Salicylic Acid Enhances the Activity of Some Insecticides Against Bollworms-Infested Cotton Plants

E., El-Sherbeni A.; Khaleid, M. S.; Ali, Ola S. M.; Abdallah, S. A.

doi:10.21608/eajbsf.2022.267447

Salicylic Acid Enhances the Activity of Some Insecticides Against Bollworms-Infested Cotton Plants

Document Type : Original Article

Authors

¹ Plant Protection Dept. The faculty of Agric., Tanta University.

² Central Agricultural Pesticides Laboratory, Agric. Research Center

10.21608/eajbsf.2022.267447

Abstract

Background: Cotton is one of the most important economic crops across the world and in Egypt. It was in the past, the first source of national income in Egypt. Cotton is affected by many pests, but the most economically harmful are cotton bollworms, which affect the yield at the fruiting stage. To reduce the economic cost of boll-worms controlling and reducing the environmental impact of insecticides using, A Field experiment was conducted, to study the effect of using and mixing salicylic acid (SA) with some recommended insecticides against boll-worms on cotton plants. Results: The most effective insecticide against Pink bollworms was profenfos (Prf). Salicylic acid had a slight effect on it. This effect increased with the increasing the SA conc. Adding SA to insecticides enhanced the effect of imidacloprid only. The most effective treatments were Prf+1mM SA. Concerning Spiny bollworm, all insecticide treatments and their combination with SA had highly effective against the pest, with no significant differences among them, SA treatments had a moderate effect against it. Regarding yield and the yield component, imidacloprid and cyhalothrin treatment had the highest No of open bolls/plants followed by profenfos treatment. Profenfos had increased the cotton bolls' weight, seed weight/boll, and yield/ hectare. Also, all insecticide treatments had increased the cotton yield/ hectare, and all treatments increased the crude oil percentage but there is no significant difference among them. Conclusions: Salicylic acid enhance the efficiency of selected insecticides against bollworms, and had a slight efficacy against these pests. The additions of SA enhanced the qualities of some productivity aspects but did not affect others. The total productivity (cotton yield/ hectare) has increased by 73.55: 85.67 %.

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