ScholarSpace will be brought offline for upgrades on Wednesday December 9th at 11AM HST. Service will be disrupted for approximately 2 hours. Please direct any questions to

Show simple item record

Item Description Plazer, C. en_US 2008-03-08T23:26:04Z 2008-03-08T23:26:04Z 1983-10 en_US
dc.identifier.citation Palzer C. 1983. Crown symptoms of regrowth dieback. Pac Sci 37(4): 465-470. en_US
dc.identifier.issn 0030-8870 en_US
dc.description.abstract Symptoms in the crowns of Eucalyptus obliqua and E. regnans trees affected by "regrowth dieback" are reevaluated and amplified using tree climbing, tree felling, and optical study methods. A distinction is made between the dying upper branches and the lower crown of dieback-affected trees. Declining branches showed an increase in mortality or absence of growing shoots, naked buds, and accessory buds with increase in dieback severity. Mean distance between leaf scars indicated that growth rate of shoots was slowed before death. With increase in dieback severity of a branch, leaf size and leaf area index were reduced. Leaves on dieback-affected branches showed increased chlorosis and reddish colors. There are common features linking dieback-affected shoots with shoots showing mild "witches brooming."Twiginhabiting insects are considered of only secondary importance. There was no evidence of any culturable microorganism from the vascular system. The symptoms could be the result of water deficits and high leaf temperatures. Alternatively, the symptoms are suggestive that microbes such as a virus or more especially a mycoplasma are involved. en_US
dc.language.iso en-US en_US
dc.publisher University of Hawai'i Press en_US
dc.title Crown Symptoms of Regrowth Dieback en_US
dc.type Article en_US
dc.type.dcmi Text en_US

Item File(s)

Files Size Format View
v37n4-465-470.pdf 4.982Mb PDF View/Open

This item appears in the following Collection(s)

Show simple item record


Advanced Search


My Account