Upwind Report

Glyphosate use in Prince George's County, Maryland

Estimated farm glyphosate use in Prince George's County, Maryland was 11 pounds per square mile of county land in 2019, lower than 66% of US counties.

Map of Prince George's 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 land11lb
US
2,035th of 3,060
Maryland
22nd of 23
Per square mile of cropland29lb

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 Prince George's County against the US county median, with the source, to post or send.

Since 2000

Up from 6.9 in 2000 to 11 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
20004.66.9
20014448
20021623
20033737
20043941
20056.912
20061821
20071214
20089.29.2
20094545
20102121
20111212
20121919
20131111
20141414
20159.111
20161414
20179.19.1
20181414
20191111
See Prince George's 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 Prince George's 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.