Upwind Report

Glyphosate use in Dorchester County, Maryland

Estimated farm glyphosate use in Dorchester County, Maryland was 20 pounds per square mile of county land in 2019, lower than 60% of US counties.

Map of Dorchester County, Maryland 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 land20lb
US
1,837th of 3,060
Maryland
17th of 23
Per square mile of cropland46lb

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

Since 2000

Down from 179 in 2000 to 20 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
2000174179
2001128134
2002128128
20035055
20046873
20055858
20068888
20078888
2008258258
20097.67.6
20108888
20116060
20124343
20134545
2014215215
2015180180
20165555
20173232
2018157157
20192020
See Dorchester 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 Dorchester County, Maryland 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.