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Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M Tarigan --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa MJ Wingfield --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa M van Wyk --- Department of Genetics, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa B Tjahjono --- , Indonesia J Roux --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South AfricaPruning (singling) is a common silvicultural practice in commercial Acacia plantations because these trees tend to have multiple stems. The wounds resulting from pruning are susceptible to infection by pathogens. Ceratocystis acaciivora and Lasiodiplodia theobromae have been shown recently to... -
Lasiodiplodia species associated with dying Euphorbia ingens in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: JA van der Linde --- Department of Microbiology and Plant Pathology, DST/NRF Centre of Excellence in Tree Health Biotechnology, Forestry and Agricultural Biotechnology Institute, South Africa DL Six --- College of Forestry and Conservation, Department of Ecosystem and Conservation Sciences, USA MJ Wingfield --- Department of Microbiology and Plant Pathology, DST/NRF Centre of Excellence in Tree Health Biotechnology, Forestry and Agricultural Biotechnology Institute, South Africa J Roux --- Department of Microbiology and Plant Pathology, DST/NRF Centre of Excellence in Tree Health Biotechnology, Forestry and Agricultural Biotechnology Institute, South AfricaVarious species of Euphorbia occur in South Africa, including herbaceous, succulent and woody types. The largest of the succulent Euphorbia spp. in South Africa is Euphorbia ingens. These trees have been dying at an alarming rate in the Limpopo province... -
A diverse assemblage of Botryosphaeriaceae infect Eucalyptus in native and non-native environments
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: B Slippers T Burgess D Pavlic R Ahumada H Maleme S Mohali C Rodas MJ WingfieldThe Botryosphaeriaceae cause endophytic infections of leaves and bark of various trees, including Eucalyptus, and they apparently persist in this state for extended periods of time. Under conditions of stress, these fungi cause many different disease symptoms on Eucalyptus, of... -
Damage to foliage and stems caused by fungal pathogens in young eucalypt plantations in Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Muimba-Kankolongo --- School of Natural Resources, Zambia IN Nawa --- School of Agricultural Sciences, Zambia J Roux --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, South Africa P Ng'andwe --- School of Natural Resources, ZambiaPlantations consisting of non-native tree species were established on the Copperbelt of Zambia to supplement timber supply from natural forests and to meet the increasing demand of round wood and fuel wood for the copper mines. In early 2004, a... -
Diseases on Eucalyptus species in Zimbabwean plantations and woodlots
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Luke Jimu --- Forest Science Postgraduate Programme, Forestry and Agricultural Biotechnology Institute (FABI), South Africa Michael J Wingfield --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), South Africa Eddie Mwenje --- Bindura University of Science Education, Zimbabwe Jolanda Roux --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), South AfricaZimbabwe embarked on planting Eucalyptus species in the early 1900s. Based on a robust breeding programme, it has become a major source of seed for other countries in and outside Africa. Tree health surveys conducted on Eucalyptus in some east...