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Drift curves from spray applications on commom bean crop

机译：普通豆类作物喷施的漂移曲线

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In order to avoid the occurrence of drift in pesticide applications, it is fundamental to know the behavior of sprayed droplets. This study aimed to determine drift curves in pesticide applications on common bean crop under brazilian weather conditions, using different nozzle types and compared them with the "German" and "Dutch" drift prediction models. The experiment was conducted in Uberl?￠ndia, Minas Gerais/Brazil, in completely randomized design with ten replications and 4 x 20 split-plot arrangement in space. Drift deposited on collectors located over ground level was resulted by 150 L ha -1 carrier volume applications through four nozzle types (XR 11002 (fine droplets); AIXR 11002 (coarse droplets); TT 11002 (medium droplets); TTI 11002 (extremely coarse droplets)), collected in 20 downwind distances, parallel to the crop line outside the target area, spaced by 2.5 m. The tracer rhodamine B was added to the spray to be quantified by fluorimetry. Drift prediction models adjusted by exponential functions were obtained considering the 90 th percentile for XR, TT, AIXR and TTI nozzles. It is suggested to use the estimated drift models from this study for each nozzle type in drift prediction evaluations on bean crops under brazilian weather conditions.
机译：为了避免在农药施用中发生漂移，了解喷雾液滴的行为至关重要。这项研究旨在确定巴西天气条件下普通豆类作物上农药施用的漂移曲线，使用不同的喷嘴类型，并将其与“德国”和“荷兰”漂移预测模型进行比较。该实验是在巴西米纳斯吉拉斯州的Uberl？ndia进行的，完全随机的设计，其中有10个重复，并且在空间中设置了4 x 20的拆分图。通过四种喷嘴类型（XR 11002（细小液滴）; AIXR 11002（粗小液滴）; TT 11002（中小液滴）; TTI 11002（极粗大的液滴），通过150 L ha -1的载体体积施加，导致沉积在地面上的收集器上的漂移液滴），收集在顺风方向20个距离处，与目标区域外部的作物行平行，相距2.5 m。将示踪剂若丹明B添加到喷雾中以通过荧光定量。考虑到XR，TT，AIXR和TTI喷嘴的第90个百分位数，获得了通过指数函数调整的漂移预测模型。建议在巴西天气条件下，对豆类作物的漂移预测评估中使用每种喷嘴类型的研究估计的漂移模型。

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