Comparative of different formulations for some compounds (Neonicotinoids)‎ against the aphid Aphis gossypii (Hemiptera : Aphididae)‎ on zucchini and cucumber plants

Abstract EN

The aphid Aphis gossypii Glover (Hemiptera: Aphididae) is a polyphagous aphid found on more than 900 plant species.

It is distributed throughout the world but prefers the warmer regions.

It has been a pest in different locations in Egypt, particularly affecting vegetables.

The present work was conducted in two field experiments in Etay-El-Baroud, Agricultural Research Station, Beheira Governorate, during 2019 and 2020 seasons to evaluate the efficiency of some different formulations of neonicotinoid insecticides against the aphid A.gossypii on zucchini and cucumber plants.

The results showed that a decrease in the number of aphids in all treatments, insecticides that caused a significant decrease compared to the control.

General mean of % reduction aphid number were 91.75, 90.79 and 88.10%, for imidacloprid, acetamiprid and thiamethoxam, respectively, at 2019, while were 91.94, 90.65 and 88.97%, respectively, at 2020 season on zucchini fields.

On cucumber field general mean of % reduction was 91.94, 90.65 and 88.97%, for imidacloprid, acetamiprid and thiamethoxam, respectively, at 2019, while were 91.03, 92.71 and 92.36%, respectively, at 2020 season.

The results confirmed the presence of small significant differences between the formulations of imidacloprid, acetamiprid and thiamethoxam, and while all formulations indicated a significant decrease in the number of aphids in zucchini and cucumber plants compared to control during the two seasons.