Estimation of evapotranspiration and crop coefficient of drip-irrigated orange trees under a semi-arid climate

Jafari, Mohammad Reza; Kamali, Hamidreza; Keshavarz, Ali; Momeni, Akbar

doi:10.1016/j.agwat.2021.106769

Cited by 22 publications

(16 citation statements)

References 47 publications

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“…More notorious differences were observed when comparing our values with the K cb mid of 0.50 reported by Er-Raki et al [31] for 15-year-old orange trees with an f c of 0.30, or the K cb mid of 0.80 reported by Taylor et al [26] for 14-year-old orange trees having an f c of 0.88. The calibrated K cb mid value for 18-20 years old clementine trees (E2), which averaged 0.64 for an f c = 0.75, was lower than the K cb mid of 0.75-0.78 reported by Jafari et al [29] for 25-year-old orange trees having an f c of 0.85. Differences in K cb result from the impacts of f c and h as used in the A&P approach described in Section 2.2.…”

Section: Parametrization Of the Simdualkc Modelcontrasting

confidence: 61%

Searching for Sustainable-Irrigation Issues of Clementine Orchards in the Syrian Akkar Plain: Effects of Irrigation Method and Canopy Size on Crop Coefficients, Transpiration, and Water Use with SIMDualKc Model

Darouich

Karfoul

Ramos

et al. 2022

Water

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Citrus is one of the most valuable crops in Syria, with the largest production areas in the Tartus and Latakia provinces. Water-saving policies have been adopted to modernize the irrigation systems and increase water productivity. Following dedicated research, this study aimed to evaluate the water balance in clementine trees irrigated with diverse methods and schedules using the SIMDualKc software model. Two experiments are reported: one with 10–14 years old trees irrigated with different methods (2007−2011) and the other with the same trees but now 18−20 years old, irrigated with different schedules (2015−2019). The SIMDualKc model successfully simulated the soil water contents measured in the various field plots, with root mean square error values lower than 0.004 m3 m−3 and modeling efficiencies up to 0.83. The model-calibrated standard basal crop coefficients (Kcb) were approximately constant throughout all growing stages, assuming values of 0.54−0.55 for the mature trees having smaller height (h) and fraction of ground cover (fc), and 0.64 for older trees with larger canopies, i.e., larger h and fc. With drip irrigation, single Kc had a higher value (1.14) at the end, non-growing, and initial stages, and a lower value (0.75–0.76) during mid-season (Kc mid), because precipitation was lesser then, contributing less to soil evaporation. On the other hand, Kc values were nearly constant with micro-sprinkler and surface irrigation techniques because the ground was fully wetted. The Kcb values derived from the fraction of ground cover and height (A&P approach) were similar to those obtained from the model, thus showing that the A&P approach represents a practical alternative to estimate Kcb in the practice of irrigation management. The soil water balance further revealed a large weight of the terms corresponding to the non-beneficial water consumption and non-consumptive water use when the fraction wetted was large and the application efficiencies were low. These terms were reduced, namely, evaporation losses when drip irrigation was used. This study, thus, provides a valuable tool for improving the irrigation management, water saving, and water productivity of Syrian citrus production systems.

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Section: Parametrization Of the Simdualkc Modelcontrasting

confidence: 61%

Searching for Sustainable-Irrigation Issues of Clementine Orchards in the Syrian Akkar Plain: Effects of Irrigation Method and Canopy Size on Crop Coefficients, Transpiration, and Water Use with SIMDualKc Model

Darouich

Karfoul

Ramos

et al. 2022

Water

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“…In the context of modeling soil water balance, accurate estimates of reference evapotranspiration are required [232,233], which can be obtained using satellite-sensed solar radiation in areas where air temperature is the sole local weather variable available [234]. Moreover, crop coefficients for grapevine can be estimated accurately by using plant height and the fraction of ground cover [235], improving the estimations of vineyard water needs, as made in other woody crops such as orange trees [236]. Another approach is the adaptation of existing models to grapevine, which has given promising results [237].…”

Section: Modelsmentioning

confidence: 99%

Optimization of Vineyard Water Management: Challenges, Strategies, and Perspectives

Mirás-Avalos

Araujo

2021

Water

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Water availability is endangering the production, quality, and economic viability of growing wine grapes worldwide. Climate change projections reveal warming and drying trends for the upcoming decades, constraining the sustainability of viticulture. In this context, a great research effort over the last years has been devoted to understanding the effects of water stress on grapevine performance. Moreover, irrigation scheduling and other management practices have been tested in order to alleviate the deleterious effects of water stress on wine production. The current manuscript provides a comprehensive overview of the advances in the research on optimizing water management in vineyards, including the use of novel technologies (modeling, remote sensing). In addition, methods for assessing vine water status are summarized. Moreover, the manuscript will focus on the interactions between grapevine water status and biotic stressors. Finally, future perspectives for research are provided. These include the performance of multifactorial studies accounting for the interrelations between water availability and other stressors, the development of a cost-effective and easy-to-use tool for assessing vine water status, and the study of less-known cultivars under different soil and climate conditions.

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“…Moisture regimes were maintained to avoid any stress during the economic stages of fruit phenology. Jafari et al (2021) observed the crop coefficient in orange trees in the range of 0.65 to 0.91 under semi-arid conditions with reference evapotranspiration (ET0) ranging from 2.55 to 9.0 mm day-1. Cheng et al (2021) reported nonsignificant fruit yields between deficit and alternate partial root zone drying systems and significant with full irrigation.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Determinants of Water Use Efficiency in Mango

Adak¹,

Singh²,

Babu³

2022

JNRCM

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Water use efficiency (WUE) is a dependent factor in orchard ecosystems. Enhancing WUE in any agroecosystem is the national priority for achieving the goal of more fruit per drop of applied water. Farmers' practice of full irrigation in the basin by flooding reduces the scope of better WUE. Innovative approaches like deficit irrigation certainly improve WUE in mango, across climates. Statistical analysis and histographic diagrams showed maximum frequency distribution of pan evaporation of 103% in class intervals of 3.14 to 5.97 mm day -1 followed by 0.3 to 3.13 mm day -1 (99%) under subtropical conditions. The histographic distribution of reference evapotranspiration (ET0) indicated the highest frequency distribution of 96% in 4.98 to 6.32 mm day-1 and 83% in 0.93 to 2.27 mm day-1. Statistical histographic distribution of mango (cv. Dashehari) yield under subtropical climatic conditions indicated 85.4 to 108.04 kg fruits tree -1 at a 9% frequency level. The highest WUE of 20.43 to 23.96 kg fruits m -3 of water applied was obtained under a 6% frequency distribution. The deficit irrigation strategy was found to be the most appropriate for optimum yields of mango under subtropical conditions.

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Estimation of evapotranspiration and crop coefficient of drip-irrigated orange trees under a semi-arid climate

Cited by 22 publications

References 47 publications

Searching for Sustainable-Irrigation Issues of Clementine Orchards in the Syrian Akkar Plain: Effects of Irrigation Method and Canopy Size on Crop Coefficients, Transpiration, and Water Use with SIMDualKc Model

Searching for Sustainable-Irrigation Issues of Clementine Orchards in the Syrian Akkar Plain: Effects of Irrigation Method and Canopy Size on Crop Coefficients, Transpiration, and Water Use with SIMDualKc Model

Optimization of Vineyard Water Management: Challenges, Strategies, and Perspectives

Optimizing the Determinants of Water Use Efficiency in Mango

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