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ARS Home » Research » Publications at this Location » Publication #89302
Title: EFFICACY OF GROUND-BASED APPLICATIONS OF GYPCHEK AND AN IN-VITRO PRODUCED NPV

Author
item Thorpe, Kevin
item PODGWAITE, JOHN - USDA FOREST SERVICE
item Webb, Ralph
item SLAVICEK, JAMES - USDA FOREST SERVICE

Submitted to: United States Department of Agricultural Interagency Gypsy Moth Research Forum
Publication Type: Abstract Only
Publication Acceptance Date: 3/1/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: In 1997, a reduced concentration of Gypchek at 5 X 10(9) PIB per gallon of formulation was as effective as 2-fold higher doses in reducing larval populations and protecting foliage. However, the in-vitro produced 122bla formulated at 10(9) PIB gallon was significantly less effective in reducing larval populations than the same concentration of Gypchek. Subsequent studies have revealed that 122bla PIBs are significantly smaller than Gypchek PIBs and contain fewer virions. That may account for the differences in results seen in this study. Further studies will be necessary to establish dose and formulation parameters for the in-vitro produced 122bla.