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BACKGROUNDSpray boom systems, an alternative to the predominantly‐used spray guns, have the potential to considerably improve crop protection management in glasshouses. Based on earlier experiments, the further optimization of the deposits of a medium spray quality extended range flat fan nozzle type using easy adjustable spray boom settings was examined. Using mineral chelate tracers and water sensitive papers, the spray results were monitored at three plant levels, on the upper side and the underside of the leaves, and on some off‐target collectors. In addition, the deposition datasets of all tree experiments were compared...
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