Upwind Report

Glyphosate use in Martin County, Florida

Estimated farm glyphosate use in Martin County, Florida was 80 to 83 pounds per square mile of county land in 2019, higher than 57% of US counties.

Map of Martin County, Florida 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 land80 to 83lbTop 43% in the US
US
1,309th of 3,060
Florida
8th of 66
Per square mile of cropland131 to 137lb

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

Down from 489 in 2000 to 83 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
2000485489
2001375375
2002361361
2003410410
2004454454
2005391391
2006451451
2007363363
2008313313
2009279279
2010265265
2011247251
2012212212
2013239239
2014168172
2015182182
2016206206
2017129129
20189191
20198083
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, Florida 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.