Early Season Galandromus (-Typhlodromus) Toxicity Trial, 1991 | Zendy

E. H. Beers | Zendy; R. W. Browne | Zendy

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Early Season Galandromus (-Typhlodromus) Toxicity Trial, 1991

Author(s) -

E. H. Beers,

R. W. Browne

Publication year - 1992

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/17.1.2

Subject(s) - orchard , randomized block design , population , horticulture , biology , toxicology , demography , sociology

The test was conducted in a commercial orchard in Orondo, Washington. The orchard had a well established WPM population at bloom. The experimental design was a randomized complete block with 3 treatments and 5 replications. Experimental units were single trees. Population samples were brushed leaf counts, 25 leaves per tree taken periodically through the growing season. Treatments were applied on 6 May. Applications were to the point of drip with a handgun at 300 psi. Tetranychid mites were present in the orchard but were found only occasionally and never at densities greater than 0.04 mites per leaf.

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