There are several types of drift: "climatic" drift caused by the wind and drift created by the spraying operation itself. The factors influencing drift are as follows:
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The most common way of reducing drift today is the use of air-injection nozzles. Under the terms of the decree of 12/09/2006 regarding protection of buffer areas, NOZAL ADX and BFS Air Bubble Jet nozzles are two of the Ministry-approved nozzles.
You can find descriptions of the NOZAL range of nozzles under "Nozzles"