Proximal sensing is being integrated into vineyard management as it provides rapid assessments of spatial variability of soils’ and plants’ features. The electromagnetic induction (EMI) technology is used to measure soil apparent electrical conductivity (EC_a) with proximal sensing and enables to appraise soil characteristics and their possible effects on plant physiological responses. This study was conducted in a micro irrigated Cabernet Sauvignon (Vitis vinifera L.) vineyard to investigate the technical feasibility of appraising plant water status and its spatial variability using soil EC_a and must carbon isotope ratio analysis (δ¹³C). Soil temperature and soil water content were monitored in-situ using time domain reflectometry (TDR) sensors. Soil EC_a was measured with EMI at two depths [0–1.5 m (deep EC_a) and 0–0.75 m (shallow EC_a)] over the course of the crop season to capture the temporal dynamics and changes. At the study site, the main physical and chemical soil characteristics, i.e. soil texture, gravel, pore water electrical conductivity (EC_e), organic carbon, and soil water content at field capacity, were determined from samples collected auguring the soil at equidistant points that were identified using a regular grid. Midday stem water potential (Ψ_stem) and leaf gas exchange, including stomatal conductance (g_s), net carbon assimilation (A_n), and intrinsic water use efficiency (WUE_i) were measured periodically in the vineyard. The δ¹³C of produced musts was measured at harvest. The results indicated that soil water content (relative importance = 24%) and texture (silt: relative importance = 22.4% and clay: relative importance = 18.2%) were contributing the most towards soil EC_a. Deep soil EC_a was directly related to Ψ_stem (r² = 0.7214) and g_s (r² = 0.5007). Likewise, δ¹³C of must was directly related to Ψ_stem (r² = 0.9127), g_s (r² = 0.6985), and A_n (r² = 0.5693). Results from this work provided relevant information on the possibility of using spatial soil EC_a sensing and δ¹³C analysis to infer plant water status and leaf gas exchange in micro irrigated vineyards.

近距离传感已被集成到葡萄园管理中，因为它可以快速评估土壤和植物特征的空间变异性。电磁感应（EMI）技术用于通过近端传感来测量土壤表观电导率（EC _a），并能够评估土壤特性及其对植物生理反应的可能影响。本研究是在灌溉赤霞珠微进行（葡萄属）葡萄园调查评价植物水的状态和它的空间变异使用土壤EC的技术可行性_一个和必须的碳同位素比率分析（δ ¹³ C）。现场监测土壤温度和土壤含水量使用时域反射法（TDR）传感器。在作物季节期间，用EMI在两个深度[0-1.5 m（深EC _a）和0-0.75 m（浅EC _a）]处测量土壤EC _a，以捕获时间动态和变化。在研究现场，从收集的等距点土壤样本中确定了土壤的主要物理和化学特性，即土壤质地，砾石，孔隙水电导率（EC _e），有机碳和土壤水含量。使用常规网格确定的 午间茎水势（Ψ_茎）和叶片气体交换，包括气孔导度（g _s），净碳同化（A_n），并定期测量葡萄园的内在水分利用效率（WUE _i）。的δ ¹³产生葡萄汁的下在收获时测定。结果表明，土壤含水量（相对重要性= 24％）和质地（淤泥：相对重要性= 22.4％，粘土：相对重要性= 18.2％）对土壤EC _a的贡献最大。深层土壤EC _a与_茎干（r ²  = 0.7214）和g _s（r ²  = 0.5007）直接相关。同样，Δ ¹³绝下直接相关的Ψ_干（R ²  = 0.9127），克_小号（r ²  ＝ 0.6985）和A _n（r ²  ＝ 0.5693）。从这项工作的结果提供在使用空间土壤EC的可能性相关的信息_一感测和δ ^13个分析C来推断植物水的状态和在微灌溉葡萄园叶片的气体交换。