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Aerial Spray Drift and Atomization Recommendations

D.B. Smith, M.H. Willcutt, D.L. Valcore, J.W. Barry, M.E. Teske


This work was sponsored by the U.S. Environmental Protection Agency, the Mississippi Department of Agriculture; Bureau of Plant Industries, Mississippi Agricultural & Forestry Experiment Station, Mississippi Cooperative Extension Service, U.S. Forest Service and DowElanco. This research was initially reported in MAFES Information Bulletin 251.

Mention of a trade name is solely for the purpose of clarification and does not indicate an endorsement of any of the agencies involved. There may be similar products which will function equally well.

A sensitivity analysis was run using three different aerial spray drift models. The combined analysis indicated that droplet size, downwind distance, wind speed and boom (flight) height were the four most important, drift related variables of the 10 studied. Two of these variables can be controlled directly by the applicator and the other two can be influenced via management decisions. Equipment and operating conditions are given for three specific droplet sizes when a pilot wants to use any of four aircraft speeds or four gallonages.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pp. 1560 - 1563
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998