Fertilizers

Oregon law

Oregon law defines the following:

• Agricultural amendment: A mixed or unmixed synthetic chemical substance, a chemically or physically modified natural substance, a naturally occurring substance or a manufacturing by-product, or a combination of those substances or by-products, intended to induce crop yields or plant growth or to produce any physical, microbial, or chemical change in the soil.
• Agricultural mineral: A mineral substance, mixture of mineral substances or mixture of mineral and organic substances containing less than five percent of total nitrogen (N), available phosphate (P2O5) or soluble potash (K2O), singly, collectively or in combination, designed for use principally as a source of plant food, in inducing increased crop yields or plant growth or producing any physical, microbial, or chemical change in the soil.
• Fertilizer: Any substance, or any combination or mixture of substances, that is designed for use primarily as a source of plant food, in inducing increased crop yields or plant growth, or producing any physical, microbial or chemical change in the soil, and that contains five percent or more of total nitrogen (N), available phosphate (P2O5) or soluble potash (K2O), singly, collectively, or in combination.
• Lime: Any substance or mixture of substances having calcium or magnesium compounds capable of neutralizing soil acidity.

See the law (ORS 633.311) for additional details.

Product Advisory

12/10/2020

• Agro Research International, LLC's Agro Gold WS Biological Amendment contains Diquat and Glyphosate

Fertilizer Program resources

• Fertilizer Program Guide
  Licensing, registration, and labeling of fertilizing materials.
• Lime Questions and Answers brochure
• Selling Garden Products in Oregon: A Quick Guide to Your Responsibilities
• Selling Garden Products in Oregon: Retail Sale of Feed, Fertilizer or Seed in Bins

Laws and rules

• Oregon Fertilizer Laws: ORS 633
  Laws governing fertilizer, agricultural amendment and lime products.
• Oregon Fertilizer Rules: OAR 603-059
  Rules governing fertilizer, agricultural amendments and lime products