Management Division, Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh

M.J.U. Chowdhury
Farm Management Division, Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh

N. Ahmed
Entomology Division, Bangladesh Rice Research Institute, Gazipur-1701Bangladesh

M. Hasan
Entomology Division, Bangladesh Rice Research Institute, Gazipur-1701Bangladesh

S.S. Parul
Training Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the coastal area in the aus season of 1994 and 1995 at the Bangladesh Rice Research Institute (BAAl) Regional Station, Sonagazi Farm, Feni to find out the suitable sowing method and rice cultivar for the said area. Experimental treatments consisted of i) two rice cultivars viz. BR21 and a local cuitivar Binnatoa and II) three sowing methods viz. broadcasting, line sowing and dibbling. The results revealed that irrespective of cuitivars, dibbling method produced the highest number of tillers, panicles, filled grains panicle/1000-grain weight and, grain yield followed by line sowing and broadcasting method. in case of cultivars, Binnatoa produced the highest number of tiller m^-2 and panicles m^-2 than BR21. But BR21 gave the highest filled grains panicle^-1 and 1000- grain weight.

Keywords: Sowing method, Coastal area and Rice cultivar

Location: Bangladesh Rice Research Institute (BRRI) Regional Station, Sonagazi Farm, Feni

Start Date: 01-03-1994

End Date: 30-06-1995

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To find out the suitable sowing method and cultivar of rice in coastal areas under rainfed condition among the studied variety and sowing methods.

Methodology:

A field experiment was conducted in the aus season of 1994 and 1995 at the Bangladesh Rice Research Institute (BRRI) Regional Station, Sonagazi Farm, Feni located at the south-east coastal areas of Bangladesh. The test location was a medium high land with silty loam having pH 7.1, organic matter 1.70%, total N 0.073%, available P(Oisen) 13.1 ppm and exchangeable K 0.31 meq 100^-1 g soil. The experiment treatments were i) two rice cultivars viz. BR21 and "Binnatoa" and ii) three sowing methods viz broadcasting, line sowing and dibbling. The experiment was laid out in a completely randomized block design (CRBD) with three replications. The unit- plot size was 6x5 m². The seed rate was 80, 50 and 30 kg ha-1 for broadcasting, line sowing and dibbling methods, respectively. The seeds were sown at a spacing of 20 cm for line sowing and 20x20 cm for dibbling methods. The soil Fertilizers as N, P₂0₅, K₂0 and S were applied at the rate of 60-40-40-10 kg ha^-1 from urea, triple supper phosphate, muriate of potash and gypsum, respectively. All fertilizers and one third of urea were applied as basal dose and rest of it was applied in two equal splits which were top dressed at 20 days after sowing (DAS) and 7 days before panicle initiation (PI). The observations as tillers, panicles, filled grain production and 1000 grain weight were area of each plot at the maturity of the crop. Grain yield was recorded from whole plot basis and adjusted at 14% moisture content. The salinity level of the experimental plots were recorded at sowing, vegetative, reproductive and maturity of the crop. The collected data were analyzed following a standard statistical procedures (Gomez and Gomez, 1984).

Source of Information: Bangladesh J. Agril. Sci. 29(1): 19-22, January, 2002

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Irrespective of variety, the highest grain yield was obtained from dibbling method followed by line sowing (2.33-2.36 t ha^-1 and broadcasting (1.68- ) 1.71 t ha^-1 methods in both the years but there was no significant difference between dibbling and line sowing methods. The highest grain yield in dibbling methods might be due to the influence of higher panicle number. In case of variety, BR21 produced the highest grain yield (2.66-2.71 t ha^-1 followed by Binnatoa (1.60-1.98 t ha^-1) irrespective of sowing methods due to the higher number of filled grains and heavier 1000-grain weight.

Knowledge Management: Journal