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Environmental Impact

From climate change to biodiversity loss - documenting human impacts on the environment

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Abstract

The use of gypsum as a soil ameliorant against sodicity, the effects of acidification, poor water infiltration and as a Ca and S fertilizer, and the use of phosphogypsum to lower the sodium adsorption ratios of industrial effluents are reviewed. The problem of increasing soil F to unacceptable...

Author(s)
Smith, H. J. C.; Loock, A. H.; Merwe, A. J. van der
Citation
South African Journal of Plant and Soil, 1994, 11, 3, pp 139-141
Abstract

Undamaged cv. Waltham Cross berries developed little rot, even when inoculated with B. cinerea, compared with Barlinka, but once infected tended to rot faster. SO2 damage appeared to stimulate latent infections in Waltham Cross while Barlinka berries tended to rot rapidly irrespective of SO2....

Author(s)
Taylor, M. A.; Chambers, K. R.; Watts, J. E.
Citation
Deciduous Fruit Grower, 1990, 40, 5, pp 168-171
Abstract

Results of a study of the effects of different exposures to ozone on 46 species are given in graphs and tables. The most sensitive species were three Pinus spp. and Larix decidua, and the most resistant included Cornus spp., Acer spp. and Quercus spp. The symptoms on conifers and hardwoods are...

Author(s)
Wood, F. A.; Davis, D. D.
Citation
Scientific Agriculture, 1969, 17, 1, pp 4-5
Abstract

Salinization, leaching of salts and drainage on the 30 000 ha Vaalharts Irrigation Scheme were investigated. Soon after 1940, when flood irrigation commenced on the fine sandy soils, a ground water table developed at a depth of 0.9 - 1.5 m. Although beneficial in supplying water to crops the...

Author(s)
Streutker, A.; Molenaar, H. W.; Hamman, H.; Nel, C. C.; Mulder, J. H.
Citation
Water SA, 7, 3, pp 175-184

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