Reduction of Insecticide Activity by Carbon Residue Produced by Burning Grass Seed Fields After Harvest

Autor:	J. A. Kamm, M. L. Montgomery
Rok vydání:	1990
Předmět:	Fenvalerate Diazinon Ecology biology Fonofos food and beverages General Medicine Straw biology.organism_classification chemistry.chemical_compound Residue (chemistry) Agronomy chemistry Acheta Insect Science Chlorpyrifos Dimethoate
Zdroj:	Journal of Economic Entomology. 83:55-58
ISSN:	1938-291X 0022-0493
DOI:	10.1093/jee/83.1.55
Popis:	Annual burning of straw and stubble after harvest on commercial grass seed fields produces carbon residue that is incorporated into the surface layer of soil by winter rains. When intact cores of this layer were removed and treated with chlorpyrifos in the laboratory, the mortality of house crickets, Acheta domesticus (L.), caged on treated cores from fields burned three consecutive years was 95% and from fields burned 16 consecutive years was 15%. Chemical analysis of treated cores with and without carbon residue indicated similar amounts of chlorpyrifos. Reduced mortality is caused by the strong adsorption of the toxicant by carbon residue that resulted from field burning. Efficacy of diazinon, fonofos, dimethoate, and fenvalerate was also reduced significantly by the carbon residue. In grass seed fields, we suggest that mechanical methods of straw removal, either alone or in combination with alternate year burning, be used to eliminate or slow the rate of accumulation of carbon residue that interferes with activity of insecticides.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::99ccc99699ca975b5d94d0520d518e44 https://doi.org/10.1093/jee/83.1.55 Zobrazit plný text záznamu