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Effect of Different Sources of Water on the Efficacy of Commonly Used Herbicides in Tea Plantation

M.S. Islam
Scientific Officer
Plant pathology Division, Bangladesh Tea Research Institute

A.K. Saha
Scientific Officer
Soil chemistry Division, Bangladesh Tea Research Institute

H.Q.M. Mosaddeque
Scientific Officer
Pest Management Division, Bangladesh Jute Research Institute

M. M. Islam
Scientific Officer
Breeding Division, Bangladesh Jute Research Institute, Bangladesh

S.M.A. Haque
Scientific Officer
Pest Management Division, Bangladesh Jute Research Institute

Abstract/ Executive Summary:

An experiment was initiated at main farm of Bangladesh Tea Research Institute during May, 2006 with three commonly used herbicides in tea plantation. Pond, rain, stream and supplied tap water were used as treatment to determine the effect of different sources of water on herbicidal activities and to co-relate the herbicidal activities along with the properties of water. Calcium (Ca), Magnesium (Mg) and Iron (Fe) content and PH of each water sample were determined. Glyphosate, Paraquat and 2, 4 –D were diluted separately in each water sample @ 3.70 L/ ha in 750 L water, 2.80 L/ ha in 750 L water and 2.24 L/ ha in 750 L water respectively. The highest significant response of Glyphosate was observed in pond and rain water which were identical with paraquat. In case of 2, 4-D, highest significant performance was found in tap, stream and pond water while lowest was observed in rain water. Significantly difference of paraquat with other herbicides was noticed in tap water. Efficacy of Glyphosate, paraquat and 2, 4-D was found to be positive co-related with the increasing of Mg and Fe concentration, while significantly negative co-relation of paraquate was observed with the increase of Ca concentration

Keywords: Water, Herbicidal activities, Tea plantation

Location: Farm of Bangladesh Tea Research Institute

Start Date: 01-05-2006

End Date: 31-05-2006

Program Area: Pest Management

Commodity: Herbicide

Objectives:

To determine the effect of different sources of water on herbicidal activities and to co-relate the herbicidal activities along with the properties of water

Methodology:

Water from four different sources like T₁= pond, T₂= rain, T₃= stream and T₄= supplied tap water was collected. Ca, Mg and Fe content of each water sample were determined by acid method in ppm basis. PH of each sample was also assessed with the help of P^H meter. Herbicides like H₁= Glyphosate, H₂= Paraquat and H₃= 2, 4 –D were diluted separately in each water sample @ 3.70 L/ ha in 750 L water, 2.80 L/ ha in 750 L water and 2.24 L/ ha in 750 L water respectively. The spray solutions were sprayed with the help of CP 148 knapsack sprayer having flat nozzle. The experiment was laid out in a Randomized Block Design (RCBD) with having 6 replications of each. Data were recorded in terms of percent weed control at seven days interval. All recorded data were analyzed statistically and correlation coefficient was computed by using MSTAT program.

Source of Information: J.Soil.Nature. 2 (1):14-16, (2008)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The highest significant response of Glyphosate was observed in pond and rain water which were identical with paraquat. In case of 2, 4-D, highest significant performance was found in tap, stream and pond water while lowest was observed in rain water. Significantly difference of paraquat with other herbicides was noticed in tap water. Efficacy of Glyphosate, paraquat and 2, 4-D was found to be positive co-related with the increasing of Mg and Fe concentration, while significantly negative co-relation of paraquate was observed with the increase of Ca concentration.

Knowledge Management: Journal