Upwind Report

Glyphosate use in Darke County, Ohio

Estimated farm glyphosate use in Darke County, Ohio was 331 pounds per square mile of county land in 2019, higher than 85% of US counties.

Map of Darke 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 land331lbTop 15% in the US
US
449th of 3,060
Ohio
14th of 88
Per square mile of cropland337lb

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

Since 2000

Up from 214 in 2000 to 331 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
2000214214
2001236236
2002270270
2003247247
2004303309
2005303303
2006258258
2007371371
2008472477
2009427427
2010337337
2011427427
2012466466
2013466471
2014511511
2015443443
2016499499
2017550550
2018432438
2019331331
See Darke 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 Darke 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.