Effect of winter irrigation on flowering and fruit set of Olea europaea L. cvs 'Zard' and 'Manzanilla' in Loushan region

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MOHAMADI SH.; GHASEMNEZHAD M.; Mohamad Salehi m.

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Journal: Journal of Plant Production Research Year:2019 | Volume:25 | Issue:4 Page(s): 145-156

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Title

Effect of winter irrigation on flowering and fruit set of Olea europaea L. cvs 'Zard' and 'Manzanilla' in Loushan region

Author(s)

MOHAMADI SH. | GHASEMNEZHAD M. | Mohamad Salehi m. | Issue Writer Certificate

Keywords

Complete flowerQ1

Final fruitQ1

Irrigation intervalQ1

Oil yieldQ1

Olea europaea L.Q1

Abstract

Background and Objectives: Flowers number and quality are the main determining factor which influence on fruit and Oil yield of olive trees. So that, water deficiency during flowers differentiation and development in winter season by increasing inComplete flowers reduce fruit yield. Therefore, one of the most important times for irrigation where there is not enough rainfall in the late winter is one month before flowering. Materials and Methods: Therefore, in this study, the effect of winter irrigation with three, six and nine days intervals on flowering, fruit set and fruit and Oil yield of two olive cultivars, Zard and Manzanilla was investigated. The control was rainfed or common irrigation schedules in the orchard, irrigation with seven days. Irrigation of trees was started from January to mid-April for three and a half months. The characteristics such as inflorescence number and inflorescence length were measured from four main branches in each tree. Thereafter, total flowers number, Complete flowers and Final fruit set after natural flowers abscission were determined form six secondary shoots in each main branch. Fruit yield per tree in each treatment was calculated after fruit maturation. Furthermore, Oil yield was determined after oil extraction from each treatment. Results: The results showed that there was a significant difference between different irrigation treatments for inflorescences number, total flowers number, Complete flowers, Final fruit set, fruit and Oil yield but no significant difference was found for fruit weight. The best winter Irrigation interval was dependent to olive cultivars. So that the lowest inflorescence number, total flowers numbers, Complete flowers percent and Final fruits set were found in rain fed olive tree but the highest values was found six days interval for cv Zard and nine days interval for cv Manzanilla. No significant difference was found for fruit yield between winter irrigation treatments, but there was a significant between winter irrigated treatments and rain fed tree. The highest fruit yield was found in winter irrigation with six days interval. Winter irrigation increased fruit yield to 35 percent and increased Oil yield to 50 percent as compared to rain fed control. The highest Oil yield was found in winter irrigation with nine days interval. Conclusion: Overall, winter irrigation could increase fruit and Oil yield by increasing Complete flowers number and Final fruit set percentage in olive cultivars Zard and Manzanilla.

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APA: Copy

MOHAMADI, SH., GHASEMNEZHAD, M., & Mohamad Salehi, m.. (2019). Effect of winter irrigation on flowering and fruit set of Olea europaea L. cvs 'Zard' and 'Manzanilla' in Loushan region. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 25(4 ), 145-156. SID. https://sid.ir/paper/155857/en

Vancouver: Copy

MOHAMADI SH., GHASEMNEZHAD M., Mohamad Salehi m.. Effect of winter irrigation on flowering and fruit set of Olea europaea L. cvs 'Zard' and 'Manzanilla' in Loushan region. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2019;25(4 ):145-156. Available from: https://sid.ir/paper/155857/en

IEEE: Copy

SH. MOHAMADI, M. GHASEMNEZHAD, and m. Mohamad Salehi, “Effect of winter irrigation on flowering and fruit set of Olea europaea L. cvs 'Zard' and 'Manzanilla' in Loushan region,” JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 25, no. 4 , pp. 145–156, 2019, [Online]. Available: https://sid.ir/paper/155857/en

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