Upwind Report

Glyphosate use in Lafayette County, Wisconsin

Estimated farm glyphosate use in Lafayette County, Wisconsin was 314 pounds per square mile of county land in 2019, higher than 84% of US counties.

Map of Lafayette County, Wisconsin and nearby counties, coloring each county's cropland by estimated farm glyphosate use per square mile of county land in the 2019 high estimate. Darker colors mean more use.

2019 numbers

Per square mile of county land314lbTop 16% in the US
US
478th of 3,060
Wisconsin
4th of 72
Per square mile of cropland325lb

Ranks are by use per square mile of county land, on the 2019 high estimate, among US counties with a value. Counties with the same value share a rank.

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A picture of Lafayette County against the US county median, with the source, to post or send.

Since 2000

Up from 88 in 2000 to 314 in 2019. Pounds per square mile of county land, high estimate.

Every year's numbers
Glyphosate per square mile of county land by year, in pounds
YearLowHigh
20008888
2001105110
2002121121
2003144149
2004177177
2005160160
2006176176
2007171176
2008336336
2009221221
2010248248
2011276281
2012309309
2013342342
2014325325
2015276276
2016364364
2017237237
2018419419
2019314314
See Lafayette County on the map

About these numbers

The main number is the county's estimated farm glyphosate use for the year divided by all of its land, water left out. A county with a little farmland can use a lot per square mile of cropland and still have far less in total than a county with more farmland, so the whole-county number is the one the map colors, ranks and compares.

These are county estimates, not records. They don't show which fields were sprayed or how much any one field got.

USGS makes a low and a high estimate, which fill in use that farms didn't report in different ways.

Per square mile of cropland is the same total spread evenly over the county's cropland only, so it's higher than the whole-county number wherever only part of Lafayette County, Wisconsin is farmland.

Numbers are in pounds per square mile. The source gives kilograms per square kilometer, and 1 kg per km² is about 5.7 pounds per square mile.

Source: Hengl & Brungard from USGS county estimates, 2000–2019 (CC BY 4.0). Land area: US Census Bureau, 2020.

This page shows estimated farm use only. It says nothing about health and is not medical advice.