Droplets deposition pattern from a prototype of a fixed spraying system in a sloping vineyard

In Italy high-quality vines are sometimes grown in small fields with slope steeper than 5–10%, where an air-blast sprayer is impractical so spray-gun application of pesticides is used, a technique that is very costly and labour intensive, and that causes high pesticide exposure of the operators. A p...

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Published in:The Science of the total environment 2018-10, Vol.639, p.92-99
Main Authors: Otto, Stefan, Loddo, Donato, Schmid, Arno, Roschatt, Christian, Venturelli, Maria, Innerebner, Gerd
Format: Article
Language:English
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Exposure of farmers to pesticides
Pesticide application technique
Spray drift
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description In Italy high-quality vines are sometimes grown in small fields with slope steeper than 5–10%, where an air-blast sprayer is impractical so spray-gun application of pesticides is used, a technique that is very costly and labour intensive, and that causes high pesticide exposure of the operators. A possible alternative is the use of a fixed spraying system, and the first researches are in progress in Italy. A fixed spraying system prototype was built in a vineyard at Laimburg Research Centre with an upper line with micro-sprinkler and a lower line with cooler-type nozzles, and a trial was performed with the aim of measuring the deposition pattern of droplets on the row and between rows with water sensitive papers, also in comparison with a precise low-drift air-blast sprayer. Results show that with the fixed spraying system the treated crop row accounts for 38–44% of total deposition, that about 85–88% of sprayed solution falls on the sprayed row and on the closest right and left adjacent inter-rows, and that at 4 m from the spraying line the spray drift was
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subjects Exposure of farmers to pesticides
Pesticide application technique
Spray drift
title Droplets deposition pattern from a prototype of a fixed spraying system in a sloping vineyard
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