El-Sharkawy, R., Eskander, M., Abd- Allah, A. (2020). Study the Toxicity of Three Benzothiazole Compounds Formulated as 10 % Suspension Concentrate against Cotton Leafworm Spodoptera littoralis (Boisd). Journal of Plant Protection and Pathology, 11(2), 141-146. doi: 10.21608/jppp.2020.79998
R. A. El-Sharkawy; M. A. Eskander; Amal A. Abd- Allah. "Study the Toxicity of Three Benzothiazole Compounds Formulated as 10 % Suspension Concentrate against Cotton Leafworm Spodoptera littoralis (Boisd)". Journal of Plant Protection and Pathology, 11, 2, 2020, 141-146. doi: 10.21608/jppp.2020.79998
El-Sharkawy, R., Eskander, M., Abd- Allah, A. (2020). 'Study the Toxicity of Three Benzothiazole Compounds Formulated as 10 % Suspension Concentrate against Cotton Leafworm Spodoptera littoralis (Boisd)', Journal of Plant Protection and Pathology, 11(2), pp. 141-146. doi: 10.21608/jppp.2020.79998
El-Sharkawy, R., Eskander, M., Abd- Allah, A. Study the Toxicity of Three Benzothiazole Compounds Formulated as 10 % Suspension Concentrate against Cotton Leafworm Spodoptera littoralis (Boisd). Journal of Plant Protection and Pathology, 2020; 11(2): 141-146. doi: 10.21608/jppp.2020.79998
Study the Toxicity of Three Benzothiazole Compounds Formulated as 10 % Suspension Concentrate against Cotton Leafworm Spodoptera littoralis (Boisd)
1Pesticides Evaluation Research Department, Plant Protection Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
2Formulation Research Department, Central Agricultural Pesticides Lab. (CAPL), Agriculture Research Center (ARC), Dokki, Giza, Egypt
Abstract
Three compounds of benzothiazole were synthetized as active ingredient and prepared as 10 % suspensions concentrate (SC). They were evaluated against the second and fourth instar larvae of the cotton leafworm S. littoralis (Boisd.), under laboratory conditions. LC50 values showed that formulation (1) gave the highest toxic effect against 2nd and 4th instar larvae after 48 hrs from treatment and gave the best effect as antifeedant followed by formulation (3) and formulation (2). Semi field experiment was done to evaluate the initial and latent effects of the formulated compounds compared with commercial insecticide chlorpyrifos 48% EC (Dursban), the results showed that formulation (1) gave 100 % prevention of adult emergency due to the high initial and latent effects and lowest pupation percentage as the same as chlorpyrifos followed by formulation (3) and formulation (2) with the 2nd and the 4th instar larvae. Whereas Formulation (1) at 1 % is already as the same of recommended insecticide chlorpyrifos, therefore it could be recommended to use the new formulations as alternative of hazard conventional insecticides in controlling cotton leafworm in different crops after conducting the other necessary open field experiments.
View on SCiNiTO
Top