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

Cane growth, leaf blade area, blade and petiole fresh and dry weights and mineral nutrients of six grape (Vitis vinifera) cultivars were evaluated in 2000 and 2001 under climatic conditions of southwestern Idaho. The cultivars were: `Barbera 02', `Cabernet Sauvignon 02', `Cabernet Sauvignon 04', `Chardonnay 29', `Merlot 01', and `Sangiovese 04'. No differences were found in cane growth of different cultivars. `Sangiovese 04' and `Merlot 01' had larger leaf area and heavier leaves (both blades and petioles) and higher concentrations of blade nitrogen (N), while `Merlot 01' and `Chardonnay 29' had higher petiole nitrate-N than all other cultivars. `Merlot 01' had relatively the highest potassium (K) concentrations in both blade and petiole tissues. `Chardonnay 29' had lower concentration of calcium (Ca) and `Sangiovese 04' had lower concentrations of magnesium (Mg) in both blade and petiole tissues than other cultivars although differences were not always significant. `Barbera 02' had higher blade iron (Fe) and tended to have higher blade copper (Cu) than other cultivars. However, `Chardonnay 29' had higher petiole Fe than `Barbera 02', `Cabernet Sauvignon 04', and `Sangiovese 04'. `Merlot 01' had higher blade manganese (Mn) than `Sangiovese 04'.

Download Full-text

Commercial Digital Camera to Estimate Postharvest Leaf Area Index in Vitis vinifera L. cv. Cabernet Sauvignon on a Vertical Trellis

Chilean journal of agricultural research ◽

10.4067/s0718-58392010000200015 ◽

2010 ◽

Vol 70 (2) ◽

pp. 315-322 ◽

Cited By ~ 1

Author(s):

Miguel Espinosa L. ◽

Eduardo Acuña C. ◽

Miguel Espinosa B. ◽

Juan Barrera B.

Keyword(s):

Vitis Vinifera ◽

Leaf Area Index ◽

Leaf Area ◽

Digital Camera ◽

Vitis Vinifera L ◽

Cabernet Sauvignon ◽

Area Index

Download Full-text

Studies with antitranspirants on grapevines (Vitis vinifera Var. Sultana)

Australian Journal of Agricultural Research ◽

10.1071/ar9690057 ◽

1969 ◽

Vol 20 (1) ◽

pp. 57 ◽

Cited By ~ 5

Author(s):

JV Possingham ◽

GH Kerridge ◽

DE Bottrill

Keyword(s):

Carbon Dioxide ◽

Vitis Vinifera ◽

Leaf Area ◽

Water Consumption ◽

Sugar Accumulation ◽

Root Weight ◽

Plastic Films ◽

Carbon Dioxide Uptake ◽

Matter Production ◽

Repeated Applications

A range of antitranspirants has been tested under glasshouse conditions for their effectiveness In reducing the water consumption of grapevines (Vitis vinifera cv. Sultana). The substances tested included three that form plastic films, Polycote J (Tag), Polycote S720, and Acropol (S789, a silicone type compound), and the inhibitor phenyl mercurrc acetate which 1s known to be effective at suppressing transpiration In cotton. The only substance found to be an effective transpiration suppressant was Acropol, which reduced water consumption by an average of 50% when applied as a leaf spray. Repeated applications at 12-day intervals were necessary and the substance had a morphogenetic effect, bringing about a significant increase In the leaf area but a decrease in dry matter production, especially evident In the lower root weight of treated plants. (Similar morphogenetic effects were shown with Polycote S720, where the increased leaf area was shown to be a result of increased leaf number despite a slightly lower mean leaf area ) In short-term experiments both Acropol and Polycote S720 reduced carbon dioxide uptake in the light and carbon dioxide output in the dark. When Acropol was applied to plants in the field it did not affect the rate of sugar accumulation In grapes.

Download Full-text

Non-destructive simple model to estimate the leaf area through midvein in cultivars of Vitis vinifera

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452021795 ◽

2021 ◽

Vol 43 (5) ◽

Author(s):

Amanda Heemann Junges ◽

Rafael Anzanello

Keyword(s):

Vitis Vinifera ◽

Mathematical Models ◽

Leaf Area ◽

Training System ◽

Cabernet Sauvignon ◽

Linear Potential ◽

Data Set ◽

Training Systems ◽

Vegetative Canopy ◽

Non Destructive

Abstract Mathematical models are indirect and non-destructive methods for estimating the leaf area (LA), an important parameter associated with canopy vigor in Vitis viniferavineyards. This work aims to adjust and test mathematical models for estimating LA using the midvein length of the Vitis vinifera cultivars conducted in horizontal and vertical training systems in the Serra Gaúcha region, Brazil. Leaves were collected in ‘Chardonnay’, ‘Cabernet Sauvignon’ vineyards conducted in trellis and lyre training systems, and in ‘Merlot’ vineyards conducted in trellis and espalier systems. Models were tested for establishing the correlations among the parameters LA and midvein length, considering the cultivar/training system and the general data set. For validation, linear regression between the observed and estimated LA was defined. The relationship between the midvein length and LA was defined by non-linear potential equations (R2aj 0.95-0.98). The performances of the specific and general models were similar regardless of the cultivar/training system. The adjusted models showed excellent results in the validation step (correlation 0.95-0.98; Wilmott index >0.97 and confidence index>0.92). It is possible to estimate the LA of Vitis vinifera Chardonnay, Cabernet Sauvignon, and Merlot cultivars using a simple non-destructive model that employs one single measurement of the leaf blade, to optimize the vegetative canopy quantification in vineyards.

Download Full-text

COEFICIENTE DE CULTIVO (Kc) DO MELOEIRO TIPO RENDILHADO CULTIVADO EM AMBIENTE PROTEGIDO

Irriga ◽

10.15809/irriga.2004v9n1p72-81 ◽

2004 ◽

Vol 9 (1) ◽

pp. 72-81 ◽

Cited By ~ 4

Author(s):

Tonny José Araújo da Silva ◽

Carmello Crisafulli Machado ◽

Edna Maria Bonfim-Silva ◽

Rubens Duarte Coelho

Keyword(s):

Leaf Area ◽

Water Consumption ◽

Plant Development ◽

Porous Ceramic ◽

Three Dimensional ◽

Crop Coefficient ◽

Individual Plant ◽

Dimensional Model ◽

Three Dimensional Model ◽

Crop Coefficients

COEFICIENTE DE CULTIVO (Kc) DO MELOEIRO TIPO RENDILHADO CULTIVADO EM AMBIENTE PROTEGIDO Tonny José Araújo da Silva; Carmello Crisafulli Machado; Edna Maria Bonfim-Silva; Rubens Duarte CoelhoDepartamento de Irrigação e Drenagem, Escola Superior de Agricultura “Luiz de Queiroz” ESALQ -Universidade de São Paulo, Piracicaba-SP, [email protected] RESUMO O objetivo deste trabalho foi quantificar o consumo de água do meloeiro rendilhado e estabelecer relações entre Kc e crescimento da planta (área foliar), para isso, utilizou-se lisímetros e tensiômetros, sendo os tratamentos em dois níveis de fertilidade. O experimento foi conduzido em ambiente protegido com a cultivar Bônus no 2 na área experimental do Departamento de Irrigação e Drenagem da Escola Superior de Agricultura “Luiz de Queiroz” - ESALQ/USP (SP). O lisímetro utilizado foi de tensão controlada, um dispositivo que utiliza cápsula porosa, capaz de fornecer água automaticamente e junto a um tubo Mariotte permite realizar leituras de volume. Foi utilizado o programa computacional TableCurve 3DTM para realizar o ajuste entre as variáveis de ETo, Kc e consumo (Cs) através de um modelo tridimensional. O valor total acumulado de consumo de água pelo meloeiro até 80 dias após o transplantio foi de 101 litros para plantas fertilizadas, enquanto o consumo nas mesmas condições de irrigação na ausência de fertilizantes, foi 26% menor. O Kc correlacionou-se com a área foliar com ajuste polinomial R2 de 90%, tendo sido registrado 4m2 o maior valor de área foliar de uma planta. Em relação às recomendações da FAO, observou-se menor valor de Kc máximo, o que mostra a importância de estudos locais de determinação da evapotranspiração e de coeficientes de cultivo em ambiente protegido. UNITERMOS: lisímetro, cápsula porosa, irrigação. SILVA, T. J. A. de; MACHADO, C. C.; BONFIM-SILVA, E. M.; COELHO, R. D. CROP COEFFICIENT (Kc) OF THE NET-MELON FRUITS CULTIVATED IN PROTECTED ENVIRONMENT ABSTRACT The objective of this work was to determine the water consumption of the net-melon fruits and establish relationships between Kc and the plant development (leaf area), based on ceramic porous lysimeters and two fertility levels. The experiment was carried out under rainfall protected environment conditions by cultivating Bonus 2, at the Irrigation and Draining Department of the Escola Superior de Agricultura ‘Luiz de Queiroz’ - ESALQ/USP (SP). Porous lysimeter is a device that uses porous ceramic cap, capable of supplying water automatically and when attached to a reservoir Mariotte it allows volume readings. A computer program was used to adjust data of ETo, Kc and Cs on a three-dimensional model. The total value accumulated for the melon water consumption until 80 days after the transplant was 101 liters for fertilized plants, while the consumption in the same irrigation conditions in the absence of fertilizers was 26% smaller. The Kc related to leaf area with polynomial adjustment R2 was 90% and the biggest value for leaf area of an individual plant was 4m². Regarding the FAO recommendations, a lower value of maximum Kc was observed in this experiment, which emphasizes the importance of local studies to determine evapotranspiration and crop coefficients in protected environment. KEY WORDS: lysimeter, porous cup, irrigation, evapotranspiration

Download Full-text

Estimating Processing Tomato Water Consumption, Leaf Area Index, and Height Using Sentinel-2 and VENµS Imagery

Remote Sensing ◽

10.3390/rs13061046 ◽

2021 ◽

Vol 13 (6) ◽

pp. 1046

Author(s):

Gregoriy Kaplan ◽

Lior Fine ◽

Victor Lukyanov ◽

V. S. Manivasagam ◽

Nitzan Malachy ◽

...

Keyword(s):

Leaf Area Index ◽

Leaf Area ◽

Water Consumption ◽

Optical Sensors ◽

Crop Coefficient ◽

Accurate Estimation ◽

Area Index ◽

Crop Height ◽

Processing Tomato ◽

Sentinel 2

Crop monitoring throughout the growing season is key for optimized agricultural production. Satellite remote sensing is a useful tool for estimating crop variables, yet continuous high spatial resolution earth observations are often interrupted by clouds. This paper demonstrates overcoming this limitation by combining observations from two public-domain spaceborne optical sensors. Ground measurements were conducted in the Hula Valley, Israel, over four growing seasons to monitor the development of processing tomato. These measurements included continuous water consumption measurements using an eddy-covariance tower from which the crop coefficient (Kc) was calculated and measurements of Leaf Area Index (LAI) and crop height. Satellite imagery acquired by Sentinel-2 and VENµS was used to derive vegetation indices and model Kc, LAI, and crop height. The conjoint use of Sentinel-2 and VENµS imagery facilitated accurate estimation of Kc (R2 = 0.82, RMSE = 0.09), LAI (R2 = 0.79, RMSE = 1.2), and crop height (R2 = 0.81, RMSE = 7 cm). Additionally, our empirical models for LAI estimation were found to perform better than the SNAP biophysical processor (R2 = 0.53, RMSE = 2.3). Accordingly, Sentinel-2 and VENµS imagery was demonstrated to be a viable tool for agricultural monitoring.

Download Full-text

Sistemas atmosféricos em Santa Catarina no período da maturação à colheita de videira Cabernet Sauvignon

Agrometeoros ◽

10.31062/agrom.v25i2.23591 ◽

2018 ◽

Vol 25 (2) ◽

Author(s):

Cristina Pandolfo ◽

Marilene De Lima ◽

Angelo Mendes Massignam ◽

Aparecido Lima da Silva ◽

Luiz Albano Hammes

Keyword(s):

Vitis Vinifera ◽

Vitis Vinifera L ◽

Cabernet Sauvignon ◽

Santa Catarina

Os sistemas atmosféricos exercem um papel significativo no clima de uma região e poucos trabalhos determinaram os impactos dos sistemas atmosféricos no desenvolvimento e na produção de videira. Os objetivos deste trabalho foram determinar a frequência de ocorrência dos sistemas atmosféricos durante o período da maturação à colheita da videira (Vitis vinifera L.) var. Cabernet Sauvignon para as duas regiões produtoras de Santa Catarina em diferentes safras e determinar a associação entre a ocorrência dos sistemas atmosféricos e as regiões produtoras e as safras. Os sistemas atmosféricos foram identificados durante as safras de 2005/2006 à 2008/2009. Os municípios de Água Doce e Campos Novos foram escolhidos para representar a região produtora 1 e os municípios de Bom Retiro e São Joaquim para representar a região produtora 2. As frequências de ocorrências dos sistemas atmosféricos durante o período da maturação à colheita de videira são muito semelhantes entre as regiões, somente houve diferença na frequência de ocorrência do sistema jato subtropical entre regiões. Houve uma diferença significativa da ocorrência da frequência dos sistemas atmosféricos entre safras.

Download Full-text