Vineyard irrigation scheduling based on airborne thermal imagery and water potential thresholds

• DOI: 10.1111/ajgw.12173
• Publication Date: 2015-09-22T05:57:59Z
• Authors: J. Bellvert; P.J. Zarco-Tejada; J. Marsal; J. Girona; V. González-Dugo; E. Fereres
• Keywords: Vineyard; Irrigation scheduling; Growing season

Background and Aims Mapping the spatial variability of vine water status within a vineyard is necessary for efficient management irrigation water. The objective this study was to determine whether estimates remotely sensed leaf potential (Ψrem) could be employed as precise tool scheduling at sector level throughout season. Methods Results Three treatments were applied in 16-ha commercial analyse performance proposed methodology monitoring regulated deficit strategies, evaluate required frequency acquisition thermal images scheduling. An aircraft equipped with sensor flew over season, averaged Ψrem each used trigger. about five or six maps season recommended. starting date acquiring depends on canopy vegetation size difficulty extracting pure pixels. effect imagery days after rainfall low vapour pressure deficits affected estimation Ψrem, these constraints need considered feasible purposes. Conclusions Remotely successfully an trigger adopt strategies without any negative yield wine composition. Significance Study This presented promising powerful method based potential.