Study of the duration of fading and residues of two pesticides Ortus 5% SC (Fenpyroximate)and Vertimec 1.8% EC (Abamectin) on two strawberry cultivars

Abstract

It was found from a study of the duration of the fading of Vertimec on strawberry Mergent and Petaluma cultivars in plastic house conditions when it was used as a spray on the plant at a concentration of 0.5 ml / L, which is recommended for controlling the two-spotted mite Tetranychus urticae. It reached the allowable limit on the seventh day after the treatment, as it reached 0.1 mg/kg-1 in the Mergent variety and 0.1 mg/kg-1 in the Petaloma variety, as well as the Ortus pesticide when used as a spray on plants at a concentration of 0.5 ml/L, which is recommended. using it to combat the pest itself It reached the permissible limit on the seventh day, when its concentration was 0.3 mg/kg-1 in Mergent variety and 0.3 mg/kg-1 in Petaloma variety. Accordingly, the pre-harvest period when using these two pesticides at the recommended concentrations for each of them is seven days