颁布单位：[University of the Free State] |  颁布时间：2010 |  实施时间：2010 |  学科分类：[["Thesis, (Ph.D., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2010","Corn, --, South, Africa, --, Free, State","Corn, --, Climatic, factors","Corn, --, Risk, assessment, --, South, Africa, --, Free, State","Crops, and, climate","Dry, farming, --, South, Africa, --, Free, State","WRSI","Rainy, season","Maize","Frost","Agroclimatological, risk, tool","Climate","Drought"]]

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