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Browsing Natural and Agricultural Sciences by Postgraduate "Van der Laan, Michael"

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Allelopathic interference potential of the alien invader plant Parthenium hysterophorus

Van der Laan, Michael (University of Pretoria, 2007-04-04)

The alien invader plant Parthenium hysterophorus is a Category 1 weed in South Africa, where it poses a serious threat to indigenous vegetation in particular, and to biodiversity in general. In addition to its competitive ...
Development, testing and application of a crop nitrogen and phosphorus model to investigate leaching losses at the local scale

Van der Laan, Michael (University of Pretoria, 2010-06-07)

The leaching of nitrogen (N) and phosphorus (P) from the rootzone of cropping systems is a major contributor of non-point source pollution resulting in deterioration of fresh water supplies. An escalating world population ...

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