Apr 26, 2018
Take applicator precautions to reduce pesticide drift risks

As crop-planting and growing season gets into full swing, now is peak time for applying pesticides across Washington agriculture country. Pesticide applicators are responsible for assuring that pesticides do not drift off-target.

Last year, Washington State Department of Agriculture’s (WSDA) Pesticide Management Division investigated 161 incidents involving potential violations of the state’s pesticide laws and 64 of those involved allegations of pesticides drifting onto neighboring property. So far this year, WSDA has received nine complaints of pesticide drift and most involve potential human exposure. All are currently being investigated.

To ensure that pesticides do not drift beyond the intended treatment area, WSDA offers the following suggestions to reduce the risk.

Measuring nozzle output, as practiced in a WSDA training for pesticide applicators. rea, WSDA offers the following suggestions to reduce the risk.
  • Read the label on the pesticides being applied and abide by all precautions and restrictions on safe handling, necessary protective equipment, buffers, the effect on crops and more.
  • Pay special attention near sensitive areas such as highways, homes, schools and other occupied dwellings or where workers are present.
  • Properly calibrate equipment, using the proper nozzles and pressure to keep the spray on-target.
  • Based on the amount of foliage and tree size and shape, optimize your sprayer by using the appropriate volumes of water and air, and the correct pressure and nozzle size.
  • Scout the areas bordering the place that’s being treated.
  • Evaluate conditions such as wind speed, wind direction, and temperature.
  • Stop applying immediately if conditions change in ways that increase the risk of drift to unsafe levels or if anyone approaches the area without proper protection.

WSDA licenses about 28,000 pesticide applicators, dealers, consultants and inspectors. Licensees are trained to apply pesticides safely. If problems do occur, WSDA will investigate complaints that allege the state’s pesticide laws have been violated — including cases of drift, worker exposure, or environmental harm.

To file a complaint, email [email protected] or call toll free to 1-877-301-4555. When you call, have as much information as possible ready to share with the investigator.

The state Department of Health investigates potential cases of pesticide illnesses. Visit their website for more information.

– Joel Kangiser, Pesticide Management Division, Washington State Department of Agriculture

Current Issue


High tunnels help Sugar Top Farm fight insects, heat

Comparing nitrogen management technologies

MSU studies potato early die complex

High tunnel boost: Improve production

GL EXPO: ‘Fancy Lady Cowgirl’ and the digital market space


see all current issue »

Be sure to check out our other specialty agriculture brands

produceprocessingsm Organic Grower