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Abstract Detail


Recent Topics Posters

Lee, Kyung Joon [1], Yun, Hye Young [1].

Estimation of Vigor and Recovery Time of Transplanted Trees Using a Shigometer.

The objectives of this study were to estimate¸ using a Shigometer¸ the vigor and number of years required for transplanted trees to recover to a normal condition. Cambial electrical resistance (CER) of twenty healthy landscape tree species which had not been moved were measured weekly or biweekly to collect basic data on CER of various trees. The CER of four transplanted tree species at DBH of 10-20cm were measured in May for three years after transplanting and extrapolated through regressions to estimate recovery time to normal CER. Large variations in CER (in kilo-ohms) were observed between dormant and growing seasons, and each species had distinctive CER values. Metasequoia glyptostroboides and Platanus occidentalis showed lowest and highest CER, respectively, throughout the year. The CER decreased gradually with opening of winter buds in March or April and reached minimum values in June through August. Pinus densiflora¸ Ginkgo biloba ¸ Prunus yedoensis¸ and Zelkova serrata during the three years after transplanting showed higher CER than un-transplanted healthy trees, suggesting lower vigor of the transplanted trees. However¸ the CER of transplanted trees decreased gradually during the three years¸ approaching the values of the un-transplanted trees. Regressions of CER values of above two groups of trees indicated that the transplanted trees would show normal CER values nine years after transplanting. The predicted average nine years required for transplanted trees to recover from transplanting shock was longer than the known period of five years by many experienced arborists.


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Lab. of Tree Physiology in Seoul National University


1 - Seoul National University, Department of Forest Resources, College of Agriculture and Life Sciences,, 56-1 Shillim-dong, Kwanak-gu, Seoul, 151-742, Republic of Korea

Keywords:
Shigometer
cambial activity
tree vigor.

Presentation Type: Recent Topics Poster
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P79016
Abstract ID:2584


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