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Variation in Sensitivity of Mushroom Strains to Diazinon Compost Treatment

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Incorporating diazinon into the compost media in which mushrooms are grown is widely practiced to control three dipteran pests, namely, Lycoriella mali (Fitch) and L. multiseta (Felt) (Sciaridae) and Megaselia halterata (Wood) (Phoridae). However, there were indications at times that diazinon-treated compost had lower yields than untreated compost. To determine if the lowered yields were due to differences in sensitivity to diazinon of the different strains, eight commonly used strains were grown in treated and in untreated compost, and the yields were compared. Four strains had significantly lower weights when treated with diazinon, and three of these had significantly fewer mushrooms. The weight of the most sensitive strain was reduced by 30% and the number by 26%. The treatment also delayed the appearance of the growth flushes in sensitive strains. Poor cultural practices tended to result in increased phytotoxicity. There was no difference among the strains in the quantity of diazinon translocated from the compost to the fruiting bodies. The maximum recorded was 0.027 ppm, and most samples contained less than 0.01 ppm.

Document Type: Research Article

Publication date: February 1, 1982

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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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