Suzano applies agrochemicals to address issues that hinder eucalyptus production, including pests (insects and mites), diseases (caused by microorganisms and stress), and weeds (which compete for space, water, light, and nutrients).

For each biological target, we perform what we call integrated management, aiming to understand the target to control and to develop tools for detecting and monitoring populations, including assessing the incidence and severity of each infestation.

Based on this monitoring, we manage the target through biological, genetic, physical, cultural, or chemical methods, with a focus on biological and genetic controls whenever feasible. Recommendations for agrochemical use are provided by a specialized team, ensuring adherence to national, international, and certification standards. Operational teams implement the agrochemical applications and record data related to their usage, which is then reviewed annually by external auditors.

We adhere strictly to the Forest Stewardship Council® (FSC®) Pesticide Policy¹ and PEFC/Cerflor's (Brazilian Forest Certification Program) pesticide guidelines, which specify rules for agrochemical use. Additionally, we follow all relevant Brazilian laws governing the registration and use of agrochemicals, involving agencies such as the Ministry of Agriculture and Livestock (MAPA), the National Health Surveillance Agency (ANVISA - Ministry of Health), and the Brazilian Institute for the Environment and Renewable Natural Resources (IBAMA - Ministry of the Environment).

We are involved in other initiatives that focus on the responsible use of agrochemicals, including:

• Forest Protection Research Program (Protef): linked to the Forest Research Institute (Ipef), it focuses on sustainable management of pests, diseases, and weeds;
• Forestry Defense Committee of the Brazilian Tree Industry (Ibá): a group of companies in the forestry sector that discuss issues and align their technical positioning strategies regarding MAPA's chemicals policy, creating a forum for discussion and progress on this issue;
• Research projects: collaborations with various renowned universities and research institutes in Brazil and abroad, focusing on the integrated management of pests, diseases, and weeds [e.g.: Universidade Federal de Viçosa (UFV), Universidade Estadual Paulista (Unesp), Universidade Federal de Lavras (UFLA), Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo (Esalq/USP), Universidade Federal da Grande Dourados (UFGD), Universidade Federal do Espírito Santo (UFES), Universidade Federal de Goiás (UFG), Universidade Federal de Alagoas (UFAL), Universidade Federal dos Veados do Nordeste e Mucuri Valleys (UFVJM), and Clonar—linked to the UFV business incubator].

We are dedicated to ensuring our recommendations regarding agrochemicals are based on solid technical grounds. Therefore, every product used must be listed in a technical list reviewed and maintained by a qualified expert. This list includes all agrochemicals approved for use at Suzano, following our established policies. When the list is updated in the system, a notification is sent to the responsible person in charge of procurement.

Whenever possible, we aim to enhance the use of biological pest control methods and genetic control by choosing eucalyptus clones with some resistance to pests and diseases. Considering that environmental factors like temperature, humidity, and fires can either support or hinder biological control, we assess the most suitable control method for each field's situation and target.

As a result of these efforts, from January to September 2025, we produced 332.3 million biocontrollers, covering 420,000 hectares. Regarding genetic control, during the same period, we assessed resistance to diseases and pests in potential new clones and seedlings from various progenies.

In 2025, we maintained our investments in people and infrastructure from 2024, enabling us to expand our preventive genetic control strategies (FenomicS Project) and biological control efforts (Biocontrol Project). Additionally, we made risk alerts for certain pests and diseases fully operational and dynamic, facilitating quicker and more targeted decision-making. This improvement will help us respond more effectively to smaller outbreaks of these pests and diseases.

Note:

1. License codes: Forest Stewardship BA - FSC-C155943; Forest Stewardship ES - FSC-C110130; Forest Stewardship MS - FSC-C100704; Forest Stewardship MA - FSC-C118283; Forest Stewardship SP - FSC-C009927.