Applying Pesticide on Fruit Tree Pests

Read carefully the entire label of each material that is to be used.

Under present federal regulations, it is illegal to apply any pesticide in a manner, rate, or dilution that is not recommended on the label. Check with the county agent or the agricultural research center in your area if there are any discrepancies between recommendations in this handbook and a pesticide label with regard to rates, dilutions, or manner of application.

Pests and strategies for their management vary throughout the Pacific Northwest. Complete spray schedules are available for the different growing regions of Washington, Oregon, and Idaho. The following insecticides and miticides are the general materials that are available for pest control—not all materials registered for a given use are listed. Specific materials and formulations may be more effective in certain areas of the Pacific Northwest than in others. Be sure to check with your county agent or agricultural research center in regard to specific management programs. Not all label restrictions can be listed here. You must read the label to ensure legal use.

COMMERCIAL GROWERS: The following materials and formulations presently are registered for use in the Pacific Northwest states for pest control in the various orchard crops. Application rates in the tables are based on current spray practices of up to 100 gallons of water per acre per application, except where the label specifies otherwise or for dormant/ delayed-dormant sprays where the historical dilute spray volumes of up to 400 gal water/acre are still recommended. The label rates are given per acre and must never be exceeded. Tree size, amount of foliage, type of equipment used, and other factors are important in determining the amount of spray solution to use per acre. When applying concentrate sprays (spray volumes of ≤100 gal water/a), use the per-acre rates or a modification of these rates according to the label. IRAC mode of action group numbers [Group X] are given for each of the chemicals suggested in the following list. To reduce the development of pesticide resistance, users should choose insecticides from these groups in rotation, using where possible at least three different registered groups in succession. (see