Evaluation of different insecticides

A simple and inexpensive method was developed using liquid - liquid extraction, together with high performance chromatographic method for determination of methoxyfenozide residues in grapes. The evaluated parameters include the extracts by distilled water and acetonitrile solvents. The method was validated using grapes samples spiked with methoxyfenozide at different fortification levels (0.05, 0.1 and 0.5 µg/g). Average recoveries (using each concentration three replicates) ranged 86-95 %, with relative standard deviations less than 5%, calibration solutions concentration in the range 0.

8p chauchaungayxua6 26-06-2020 11 2   Download

Among 25 insecticides and biorationals evaluated with and without Fish Oil Rosin Soap (5 ml/l) against different instars of scale insect, Hemilecanium imbricans, the insecticides viz., buprofezin 25 SC @ 1.25 ml/l, chlorpyriphos 20 EC @ 2 ml/l, acephate 75 SP @ 1 g/l, lambda-cyhalothrin 5 EC @ 0.5 ml/l, profenophos 50 EC @ 2 ml/l and dichlorvos 76 EC @ 1 ml/l were recorded highest per cent mortality of scales under laboratory conditions.

16p nguaconbaynhay5 16-05-2020 11 1   Download