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Regional dynamics in evapotranspiration components, crop coefficients, and water productivity of vineyards

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  • Phogat, V.
  • Petrie, P.R.
  • Bonada, M.
  • Collins, C.

Abstract

Estimation of water balance components, crop coefficients, and water productivity at multiple locations are crucial for understanding regional dynamics in irrigation requirement and efficient use of scarce water resources. These parameters were estimated for irrigated Shiraz vineyards over 3 consecutive seasons (2018–19–2020–21) at 48 locations in the Barossa, South Australia using the FAO-56 dual crop coefficient approach. Results showed large variability in water balance parameters, crop and water stress coefficients, and water productivity. A coefficient of variation ranging from 20 % to 97 % was observed in daily and seasonal actual evapotranspiration across sites and seasons. Average actual transpiration and evaporation account for around 63 and 37 % of the seasonal actual evapotranspiration, respectively, showing the potential to save water lost to the environment from the soil surface. Estimated actual single crop coefficient across all sites varied from 0.32 to 0.76, 0.35–0.59, 0.16–0.62 and 0.16–0.64 during the initial day (D60) to budburst (initial), budburst to flowering (mid1), flowering to veraison (mid2), and veraison to harvest (late) stages of crop growth, respectively. The actual basal crop coefficients for grapevine reveal considerable site-specific variability, questioning the value of adopting uniform coefficients across growth stages and at subregional and regional levels. Water stress gradually increased reaching its peak from late November to early December, with variations across the region ranging from 20 % to 64 %. A comparison of water productivities in relation to seasonal actual evapotranspiration and transpiration exhibits 60 % higher values for the latter across all the sites and subregions. Locally estimated crop coefficients will contribute to the efficient use of limited freshwater resources for sustainable wine grape production.

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  • Phogat, V. & Petrie, P.R. & Bonada, M. & Collins, C., 2025. "Regional dynamics in evapotranspiration components, crop coefficients, and water productivity of vineyards," Agricultural Water Management, Elsevier, vol. 322(C).
    • Handle: RePEc:eee:agiwat:v:322:y:2025:i:c:s0378377425006699
    DOI: 10.1016/j.agwat.2025.109955
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    1. Peddinti, Srinivasa Rao & Kambhammettu, BVN P, 2019. "Dynamics of crop coefficients for citrus orchards of central India using water balance and eddy covariance flux partition techniques," Agricultural Water Management, Elsevier, vol. 212(C), pages 68-77.
    2. Pereira, L.S. & Paredes, P. & Melton, F. & Johnson, L. & Wang, T. & López-Urrea, R. & Cancela, J.J. & Allen, R.G., 2020. "Prediction of crop coefficients from fraction of ground cover and height. Background and validation using ground and remote sensing data," Agricultural Water Management, Elsevier, vol. 241(C).
    3. Pôças, I. & Calera, A. & Campos, I. & Cunha, M., 2020. "Remote sensing for estimating and mapping single and basal crop coefficientes: A review on spectral vegetation indices approaches," Agricultural Water Management, Elsevier, vol. 233(C).
    4. Patrik Burg & Vladimír Mašán & Martin Dušek & Pavel Zemánek & Kazimierz Rutkowski, 2017. "Review of energy potential of the wood biomass of orchards and vineyards in the Czech Republic," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 63(SpecialIs), pages 1-7.
    5. Pereira, L.S. & Paredes, P. & López-Urrea, R. & Hunsaker, D.J. & Mota, M. & Mohammadi Shad, Z., 2021. "Standard single and basal crop coefficients for vegetable crops, an update of FAO56 crop water requirements approach," Agricultural Water Management, Elsevier, vol. 243(C).
    6. Er-Raki, S. & Chehbouni, A. & Boulet, G. & Williams, D.G., 2010. "Using the dual approach of FAO-56 for partitioning ET into soil and plant components for olive orchards in a semi-arid region," Agricultural Water Management, Elsevier, vol. 97(11), pages 1769-1778, November.
    7. Paredes, Paula & López-Urrea, Ramón & Martínez-Romero, Ángel & Petry, Mirta & Cameira, Maria do Rosário & Montoya, Francisco & Salman, Maher & Pereira, Luis S., 2025. "Estimating the lengths of crop growth stages to define the crop coefficient curves using growing degree days (GDD): Application of the revised FAO56 guidelines," Agricultural Water Management, Elsevier, vol. 319(C).
    8. Ma, Xiaochi & Han, Feng & Wu, Jinggui & Ma, Yan & Jacoby, Pete W., 2023. "Optimizing crop water productivity and altering root distribution of Chardonnay grapevine (Vitis vinifera L.) in a silt loam soil through direct root-zone deficit irrigation," Agricultural Water Management, Elsevier, vol. 277(C).
    9. Tian, Xin & Dong, Jianzhi & Jin, Shuangyan & He, Hai & Yin, Hao & Chen, Xi, 2023. "Climate change impacts on regional agricultural irrigation water use in semi-arid environments," Agricultural Water Management, Elsevier, vol. 281(C).
    10. Zanotelli, Damiano & Montagnani, Leonardo & Andreotti, Carlo & Tagliavini, Massimo, 2019. "Evapotranspiration and crop coefficient patterns of an apple orchard in a sub-humid environment," Agricultural Water Management, Elsevier, vol. 226(C).
    11. Rallo, G. & Paço, T.A. & Paredes, P. & Puig-Sirera, À. & Massai, R. & Provenzano, G. & Pereira, L.S., 2021. "Updated single and dual crop coefficients for tree and vine fruit crops," Agricultural Water Management, Elsevier, vol. 250(C).
    12. Paredes, Paula & Pereira, Luis S. & Rodrigues, Gonçalo C. & Botelho, Nuno & Torres, Maria Odete, 2017. "Using the FAO dual crop coefficient approach to model water use and productivity of processing pea (Pisum sativum L.) as influenced by irrigation strategies," Agricultural Water Management, Elsevier, vol. 189(C), pages 5-18.
    13. Yang, Chenyao & Menz, Christoph & Fraga, Helder & Costafreda-Aumedes, Sergi & Leolini, Luisa & Ramos, Maria Concepción & Molitor, Daniel & van Leeuwen, Cornelis & Santos, João A., 2022. "Assessing the grapevine crop water stress indicator over the flowering-veraison phase and the potential yield lose rate in important European wine regions," Agricultural Water Management, Elsevier, vol. 261(C).
    14. Liu, Yujie & Luo, Yi, 2010. "A consolidated evaluation of the FAO-56 dual crop coefficient approach using the lysimeter data in the North China Plain," Agricultural Water Management, Elsevier, vol. 97(1), pages 31-40, January.
    15. Cancela, J.J. & Fandiño, M. & Rey, B.J. & Martínez, E.M., 2015. "Automatic irrigation system based on dual crop coefficient, soil and plant water status for Vitis vinifera (cv Godello and cv Mencía)," Agricultural Water Management, Elsevier, vol. 151(C), pages 52-63.
    16. Zhang, Yanqun & Kang, Shaozhong & Ward, Eric J. & Ding, Risheng & Zhang, Xin & Zheng, Rui, 2011. "Evapotranspiration components determined by sap flow and microlysimetry techniques of a vineyard in northwest China: Dynamics and influential factors," Agricultural Water Management, Elsevier, vol. 98(8), pages 1207-1214, May.
    17. Qiu, Rangjian & Du, Taisheng & Kang, Shaozhong & Chen, Renqiang & Wu, Laosheng, 2015. "Assessing the SIMDualKc model for estimating evapotranspiration of hot pepper grown in a solar greenhouse in Northwest China," Agricultural Systems, Elsevier, vol. 138(C), pages 1-9.
    18. Yang, Pengju & Hu, Hongchang & Tian, Fuqiang & Zhang, Zhi & Dai, Chao, 2016. "Crop coefficient for cotton under plastic mulch and drip irrigation based on eddy covariance observation in an arid area of northwestern China," Agricultural Water Management, Elsevier, vol. 171(C), pages 21-30.
    19. Phogat, V. & Skewes, M.A. & McCarthy, M.G. & Cox, J.W. & Šimůnek, J. & Petrie, P.R., 2017. "Evaluation of crop coefficients, water productivity, and water balance components for wine grapes irrigated at different deficit levels by a sub-surface drip," Agricultural Water Management, Elsevier, vol. 180(PA), pages 22-34.
    20. Girona, J. & Mata, M. & Marsal, J., 2005. "Regulated deficit irrigation during the kernel-filling period and optimal irrigation rates in almond," Agricultural Water Management, Elsevier, vol. 75(2), pages 152-167, July.
    21. Munitz, Sarel & Schwartz, Amnon & Netzer, Yishai, 2019. "Water consumption, crop coefficient and leaf area relations of a Vitis vinifera cv. 'Cabernet Sauvignon' vineyard," Agricultural Water Management, Elsevier, vol. 219(C), pages 86-94.
    22. Teixeira, A.H. de C. & Bastiaanssen, W.G.M. & Bassoi, L.H., 2007. "Crop water parameters of irrigated wine and table grapes to support water productivity analysis in the Sao Francisco river basin, Brazil," Agricultural Water Management, Elsevier, vol. 94(1-3), pages 31-42, December.
    23. Katimbo, Abia & Rudnick, Daran R. & DeJonge, Kendall C. & Lo, Tsz Him & Qiao, Xin & Franz, Trenton E. & Nakabuye, Hope Njuki & Duan, Jiaming, 2022. "Crop water stress index computation approaches and their sensitivity to soil water dynamics," Agricultural Water Management, Elsevier, vol. 266(C).
    24. Vinod Phogat & Tim Pitt & Paul Petrie & Jirka Šimůnek & Michael Cutting, 2023. "Optimization of Irrigation of Wine Grapes with Brackish Water for Managing Soil Salinization," Land, MDPI, vol. 12(10), pages 1-29, October.
    25. Er-Raki, S. & Rodriguez, J.C. & Garatuza-Payan, J. & Watts, C.J. & Chehbouni, A., 2013. "Determination of crop evapotranspiration of table grapes in a semi-arid region of Northwest Mexico using multi-spectral vegetation index," Agricultural Water Management, Elsevier, vol. 122(C), pages 12-19.
    26. Zhao, Peng & Kang, Shaozhong & Li, Sien & Ding, Risheng & Tong, Ling & Du, Taisheng, 2018. "Seasonal variations in vineyard ET partitioning and dual crop coefficients correlate with canopy development and surface soil moisture," Agricultural Water Management, Elsevier, vol. 197(C), pages 19-33.
    27. Williams, Larry E. & Levin, Alexander D. & Fidelibus, Matthew W., 2022. "Crop coefficients (Kc) developed from canopy shaded area in California vineyards," Agricultural Water Management, Elsevier, vol. 271(C).
    28. Costa, J.M. & Vaz, M. & Escalona, J. & Egipto, R. & Lopes, C. & Medrano, H. & Chaves, M.M., 2016. "Modern viticulture in southern Europe: Vulnerabilities and strategies for adaptation to water scarcity," Agricultural Water Management, Elsevier, vol. 164(P1), pages 5-18.
    29. Ramírez-Cuesta, J.M. & Intrigliolo, D.S. & Lorite, I.J. & Moreno, M.A. & Vanella, D. & Ballesteros, R. & Hernández-López, D. & Buesa, I., 2023. "Determining grapevine water use under different sustainable agronomic practices using METRIC-UAV surface energy balance model," Agricultural Water Management, Elsevier, vol. 281(C).
    30. Allen, Richard G. & Pereira, Luis S. & Howell, Terry A. & Jensen, Marvin E., 2011. "Evapotranspiration information reporting: I. Factors governing measurement accuracy," Agricultural Water Management, Elsevier, vol. 98(6), pages 899-920, April.
    31. Khader Atroosh & Abdul Wahed Mukred & Ahmed Moustafa, 2013. "Water Requirement of Grape (Vitis vinifera) in the Northern Highlands of Yemen," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 5(4), pages 136-136, March.
    32. Widmoser, Peter, 2009. "A discussion on and alternative to the Penman-Monteith equation," Agricultural Water Management, Elsevier, vol. 96(4), pages 711-721, April.
    33. Laluet, Pierre & Olivera-Guerra, Luis Enrique & Altés, Víctor & Paolini, Giovanni & Ouaadi, Nadia & Rivalland, Vincent & Jarlan, Lionel & Villar, Josep Maria & Merlin, Olivier, 2024. "Retrieving the irrigation actually applied at district scale: Assimilating high-resolution Sentinel-1-derived soil moisture data into a FAO-56-based model," Agricultural Water Management, Elsevier, vol. 293(C).
    34. Wang, Shangtao & Zhu, Gaofeng & Xia, Dunsheng & Ma, Jinzhu & Han, Tuo & Ma, Ting & Zhang, Kun & Shang, Shasha, 2019. "The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China," Agricultural Water Management, Elsevier, vol. 212(C), pages 388-398.
    35. Er-Raki, S. & Chehbouni, A. & Guemouria, N. & Duchemin, B. & Ezzahar, J. & Hadria, R., 2007. "Combining FAO-56 model and ground-based remote sensing to estimate water consumptions of wheat crops in a semi-arid region," Agricultural Water Management, Elsevier, vol. 87(1), pages 41-54, January.
    36. Amayreh, Jumah & Al-Abed, Nassim, 2005. "Developing crop coefficients for field-grown tomato (Lycopersicon esculentum Mill.) under drip irrigation with black plastic mulch," Agricultural Water Management, Elsevier, vol. 73(3), pages 247-254, May.
    37. Pereira, L.S. & Paredes, P. & Jovanovic, N., 2020. "Soil water balance models for determining crop water and irrigation requirements and irrigation scheduling focusing on the FAO56 method and the dual Kc approach," Agricultural Water Management, Elsevier, vol. 241(C).
    38. Phogat, V. & Šimůnek, J. & Skewes, M.A. & Cox, J.W. & McCarthy, M.G., 2016. "Improving the estimation of evaporation by the FAO-56 dual crop coefficient approach under subsurface drip irrigation," Agricultural Water Management, Elsevier, vol. 178(C), pages 189-200.
    39. Romero, Pascual & Botía, Pablo & Navarro, Josefa María, 2018. "Selecting rootstocks to improve vine performance and vineyard sustainability in deficit irrigated Monastrell grapevines under semiarid conditions," Agricultural Water Management, Elsevier, vol. 209(C), pages 73-93.
    40. Volschenk, Theresa, 2017. "Evapotranspiration and crop coefficients of Golden Delicious/M793 apple trees in the Koue Bokkeveld," Agricultural Water Management, Elsevier, vol. 194(C), pages 184-191.
    41. Silva, Simão P. & Valín, M. Isabel & Mendes, Susana & Araujo-Paredes, Claúdio & Cancela, Javier J., 2024. "Water productivity in Vitis vinifera L. cv. Alvarinho using dual crop coefficient approach," Agricultural Water Management, Elsevier, vol. 303(C).
    42. Romero, Pascual & Navarro, Josefa María & Ordaz, Pablo Botía, 2022. "Towards a sustainable viticulture: The combination of deficit irrigation strategies and agroecological practices in Mediterranean vineyards. A review and update," Agricultural Water Management, Elsevier, vol. 259(C).
    43. Valentín, Francisco & Sánchez, Juan Manuel & Martínez-Moreno, Alejandro & Intrigliolo, Diego S. & Buesa, Ignacio & López-Urrea, Ramón, 2023. "Using on-the-ground surface energy balance to monitor vine water status and evapotranspiration under deficit irrigation and rainfed conditions," Agricultural Water Management, Elsevier, vol. 281(C).
    44. Ohana-Levi, Noa & Ben-Gal, Alon & Munitz, Sarel & Netzer, Yishai, 2022. "Grapevine crop evapotranspiration and crop coefficient forecasting using linear and non-linear multiple regression models," Agricultural Water Management, Elsevier, vol. 262(C).
    45. Pereira, L.S. & Paredes, P. & Melton, F. & Johnson, L. & Mota, M. & Wang, T., 2021. "Prediction of crop coefficients from fraction of ground cover and height: Practical application to vegetable, field and fruit crops with focus on parameterization," Agricultural Water Management, Elsevier, vol. 252(C).
    46. Pereira, L.S. & Paredes, P. & Hunsaker, D.J. & López-Urrea, R. & Mohammadi Shad, Z., 2021. "Standard single and basal crop coefficients for field crops. Updates and advances to the FAO56 crop water requirements method," Agricultural Water Management, Elsevier, vol. 243(C).
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