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Vertical Movement of Conidia of Nomuraea rileyi Through Sand and Loam Soils

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About 75% of the conidia of Nomuraea rileyi (Farlow) Samson layered on a 10.5 cm-column of sand were recovered in the filtrate after exposure to the equivalent of 16.25 cm of rain. In contrast, no conidia were recovered in filtrate from a silt-loam soil, and over 90% of the recovered conidia were in the upper 2 cm of the column. Conidia probably are held in the surface of loam soil by adsorption on clay or organic particles. Number of conidia was determined by use of a hemocytometer and phase microscopy; activity was determined by using a Trichoplusia ni (Hübner) bioassay.

Document Type: Research Article

Publication date: April 1, 1977

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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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