Abstract
In 2016, spray deposit measurements have been carried out according to ISO22522:2007 on a vine estate (Domaine Mas Piquet, 15 ha, Languedoc). On this estate, plots vigor ranges from low to medium compared to other vineyards. On 4 days (28th April, 25th May, 23rd June and 18th July 2016), spray deposition has been measured on 5 plots of different vine varieties chosen for their distinct vigor. Two different sprayers have been used: a low performance sprayer (pneumatic arch sprayer used every 4 rows) and a high performance sprayer (air assisted side by side sprayer). Spray deposition was measured using a tracer (Tartrazine E102) sprayed on sampling 40 cm² PVC collectors placed within the vegetation: on each plot, 4 trees have been sampled for each sprayer. On each tree, collectors were positioned on leaves within the canopy according to a profile perpendicular to the row, following a grid 20 cm high and 10 cm wide with one collector per pixel. A total amount of 3048 collectors have been analyzed individually. The dataset provide the normalized deposit expressed per unit of leaves area for one gram of tracer sprayed per hectare (unit: ng dm−2 for 1 g ha−1) on each collector. In addition, the dataset propose crop parameters measured manually on each sampled tree: inter-row distance, height, average of thickness in order to calculate two crop structure indicators: TRV (Tree Row volume) and LWA (Leaf Wall Area).
Highlights
Tree samplingFor each 15 m row section, 4 trees were selected to be the most vigorous trees on this section
Agronomy Pesticide application, plant protection Table of spray deposits and crop parameters Deposition: PVC collectors were positioned within the canopy
After optical density measurement (λ 1⁄4 427 nm) and considering the volume rate of mixture sprayed by hectare the normalized spray deposition was calculated for each collector
Summary
For each 15 m row section, 4 trees were selected to be the most vigorous trees on this section. Collectors were positioned on leaves within the canopy. Dimension of each PVC collector was 8 × 5 cm (Fig. 1). Collectors had a section in their middle in order to fold them in two pieces of 4 × 5 cm and to staple on the leaves. Collectors were positioned according to a profile perpendicular to the row, following a grid 20 cm high and 10 cm wide with one collector per pixel (Fig. 2). The number of collectors depended on the height and the width of the tree (Tables 1 and 2)
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