Response of Tomato Quality Parameters to Water Deficit Under Soil Salinity and Simulation Based on Stem Water Potential

Horticulturae, Journal Year: 2025, Volume and Issue: 11(2), P. 114 - 114

Published: Jan. 22, 2025

Soil salinity and water deficit are important challenges for sustainable agricultural development in arid semi-arid regions. While soil deficits may result lower crop yields, they improve quality. The quantitative relationship between water–salt stress, yield, quality is key to achieving stable yield enhanced through the coordinated regulation of salt. interaction irrigation on tomato needs be further understood, model simulating response under simulated optimized. In this study, a two-year experiment was conducted northwest China consisting combinations three levels (0 g, 3 5 g mixed salt added 1000 air-dried soil, respectively) four regimes relative field capacity (θf) (W0, W1, W2, W3 refer 95% θf, 80% 70% 60% θf as upper limit content, respectively). responses plant stem potential (φ), fruit osmotic (φπ), Na+ fresh weight, total soluble solids (TSS), lycopene (Ly), sugars content (SSC), color index (CI) degree stage were analyzed salinity. results show that both significantly reduced φ, but there no significant interaction. TSS, SSC, CI all affected by salinity, deficit, Fruit Ly, strongly correlated with straight lines regression each φ content. increased fruit, effect fruit. A functional simulate developed based parameters accumulation compound deficit. validation function effectively simulates combined effects providing theoretical basis management

Language: Английский

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Continuous Plant-Based and Remote Sensing for Determination of Fruit Tree Water Status

Horticulturae, Journal Year: 2024, Volume and Issue: 10(5), P. 516 - 516

Published: May 16, 2024

Climate change poses significant challenges to agricultural productivity, making the efficient management of water resources essential for sustainable crop production. The assessment plant status is crucial understanding physiological responses stress and optimizing practices in agriculture. Proximal remote sensing techniques have emerged as powerful tools non-destructive, efficient, spatially extensive monitoring status. This review aims examine recent advancements proximal methodologies utilized assessing status, consumption, irrigation needs fruit tree crops. Several proved useful continuous estimation but strong limitations terms spatial variability. On contrary, technologies, although less precise estimates, can easily cover from medium large areas with drone or satellite images. integration would definitely improve assessment, resulting higher accuracy by integrating temporal scales. paper consists three parts: first part covers current plant-based tools, second techniques, third includes an update on combined use two methodologies.

Language: Английский

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Combining thermal imaging and soil water content sensors to assess tree water status in pear trees

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: June 6, 2023

Volumetric soil water content is commonly used for irrigation management in fruit trees. By integrating direct information on tree status into measurements of content, we can improve detection stress and scheduling. Thermal-based indicators be an alternative to traditional midday stem potential stomatal conductance pear trees (Pyrus communis L.). These are easy, quick, cost-effective. The two cultivars 'D'Anjou' 'Bartlett' submitted regulated deficit was measured regularly a orchard Rock Island, WA (USA) seasons, 2021 2022. assessments were compared the canopy temperature (Tc), difference between air (Tc-Ta) crop index (CWSI). Trees under had lower but higher Tc, Tc-Ta, CWSI. Tc not robust method assess since it strongly related (R = 0.99). However, Tc-Ta CWSI greater than 0°C or 0.5, respectively, less dependent environmental conditions when deficits (midday values< -1.2 MPa). Moreover, values 2°C 0.8 occurred close -1.5 MPa 200 mmol m-2s-1. Soil (SWC) first indicator detecting applied, however, as thermal-based indicators. Thus, relation studied with followed order: > SWC Tc. A multiple regression analysis proposed that combines both indices overcome limitations individual use each indicator.

Language: Английский

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Trunk Water Potential Measured with Microtensiometers for Managing Water Stress in “Gala” Apple Trees

Plants, Journal Year: 2023, Volume and Issue: 12(9), P. 1912 - 1912

Published: May 8, 2023

The weather variations around the world are already having a profound impact on agricultural production. This impacts apple production and quality of product. Through precision, growers attempt to optimize both yield fruit size quality. Two experiments were conducted using field-grown "Gala" trees in Geneva, NY, USA, 2021 2022. Mature (Malus × domestica Borkh. cv. Ultima "Gala") grafted onto G.11 rootstock planted 2015 used for experiment. Our goal was establish relationship between stem water potential (Ψtrunk), which continuously measured microtensiometers, growth rate fruits, dendrometers throughout growing season. second objective develop thresholds Ψtrunk determine when irrigate trees. economic different irrigation regimes evaluated. Three compared (full irrigation, rainfed rain exclusion induce stress). Trees subjected rain-exclusion treatment not irrigated during whole season, except spring (April May; 126 mm 100 2022); that is, these did receive June, July, August half September. received only rainwater (515 382 2022). fully but also by drip 565 Moreover, all same amount out season autumn winter (245 283 microtensiometer sensors detected differences among our treatments over entire In years, experimental with trunk cross-section area (TCSA) selected (23-25 cm-2 TCSA), crop load adjusted 7 fruits·cm-2 TCSA 8.5 However, showed highest rates final weight (157 g 70 mm), followed (132 66 while had lowest (107 61 mm). hourly shrinking swelling (mm·h-1) (bar) microtensiometers correlated. We developed logistic model correlate (g·h-1), suggested critical value -9.7 bars Ψtrunk, above there no negative effects due stress relatively humid conditions New York State. A support vector machine multiple regression predict daytime radiation VPD as input variables. Yield converted value, managing dry periods improved climate

Language: Английский

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Relating microtensiometer-based trunk water potential with sap flow, canopy temperature, and trunk and fruit diameter variations for irrigated ‘Honeycrisp’ apple

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: May 24, 2024

Instrumentation plays a key role in modern horticulture. Thus, the microtensiomenter, new plant-based sensor that continuously monitors trunk water potential (Ψ ) can help irrigation management decisions. To compare response of Ψ with other continuous tree status indicators such as sap flow rate, difference between canopy and air temperatures, or variations fruit diameter, all sensors were installed 2022 commercial orchard ‘Honeycrisp’ apple trees M.9 rootstocks Washinton State (USA). From daily evolution , five considered: predawn, midday, minimum, mean, range (the maximum minimum values). The was most linked to shrinkage (MDS; R 2 = 0.42), canopy-to-air temperature (Tc-Ta; 0.32), rate (SF; 0.30). On hand, relative growth (FRGR) more related (R 0.33) mean 0.32) than . All derived from identified changes after each event had low coefficients variation high sensitivity. These results encourage promising candidate for monitoring status, however, research is needed better relate these measures widely studied identify good combinations threshold values.

Language: Английский

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Continuous Stem Water Potential Measurements of a Diffuse‐Porous Tree Species Offer New Insights Into Tree Water Relations

Ecohydrology, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 1, 2025

ABSTRACT Water potential is a crucial parameter for assessing tree water status and hydraulic strategies. However, methods measuring potential, such as the Scholander pressure chamber, are destructive, discontinuous difficult to perform in tall forests. Consequently, important dynamics potentials, particularly during short‐term drought, capture. Recent advancements have introduced low‐maintenance sensors capable of continuous, high‐resolution stem potentials. We evaluated these temperate, diffuse‐porous species ( Carpinus betulus ) over growing season marked by dry‐down periods heat. Measurements leaf sap flow environmental factors (air temperature, vapour deficit soil content) were conducted. Midday potentials C. reached minimum values −3.39 ± 0.10 MPa exhibited pronounced seasonal fluctuations, mirroring changes conditions flow. Stem correlated well with Scholander‐type measurements predawn R 2 = 0.98) but demonstrated an offset absolute midday 0.71) diurnal measurements. Minimum maximum expressed time lag showed distinct hysteresis. In this first assessment, agreement measurements, parameters suggests tested yield reliable data, especially predawn, need further validation conditions. If applicable other species, could significantly advance our understanding relations their role forest drought responses.

Language: Английский

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Interannual carry-over effects of severe drought on field-grown young pear trees

Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 367, P. 110502 - 110502

Published: March 29, 2025

Language: Английский

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Apple trees’ behavior to a single-season megadrought stress

Irrigation Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Language: Английский

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Microtensiometer-based trunk water potential as a plant water status indicator in kiwifruit under different soil water availability

Irrigation Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 3, 2025

Language: Английский

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A stem water potential model to manage irrigation of apple trees

Acta Horticulturae, Journal Year: 2025, Volume and Issue: 1425, P. 33 - 38

Published: March 1, 2025

Language: Английский

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