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Effects of field applications of paraquat on densities of Panonychus ulmi (Koch) and Neoseiulus fallacis (Garman)



Effects of field applications of paraquat on densities of Panonychus ulmi (Koch) and Neoseiulus fallacis (Garman)



Journal of Agricultural Entomology 3(4): 322-325



Field trials were carried out in Virginia in 1984-85 to determine the effects of paraquat applications in apple orchards on Panonychus ulmi and its predator Neoseiulus fallacis In 1984, counts were made on 12 June and 10 August. No differences between treated and untreated areas were observed in June, but by August densities of active forms of P. ulmi were almost 4-fold greater on trees with paraquat-treated ground cover than in untreated areas, and densities of eggs were twice as great.

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Accession: 001580867

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