Articles by Keyword: Lt Em Gt Ceratocystis Lt Em Gt Wilt

Search results for Lt Em Gt Ceratocystis Lt Em Gt Wilt

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  1. Role of site in the mortality and production of <em>Acacia mangium</em> plantations in Indonesia

    Role of site in the mortality and production of <em>Acacia mangium</em> plantations in Indonesia

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    In Indonesia, Acacia mangium plantations exceed 1.6 Mha contributing approximately 3.5% of the country’s GDP. The viability of these plantations is increasingly threatened by fungal pathogens, insect pests, squirrels, monkeys, elephants and wind damage. Studies indicate that the problem is...
  2. Survival of <em>Ralstonia solanacearum</em> biovar 2 in soil under different cropping systems

    Survival of <em>Ralstonia solanacearum</em> biovar 2 in soil under different cropping systems

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Survival of Ralstonia solanacearum biovar 2 (race 3) was monitored in an artificially infested field over a five year period. Four cultural practices (maize monoculture, potato monoculture, bare fallow and weed-fallow) were applied. Ralstonia populations in the soil were quantified...
  3. Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae

    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
    Pruning (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...
  4. <em>Ceratocystis</em> species: emerging pathogens of non-native plantation <em>Eucalyptus</em> and <em>Acacia</em> species

    <em>Ceratocystis</em> species: emerging pathogens of non-native plantation <em>Eucalyptus</em> and <em>Acacia</em> species

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The fungal genus Ceratocystis includes many economically important tree pathogens. Until the 1980s, this genus of plant pathogens was not known from non-native plantation-grown forestry species. However, during the course of the last 20 years, a number of reports have...
  5. Preliminary evaluation of guava selections for guava wilt disease resistance in South Africa

    Preliminary evaluation of guava selections for guava wilt disease resistance in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Guava wilt disease (GWD), caused by Nalanthamala psidii, is a serious disease occurring in the guava-producing areas of the Mpumalanga and Limpopo provinces of South Africa. Two resistant guava rootstocks, TS-G1 and ‘TS-G2’, were developed by the ARC-ITSC in 1995...
  6. Impact of soil amendments and weather factors on bacterial wilt and yield of two tomato cultivars in Abeokuta, Nigeria

    Impact of soil amendments and weather factors on bacterial wilt and yield of two tomato cultivars in Abeokuta, Nigeria

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Tomato bacterial wilt, caused by Ralstonia solanacearum, leads to tomato yield losses of up to 80% in south-western Nigeria. Soil amendments and weather conditions are important in the management of the disease. Field experiments were conducted at the Research Farm...
  7. Applied disease screening and selection program for resistance to vascular wilt in Hawaiian <em>Acacia koa</em>

    Applied disease screening and selection program for resistance to vascular wilt in Hawaiian <em>Acacia koa</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Acacia koa is a valuable tree species economically, ecologically and culturally in Hawai'i. A vascular wilt disease of A. koa resulting from infection by the fungal pathogen Fusarium oxysporum f. sp. koae (FOXY) causes high rates of mortality in field...
  8. 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...
  9. Efficacy of fungicides, plant resistance activators and biological control agents against guava wilt disease caused by <em>Nalanthamala psidii</em>

    Efficacy of fungicides, plant resistance activators and biological control agents against guava wilt disease caused by <em>Nalanthamala psidii</em>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Guava wilt disease (GWD) caused by the fungus Nalanthamala psidii remains a major constraint to guava production in South Africa and South-east Asia. In the current study, chemical and biological products as well as plant resistance activators were evaluated for...