Formulation and Equipment Effects on Application of a Viral (Baculovirus heliothis) Insecticide

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Several formulations of the nuc1eopolyhedrosis virus (NPY) of Heliothis were evaluated against the bollworm, Heliothis zea (Boddie), by using 2 nozzle-pressure combinations. TX-4 nozzles operating at 373 kPa were more effective than TX-1 nozzles at 552 kPa for applying an aqueous suspension of NPY (without thickeners or sunlight protectants). A polyvinyl alcohol (PYA)-Shade® formulation of NPY was more effective against bollworm larvae than a mineral oil emulsion, PVA, or 2 aqueous suspensions of NPY. An aqueous suspension of NPY without a wetting agent (Triton® CS-7) was more efficient than a suspension with a wetting agent. NPY formulations containing PVA plus Shade or Keltose® plus Shade were equally effective in their initial activity against bollworm larvae and also in protecting deposits of NPV from sunlight. The addition of sucrose did not improve the effectiveness of the PVA-Shade formulation of NPV but did benefit the Keltose-Shade suspension of NPV.

Document Type: Research Article

Publication date: October 15, 1978

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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