Journal article
Boron deficiency in eucalypt plantations in China
Canadian Journal of Forest Research, Vol.24(12), pp.2409-2416
1994
Abstract
Boron deficiency is identified as one of the more important causes of poor stem form and malformed leaves in plantations of Eucalyptusglobulus in Yunnan Province, and of Eucalyptusgrandis, Eucalyptustereticornis, and Eucalyptusurophylla in Guandong Province. Symptoms of B deficiency in E. globulus were rolled and malformed leaves, stem dieback, and a prostrate form. In E. urophylla, leaf margins became chlorotic then necrotic, leaves turned brittle and corky, shoots died back, and the upper stem nodes were enlarged supporting numerous short-lived axillary shoots. In E. grandis, stem dieback was preceded by the basipetal accumulation of anthocyanin in leaves. Boron-deficient E. tereticornis leaves developed marginal and interveinal chlorosis and recurved margins. Depressed foliar B concentrations were associated with visible symptoms. In E. globulus, the mean B concentration in young leaves of healthy trees was 31 mg/kg dry matter compared with 10 mg/kg in prostrate trees. Symptoms did not appear in E. globulus trees supplied with B fertilizer at planting. Normal shoot growth was restored in E. urophylla by the addition of B to the soil.
Details
- Title
- Boron deficiency in eucalypt plantations in China
- Authors/Creators
- B. Dell (Author/Creator)N. Malajczuk (Author/Creator)
- Publication Details
- Canadian Journal of Forest Research, Vol.24(12), pp.2409-2416
- Publisher
- NRC Research Press
- Identifiers
- 991005544992507891
- Murdoch Affiliation
- School of Biological and Environmental Sciences
- Language
- English
- Resource Type
- Journal article
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- Citation topics
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- Plant & Animal Science