4-CPA

Get the latest 4-CPA news, regulatory updates and developments covering 4-chlorophenoxyacetic acid, a synthetic auxin-type plant growth regulator used in agriculture and horticulture. This tag brings together developments concerning crop applications, pesticide registrations, regulatory reviews, research and plant-growth management.

Coverage includes fruit set, fruit retention, plant growth regulation, mung bean sprout production and pesticide regulation, along with research into its physiological effects and agricultural applications. Historically, the compound has been used for tomato fruit-set applications and for restricting root development during mung bean germination. Its regulatory status and permitted uses vary between markets.

Find news on 4-CPA registrations, regulatory decisions, product formulations, crop applications, research and safety assessments. Recent developments include the US EPA’s September 2026 completion of its registration review, with the agency making its final decision available through the federal pesticide-review process. Coverage also tracks international regulatory developments and research into auxin-based plant growth regulators.