Influence of Spray Technology and Application Rate on Leaf Deposit and Ground Losses in Mountain Viticulture

Costas Michael, Emilio Gil, Montserrat Gallart and Menelaos C. Stavrinides
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Costas Michael: Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Arch. Kyprianos 30, 3036 Limassol, Cyprus
Emilio Gil: Department of Agri-Food Engineering and Biotechnology, Campus del Baix Llobregat, Universitat Politècnica de Catalunya, Esteve Terradas, 8, 08860 Castelldefels, Spain
Montserrat Gallart: Department of Agri-Food Engineering and Biotechnology, Campus del Baix Llobregat, Universitat Politècnica de Catalunya, Esteve Terradas, 8, 08860 Castelldefels, Spain
Menelaos C. Stavrinides: Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Arch. Kyprianos 30, 3036 Limassol, Cyprus

Agriculture, 2020, vol. 10, issue 12, 1-18

Abstract: Leaf deposit and ground losses generated from spray application in mountain viticulture were evaluated. Four treatments were examined: A spray gun (1000 L ha −1 , High-Volume Sprayer—HVS), a motorized knapsack sprayer (200 L ha −1 , Low Volume Sprayer—LVS), and a conventional orchard mist blower calibrated at 500 L ha −1 (OS500) or 250 L ha −1 (OS250). The four treatments were assessed using the same tank concentration of tracer in two training systems: a trellis and a goblet. Sprayer treatment, vine side, and vine height significantly affected leaf deposit ( p < 0.05). The absolute amount of leaf deposit increased with application volume, but when the amount of deposit was standardized to 1 kg ha −1 , LVS resulted in the highest deposit, followed by HVS, OS250, and OS500. Deposition for the goblet system was ca. half that for the trellised vineyard. Ground losses standardized to 1 kg of tracer ha −1 were twice as high for HVS than for LVS, and four times as high for HVS than for OS250 and OS500, in both training systems. The current work suggests that low volume applications in vineyards are a viable and more environmentally friendly alternative than high volume treatments.

Keywords: volume rate; spray deposition; losses to the ground; viticulture (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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