Articles by Keyword: Soil Type

Search results for Soil Type

We found 384 results for you
  1. A comparison of three methods of soil water content determination

    A comparison of three methods of soil water content determination

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In forestry the need to manage plantations on a sustainable site-specific basis requires the understanding and management of any growth limiting factors. Soil water regime is a factor considered to be of prime importance with respect to explaining differences in...
  2. Effect of microencapsulated alachlor on South African sunflower (<em>Helianthus annuus</em> L.) cultivars

    Effect of microencapsulated alachlor on South African sunflower (<em>Helianthus annuus</em> L.) cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The microencapsulated formulation of alachlor is becoming increasingly popular for use on sunflower in South Africa, where it is registered for use at a rate of 1.54 to 1.92 kg ai ha−1. Some injury symptoms, apparently herbicide induced, have been...
  3. Physicochemical characteristics of communal rangeland soils along two defined toposequences in the Eastern Cape, South Africa

    Physicochemical characteristics of communal rangeland soils along two defined toposequences in the Eastern Cape, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    To proffer a sustainable solution to rangeland degradation, an understanding of the innate soil properties is vital. This study investigated the relative association of surface (0–20 cm) soil physicochemical properties, viz. electrical conductivity, cation exchange capacity (CEC), soil organic carbon,...
  4. 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...
  5. Factors Affecting Soil Phosphate Distribution and Reactions in Cape Forest Soils

    Item type: Journal Article • Journal: South African Forestry Journal
    The amounts of various forms of phosphate in some Cape soils and the adsorption of phosphate by these soils were investigated. The levels were low and only 2% was in available form. The major fraction of phosphate in the soil...
  6. Fertilising Commercial Forest Species in Southern Africa: Research Progress and Problems (Part 1)

    Item type: Journal Article • Journal: South African Forestry Journal
    Since the inception of forest fertiliser research in Southern Africa in 1926, eight eucalypt, six pine and four acacia species have been tested, encompassing a wide range of sites in summer, winter and uniform rainfall areas. Marked deficiencies of P,...
  7. Influence of Soil Organic Matter Content on the Responsiveness of <em>Eucalyptus grandis</em> to Nitrogen Fertiliser

    Item type: Journal Article • Journal: South African Forestry Journal
    It is widely recognised that the inherent nitrogen (N) mineralisation capacity of a soil is directly related to the organic matter content. Consequently, in estimating the N requirements of Eucalyptus grandis at planting this mineralisation potential must be taken into...
  8. The Influence of Site Factors on the Foliar Nutrient Content of <em>Eucalyptus grandis</em> in Natal

    Item type: Journal Article • Journal: South African Forestry Journal
    Although foliar analysis is commonly used to diagnose the nutritional status of trees and their ability to respond to fertilising, it is also a measure of site type and quality. The availability of nutrients in the soil varies with climatic...
  9. Site Evaluation in Black Wattle with Special Reference to Soil Factors

    Item type: Journal Article • Journal: South African Forestry Journal
    Together with climate, soil characteristics are the most important factors affecting tree growth. However, the attempts in many site evaluation studies to establish a direct relationship between soil factors and tree growth have not been very successful, the exception being...
  10. Cable Yarding in Southern Africa: An Analysis of its Productivity and Possible Procedure for its Improvement

    Item type: Journal Article • Journal: South African Forestry Journal
    The demand for timber in southern Africa is increasing and this is resulting in the afforestation of areas which require cable yarding when harvested. The demand for cable yarders, essentially fixed skylines, is therefore increasing rapidly. Stress is being placed...