Fruit Yield and Quality of ‘Valencia’ Orange Trees under Long-Term Partial Rootzone Drying

Mossad, Amr; Farina, Vittorio; Bianco, Riccardo Lo

doi:10.3390/agronomy10020164

Cited by 24 publications

(9 citation statements)

References 58 publications

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“…due to water stress. Moreover improvements were reported by Mossad et al (2020) for oranges (Citrus sinensis L.), Romero et al (2016) for grapes (Vitis vinifera L.), Gonçalves et al (2020) for olives (Olea europea L.), Pérez et al (2016) for apricots (Prunus armeniaca L), Maatallah et al (2015) for plums (Prunus salicina L.), and Cano et al (2018) for pomegranates (Punica granatum L.).…”

Section: Impact Of Water Stress On Fruit Qualitymentioning

confidence: 98%

Deficit irrigation strategies for subtropical mango farming. A review

Zuazo

García-Tejero

Rodríguez

et al. 2021

Agron. Sustain. Dev.

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Mango (Mangifera indica L.) is broadly grown in tropical regions and can also be cultivated in irrigated subtropical semi-arid areas; however, water shortages are a serious problem in the latter region. Among biotic and abiotic factors, water supply is one of the most crucial elements that determine productivity. The allocation of water will be an ever-increasing source of pressure because of vast agricultural demands under changing climatic conditions. Although the mango is considered to be tolerant to drought, water stress during growing cycle can reduce productivity. Here, we review the recent progress in evaluating and augmenting mango water productivity. Developments in physiological and agronomic understanding that have led to a boost in water productivity are presented. In addition, this review deals with deficit irrigation strategies to elucidate the effects on mango yield, water use efficiency, and the response of physiological indicators to water stress. Our main findings were as follows: (1) Under a changing climate, traditional irrigation based on water balance will not be sustainable in the medium/long term; (2) deficit irrigation strategies applied to mango can save irrigation water by up to 40% and improve water use efficiency by up to 30%; and (3) there is valuable potential for further improvement owing to advanced knowledge in terms of the physiological response of mango to water stress, and there are good prospects within the current approaches if they are associated with specific environmental physiology. We concluded that under current medium-/long-term perspectives regarding available water resources, particularly in arid and semi-arid regions, there is an urgent demand for adaptive and water-saving strategies. Thus, it will be vital to redesign irrigation schemes in areas where water is scarce to adjust deficit irrigation strategies not only to save water, enhance water use efficiency, and maintain yield, but also to produce fruits with improved quality.

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Section: Impact Of Water Stress On Fruit Qualitymentioning

confidence: 98%

Deficit irrigation strategies for subtropical mango farming. A review

Zuazo

García-Tejero

Rodríguez

et al. 2021

Agron. Sustain. Dev.

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“…Compared to severe RDI with water supply of 35% of ETc, a moderate RDI with water supply of 50% ETc from mid-July to mid-September, can successfully be applied to 'Clementina de Nules', allowing a 15% water saving without any detrimental effect on tree performance or economic return [72]. The PRD strategy applied to orange trees with 50% ETc resulted in a significant water saving, with no negative effect on fruit yield, and was concluded to be sustainable for orange orchards [44][45][46]75]. Variety and rootstock genotypes are reported to play a significant role in tree response to water deficit [36,37].…”

Section: Effect Of Deficit Irrigation On Fruit Yieldmentioning

confidence: 99%

Response of Clementine Mandarin to Water-Saving Strategies under Water Scarcity Conditions

El-Otmani

Anouar

Azrof

et al. 2020

Water

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Water scarcity is the most constraining factor for crop production, especially in arid and semi-arid areas of Mediterranean countries such as Morocco. Within these conditions, different water-saving strategies using deficit irrigation (DI) were tested on two six-years old clementine varieties (‘Sidi Aissa’ and ‘Orogrande’). These DI strategies were applied during the second part of fruit growth and during fruit maturation and included: the control treatment (Cntl), in which the trees received 100% of crop evapotranspiration (ETc) for the entire irrigation season; regulated deficit irrigation (RDI), with an application of 75% of ETc (RDI-1); partial rootzone drying (PRD), with an alternating irrigation between the two root system halves for 3–4 (PRD-3/4) and 7 (PRD-7) days, with an application of 50% crop water requirements; and RDI-2, with an application of 50% of crop water needs during fruit maturation. The results indicate that the trees preferably absorb the water from the upper 0–30 cm-depth soil profile and that fruit drop was increased by PRD for ‘Sidi Aissa’, whereas RDI-1 had no effect on this parameter. The DI strategies had no effect on fruit drop for ‘Orogrande’. The PRD reduced fruit size, yield and fruit juice content, with the effect being more pronounced on ‘Sidi Aissa’. The RDI-1 had no effect on fruit yield for ‘Orogrande’ but reduced it for ‘Sidi Aissa’. RDI-2 had no effect on yield, fruit size or fruit juice content. The DIs tested increased water use efficiency and enhanced fruit maturation as a result of increased juice sugar content and reduced acidity. The PRD tends to increase salt accumulation in the rootzone. Overall, ‘Orogrande’ was less sensitive to water stress and was more water-use efficient, and, under the semi-arid conditions of the experimental zone, PRD should not be used on clementine.

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“…Irrigation strategies such as controlled deficit irrigation (CDI) and partial rootzone drying (PRD) have been evaluated in citrus, and in both cases, the results showed water saving but a significant decrease in yield and fruit quality [8]. In terms of the use of physical barriers to prevent water evapotranspiration, an example is the use of organic or plastic mulch over the soil to reduce water evaporation.…”

Section: Introductionmentioning

confidence: 99%

Response of Potted Citrus Trees Subjected to Water Deficit Irrigation with the Application of Superabsorbent Polyacrylamide Polymers

et al. 2022

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Searching for new strategies to mitigate the effects of low water availability for citrus production, a study was carried out on potted mandarin cv. W. Murcott, with the objective of evaluating the physiological and growth response of the plants to polyacrylamide gel application in the substrate in water restriction conditions. The following treatments were evaluated, T0 (control) with 100% ETc water replenishment, T1 with 50% ETc water replenishment, and T2 with 50% ETc water replenishment plus the application of polyacrylamide polymers to the substrate. Temperature and water volumetric content (ϴ: m3 m−3) were evaluated in the substrate. Plant water-status parameters such as stem water potential (SWP), stomatal conductance (gs), and chlorophyll fluorescence (Fv/Fm), as well as biomass, nutrients levels, and proline biosynthesis were measured in the plants in response to the treatments. The results showed that the substrate moisture for T2 was kept significantly higher than T0 and T1, despite receiving the same irrigation rate as T1 and a half of T0; however, this higher moisture availability in the substrate of T2 was not reflected in the plant’s water status or growth. On the contrary, the T2 plants showed responses such as lower total biomass, lower vegetative development, and lower root biomass, as well as a higher concentration of proline in the root. According to these results, it is concluded that polymers such as polyacrylamide sodium allow the retention of water in the substrate, but do not necessarily release that water for plants, probably because that moisture is kept in the hydrogel and not released to the substrate media or the roots, or if released, in this case, this occurs with an increase in the concentration of sodium available to the plants, which could lead the citrus crop to a worse situation of water and/or osmotic stress.

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Fruit Yield and Quality of ‘Valencia’ Orange Trees under Long-Term Partial Rootzone Drying

Cited by 24 publications

References 58 publications

Deficit irrigation strategies for subtropical mango farming. A review

Deficit irrigation strategies for subtropical mango farming. A review

Response of Clementine Mandarin to Water-Saving Strategies under Water Scarcity Conditions

Response of Potted Citrus Trees Subjected to Water Deficit Irrigation with the Application of Superabsorbent Polyacrylamide Polymers

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