Environmental Monitoring of Carbaryl Applied in Urban Areas to Control the Glassy-winged Sharpshooter in California
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Carbaryl insecticide was applied by ground spray to plants in urban areas to control a serious insect pest the glassy-winged sharpshooter, Homalodisca coagulata (Say), newly introduced inCalifornia. To assure there are no adverse impacts to human health and the environment from the carbaryl applications, carbaryl was monitored in tank mixtures, air, surface water, foliage and backyard fruits and vegetables.Results from the five urban areas – Porterville, Fresno, Rancho Cordova, Brentwood and Chico – showed there were no significanthuman exposures or impacts on the environment. Spray tank concentrations ranged from 0.1–0.32%. Carbaryl concentrationsin air ranged from none detected to 1.12 μg m-3, well below the interim health screening level in air of 51.7 μg m-3. There were three detections of carbaryl in surface water nearapplication sites: 0.125 ppb (parts per billion) from a water treatment basin; 6.94 ppb from a gold fish pond; and 1737 ppbin a rain runoff sample collected from a drain adjacent to a sprayed site. The foliar dislodgeable residues ranged from 1.54–7.12 μg cm-2, comparable to levels reported forsafe reentry of 2.4 to 5.6 μg cm-2 for citrus. Carbarylconcentrations in fruits and vegetables ranged from no detectableamounts to 7.56 ppm, which were below the U.S.EPA tolerance, allowable residue of 10 ppm.
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- California Department of Health Services: 2000, <http://www.dhs.ca.gov/ps/ddwem/chemicals/MCL/actionlevels.htm>Google Scholar
- Iwata, Y., Dusch, M., Carman, G. and Gunther F.: 1979, 'Worker environmental research: Residues form carbaryl, chlorobenzilate, dimethoate, and trichlorfon applied to citrus trees', J. Agric. Food Chem. 27, 1141-1145.Google Scholar
- Kidd, H. and James D. R.: 1987, The Agrochemicals Handbook, 2nd ed., Royal Society of Chemistry Information Services, Cambridge, U.K.Google Scholar
- Neher, L. A., Segawa R. T. and Oshima R. J.: 1982, 'Monitoring of the 1982 Gypsy Moth Eradication ground spray program in Santa Barbara County', Technical Report EH 82-02, Department of Pesticide Regulation, Sacramento, California.Google Scholar
- Rhone-Poulenc Ag. Company: 1988, Data Sheet for Carbaryl, DPR# 169-177, Department of Pesticide Regulation, Sacramento, California.Google Scholar
- Sanborn, J. R.: 2000, Limit of Quantitation (LOQ) for Carbaryl Air Monitoring during Sharpshooter Control, Department of Pesticide Regulation, Sacramento, California.Google Scholar
- Segawa, R. T.: 1988, 'Monitoring the Pesticide Treatments of the Japanese Beetle Project, Sacramento County, California, 1983-1986. Vol. I: Carbaryl', Technical Report EH 88-13, Department of Pesticide Regulation, Sacramento, California.Google Scholar
- University of California: 2000, Report of the University of California Pierce's Disease Research and Emergency Response Task Force, University of California, Office of the President.Google Scholar
- UC Davis: 2000, Weather Data, www.ipm.ucdavis.edu/WEATHER/wxretrieve.html <http://www.ipm.ucdavis.edu/WEATHER/wxretrieve.html>Google Scholar
- U.S. EPA: 1999, Carbaryl Tolerances for Residues, Code of Federal Regulations, Protection of Environment, Title 40, Section 180-169.Google Scholar
- Weaver, D. J., Zalkin, J. F., Segawa, R. T., Sava, R., Wilkerson, M. R., Franz, J. R., Duncan, D. and Simpson, S.: 1983, 'Monitoring of the 1983 Gypsy Moth Eradication Ground Spray Program in Six California Counties', Technical Report EH 83-03, Department of Pesticide Regulation, Sacramento, California.Google Scholar