Soil and foliar application of rock dust as natural control agent for two-spotted spider mites on tomato plants.

Scientific Reports
Nicoletta FaraoneNeil Kirk Hillier

Abstract

Mineral-based products represent a valid alternative to synthetic pesticides in integrated pest management. We investigated the effects of a novel granite dust product as an agent for controlling two-spotted spider mites, Tetranychus urticae Koch (Acari: Tetranychidae), on tomato plants (Solanum lycopersicum L.). Two-choice tests for repellency and repulsiveness, and no-choice bioassays with different type of applications (soil, foliar, and soil-foliar) were used in order to evaluate performance and action of the product. Evaluation of epidermal micromorphology and mesophyll structure of treated plants and elemental analyses of leaves were performed. In repulsiveness experiments, almost all dust treatments significantly inhibited mites from migrating to and/or settling on the treated leaf. In repellency experiments, foliar and soil dust treatments were not significantly different from control. Significant mortality was observed for all dust treatments in two-choice and in no-choice bioassays, suggesting mites are susceptible to rock dust by contact, and by indirect interaction through the feeding on plants subjected to soil application of rock dust. Leaf epidermal micromorphology and mesophyll structure of treated plants showed...Continue Reading

References

Mar 9, 2005·Journal of Experimental Botany·Namiki Mitani, Jian Feng Ma
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Sep 5, 2013·Proceedings of the National Academy of Sciences of the United States of America·Mao YeRensen Zeng
Aug 12, 2016·Frontiers in Plant Science·Nicolas BensoussanVojislava Grbić

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Citations

Mar 9, 2021·Frontiers in Plant Science·Flor E AcevedoGary W Felton

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