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Minimizing off-target drift of pesticides while optimizing spray efficacy is the desired goal for pesticide applicators. However, these two factors often offset one another; i.e., a reduction in drift potential may reduce efficacy. A unique nozzle-adjuvant system that has minimal driftable fraction at reduced spray volumes using invert emulsion technology was evaluated. Research was conducted to evaluate the effectiveness of several different agrichemicals at several different volumes using this nozzle-adjuvant system. Results indicated that spray volume for glyphosate-isopropylamine and glufosinate-ammonium could be substantially reduced when using the invert emulsion nozzle. Further, three common cotton defoliation products were as effective at 47 L/ha spray volume using the new spraying system compared with conventional application at 95 L/ha. In forestry site preparation research, several commonly used site preparation treatments were more effective at 47 L/ha spray volume using the invert emulsion technology than at 95 L/ha using AccuFlo nozzles.
invert emulsion, spray volume, glyphosate, glufosinate, imazapyr, fosamine, triclopyr, thiadiazuron, ethephon, endothall, phosphorodithioate
Product Development Manager, Exacto, Inc., Richmond, IL
Product Development Manager, Waldrum Specialties, Inc., Doylestown, PA
Research Director, Agrobiology Research, Inc., Memphis, TN