Upwind Report

Glyphosate use in St. James Parish, Louisiana

Estimated farm glyphosate use in St. James Parish, Louisiana was 254 pounds per square mile of county land in 2019, higher than 79% of US counties.

Map of St. James Parish, Louisiana 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 land254lbTop 21% in the US
US
634th of 3,060
Louisiana
11th of 64
Per square mile of cropland679lb

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 St. James Parish against the US county median, with the source, to post or send.

Since 2000

Up from 96 in 2000 to 254 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
20009696
20015555
20024444
20034470
20047474
20056161
20069292
2007144144
20089191
2009148148
2010383383
2011264264
2012228228
2013152152
2014121121
2015158158
2016105105
20179595
20188282
2019254254
See St. James Parish 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 St. James Parish, Louisiana 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.