- Bin-run seed is the most common. It’s not cleaned, treated or tested prior to planting.
- Custom-cleaned bin-run seed has been cleaned or conditioned to improve its quality.
- Treated custom-cleaned bin-run seed has been cleaned or conditioned and treated prior to planting.
*Source: University of Nebraska-Lincoln Extension Research, albeit older research, also indicates there is a yield advantage to using certified seed. The Georgia Crop Improvement Association Small Grain Drill Box Survey in 1985 showed certified wheat seed had a 3 bu. per acre advantage over bin-run seed. A nearly $7 return over investment at the time. In addition, breeding has led to a yield gain of about 1% each year in winter wheat, so older, bin-run varieties might lack yield advantage simply because of their genetics. “[With certified seed] you know that nearly every seed you put in the ground is a viable seed and is going to be weed-free,” says Darwin Ediger, wheat grower and ownder of Ediger Ag, LLC. in a recent WestBred Wheat blog post. “You also know your seed-per-pound count, so you can target your ideal seeding rate. And, you have the flexibility to spread your risk out by planting multiple varieties, as opposed to being limited to those you planted last fall.”