Brazil Approves 113 More Pesticide Post-Registration Changes, Voids Four Items From Earlier Act
15 September 2026, São Paulo: Brazil’s Ministry of Agriculture and Livestock published Ato No. 55 on September 10, 2026, authorizing 113 post-registration changes to already-approved pesticide products, just nine days after a separate act covering 199 similar decisions, and formally invalidating four items from that earlier act due to administrative corrections.
The act was issued by the Coordenação-Geral de Agrotóxicos e Afins, MAPA’s pesticide coordination unit, and published in the Diário Oficial da União, Brazil’s official federal gazette. It follows Ato No. 53, published September 1, 2026, which contained 199 post-registration decisions, and comes soon enough after it that four items from Ato 53, numbered 47, 48, 146 and 184, were declared without effect in the new act. The underlying reason for those four reversals was not stated in the published text.
Unlike new product registrations, which introduce a pesticide to the Brazilian market for the first time, these acts govern changes to products that are already registered and approved, and they are published far more frequently and with far less public attention. Based on the category breakdown MAPA published in Ato 53, and mirrored in Ato 55’s own categories, this type of act typically covers new manufacturer inclusions, new formulator authorizations, new importer authorizations, incorporation of new technical product sources, commercial brand changes, revised usage recommendations, additions of target pests or diseases, and dosage adjustments.
In Ato 53, the 199 decisions broke down as follows:
Category
Count
Share
Expansive changes (market-widening)
139
69.8%
Of which: new importer authorizations
53
–
Of which: new formulator additions
35
–
Of which: new technical product source inclusions
31
–
Of which: other manufacturer, handler, brand and usage expansions
MAPA has not published an equivalent numeric breakdown for Ato 55’s 113 items as of this writing, though the categories involved follow the same pattern. Active ingredients named across the two acts include glyphosate, 2,4-D, atrazine, chlorpyrifos, fipronil, dicamba, glufosinate, picloram, chlorantraniliprole, propiconazole, tebuconazole, chlorothalonil, diquat and lambda-cyhalothrin. Chinese manufacturers based in Shandong, Jiangsu, Zhejiang, Hebei and Anhui provinces, alongside Indian companies, feature prominently as the technical-grade suppliers behind many of the importer and formulator authorizations, and China was named explicitly in 22 of Ato 53’s 199 items, 18 of them expansive. One company, Agrofito, received multiple import authorizations in Ato 53, while Jiangsu Flag Chemical Industry Co. Ltd. appeared repeatedly as a listed formulator across both acts.
Brazilian regulatory commentary framed the pace and volume of these acts, two major batches totaling 312 decisions in a nine-day span, as evidence that most of the ongoing expansion of Brazil’s pesticide market now happens through this post-registration process rather than through headline-grabbing new product approvals, and that administrative corrections, such as the four invalidated items, are becoming a routine feature of that process rather than a rare exception.
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