Articles by Keyword: Soil Degradation

Search results for Soil Degradation

We found 374 results for you
  1. Long-term effects of conservation practices on the nitrogen fertility of a soil cropped annually to wheat

    Long-term effects of conservation practices on the nitrogen fertility of a soil cropped annually to wheat

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sustainable farming in the semi-arid interior of South Africa requires the adoption of conservation practices to maintain and, if possible, increase soil fertility. The effects of some such practices on the nitrogen fertility of a hydromorphic sandy clay loam soil...
  2. The effect of oven-drying on residual inorganic nitrogen in soils

    The effect of oven-drying on residual inorganic nitrogen in soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Residual ammonium nitrogen in soils which were dried in an oven increased, whereas residual nitrate nitrogen remained almost constant. This observation led to experiments which help to explain the accumulation of ammonium nitrogen in oven-dried soils. It was found that...
  3. Soils and the environment: the past 25 years

    Soils and the environment: the past 25 years

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Local work on selected environmental impacts on soil quality and the role of soils in the attenuation of environmental pollution is reviewed. Examples of negative impacts from mining, industries, urbanization, agriculture and forestry abound. The safe and sustainable use of...
  4. Defining function in rangelands of the Peddie district, Eastern Cape, using Landscape Function Analysis

    Defining function in rangelands of the Peddie district, Eastern Cape, using Landscape Function Analysis

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Portions of natural rangeland in the Great Fish River Valley have been defined as degraded by several studies using vegetation analysis techniques. It was considered desirable that soil surface condition should also be described to provide an index of landscape...
  5. Soil seed bank evaluation and seedling establishment along a degradation gradient in a semi-arid rangeland

    Soil seed bank evaluation and seedling establishment along a degradation gradient in a semi-arid rangeland

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The effects of rangeland degradation on the size and species composition of the seed bank and seedling establishment in the field were quantified over a two year period (2000–2001 and 2001–2002 growing seasons). Soil seed bank sampling was carried out...
  6. Exploring differences of soil quality as related to management in semiarid rangelands in the western Bophirima District, North West province, South Africa

    Exploring differences of soil quality as related to management in semiarid rangelands in the western Bophirima District, North West province, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Differences in land-use management may result in different rangeland condition (soil, vegetation and biodiversity) and productivity. Vegetation condition in contrasting land-use management systems is well documented in semiarid rangelands, but relatively little information is available on soil quality. This study...
  7. Managing cultivated pastures for improving soil quality in South Africa: challenges and opportunities

    Managing cultivated pastures for improving soil quality in South Africa: challenges and opportunities

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Loss of productive agricultural land due to soil degradation poses a serious threat to agricultural output and sustainability. Soil degradation of cultivated pastures manifests as a long-term decline in production potential. There are concerns that soils under pastures in certain...
  8. Effect of integrated soil bunds on key soil properties and soil carbon stock in semi-arid areas of northern Ethiopia

    Effect of integrated soil bunds on key soil properties and soil carbon stock in semi-arid areas of northern Ethiopia

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Land degradation is a serious global problem. To reclaim degraded land, many soil bunds have been implemented. However, their effectiveness has not been studied in all regions of Ethiopia. The objective of this study was to investigate the effect of...
  9. Effects of stockpiling on selected properties of opencast coal mine soils

    Effects of stockpiling on selected properties of opencast coal mine soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Soil stockpiling is a necessary component of opencast coal mining and, because most of the soils involved have arable potential, this involves the possibility of serious soil degradation. A study at four mines on the Highveld of South Africa involved...
  10. 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...