Upwind Report

Glyphosate use in Martin County, Texas

Estimated farm glyphosate use in Martin County, Texas was 457 to 460 pounds per square mile of county land in 2019, higher than 93% of US counties.

Map of Martin County, Texas 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 land457 to 460lbTop 7% in the US
US
196th of 3,060
Texas
10th of 254
Per square mile of cropland908 to 914lb

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

Since 2000

Up from 25 in 2000 to 460 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
20002225
20012222
20025858
2003116118
2004121121
2005198198
20068385
2007171171
20083333
2009296296
2010376378
20117070
2012185185
20137477
2014388388
2015361361
2016316316
2017405408
2018247247
2019457460
See Martin 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 Martin County, Texas 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.