Thanks are given to the many Washington fruit producers and contractors who provided the information summarized in these reports. Detailed reports, such as these, would not be possible without their voluntary cooperation. Terms and Definitions Agricultural chemicals refers to the active ingredients in fertilizers and pesticides. Fertilizer in this report refers to applications of the primary nutrients, nitrogen, phosphate, and potash. Pesticides include any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest, and any substance or mixture of substances intended for use as a plant regulator, defoliant, or desiccant.
Pests targeted by pesticides includes weeds, insects, fungi, and other forms of life.
Herbicides, insecticides, fungicides, and other chemicals make up the four classes of pesticides presented in this report. Miticides and nematicides are included as insecticides, while soil fumigants, growth regulators, defoliants, and desiccants are included as other chemicals. This report excludes pesticides used for seed treatments and for postharvest applications to the commodity. Active ingredient is the specific chemical which kills or controls the target pests. Usage data are reported by pesticide product and are converted to an amount of active ingredient.