颁布单位：[University of the Free State] |  颁布时间：2013 |  实施时间：2013 |  学科分类：[["Thesis, (Ph.D, (Plant, Sciences))--University, of, the, Free, State,, 2013","Apocynaceae","Biogeography","Cryptolepis","Micromorphology","Nomenclature","Palynology","Periplocoideae","Phylogeny","Systematics","Taxonomy","Asclepiadaceae"]]

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颁布单位：[University of the Free State] |  颁布时间：2013 |  实施时间：2013 |  学科分类：[["Dissertation, (M.Sc.Agric., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2013","Nitrogen, fertilizers","Crops, and, nitrogen","Plants, --, Effect, of, nitrogen, on","Beetroot","Beta, vulgaris, L.","Limestone, ammonium, nitrate","Ammonium, nitrate, urea","Ammonium, sulphate","Growth","Yield","Quality"]]

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