Evaluation of Botanicals for Management of Piercing-Sucking Pests and the Effect on Beneficial Arthropod Populations in Tea Trees Camellia sinensis (L.) O. Kuntze (Theaceae)

Journal of Insect Science
Yueyue TianZhengqun Zhang

Abstract

The tea green leafhopper Empoasca onukii Matsuda (Hemiptera: Cicadellidae), the orange spiny whitefly, Aleurocanthus spiniferus (Quaintanca) (Hemiptera: Aleyrodidae), and the green plant bugs Apolygus lucorum Meyer-Dür (Hemiptera: Miridae) are the important piercing-sucking herbivores in tea trees Camellia sinensis (L.) O. Kuntze (Theaceae). The goal of this study was to evaluate the laboratory toxicities and field control efficacies of botanical insecticides including matrine, azadirachtin, veratrine, and pyrethrin to three tea pests. Via leaf-dip bioassay, toxicity tests with botanical insecticides indicated that there were significant differences between the LC50 values for botanical insecticides within the same insect species. Matrine had the highest toxicity to E. onukii, A. spiniferus, and A. lucorum with the LC50 values of 2.35, 13.10, and 44.88 mg/liter, respectively. Field tests showed that, among four botanical insecticides, matrine at dose of 9 g a.i. ha-1 can significantly reduce the numbers of E. onukii and A. spiniferus and the infestation of A. lucorum on the tea plants. Furthermore, botanical insecticides matrine and azadirachtin had no obvious influence on the coccinellids, spiders, and parasitoids densities in...Continue Reading

References

Sep 4, 2007·Ecotoxicology and Environmental Safety·Sengottayan Senthil NathanJae Duk Kim
Jun 21, 2008·Pest Management Science·Lijun LiuYoshihisa Ozoe
Mar 5, 2010·Pest Management Science·Jean P JansenAnne M Warnier
Dec 18, 2013·Trends in Plant Science·Murray B Isman, Michael L Grieneisen
Oct 17, 2015·Annual Review of Entomology·R N C GuedesN Desneux
Nov 29, 2016·Nature·Simon G PottsAdam J Vanbergen

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