Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

EFFECT OF DIFFERENT SOURCES OF WATER ON THE EFFICACY OF COMMONLY USED HERBICIDES IN TEA PLANTATION (Pages : 14 - 16)

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. Download