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Effect of Weed Control Methods on the Growth and Yield of Rainfed Aus Rice

M. Robiul Alam
On- Farm Research Division, Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Pabna, Bangladesh.

M. O. Hoque
On- Farm Research Division, Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Pabna, Bangladesh.

M. A. Rahman
Regional Agricultural Research Station, BARI, Pabna, Bangladesh.

F. Islam
On- Farm Research Division, Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Pabna, Bangladesh.

M. Akhtar Hossain
On- Farm Research Division, Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Pabna, Bangladesh.

M. S. H. Molla
On- Farm Research Division, Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Pabna, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted at Agricultural Research Station of Bangladesh Agricultural Research Institute (BARI), Pabna during April to August 2001 to see the effect of weed control methods on the growth and yield of rainfed aus rice (CV. BR16). Plant height, effective tillers plant^-1, length of panicle, filled grains panicle^-1, unfilled grains panicle^-1, 1000-grain weight and grain yield were significantly influenced due to different treatments. The maximum number of effective tillers plant^-1(3.60), filled grains panicle^-1 (50.54) and grain yield (3.02 t ha^-1) were obtained from T₅ treatment (Ronstar @ 2.0 L ha^-1), which was closely followed by T₂ treatment (two hand weeding). The minimum number of effective tillers plant^-1 ( 2.30), filled grains panicle^-1 (41.32) and grain yield (2.27 t ha^-1) were observed in control treatment.

Keywords: Weed control , Rainfed aus rice, Ronstar 25 EC,Hand weeding

Location: Agricultural Research station of Bangladesh Agricultural Research Institute (BARI), Pabna

Start Date: 00-04-2001

End Date: 00-08-2001

Program Area: Pest Management

Commodity: Rice

Objectives:

To find the effect of weed control methods on the growth and yield of rainfed aus rice
To determine a suitable method of weeding for successfully production of rainfed aus.

Methodology:

The experiment was conducted at the Agricultural Research station of Bangladesh Agricultural Research Institute (BARI), Pabna during April to August 2001. Seeds of Aus rice var-BR16 were used in the study. Seeds were sown on 20, April in line following 25 cm row spacing with continuous seeding. Six weed control methods viz. T₁ = control, T₂ = Two hand weeding, T₃ = Ronstar @ 1.0 L ha^-1, T₄ = Ronstar @ 1.5 L. ha^-1, T₅ = Ronstar @ 2.0 L ha^-1 and T₆ = Ronstar @ 2.5 L ha^-1 were included in the study. The experiment was laid out in the RCBD design. The unit plot size was 4 X 2.5 m². Fertilizers were applied at the rate of 126 kg urea, 75 kg TSP 40 kg MP, 60 kg gypsum and 10 kg ZnSO₄ hectare^-1. The entire amount of all fertilizer were applied during final land preparation. Treatment wise doses of Ronstar 25 EC (@1.0, 1.5, 2.0 and 2.5 L ha^-1) were applied five days after sowing. In control plots, weeds were allowed to grow up to harvesting. Two hand weeding were done at 15 and 35 days after sowing. Plant protection measures were taken as and when required. The rice was harvested on 23 August, 2001. The data on different growth and yield parameters of aus rice were recorded and statistically analyzed and the means were compared by DMRT method.

Source of Information: Asian Journal of Plant Sciences, 1(4): 298-299, 2002, ISSN 1682-3974

Article Link (Online Journal): DOI: 10.3923/ajps.2002.298.299, URL: http://scialert.net/abstract/?doi=ajps.2002.298.299

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that, to control of different weed species application of Ronstar @ 2.0 L ha^-1 was found superior for production of rainfed aus rice. Secondly two hand weeding was found equally good for obtaining desirable yield of aus rice.

Knowledge Management: Journal