Table 1.

Estimated annual agricultural pesticide use in metric tons for Benton and Yakima counties following the methods described in Thelin and Stone (2013). U.S. Department of Agriculture countylevel data for harvested-crop acreage were used in conjunction with proprietary Crop Reporting District-level pesticide-use data to estimate county-level pesticide use. Estimated pesticide use (EPest) values were calculated with both the EPest-high and EPest-low methods.

Estimate (1,000 kg)
	2006			2005
	Benton	Yakima	Total	Benton	Yakima	Total
Azinphos-methyl	14.0	68.5	82.5	15.5	70.4	85.9
Malathion	0.5–1.2	1.0−1.2	1.5−2.4	1.5−1.6	3.3	4.8−4.9
Phosmet	0.7	5.4	6.2	5.9	33.3	39.4
Chlorpyrifos	11.9−12.3	49.3−49.5	61.2−61.8	13.8−14.6	52.4−52.6	66.2−67.2
Diazinon	0.7−1.7	2.1−2.2	2.8−3.9	0.4−0.5	0.8−0.9	1.2−1.4

Thelin, G.P., and Stone, W.W., 2013, Estimation of annual agricultural pesticide use for counties of the conterminous United States, 1992–2009: U.S. Geological Survey. Scientific Investigations Report 20135009, 54 p.