Blankophor BBH as an Enhancer of Nuclear Polyhedrosis Virus in Arborist Treatments Against the Gypsy Moth (Lepidoptera: Lymantriidae)

Authors: WEBB, H. E.; DILL, N. H.; MCLAUGHLIN, J. M.; KERSHAW, L. S.; PODGWAITE, J. D.; COOK, S. P.; THORPE, K. W.; FARRAR, JR., R. R.; RIDGWAY, R. L.; FUESTER, R. W.; SHAPIRO, M.; ARGAUER, R. J.; VENABLES, L.; WHITE, G. B.

Source: Journal of Economic Entomology, Volume 89, Number 4, August 1996 , pp. 957-962(6)

Publisher: Entomological Society of America

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Abstract:

Doses of a commercial candidate formulation of gypsy moth nuclear polyhedrosis virus (LdMNPV) were applied with and without several concentrations of an enhancing adjuvant, B1ankophor BBH., to individual trees against natural gypsy moth, Lymantria dispar (L.), populations. Amounts of Blankophor BBH adhering to foliage after application were measured at 1,322, 227, and 37 µg/g dry weight of leaf for the 0.5,0.1, and 0.02% treatments, respectively. The highest dose of the candidate formulation used without the adjuvant failed to increase significantly 1st-generation after-treatment LdMNPV mortality (direct infection caused by feeding on applied virus) above background levels, to reduce late season (instars 5 and 6) larval populations in treated trees or to provide significant foliage protection. However, Blankophor BBH added to the tank mix at concentrations of 0.5 or 0.1% (wt: vol) resulted in significantly increased levels of 1st-generation after-treatment LdMNPV, significantly reduced late-season larval populations, and significant levels of foliage protection, compared with untreated control trees. The resulting recommended tank mix (0.1% Blankophor BBH and 2X 1010 PIBs per 75 liters final spray solution per tree) should give excellent foliage protection against gypsy moth at a cost of about $3 per tree.

Document Type: Research Article

Publication date: August 1, 1996

More about this publication?
  • 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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