Abstract
Weeds are a category of plants as opposed to crops; therefore, ‘weed’ and ‘crop’ are not purely biological concepts. In contrast to the crop as the object of cultivation and harvest, the weed is the invader, an uninvited guest in crop cultivation. Weed vegetation is natural from the viewpoint of an uncultivated environment, but it is semi-natural when it grows in a man-made habitat.
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Numata, M. (1982). A methodology for the study of weed vegetation. In: Holzner, W., Numata, M. (eds) Biology and ecology of weeds. Geobotany, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0916-3_2
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DOI: https://doi.org/10.1007/978-94-017-0916-3_2
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