Upwind Report

Glyphosate use in Iberville Parish, Louisiana

Estimated farm glyphosate use in Iberville Parish, Louisiana was 132 pounds per square mile of county land in 2019, higher than 65% of US counties.

Map of Iberville 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 land132lbTop 35% in the US
US
1,055th of 3,060
Louisiana
21st of 64
Per square mile of cropland480lb

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

Since 2000

Up from 55 in 2000 to 132 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
20005555
20012727
20023739
2003171176
2004185187
20057982
20068690
20073737
2008104104
2009181181
20108888
2011100100
20125656
2013159159
20149696
20159191
2016114116
20178282
20188787
2019132132
See Iberville 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 Iberville 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.