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  • Fusarium dry rot of potatoes: etiology, epidemiology, toxicity and control
    颁布单位：[University of the Free State] |  颁布时间：1999 |  实施时间：1999 |  学科分类：[["Fusarium, --, South, Africa","Fungal, diseases, of, plants, --, South, Africa","Potato, --, Diseases, and, pests, --, South, Africa","Thesis, (Ph.D., (Plant, Pathology))--University, of, the, Free, State,, 1999"]]
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  • Factors associated with coniothyrium canker of Eucalyptus in South Africa
    颁布单位：[University of the Free State] |  颁布时间：1999 |  实施时间：1999 |  学科分类：[["Eucalyptus, --, Diseases, and, pests","Canker, (Plant, disease)","Thesis, (Ph.D., (Microbiology, and, Biochemistry))--University, of, the, Free, State,, 1999"]]
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  • Oomycetes associated with citrus and eucalypts root rot in South Africa
    颁布单位：[University of the Free State] |  颁布时间：1999 |  实施时间：1999 |  学科分类：[["Eucalyptus, --, Diseases, and, pests, --, South, Africa","Citrus, --, Diseases, and, pests, --, South, Africa","Fungal, diseases, of, plants, --, South, Africa","Pythium","Phytophthora","Dissertation, (M.Sc., (Microbiology, and, Biochemistry))--University, of, the, Free, State,, 1999"]]
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  • The Amylostereum symbiont of Sirex noctilio in South Africa
    颁布单位：[University of the Free State] |  颁布时间：1998 |  实施时间：1998 |  学科分类：[["Insect-plant, relationships, --, South, Africa","Wood-decaying, fungi, --, South, Africa","Pine, --, Diseases, and, pests, --, South, Africa","Siricidae","Basidiomycetes","Dissertation, (M.Sc., (Microbiology, and, Biochemistry))--University, of, the, Free, State,, 1998"]]
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  • Studies on stalk borers of maize and sorghum in Lesotho
    颁布单位：[University of the Free State] |  颁布时间：1998 |  实施时间：1998 |  学科分类：[["Busseola, fusca","Chilo, partellus","Parasitoids","Predators","Sorghum, --, Diseases, and, pests, --, Lesotho","Corn, --, Diseases, and, pests, --, Lesotho","Stem, borers, --, Lesotho","Thesis, (Ph.D., (Zoology, and, Entomology))--University, of, the, Free, State,, 1998"]]
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  • Die verdraagsaamheid van wildehawer vir onkruiddoders
    颁布单位：[University of the Free State] |  颁布时间：1993 |  实施时间：1993 |  学科分类：[["Wheat, --, Diseases, and, pests","Pest, control","Thesis, (Ph.D., (Agronomy, and, Horticulture))--University, of, the, Free, State,, 1993"]]
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  • Die invloed van vogstremming tydens verskillende groeistadiums op katoenproduksie
    颁布单位：[University of the Free State] |  颁布时间：1985 |  实施时间：1985 |  学科分类：[["Cotton, --, Diseases, and, pests","Plants, --, Effect, of, temperature, on","Temperature, --, Physiological, effect","Dissertation, (M.Sc.Agric., (Agronomy))--University, of, the, Free, State,, 1985"]]
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  • Studies on the survival of Verticillium dahliae in soil
    颁布单位：[University of the Free State] |  颁布时间：1979 |  实施时间：1979 |  学科分类：[["Cotton, --, Diseases, and, pests","Thesis, (Ph.D., (Plant, Pathology))--University, of, the, Free, State,, 1979"]]
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