Articles by Author: N Carlson

Search results for N Carlson

We found 14 results for you
  1. The Influence of Fertilisation on Ectomycorrhizal Colonisation of <em>Pinus patula</em> roots

    Item type: Journal Article • Journal: South African Forestry Journal
    Mycorrhizal fungi play an important role in supplying the host plant with nutrients. The presence of mycorrhizal fungi can also confer a number of other advantages on the host such as drought, disease and heavy metal tolerance. Mycorrhizal colonisation is...
  2. Progress and problems in rooting clonal <em>Carica papaya</em> cuttings

    Progress and problems in rooting clonal <em>Carica papaya</em> cuttings

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Carica papaya (L) is one of the few fruit crops that is still propagated commercially by seed. In the cool subtropical Pietermaritzburg area, a female clone ‘Honey Gold’ has been vegetatively propagated, by rooting leafy cuttings, for over 40 years...
  3. Survival and early growth effects of some re-establishment pratices with <em>Pinus patula</em>

    Survival and early growth effects of some re-establishment pratices with <em>Pinus patula</em>

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    The presence of harvesting residues (slash) has previously been found to impact negatively on the early survival of tree seedlings. The aim of the trials discussed in this paper was to investigate ways of improving seedling survival when re-establishing stands...
  4. A pilot study into the effects of fertilizer applied at planting on branching in <em>Pinus patula</em>

    A pilot study into the effects of fertilizer applied at planting on branching in <em>Pinus patula</em>

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    This study aimed to investigate the effect of fertilizer applications on the early branching dynamics of trees that were fertilized with 25 g P tree.1 at planting compared to unfertilized trees. The study took place at two sites where significant...
  5. Impact of fertilization at first thinning on <em>Pinus patula</em> basal area increment in Mpumalanga

    Impact of fertilization at first thinning on <em>Pinus patula</em> basal area increment in Mpumalanga

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Seventeen fertilizer trials were established in 8 year old Pinus patula compartments in the Mpumalanga region between 1990 and 1992. The fertilizer was applied immediately after the stands received their first thinning, which, in general, reduced the stocking from about...
  6. Marital Expectations and Marital Satisfaction Between African Immigrant and United States Born Married Couples

    Marital Expectations and Marital Satisfaction Between African Immigrant and United States Born Married Couples

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study examined the relationship between marital expectations and marital satisfaction among U.S. born (n=157; females=51.6%) and immigrant African couples (n=43; females=44.6%) who were faith community members. The participants completed the Relationship Assessment Scale (RAS; Hendrick, 1988), Relationship Pleasure Scale...
  7. Responses of Eucalyptus species to fertilizer applications made at planting on granitic parent materials in the Mpumalanga and Northern Provinces of South Africa

    Responses of Eucalyptus species to fertilizer applications made at planting on granitic parent materials in the Mpumalanga and Northern Provinces of South Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Early research trials in South Africa have shown that Eucalyptus species generally respond positively to the addition of nutrients at planting. However, as most of these research trials were located in KwaZulu-Natal, it was important to investigate the nature ofthe...