Upwind Report

Glyphosate use in Mercer County, Ohio

Estimated farm glyphosate use in Mercer County, Ohio was 302 to 308 pounds per square mile of county land in 2019, higher than 83% of US counties.

Map of Mercer County, Ohio 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 land302 to 308lbTop 17% in the US
US
498th of 3,060
Ohio
16th of 88
Per square mile of cropland314 to 320lb

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 Mercer County against the US county median, with the source, to post or send.

Since 2000

Up from 209 in 2000 to 308 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
2000204209
2001220226
2002242242
2003215215
2004281286
2005292292
2006248248
2007369369
2008462468
2009413413
2010314319
2011407413
2012451451
2013440440
2014473473
2015412412
2016467472
2017522527
2018407407
2019302308
See Mercer 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 Mercer County, Ohio 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.