Dips for Control of Black Vine Weevil Larvae in Pots, Ohio 1977 | Zendy

Margaret E. Montgomery | Zendy; D. G. Nielsen | Zendy

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Dips for Control of Black Vine Weevil Larvae in Pots, Ohio 1977

Author(s) -

Margaret E. Montgomery,

D. G. Nielsen

Publication year - 1978

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/3.1.161

Subject(s) - instar , loam , larva , vine , wilting , horticulture , greenhouse , permanent wilting point , inoculation , moisture , biology , weevil , agronomy , environmental science , zoology , soil water , botany , chemistry , field capacity , ecology , irrigation , organic chemistry

Three-year-old yews in 7-inch pots containing 4 qt of sandy-silt loam were inoculated with 50-75 lst-instar larvae during February. Infested plants were maintained in the greenhouse until larvae were 4th and 5th instar. Pots were then moved outdoors and soil moisture allowed to approach wilting point, although soil moisture was not monitored. On April 30, pots were immersed in insecticide solutions until bubbling ceased, approx 3 min. Each pot absorbed ca. 1 qt of solution. Treatments were replicated 6 times. Soil temperature was 25°C. Soil was emptied from the pots and numbers of larvae determined 17 days post-treatment.

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