Spray Drift Task Force
Publications:

The goal of aerial applicators is to protect crops from diseases, insects and weeds while keeping drift as close to zero as possible. The SDTF studies show that drift can be kept very low by using good application procedures.

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Based on data generated by the SDTF, in a typical full field ground hydraulic application, more than 99.9 percent of the applied active ingredient stays on the field and less than one tenth of one percent drifts.

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Although drift from orchards is due to the interaction of many canopy-related factors, downwind ground deposition tended to increase with increasing tree height.

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Drift from the high pressure system was greater than from the low pressure system primarily because of the higher release height of the droplets.

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The SDTF confirmed that nozzle type, orifice size, spray angle, spray pressure and the physical properties of the spray mixture are the primary factors affecting droplet size spectra from agricultural nozzles.

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The literature cited in this report shows that drift reduction of up to 90 % can typically be achieved using appropriate vegetative or natural barriers downwind of a spray area.

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AgMWS

 

An Excel Workbook application designed to assist AgDRIFT 2.0 / AGDISP 8.15 user calculate the non-volatile component of the spray tank mixture.

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Rev. October 27, 2006