Estimates of herbicide use for the twenty-first through the fortieth most-used herbicides in the conterminous United States
This coverage contains estimates of herbicide use for the twenty-first
through the fortieth most-used herbicides in the conterminous United States
as reported in Gianessi and Puffer (1991). Herbicide-use estimates in this
coverage are reported for each county polygon as acres treated, pounds of
active ingredient used, …