Vegetative growth, yield, and crop water productivity response to different irrigation regimes in high density walnut orchards (Juglans regia L.) in a semi-arid environment in Argentina

Calvo, Franco Emmanuel; Trentacoste, Eduardo R.; Silvente, Sonia

doi:10.1016/j.agwat.2022.107969

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…The concentrations of malondialdehyde (MDA), proline (PRO), total soluble sugars (TSS), total phenol (FEN), and total flavonoid (FLA) did not show significant differences between irrigation regimes (Figure 1). Previously, we observed a low effect of the deficit irrigation regimes (T75 and T50) in terms of vegetative growth, productivity, and yield quality compared to the control (T100) [23]. These results could be related to the age of the walnut orchard at the start of the experiment.…”

Section: Biomarkers Of Water Deficit In Leaf Tissuementioning

confidence: 70%

Leaf Biochemical and Kernel Metabolite Profiles as Potential Biomarkers of Water Deficit in Walnut (Juglans regia L.) cv. Chandler

Calvo,

Silvente,

Trentacoste

2023

Sustainability

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Walnut cultivation is expanding into regions where water availability for irrigation is lower than crop evapotranspiration. However, information regarding the responses and adaptations of walnut trees to water deficit remains scarce. In this study, we applied three irrigation levels, 100%, 75%, and 50% of crop evapotranspiration (referred to as T100, T75, and T50, respectively), to Chandler walnut trees over two consecutive seasons. During the second season, we evaluated leaf water-deficit biomarkers, including proline, malondialdehyde, soluble sugars, phenols, and flavonoids, using targeted spectrophotometry. Despite not finding significant differences in biomarker concentrations among the irrigation regimes, we observed variations between different collection times (sprouting, endocarp hardening, and maturity). Furthermore, we assessed the kernel metabolome using untargeted gas chromatography–mass spectrometry, profiling seventy-one metabolites across all samples. Notably, forty-one of these metabolites were identified as members of distinct groups, comprising carbohydrates (n = 11), fatty acids (n = 11), organic acids (n = 9), and amino acids (n = 5). Linear mixed models showed no significant differences between the irrigation regimes. However, in the T50 treatment, multivariate analysis (PCA) revealed a higher concentration of osmotic adjustment metabolites, which are potentially associated with protecting oil biosynthesis under high-temperature and water deficit conditions.

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Section: Biomarkers Of Water Deficit In Leaf Tissuementioning

confidence: 70%

Leaf Biochemical and Kernel Metabolite Profiles as Potential Biomarkers of Water Deficit in Walnut (Juglans regia L.) cv. Chandler

Calvo,

Silvente,

Trentacoste

2023

Sustainability

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“…Equation ( 14) was not applicable because the value of the mean leaf resistance (r l ) is not available in the literature for hazelnut orchards. Due to these missing data, in this study, assuming a similarity in the water sensibility behaviors of hazelnut and walnut orchards [32], the F r value of walnuts reported in Table 2 of [15] was used (F r = 0.90). The values of the mean tree height measured using the UAV surveys [18,19] were used for the evaluation of K cb full using Equation (13).…”

Section: Application Of the Allen And Pereira Methods [15]mentioning

confidence: 99%

Assessment of the Midseason Crop Coefficient for the Evaluation of the Water Demand of Young, Grafted Hazelnut Trees in High-Density Orchards

Vinci

Traini

Portarena

et al. 2023

Water

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Knowledge of crop water requirements is important in supporting irrigation management. Evapotranspiration (ET) is commonly measured with a variety of instruments and field procedures, but it is also typically computed or modeled using the FAO56 or FAO66 methods. The adoption of this approach requires the assessment of the crop coefficients. Some data are available for own-rooted hazelnut trees, but no data have been reported for young and grafted hazelnut trees. There is a need to update nut–tree crop coefficients, especially considering modern cultivars and production systems, such as those with a high tree density per ha−1. In this paper, the FAO66 crop transpiration coefficient Kc,Tr and the FAO56 dual crop coefficients Kcb were assessed for the mid-growing season of a young grafted hazelnut orchard. The field data were acquired manually and using UAV. The coefficients were determined for three tree densities and for two growing seasons. The crop coefficients, obtained using the FAO66 method, agreed with the literature data referring to low densities, while the FAO56 method could allow us to better define the crop coefficients for high-density hazelnut orchards.

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Influence of irrigation regime and seasonal temperatures on nut quality and the oil fatty acid profile of walnuts (Juglans regia L.)

Calvo

Trentacoste

Silvente

2023

Journal of the Saudi Society of Agricultural Sciences

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Vegetative growth, yield, and crop water productivity response to different irrigation regimes in high density walnut orchards (Juglans regia L.) in a semi-arid environment in Argentina

Cited by 6 publications

References 16 publications

Leaf Biochemical and Kernel Metabolite Profiles as Potential Biomarkers of Water Deficit in Walnut (Juglans regia L.) cv. Chandler

Leaf Biochemical and Kernel Metabolite Profiles as Potential Biomarkers of Water Deficit in Walnut (Juglans regia L.) cv. Chandler

Assessment of the Midseason Crop Coefficient for the Evaluation of the Water Demand of Young, Grafted Hazelnut Trees in High-Density Orchards

Influence of irrigation regime and seasonal temperatures on nut quality and the oil fatty acid profile of walnuts (Juglans regia L.)

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