期刊
CROP PROTECTION
卷 29, 期 3, 页码 239-248出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2009.12.022
关键词
Ultrasonic sensor; Vineyard; Canopy volume; Variable rate application; Precision viticulture; Crop-adapted spraying; Vine row volume (VRV)
类别
资金
- Spanish Ministry of Education and Science [AGL2007-66093-C04-02/AGR]
Two different spray application methods were compared in three vine varieties at different crop stages. A conventional spray application with a constant volume rate per unit ground area (1 ha(-1)) was compared with a variable rate application method designed to compensate electronically for measured variations in canopy dimensions. An air-blast sprayer with individual multi-nozzle spouts was fitted with three Ultrasonic sensors and three electro valves on one side, in order to modify the emitted flow rate of the nozzles according to the variability of canopy dimensions in real time. The Purpose of this prototype was to precisely apply the required amount of spray liquid and avoid over dosing. On average, a 58% saving in application volume was achieved with the variable rate method, obtaining similar or even better leaf deposits. (C) 2009 Elsevier Ltd. All rights reserved.
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