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A wide variety of tracers have been used to measure spray deposition such as active ingredient, water-soluble food dyes, fluorescent tracers and metal ions. Several advantages of mineral tracers have been reported, e.g. overcoming the errors arising from plot-to-plot variation, their stability in daylight, recovery, accuracy and similar behaviour as pesticides. Hence, our research group has used mineral chelates in several comparative spray application trials. In most cases, filter paper collectors (FPC) were used as artificial targets.
Regardless the advantages presented in literature, we still encounter scepticism about the mineral/FPC-tracer method in terms of recovery, relocation, leaching or interference of mineral tracers when applied to the same plot. The experiments showed that multiple mineral tracers can be used to assess the distribution and penetration of several spray application techniques in the same canopy, with minimal risk of leaching, interference and relocation of the tracers.
|Title of host publication||Aspects of Applied Biology : International Advances in Pesticide Application|
|Editors||P G Andersen, P Balsari, P I Carpenter, S E Cooper, C R Glass, B Magri, P C H Miller, C Mountford-Smith, T H Robinson, D Stock, W A Taylor, J van de Zande|
|Publisher||Association of Applied Biologists|
|Publication status||Published - 2014|
|Event||International Advances in Pesticide Application - Oxford, United Kingdom|
Duration: 8-Jan-2014 → 10-Jan-2014
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