Toxicity of Insecticides against Tomato Leaf Miner, Tuta absoluta, and Its Predators and Determination of Their Residue Dissipation in Tomato Fruits
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JASTMO-25-5_025
تاریخ نمایه سازی: 18 آبان 1402
Abstract:
Tomatoes are an important vegetable crop in different parts of the world, where they are grown year-round. Currently, the most important problem facing tomato growers in the world is the devastating damage caused by the invasive tomato leaf miner, Tuta absoluta Meyrick (Gelechiidae: Lepidoptera). In this study, the efficacy of three bioinsecticides (Bacillus thuringiensis formulations, spinosad and emamectin benzoate, and two chemical insecticides (indoxacarb and chlorpyrifos) against T. absoluta and their adverse effects on predators were conducted in two different governorates in Egypt, based on recommended doses of the tested insecticides. In addition, the residue dissipation of the tested insecticides was determined in tomato fruits. Results indicated that emamectin benzoate was the most effective insecticide, exhibiting the highest reduction in T. absoluta density of ۷۸.۰۵ and ۸۷.۱۱% in Giza and Qualybia governorates, respectively, followed by indoxacarb (۷۷.۰۱%) in Giza and spinosad (۸۰.۴۴%) in Qualybia. In addition, our finding proved that the tested biopesticide formulations, especially Bt formulations, are environmentally friendly to two of the most important predators in tomato cultivation: Nesidiocoris tenuis and Macrolophus pygmaeus Reuter. Moreover, the analysis of insecticide residues on tomato fruits revealed that bioinsecticide residues dissipated faster than conventional insecticide (chlorpyrifos). The results of this research suggested that bioinsecticides could be used for the management of T. absoluta under field conditions.
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Authors
M. A. M. Moustafa
Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, ۱۲۶۱۳ Giza, Egypt.
D. E. El-Hefny
Department of Pesticide Residues and Environmental Pollution, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, Giza, Egypt.
R. N. Abdel-kerim
Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, ۱۲۶۱۳ Giza, Egypt.
M. A. Kandil
Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, ۱۲۶۱۳ Giza, Egypt.
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