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Old 02-27-2013, 12:31 AM
greendoctor greendoctor is offline
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Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,342
Most non air inducted flat fan nozzles suck in the wind. I remember one of my friends running a herbicide trial. He had one of those 9' booms with the nozzles spaced at 10". They were conventional flat fans. He was applying a combination of Celsius and Monument. As it was blowing about 10 MPH with shifts in direction and gusts, I was worried about the trees down wind. If the trees were killed or damaged, that is chemical trespass. I consider conventional flat fans unusable for herbicides except in perfectly still conditions. In my location that is a rare event and those perfectly still conditions are normally accompanied by weather conducive to inversion or volatility.
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