Articles by Author: Sigrun Ammann

Search results for Sigrun Ammann

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  1. Effects <em>of Artemisia afra</em> leaf extracts on seed germination of selected crop and weed species

    Effects <em>of Artemisia afra</em> leaf extracts on seed germination of selected crop and weed species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Herbicide resistance in weeds is a phenomenon threatening sustainable cereal production in the winter rainfall region of South Africa. Every possible weed control measure that may be used to complement chemical weed control measures should be investigated. The effect of...