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Economic evaluation of the effect of abnormal kiwifruit thinning on total yield of Actinidia deliciosa L. cv. Hayward vineyards
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Rasool Barzegar   , Mahmood Ghasemnezhad , Reza Esfanjari Kenari |
| University of Guilan |
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Abstract: (151 Views) |
Kiwifruit cv. Hayward is one of the main export crops from Iran. A considerable proportion of the fruits produced in each vine lose their export value due to being malformed. Therefore, to increase the percentage of exportable fruits and the income of kiwifruit growers, the present study was conducted as a randomized complete block design with four replications. The experimental treatments included thinning of all abnormal fruits on each vine, including small, flat, fanshape and misshapen fruits, from the whole vine at four different times: 15, 30, 45 and 60 days after fruit set. The results showed that the highest amount of premium fruit (extra grade) was obtained in the thinning treatment applied day after fruit set with 7.47 kg per vine, accounting for 9.5 % of the total yield. The thinning treatment at the 15th day after fruit set with 60.27 kg of grade I fruit, representing 78% of the total yield, which was 24% higher than that of the control treatment (45.12 kg). Overal, the results indicated that thinning at different times had a significant effect on the amount of total revenue per kiwifruit vine. The highest total revenue was obtained from thinning treatment applied 30 and 15 days after fruit set, with values of 18,987,535 and 18,955,662 Rials per vine, representing increases of 11.72 and 11.53% compared with the control (16,995,099 Rials), respectively.
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| Keywords: Fruit thinning, Total revenue, Quality grading, Yield |
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Full-Text [PDF 473 kb]
(65 Downloads)
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Type of Study: Research |
Subject:
Pomology
Received: 2023/10/26 | Accepted: 2024/07/18 | Published: 2026/01/31
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