Persistence of Deltamethrin on Apple, Grapes, Cucumber and Tomato in Syrian Environment

This study investigated the Persistence of Deltamethrin on Apple, Grape, Tomato and Cucumber. as follows:The grape and apple trees were sprayed with Deltamethrin at rate 250 Cm3/ha, while Cucumber and tomato were sprayed with Deltamethrin at rate 150 cm3/ha. The half-life of Deltamethrin was 5.36, 5.78, 2.32, 2.11 days on grape, apple, tomato and cucumber respectively. The calculated safety periods of Deltamethrin were 7, 4, 0, 3 days for grape, apple, cucumber and tomato respectively. Although the pesticide container label, states that crops can be consumed immediately after spraying.