Effect of Irrigation Regimes and Foliar Nutrition on Flower Development and Water Productivity of Olive (Olea europaea L. cv. ‘Shengeh’)

Tadayon, Mohammad Saeed; Hosseini, Seyed Mashaallah

doi:10.1007/s00344-022-10580-x

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…Drought could highly impair fruit set and subsequent lower yield due to the increased presence of imperfect flowers in olive. On the contrary, adequate irrigation during flower initiation and induction improved perfect flowers and, consequently, fruit yield in Shengeh cultivar of olive trees [87]. The reduction of fruit yield has been therefore associated with fruit moisture and irrigation level [88].…”

Section: Yield Parameters and Water Use Efficiencymentioning

confidence: 97%

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

et al. 2022

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Background Drought stress is among the most serious threats jeopardizing the economic yield of crop plants in Iran. In particular, in response to withholding irrigation, the reduction in performance and quality of a precious plant such as the olive tree is remarkable. Therefore, the selection of cultivars that are resistant or tolerant to drought has been recognized as one of the most effective long-term strategies for sustainably alleviating the adverse effects of this stress. In this view, our study evaluated the response of 8 olive cultivars including 4 elite native cultivars (Zard Aliabad, Roughani, Dezful, and Shengeh) and 4 foreign cultivars (Manzanilla, Sevillana, Konservolia, and Mission) to water shortage in the Dallaho Olive Research station of Sarpole-Zahab in Kermanshah province in 2020. Olive trees underwent 3 levels of irrigation treatment including 100% full irrigation (control), 75%, and 50% deficit irrigation. Results Based on the results, 50% deficit irrigation decreased both growth and pomological traits, but determined the highest dry matter percentage. As the severity of drought stress increased, with an accumulation of sodium and malondialdehyde, an incremental increase in osmolytes was observed, as well as an enhancement of the activity of antioxidant enzymes (peroxidase and catalase). In contrast, full irrigation led to an increase in photosynthetic pigments, calcium, and potassium. Dezful and Konservolia cultivars revealed a significantly higher growth rate, correlated in the former to higher levels of chlorophyll, compatible compounds, total phenolic content, relative water content, potassium to sodium ratio, catalase, and peroxidase activities compared with other cultivars. Konservolia showed the best yield parameters under 75% and 100% irrigation regimes, correlated to higher chlorophyll, potassium, and total phenolic content (in particular at 75% ET). Conclusions Generally, the selection of more resilient or tolerant cultivars to sustain water scarcity stress is a widely operative solution to extend rainfed orchards in semi-arid environments. Our study showed that Dezful and Konservolia had the best adaptive mechanisms to cope with the detrimental effects of drought stress.

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Section: Yield Parameters and Water Use Efficiencymentioning

confidence: 97%

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

et al. 2022

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“…This method involves implementing irrigation during growth stages that are less sensitive to drought stress, as outlined by studies conducted by Iniesta et al (2009) During the appropriate stages of plant growth, applying de cit irrigation can lead to reduced vegetative growth, better fruit quality, and increased economic pro ts, according to studies by Tognetti et al (2006) and Gholami and Zahedi (2021). When water is scarce during the owering stages, there is a decline in owering, in orescences, and perfect owers, as shown in studies by Rapoport et al (2012) and Tadayon and Hosseini (2022).…”

Section: Introductionmentioning

confidence: 99%

Assessing the impact of sustained and regulated deficit irrigation on field-grown olive cultivar ‘Zard’ (Olea europaea L.) in semi-arid condition

Arji,

Ahmadipour,

Ebadi

et al. 2023

Preprint

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Research has shown that moderate regulated deficit irrigation (RDI) can enhance the fruit and oil yield of olive trees in Mediterranean conditions. However, there is limited research on the effects of deficit irrigation on olive trees in marginal regions. To address this, a study was conducted on the Zard olive cultivar over two consecutive years. Six irrigation regimes were tested, including control (C) (100% ETc) during the growing season, sustained deficit irrigation (SDI1) at 75% ETc throughout the growing season, regulated deficit irrigation (RDI1) at 75% ETc from 4 to 9 weeks after full bloom, sustained deficit irrigation (SDI2) at 50% ETc throughout the growing season, regulated deficit irrigation (RDI2) at 50% ETc from 4 to 9 weeks after full bloom, and regulated deficit irrigation (RDI3) at 50% ETc 2 weeks before harvest. The results showed that sustained and regulated deficit irrigation negatively impacted flower number and perfect flowers in inflorescence, except for RDI3. The study found that the fruit set was not significantly impacted by the irrigation treatments RDI1 and RDI3 compared to the control. However, the irrigation treatment of SDI2 resulted in the most significant reduction in both fruit weight and pulp-to-pit ratio. Fruit yield and oil content did show significant differences among all treatments. Overall, the study showed a 25% reduction in water usage during the 4 to 9 weeks after flowering or 2 weeks before harvesting did not significantly affect fruit yield compared to the control treatment. A minor reduction in applied water (RDI1 and RDI3) is recommended for semiarid regions (excluding Mediterranean regions) to achieve high fruit and oil content.

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“…Drought could highly impair fruit set and subsequent lower yield due to the increased presence of imperfect flowers in olive trees. In contrast, adequate irrigation during flower initiation and induction improved perfect flowers and, consequently, fruit yield in olive trees (Tadayon and Hosseini, 2023). Applying irrigation during early spring can prevent severe physiological disturbances such as low floral development (Cuevas et al, 1997;Crous, 2009) and significantly enhance fruit growth kinetics even during the stone-hardening period, where fruit growth is usually slowed (Manrique et al, 1997).…”

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confidence: 99%

Assessing the impact of deficit irrigation strategies on agronomic and productive parameters of Menara olive cultivar: implications for operational water management

Sikaoui

2023

Front. Environ. Sci.

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The olive tree is an iconic tree in the Mediterranean region, traditionally cultivated under rainfed conditions; however, olive cultivars are also found outside the Mediterranean region and are widely used for oil and olive production. However, with the increasing aridity and global changes, olive agroecosystems are facing sustainability challenges. This study aims to evaluate the effect of two deficit irrigation strategies on the agronomic and productive parameters of the Menara, olive cultivar as a tool for operational irrigation water management. For this purpose, an experiment was conducted on an olive orchard for two consecutive years (2021 and 2022), comparing four regulated deficit irrigation (RDI) treatments and two sustained deficit irrigation (SDI) treatments, with fully irrigated trees. The results showed that moderate and controlled water stress under RDI did not significantly affect the yield of the Menara olive cultivar. In addition, by reducing plant water requirement by 20% during sensitive periods and by 40% during normal periods, under RDI, it is possible to save between 25% and 30% of irrigation water and to increase water productivity by 5%–20% with a slight decrease in fruit yield ranging between 10% and 15%. However, the trees subjected to the sustained deficit irrigation strategy exhibited a reduced capacity for shoot growth compared to those under RDI and fully irrigated conditions. Our findings showed that water deprivation during sensitive periods reduced phenological traits and slowed down shoot growth. Furthermore, the water status of the trees was reflected in fruit volume, as a decrease in water supply resulted in a corresponding reduction in fruit volume. Although the study provides important insights into water management strategies for olive cultivation, the short observation period does not allow for long-term plant adaptation evaluation and productivity beyond 2 years. Therefore, it is recommended that future studies extend the observation period to better understand plant adaptation to irrigation regimes.

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Effect of Irrigation Regimes and Foliar Nutrition on Flower Development and Water Productivity of Olive (Olea europaea L. cv. ‘Shengeh’)

Cited by 5 publications

References 51 publications

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

Assessing the impact of sustained and regulated deficit irrigation on field-grown olive cultivar ‘Zard’ (Olea europaea L.) in semi-arid condition

Assessing the impact of deficit irrigation strategies on agronomic and productive parameters of Menara olive cultivar: implications for operational water management

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