Environmental Test Items in Active Ingredient Registration: Summary of Environmental Fate Studies

Release Date:

2019-03-19

Under the new policy, Announcement No. 2569 on Requirements for Pesticide Registration Data has introduced revised provisions for environmental fate studies, making the registration process more aligned with real-world conditions. Today, we will summarize the environmental fate testing requirements for active‑ingredient registration. I. Differences Between Old and New Environmental Fate Tests Compared with the previous regulations, the new policy mandates nine environmental fate tests: eight have been reduced by three (volatility test, soil degradation test, and the combined leaching and adsorption test), while four new tests have been added (soil aerobic metabolism, soil anaerobic metabolism, analytical methods for water, and analytical methods for soil). The specifics are as follows: 1. The volatility test has been eliminated. 2. Adsorption and leaching tests…

Under the new policy, “ Pesticide Requirements for Registration Data: Announcement No. 2569 has introduced new provisions for environmental fate studies, making the registration process more practical. Today, we will summarize the environmental fate testing requirements for active‑ingredient registration.

I. Differences Between Old-Environment and New-Environment Return-to-Home Experiments

Compared with the old return, The new policy mandates environmental fate testing (9 items): 8 are reduced by 3 (volatilization test, soil degradation test, and the combined leaching–adsorption test), while 4 are added (soil aerobic metabolism, soil anaerobic metabolism, aquatic analytical methods, and soil analytical methods). , as follows:

1. The volatility test has been canceled.

2. The adsorption and leaching tests are combined, while the requirements for metabolite testing are added and one additional soil type is included.

3. For hydrolysis and photolysis in water tests, the requirements regarding metabolic pathways and major metabolites have been removed.

Original requirement: Clarify Pesticide Hydrolytic stability in three pH‑buffered solutions, as well as the degradation pathways of the parent compound in water and the degradability of the parent compound and its major metabolites.

4. The soil degradation test is divided into aerobic and anaerobic metabolism tests, with no changes required.

Original requirement: Clarify Pesticide The degradation pathways of the parent compound under both aerobic and anaerobic conditions, as well as the degradability of the parent compound and its major metabolites.

5. Increase in water and soil Pesticide Analytical method.

Used for Pesticide Post‑registration monitoring (including metabolites). 3.3.2.6.2 B Residue analysis methods include the determination of residues in crops, soil, and water. Pesticide Analytical methods for the parent compound and its major and toxic metabolites.

6. Further clarify the technical requirements.

II. Definition of Environmental Attribution Experiments

III. Agriculture medicine Classification of Certified Environmental Testing Organizations (Environmental Fate)

Under the new policy, Pesticide Whether registering the active ingredient or the formulated product, numerous changes have been introduced to the requirements. If these changes are overlooked, Pesticide The likelihood of the registration being rejected is very high.

Source: AgroPages World Agrochemical Network Author: AgroPages Editor: xwbj3

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