Upwind Report

Glyphosate use in Humphreys County, Mississippi

Estimated farm glyphosate use in Humphreys County, Mississippi was 305 pounds per square mile of county land in 2019, higher than 83% of US counties.

Map of Humphreys County, Mississippi 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 land305lbTop 17% in the US
US
505th of 3,060
Mississippi
12th of 82
Per square mile of cropland343lb

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

Since 2000

Up from 274 in 2000 to 305 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
2000269274
2001284288
2002280284
2003382386
2004488483
2005562562
2006601605
2007545545
2008442442
2009345345
2010443443
2011640645
2012632632
2013653653
2014612612
2015398398
2016326326
2017295295
2018458458
2019305305
See Humphreys 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 Humphreys County, Mississippi 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.