This analysis provided a detailed breakdown of glyphosate usage patterns across the United States, documenting a 12-fold increase from approximately 25 million pounds in 1992 to over 300 million pounds by 2016, driven almost entirely by GMO crop adoption.
The data also documented pre-harvest desiccation — spraying glyphosate on non-GMO crops like wheat, oats, and legumes to dry them before harvest — which extends contamination beyond GMO crops. Geographic mapping showed concentration in Midwest and Great Plains agricultural states.
Residential and municipal use of glyphosate products for lawn care and weed control contributes to exposure even in non-agricultural areas.
Key Findings
- •U.S. glyphosate use increased from 25 million pounds annually in 1992 to over 300 million pounds by 2016.
- •Roundup Ready GMO crop adoption drove a 12-fold increase in application.
- •Pre-harvest desiccation extends glyphosate contamination to non-GMO wheat, oats, barley, and legumes.
- •Midwest and Great Plains states are geographic hotspots for glyphosate application.
- •Residential and municipal use contributes additional exposure through lawn care and public spaces.
Methodology
Analysis of publicly available USDA National Agricultural Statistics Service pesticide use survey data, EPA registration data, and industry market reports. Geographic mapping used county-level application data. Temporal trends were analyzed from 1992 through 2016.
Why This Matters for Families
The sheer volume — 300 million pounds per year in the U.S. — means glyphosate is pervasive in the food supply. Pre-harvest desiccation means even non-GMO wheat and oat products are likely contaminated unless certified organic.
Original Source
/data