The use of a scanning Light Detection and Ranging (LIDAR) system to
characterize drift during pesticide application is described. The LIDAR system is compared
with an ad hoc test bench used to quantify the amount of spray liquid moving beyond the
canopy. Two sprayers were used during the field test; a conventional mist blower at two air
flow rates (27,507 and 34,959 m3·h-1) equipped with two different nozzle types
(conventional and air injection) and a multi row sprayer with individually oriented air
outlets. A simple model based on a linear function was used to predict spray deposit using
LIDAR measurements and to compare with the deposits measured over the test bench.
Results showed differences in the effectiveness of the LIDAR sensor depending on the
sprayed droplet size (nozzle type) and air intensity. For conventional mist blower and low
air flow rate; the sensor detects a greater number of drift drops obtaining a better
correlation (r = 0.91; p < 0.01) than for the case of coarse droplets or high air flow rate. In
the case of the multi row sprayer; drift deposition in the test bench was very poor. In
general; the use of the LIDAR sensor presents an interesting and easy technique to
establish the potential drift of a specific spray situation as an adequate alternative for the
evaluation of drift potential.
CitationGil, E. [et al.]. Use of a terrestrial LIDAR sensor for drift detection in vineyard spraying. "Sensors", 02 Gener 2013, vol. 13, núm. 1, p. 516-534.
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