California Growers Sought Approval for New Insecticide

Coastal farmers face mounting crop losses as they push for the state to authorize the pesticide isocycloseram.

Updated on Sept. 30, 2026 in Organic Food

Screen-print poster illustration of rows of green crops in a valley, with distant foothills under a hazy morning sky. — California vegetable farmers have petitioned state regulators to approve isocycloseram as they combat persistent crop infestations threatening the coastal produce industry. AI Illustration. Upload story photo >

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Should regulators expedite approval of new pesticides to ensure the stability of domestic food production?

Coastal vegetable growers have requested California state approval for the insecticide isocycloseram to combat persistent pest infestations. The push follows significant production losses and job cuts caused by the pepper weevil.

Why it matters

Growers are seeking the chemical to neutralize pests that have developed resistance to existing treatments. Conversely, environmental groups oppose the authorization, citing concerns that the product is a forever chemical that threatens pollinators and wildlife.

Prime Time International abandoned 250 acres of bell peppers after the pepper weevil caused $4 million in production losses. The infestation also resulted in the loss of 150 jobs for the grower.

The players

Prime Time International

This is a large-scale agricultural producer that farms 1,300 acres of bell peppers.

California Department of Pesticide Regulation

This state agency is responsible for evaluating and registering pesticides for use within California.

US Environmental Protection Agency

This federal agency regulates the use of pesticides and registered isocycloseram for national use in 2025.

The details

The California Department of Pesticide Regulation is evaluating the product, which is already legal for use in Arizona and Mexico. While growers emphasize the need for new control methods, environmental advocates have launched a lawsuit to challenge the federal registration of the chemical.

Fall 2025: The US Environmental Protection Agency registered isocycloseram.
Summer 2026: Diamondback moth caused significant crop damage.
September 30, 2026: Official article publication date.
November 2026: Pepper harvest is scheduled to shift to the Coachella Valley.

Roadmap

The push for new pesticides reflects an ongoing struggle in the agricultural industry to combat pests that are becoming increasingly resistant to traditional chemical, cultural, and biological control methods. This case illustrates the broader tension between maintaining high-yield food production and managing the potential environmental impact of modern crop protection technologies.

The ongoing pest crisis and resulting yield losses may lead to fluctuations in the availability and pricing of bell peppers for California shoppers. Residents in affected areas may also see shifts in local employment as large agricultural firms adjust their farming operations to mitigate infestation damage.

The takeaway

Agricultural producers are navigating an increasingly complex environment where pest resistance threatens profitability and long-term crop viability. Consumers should expect that the debate over chemical regulations will continue to influence farming methods and food supply stability.

What happens next

The California Department of Pesticide Regulation must complete a 30-day public comment period before a final decision on the insecticide can be made.