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http://dx.doi.org/10.14578/jkfs.2021.110.4.601

Fructification, Fruit Characteristics, and Yield According to Tree Age of Jujube Tree (Zizyphus jujuba var. inermis) 'Hwangsil'  

Kim, Chul-Woo (Special Forest Resources Division, National Institute of Forest Science)
Na, Min-Ho (Special Forest Resources Division, National Institute of Forest Science)
Park, Hyowon (Special Forest Resources Division, National Institute of Forest Science)
Lee, Uk (Special Forest Resources Division, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.110, no.4, 2021 , pp. 601-609 More about this Journal
Abstract
The fructification characteristics, fruit quality, and yield of the 'Hwangsil' jujube tree were analyzed at various stages of growth age (3-8 years old) to obtain basic data for developing high-quality jujube production technology. The average height, crown area, stem diameter near the root, stem clear length, the number of the main branches, and the distance between any two main branches were 230.8 cm (224.4~247.2 cm), 3.0 m2 (2.1~3.8m2), 4.8 cm (2.4~6.2 cm), 69.1 cm (46.6~78.0 cm), 12.9 (8.6~19.6), and 8.1 cm (7.4~9.0 cm), respectively. Tree age was positively correlated with the crown area, stem diameter near the root, but stem clear length negatively correlated with the number of main branches. The average number of fruits per mother bearing shoot and tree was 20.0 (14.3~26.3) and 302.8 (257.3~373.5), respectively. There was no correlation between tree age and fructification characteristics, such as the number of fruit-bearing mother shoots per the main branch, the number of fruit-bearing shoots per fruit-bearing mother shoot, and the number of fruits per fruit-bearing shoot. Since the shape of the jujube tree is constantly managed based onthe growing area and type of greenhouse where the tree grown. The average fruit weight, fruit hardness, and soluble solid content were 24.2 g (22.4~26.8 g), 28.4 N (27.3~30.0 N), and 19.0% (17.1~19.8%), respectively, with no correlation between the tree age and fruit quality. The average yield was 7.4 kg per tree (5.7~9.1 kg), with significantly high quantities were produced in six and seven years old trees.
Keywords
Zizyphus jujuba; Hwangsil; tree age; fructification; yield;
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