EPA Challenges Farmers to Ditch Harvest Pesticides for $30 Million

Farmers have a familiar pre-harvest ritual: spray desiccants across their fields to dry out crops before combining. It speeds harvest, reduces weather risk, and has become standard practice for decades. The EPA now wants to blow that up.

On July 1, the agency announced a $30 million innovation challenge to find and fund practical, cost-effective alternatives to conventional chemical crop desiccation. The Federal Register notice opened a public comment period through September 30. It’s an acknowledgment of something farmers and soil scientists have known: the desiccant habit, while convenient, comes with costs that sit quietly in soil and water—and in the bodies of the people who apply them.

What Are Desiccants, and Why Do They Matter

Desiccants are pesticides—mostly glyphosate (Roundup) and paraquat—sprayed over ripening crops in the final weeks before harvest. The goal is simple: kill the plant, dry it fast, and make combine harvesting easier and more uniform. For farmers, the math seemed straightforward. Less rain damage, cleaner harvests, less time in the field.

But the toll has been building. Glyphosate residues turn up routinely in human urine samples, a sign of widespread exposure. Paraquat is linked to Parkinson’s disease in farmworkers, and while the EPA cancelled paraquat registrations, the chemical lingers in lawsuits and in environmental memory. Both chemicals persist in soil and groundwater. Both contaminate streams where they harm aquatic ecosystems. And both are applied at scale—desiccants account for a significant portion of glyphosate use on U.S. crops, particularly on wheat, oats, lentils, peas, and beans.

The EPA’s challenge is a tacit admission that the status quo is broken.

Who Pays the Real Cost

Desiccant use concentrates harm on farmworkers. Agricultural workers who handle desiccant-sprayed crops face direct respiratory and dermal exposure. The federal government has been slow to regulate the exposure risk. And as heat stress on farms intensifies due to climate change, combining high temperatures with chemical exposure creates compounding health risks.

For soil health, desiccants interrupt the soil microbiome and leave residues that persist for years. Regenerative and organic growers find that desiccant drift from neighboring fields contaminates their own land, limiting their ability to market premium products or build resilient soil ecosystems.

And economically, the desiccant industry is another lock-in: farmers depend on chemical suppliers, pay premiums for application timing, and become locked into the cycle of bought-and-sprayed agriculture. For debt-burdened farmers already squeezed by input costs and volatile commodity prices, any reduction in chemical expense is a survival calculation.

What Alternatives Look Like

The challenge is open to inventors, ag-tech companies, university researchers, and equipment manufacturers. The EPA is seeking practical solutions across several categories:

• Mechanical harvest aids: modified combine designs, air-blast or threshing technologies that dry crops without chemicals.
• Biological agents: microbes or fungi that can mimic desiccation without toxicity.
• Thermal or energy methods: heat, UV, or other non-chemical drying approaches scalable to field size.
• Crop genetics and breeding: varieties that mature and dry more uniformly, reducing the need for external drying.
• Agronomic timing and spacing: planting patterns or harvest schedules that leverage natural senescence and weather patterns.

The barrier is real: any alternative must work reliably, cost competitively, and integrate into existing farming operations. A solution that costs more than glyphosate or fails in wet years won’t get adopted, no matter how green it is.

But there’s also opportunity. University extension services are already running pilot projects on mechanical and biological desiccants. Seed companies are investing in varieties with better natural drying. And some organic and regenerative operations have abandoned chemical desiccation entirely, shifting harvest timing and crop selection to work with natural cycles. Those successes prove it’s possible—scaling is the next challenge.

The Bigger Picture

The $30 million challenge sits within a broader push to reduce pesticide dependence. The EPA has also launched initiatives on PFAS contamination in biosolids and food, and federal agencies are increasingly scrutinizing chemical concentrations in soil. What’s changing is the acknowledgment that the current system—spray-heavy, externality-rich, farmer-dependent—doesn’t work at scale.

For beginning farmers trying to enter agriculture on thin margins, a desiccant alternative could be transformative. One less chemical expense. One less health risk. One less dependency on agribusiness suppliers. And for farmworkers facing heat and pesticide exposure, any reduction in spray volume is a step toward dignity and safety.

The EPA’s challenge closes September 30. Interested innovators need to submit project plans and show a path to farm-scale pilots by 2027. The winners will split the $30 million, with funding for prototyping, testing, and early adoption support. It’s not a guarantee—many ag-tech projects fail. But it’s a signal that the desiccant era is ending, and a different harvest is possible.

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Cross-referenced:

• EPA Expands Carcinogenic Forever-Chemical Pesticide to Food Crops
• Why 72% of Beginning Farmers Can’t Farm Full Time
• Farm Debt Crisis Bankruptcies Hit 2026 Peak
• Farmworker Heat Protection: States Leading Where Federal Stalls