Research
Leaching Behaviour of Bifenthrin And I-Cyhalothrin in Sandy Loam Soil
The purpose of this study was to determine the leaching behaviour of pyrethroids. Now days pyrethroids are applied largely in India, creating the need to evaluate potential leaching of pyrethroids. Thus leaching of bifenthrin and λ - cyhalothrin in sandy loam soil was evaluated under laboratory conditions with simulated rainfall of 300 mm. Bifenthrin was applied at 2 and 4 μg while λ -cyhalothrin was applied at 2 and 4 μg on soil columns, respectively. Maximum concentration of bifenthrin and λ -cyhalothrin was recovered from 0-5 cm depth in the soils. Results indicated the low mobility of both the insecticides under saturated moisture condition that may be significant in terms of ground water contamination Now a days pyrethroids .
Leaching of Bifenthrin in Two Different Types of Soil under Laboratory Condition
Leaching studies of bifenthrin in two different soils were carried out under laboratory conditions during October- November 2011.Commercial formulation of bifenthrin available as Talstar 10 % EC were applied at two treatment levels i.e. 25 and 50 μg as single and double dose, respectively. More than 90 per cent of bifenthrin were retained in 5 cm soil section in sandy loam and clay loam soil which shows the immobility of this pyrethroid insecticide in soil. No residues were detected in the leachate fractions of the insecticide.
