Effect of regulated deficit irrigation (RDI) on the production and quality of pear Triunfo de Viena variety under tropical conditions

Vélez-Sánchez, Javier Enrique; Balaguera-López, Helber Enrique; Álvarez-Herrera, Javier Giovanni

doi:10.1016/j.scienta.2020.109880

Cited by 13 publications

(7 citation statements)

References 26 publications

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“…For the treatments with RDI, production and distribution measured by calibers for the two years of evaluation were similar to those found for the treatments with the application of 100% of the ETc. This confirmed the results obtained in citrus [12,13] and pear [17,31,36], where the period in which the deficit was imposed was not very sensitive to water stress. However, there were significant differences in the number of fruits between years, which occurred in category I with 48% ETc and in category III with all treatments.…”

Section: Production Parameterssupporting

confidence: 90%

“…Results for the variable production per tree showed a very small and non-significant reduction in yield, compared to the benefits obtained by saving water that could be used for other crops that are more in need of this resource (2), and there was only a significant difference between years in the control (100%) and in the lowest ETc treatment. In addition, production depends on the season, climatic conditions, and the intensity and duration of water stress applied, as has been reported for the 'Triunfo de Viena' pear tree [17,32], as well as for 'Jujube' [34], 'Conference' pear [28] and Clingstone peach [6], where the reductions in water supply to the crop did not cause a decrease in production.…”

Section: Production Parametersmentioning

confidence: 77%

“…The pear fruit is of great importance in human nutrition due to its antioxidant capacity and high amounts of phenolic compounds and flavonoids that help increase the defenses of the immune system and protect against numerous chronic diseases [17]. In Colombia, 'Triunfo de Viena' is the most important pear variety in the Cundinamarca and Boyacá regions, where it is grown at altitudes between 2400 and 3000 m a.s.l., where the plants can accumulate 500-600 chilling hours to break their rest [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Vélez-Sánchez,

Casierra-Posada,

Fischer

2023

Sustainability

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The irrigation of crops represents 70% of the world’s water use. For crops grown in high-altitude tropical climates, due to the decrease in rainfall with increasing altitude, along with the effects of global warming, it is necessary to propose alternatives for sustainable fruit production with reduced water consumption. This study was carried out in Sesquilé, Colombia (South America), at an altitude of 2595 m a.s.l. for two successive years with pear trees, var. Triunfo de Viena. The objective of this work was to determine the effect of regulated deficit irrigation (RDI) on the absolute and relative growth rates of the equatorial diameter of the fruits, the fresh and dry weights, the number of fruits, the yield per tree and the water potential of the fruits. In 2014, during the rapid growth phase of the fruit, one group of plants was irrigated at 100% of the crop evapotranspiration (ETc) (control), another at 74% and a third group at 60%. In 2015, the three groups were irrigated at 100%, 48% and 27% of the ETc. The use of RDI did not significantly affect the growth of the fruits. This study showed that the ‘Triunfo de Viena’ pear tree not only has sufficient adaptive reserves, but also has good ecological plasticity under water stress conditions in high-altitude tropical climates. In cases where water is a limiting factor for pear tree production, RDI can obtain production rates similar to those of a regularly irrigated crop, as long as this technique is used and implemented in phenological states of low sensitivity to water stress without exceeding the tolerance limits of the plants to the stressor.

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Section: Production Parameterssupporting

confidence: 90%

Section: Production Parametersmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

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Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Vélez-Sánchez,

Casierra-Posada,

Fischer

2023

Sustainability

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“…In pear trees, values below −1.1 MPa indicate water deficit conditions [46], values below −2.8 MPa induce cropping deficiencies the next year [47], and −3.5 MPa was suggested as the threshold value for vascular embolisms to develop [48]. Ψ stem values reported here (Figure 2) were more negative than those reported in deficit irrigation experiments in pear trees under tropical climates [49] but similar to those reported under Mediterranean [50] and Oceanic climates [51]. The days selected to evaluate Ψ stem measured using both MT and PC represented a wide range of conditions for the water status of trees.…”

Section: Discussionmentioning

confidence: 49%

Microtensiometers Accurately Measure Stem Water Potential in Woody Perennials

Blanco

Kalcsits

2021

Plants

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Stem water potential (Ψstem) is considered to be the standard measure of plant water status. However, it is measured with the pressure chamber (PC), an equipment that can neither provide continuous information nor be automated, limiting its use. Recent developments of microtensiometers (MT; FloraPulse sensors), which can continuously measure water tension in woody tissue of the trunk of the tree, can potentially highlight the dynamic nature of plant water relations. Thus, this study aimed to validate and assess the usefulness of the MT by comparing the Ψstem provided by MT with those same measurements from the PC. Here, two irrigation treatments (a control and a deficit treatment) were applied in a pear (Pyrus communis L.) orchard in Washington State (USA) to capture the full range of water potentials in this environment. Discrete measurements of leaf gas exchange, canopy temperature and Ψstem measured with PC and MT were made every two hours for four days from dawn to sunset. There were strong linear relationships between the Ψstem-MT and Ψstem-PC (R2 > 0.8) and with vapor pressure deficit (R2 > 0.7). However, Ψstem-MT was more variable and lower than Ψstem-PC when Ψstem-MT was below −1.5 MPa, especially during the evening. Minimum Ψstem-MT occurred later in the afternoon compared to Ψstem-PC. Ψstem showed similar sensitivity and coefficients of variation for both PC and MT acquired data. Overall, the promising results achieved indicated the potential for MT to be used to continuously assess tree water status.

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“…In highly-dense orchard plants like apples, peaches, and avocados, where the ratio between asexual and sexual reproduction development is crucial, regulated deficit irrigation (RDI) has been used (Blanco et al, 2019;Vélez-Sánchez et al, 2021). The basic principle of RDI is to withhold irrigation water in the highly vegetative growing stages while fruit development or grain filling is minimum (Blanco et al, 2019;Lurbe, 2013).…”

Section: Introductionmentioning

confidence: 99%

Regulated deficit irrigation (RDI) under citrus species production: A review

Appiah¹,

Li²,

Lan³

et al. 2021

J. Hortic. For.

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Regulated deficit irrigation (RDI) is considered among the best water-saving techniques forsupplementing Regulated water to fully achieve the water needs of the plant while maximizing water productivity with little or no substantial decrease in final produce compared to the conventional forms of irrigating crops. The aim of this paper is to review existing RDI approaches used in citrus production as well as plant-water stress indicators. Most of the approaches employed in citrus RDI scheduling require weather data for evapotranspiration calculations which is very technical, laborious and time consuming. Nonetheless, the time domain reflectometer (TDR) offers a simple way of scheduling RDI based on the soil-water status at any given time. This approach will help address the challenges in setting up on-farm synoptic stations to measure weather data to compute evapotranspiration or from using data from weather stations which might be different from the farm conditions. The pros and cons of all the approaches have been discussed and recommended that the TDR can be adopted as an alternative to schedule irrigation in citrus orchards to ensure that plants are supplied with adequate volume of water for maximum water use efficiency.

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Effect of regulated deficit irrigation (RDI) on the production and quality of pear Triunfo de Viena variety under tropical conditions

Cited by 13 publications

References 26 publications

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Effect of Regulated Deficit Irrigation (RDI) on the Growth and Development of Pear Fruit (Pyrus communis L.), var. Triunfo de Viena

Microtensiometers Accurately Measure Stem Water Potential in Woody Perennials

Regulated deficit irrigation (RDI) under citrus species production: A review

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