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(Soil,
2003
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  • Evaluating maize production potential of selected semi-arid ecotopes using a water balance model
    颁布单位：[University of the Free State] |  颁布时间：2003 |  实施时间：2003 |  学科分类：[["Corn, --, South, Africa, --, Glen","Water, balance, (Hydrology), --, Measurement","Dissertation, (M.Sc.Agric., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2003"]]
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  • Changes in the phosphorus status of soils and the influence on maize yield
    颁布单位：[University of the Free State] |  颁布时间：2003 |  实施时间：2003 |  学科分类：[["Ambic, 1","Bray, 1","Extractable, P","P, fertilizer, guidelines","P, requirement, factors","Relationships","Soil, thresholds","Soil, properties","Corn, --, Fertilizers, --, South, Africa, --, KwaZulu-Natal","Soils, --, Phosphorus, content, --, South, Africa, --, KwaZulu-Natal","Phosphatic, fertilizers, --, South, Africa, --, KwaZulu-Natal","Thesis, (Ph.D., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2003"]]
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  • Grondversuring en bekalking van Oos-Vrystaatse gronde onder droëlandkoring
    颁布单位：[University of the Free State] |  颁布时间：2003 |  实施时间：2003 |  学科分类：[["Aluminium, tolerance","Grain, quality","Grain, yield","Lime, requirement,","Nutrient, uptake","Wheat, cultivars","Liming, of, soils, --, South, Africa, --, Eastern, Free, State","Soil, acidity, --, South, Africa, --, Eastern, Free, State","Wheat, --, South, Africa, --, Eastern, Free, State","Dissertation, (M.Sc.Agric., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2003"]]
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