Articles by Author: Michael J Wingfield

Search results for Michael J Wingfield

We found 253 results for you
  1. Culture-independent detection and quantification of <em>Fusarium circinatum</em> in a pine-producing seedling nursery

    Culture-independent detection and quantification of <em>Fusarium circinatum</em> in a pine-producing seedling nursery

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The primary symptoms associated with Fusarium circinatum infection in pine seedling nurseries are root and collar rot, shoot and tip die-back and seedling mortality. Management of this pathogen in nurseries usually involves the integration of various strategies relating to sanitation,...
  2. Comparison of the tolerance of <em>Pinus patula</em> seedlings and established trees to infection by <em>Fusarium circinatum</em>

    Comparison of the tolerance of <em>Pinus patula</em> seedlings and established trees to infection by <em>Fusarium circinatum</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Since the first appearance of Fusarium circinatum in South Africa in 1990, foresters have been challenged with poor field survival of Pinus patula seedlings at establishment. One of the best long-term solutions is to improve the genetic tolerance of P...
  3. Association of the pitch canker pathogen <em>Fusarium circinatum</em> with grass hosts in commercial pine production areas of South Africa

    Association of the pitch canker pathogen <em>Fusarium circinatum</em> with grass hosts in commercial pine production areas of South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The pitch canker pathogen, Fusarium circinatum, has major impacts on production in pine nurseries and plantations in South Africa. Thus far, efforts to reduce local spread have focused on rouging of infected pines and sanitation to eliminate local sources of...
  4. Effect on nursery and field performance of <em>Pinus patula</em> seedlings after inoculation with <em>Fusarium circinatum</em>

    Effect on nursery and field performance of <em>Pinus patula</em> seedlings after inoculation with <em>Fusarium circinatum</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Fusarium circinatum is an important fungal pathogen of Pinus species. In South Africa, it is the most significant pathogen of Pinus patula seedlings in forestry nurseries where it presents a substantial constraint to productivity and can continue to cause mortality...
  5. Three new and important insect pests recorded for the first time in Colombian plantations

    Three new and important insect pests recorded for the first time in Colombian plantations

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Subsequent to 1950, commercially propagated and non-native trees, including Pinus, Eucalyptus and Cupressus species in Colombian plantations, have been damaged by several native defoliating insects, residing mainly in the Lepidoptera (Geometridae), Phasmatodea (Heteronemiidae) and the Hymenoptera (Formicidae). We report on...
  6. Evaluating the inheritance of <em>Ceratocystis acaciivora</em> symptom expression in a diverse <em>Acacia mangium</em> breeding population

    Evaluating the inheritance of <em>Ceratocystis acaciivora</em> symptom expression in a diverse <em>Acacia mangium</em> breeding population

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    A dramatic rise in the incidence of a serious canker and wilt disease of Acacia mangium has led to the replacement of thousands of hectares of plantation forests in eastern Sabah. A disease screening program was initiated to evaluate levels...
  7. Biology, incidence and host susceptibility of <em>Pineus boerneri</em> (Hemiptera: Adelgidae) in Colombian pine plantations

    Biology, incidence and host susceptibility of <em>Pineus boerneri</em> (Hemiptera: Adelgidae) in Colombian pine plantations

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Adelgids (Hemiptera) in the genus Pineus have been reported as introduced insect pests causing serious losses to Pinus plantations worldwide. In 2008, Pineus boerneri was recorded for the first time in Colombia, with infestations noted on Pinus kesiya, P. tecunumanii,...
  8. Diseases on <em>Eucalyptus</em> species in Zimbabwean plantations and woodlots

    Diseases on <em>Eucalyptus</em> species in Zimbabwean plantations and woodlots

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Zimbabwe 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...
  9. The Eucalyptus shoot and leaf pathogen Teratosphaeria destructans recorded in South Africa

    The Eucalyptus shoot and leaf pathogen Teratosphaeria destructans recorded in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Species of Teratosphaeria include some of the most important fungal pathogens of plantation-grown eucalypt trees. During routine disease surveys, symptoms and signs of leaf spot and blight were observed on the foliage of one-year-old E. grandis × E. urophylla hybrids...