Water consumption, crop coefficient and leaf area relations of a Vitis vinifera cv. 'Cabernet Sauvignon' vineyard

Munitz, Sarel; Schwartz, Amnon; Netzer, Yishai

doi:10.1016/j.agwat.2019.03.051

Cited by 57 publications

(47 citation statements)

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“…Aside from irrigation, experimental vines were treated by following local commercial vineyard growing practices (pest control, hedging treatments and winter pruning). Meteorological data were obtained from an automatic weather station located inside the vineyard; for detailed specifications of the station sensors see Munitz et al (2019).…”

Section: Experimental Sitementioning

confidence: 99%

Effect of timing of irrigation initiation on vegetative growth, physiology and yield parameters in Cabernet Sauvignon grapevines

Munitz

Schwartz

Netzer

2020

Australian Journal of Grape and Wine Research

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Background and Aims: The effect of the timing of the initiation of irrigation during the growing season on Vitis vinifera L. Cabernet Sauvignon vines was investigated during 5 successive years. Methods and Results: Five irrigation initiation thresholds based on measurement of midday stem water potential (Ψ s) were examined: at Budburst, −0.6 MPa, −0.8 MPa, −1.0 MPa and − 1.2 MPa. Midday Ψ s , gas exchange parameters [stomatal conductance (g s) and net assimilation rate (A n)] and leaf area index (LAI) were measured weekly. At harvest, 12 vines per replicate (48 per treatment) were separately harvested, the yield was determined and the number of bunches per vine recorded. During the winter period, the number of shoots per vine and the pruning mass of 12 vines per replicate were recorded separately. Vines in the early irrigation treatments (Budburst, −0.6 MPa) displayed improved Ψ s , g s and A n , accompanied by vigorous vegetative growth and high yield. The increased yield was derived from enlarged berry size and an increased number of bunches. In contrast, vines in the late irrigation treatments (−1.0 MPa, −1.2 MPa) exhibited low Ψ s , g s and A n values combined with depressed vegetative growth and reduced yield. The depression effect on late irrigation vines was cumulative and became more pronounced as trial years advanced. Our results emphasise the crucial role of water availability during springtime (vegetative growth period) on vine development, physiological performance and yield parameters. Conclusions: Early irrigation initiation during spring, in which most vegetative growth processes occur, resulted in the enhancement of all vegetative and physiological parameters. Postponing irrigation initiation, however, until advanced stages of the growing season was followed by diminished vegetative growth, reduced physiological performance and decreased yield. Significance of the Study: Our results provide insights into the effect of the timing of irrigation initiation on vegetative growth, physiological parameters and yield components in field-grown Cabernet Sauvignon grapevines.

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Section: Experimental Sitementioning

confidence: 99%

Effect of timing of irrigation initiation on vegetative growth, physiology and yield parameters in Cabernet Sauvignon grapevines

Munitz

Schwartz

Netzer

2020

Australian Journal of Grape and Wine Research

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“…La recuperación de los árboles afectados por el defoliador es vital desde las perspectivas hidráulica y fisiológica, pero su impacto en el crecimiento y la productividad es significativo. Dada la pérdida energética por la ausencia de procesos fotosintéticos, la recuperación gradual del árbol depende del aumento del IAF, aspecto que Wang, et al (2019) consideraron fundamental para mejorar las condiciones de la planta, ya que cuanto mayor sea el aumento de láminas foliares, la estabilización fisiológica e hidráulica será mayor y, con ello, la reactivación de crecimiento será menor, de ahí que el uso de técnicas como la inyección nutricional en el fuste o la aplicación de nutrimientos en el suelo ricos en nitrógeno, fósforo y potasio puede mejorar la capacidad de recuperación de los árboles . Munitz, et al (2019) determinaron en especies arbustivas una disminución del 33 % en el tiempo de recuperación de arbustos podados a los que se les aplicó fertilizante en el suelo, debido a que obtuvieron mayor cantidad de elementos nutricionales movilizados a la copa y con la capacidad de sintetizar carbohidratos y proteínas que permitieran la formación de nuevas hojas.…”

Section: Discussionunclassified

Efectos del defoliador Atta cephalotes Linnaeaus. en el crecimiento y el desarrollo fisiológico e hidráulico de árboles juveniles de Gmelina arborea Roxb. en condiciones controladas

Valverde¹,

Mendez

Arias‐Aguilar³

2020

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Atta cephalotes es una especie de insecto defoliador que afecta el desarrollo del Gmelina arborea en condiciones de cultivo comercial; sin embargo, son pocos los estudios que analizan el proceso de recuperación del G. arbórea desde el punto de vista fisiológico. En el presente análisis se evaluaron los efectos de la defoliación por A. cephalotes en el crecimiento y el desarrollo fisiológico e hidráulico de árboles juveniles. Se utilizaron 25 árboles con edad y condiciones morfométricas similares bajo las mismas condiciones ambientales; 16 de ellos se expusieron al ataque del insecto y su recuperación se evaluó durante 510 días, valorando el crecimiento (de diámetro y altura total), el desarrollo fisiológico (índice de área foliar, IAF; transpiración y valores de SPAD) e hidráulico (turgencia, movimiento del flujo de la savia, MFS, y contenido de humedad foliar, CHF). Se encontró que las plantas atacadas sufrieron un déficit de crecimiento diamétrico del 39,0 % y de 64,3 % en altura. A nivel fisiológico se requirieron 120 días para la recuperación de los valores de SPAD y 150 días para recuperar la conductancia estomática y el IAF a niveles similares a los del control. En cuanto a las variables hidráulicas, el periodo fue menor: la turgencia foliar se recuperó en 45 días y el MFS y la CHF en 60 días para alcanzar los mismos valores del control. Este comportamiento se explicaría por el estrés de la defoliación que obliga al árbol a reiniciar la recomposición foliar, lo que requiere el movimiento de azúcares, nutrientes y agua y hace que el movimiento hidráulico sea primordial para evitar la muerte del árbol por estrés.

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“…A yield map was also used for analyzing the association between ET spatial pattern and yield levels [21]. The yield map ( Figure 4) was provided by E&J Gallo Winery using Advanced Technology Viticulture (ATV, Joslin, Australia) yield monitoring systems that were applied in the vineyard during the harvest in August 22, 2016.…”

Section: Yieldmentioning

confidence: 99%

“…The ability to quantify ET values in the field is highly valuable for determining the water stress of the crops and planning the amounts and timing of irrigation at different timesteps during the growing season [19,20]. Over the past two decades, many techniques for acquiring information regarding ET levels have been proposed and successfully applied [21][22][23]. However, these approaches lack the ability to provide routine spatial information about sub-field heterogeneity in plant conditions and water use/stress.…”

Section: Introductionmentioning

confidence: 99%

Using Satellite Thermal-Based Evapotranspiration Time Series for Defining Management Zones and Spatial Association to Local Attributes in a Vineyard

et al. 2020

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A well-planned irrigation management strategy is crucial for successful wine grape production and is highly dependent on accurate assessments of water stress. Precision irrigation practices may benefit from the quantification of within-field spatial variability and temporal patterns of evapotranspiration (ET). A spatiotemporal modeling framework is proposed to delineate the vineyard into homogeneous areas (i.e., management zones) according to their ET patterns. The dataset for this study relied on ET retrievals from multiple satellite platforms, generating estimates at high spatial (30 m) and temporal (daily) resolutions for a Vitis vinifera Pinot noir vineyard in the Central Valley of California during the growing seasons of 2015-2018. Time-series decomposition was used to deconstruct the time series of each pixel into three components: long-term trend, seasonality, and remainder, which indicates daily fluctuations. For each time-series component, a time-series clustering (TSC) algorithm was applied to partition the time series of all pixels into homogeneous groups and generate TSC maps. The TSC maps were compared for spatial similarities using the V-measure statistic. A random forest (RF) classification algorithm was used for each TSC map against six environmental variables (elevation, slope, northness, lithology, topographic wetness index, and soil type) to check for spatial association between ET-TSC maps and the local characteristics in the vineyard. Finally, the TSC maps were used as independent variables against yield (ton ha-1) using analysis of variance (ANOVA) to assess whether the TSC maps explained yield variability. The trend and seasonality TSC maps had a moderate spatial association (V = 0.49), while the remainder showed dissimilar spatial patterns to seasonality and trend. The RF model showed high error matrix-based prediction accuracy levels ranging between 86% and 90%. For the trend and seasonality models, the most important predictor was soil type, followed by elevation, while the remainder TSC was strongly linked with northness spatial variability. The yield levels corresponding to the two clusters in all TSC were significantly different. These findings enabled spatial quantification of ET time series at different temporal scales that may benefit within-season decision-making regarding the amounts, timing, intervals, and location of irrigation. The proposed framework may be applicable to other cases in both agricultural systems and environmental modeling.

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Water consumption, crop coefficient and leaf area relations of a Vitis vinifera cv. 'Cabernet Sauvignon' vineyard

Cited by 57 publications

References 56 publications

Effect of timing of irrigation initiation on vegetative growth, physiology and yield parameters in Cabernet Sauvignon grapevines

Effect of timing of irrigation initiation on vegetative growth, physiology and yield parameters in Cabernet Sauvignon grapevines

Efectos del defoliador Atta cephalotes Linnaeaus. en el crecimiento y el desarrollo fisiológico e hidráulico de árboles juveniles de Gmelina arborea Roxb. en condiciones controladas

Using Satellite Thermal-Based Evapotranspiration Time Series for Defining Management Zones and Spatial Association to Local Attributes in a Vineyard

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