Upwind Report

Glyphosate use in Taylor County, Iowa

Estimated farm glyphosate use in Taylor County, Iowa was 295 to 300 pounds per square mile of county land in 2019, higher than 83% of US counties.

Map of Taylor County, Iowa 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 land295 to 300lbTop 17% in the US
US
514th of 3,060
Iowa
77th of 99
Per square mile of cropland303 to 308lb

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

Since 2000

Up from 61 in 2000 to 300 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
20006161
2001106111
20028383
2003128128
2004117122
2005133133
2006150156
2007178184
2008184189
2009223228
2010256256
2011311311
2012334334
2013401406
2014412412
2015401406
2016334334
2017273278
2018323323
2019295300
See Taylor 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 Taylor County, Iowa 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.