Which document should be consulted to determine eligibility for processed products of plants?

The document that should be consulted to determine eligibility for processed products of plants is PPQ 578. This specific form is critical as it outlines the requirements and regulations governing the importation of processed plant products. It provides valuable information regarding what constitutes a processed product and the phytosanitary measures necessary to ensure that these products meet U.S. standards for plant health.

PPQ 578 is designed to help stakeholders, including exporters and importers, understand the eligibility criteria for processed products, ensuring compliance with USDA regulations. This ensures that any processed plant products entering the U.S. do not pose a risk to domestic agriculture and natural resources.

Other options like PPQ 577, PExD, and PPQ 579 serve different purposes within the realm of plant health and quarantine compliance. While they may address other aspects of plant products or provide additional guidance, they do not specifically focus on the eligibility of processed products, making them less relevant for this particular inquiry. Therefore, PPQ 578 is the appropriate reference for determining eligibility for processed plant products.