Contact your field inspector, the state seed certification agency or your local county extension agent when you have a question or problems that require correcting. Make sure your fields are inspected and pass before harvest. Harvest Use an air hose with good pressure and a vacuum cleaner to clean harvest and storage equipment. If while inspecting any part of the combine, trucks or bins you can tell what was harvested, hauled or stored in them previously, then you haven't done a good enough job of cleaning. Combines and handling equipment must be carefully cleaned.
Grain hangs up on braces, augers, etc.
Be prepared to shut down for three to four hours or more for proper cleaning. Even after thorough cleaning many certified seed producers will take the first harvested round from a certified field and haul the grain to their elevator to be sold as grain, not seed. This may reduce the risk of contaminating seed. Clean the combine thoroughly before harvesting seed acres or delay harvest of contaminated areas until the clean area is harvested for certified grain. Seed Conditioning Remember that having your field approved does not mean you have successfully grown certified seed.