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Cotton (Texas) Root RotOlsen, Mary W. 05 1900 (has links)
4 pp. / Cotton root rot commonly causes a sudden wilt and death of susceptible plants in summer months but may also cause a slow decline, especially at cooler temperatures. So, positive identification of disease by an experienced person is essential. This publication addresses the symptoms, environmental conditions, disease, prevention and control methods, sampling, identifying susceptible plants and the tolerant and immune plants of cotton root rot.
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Diseases of Urban Plants in ArizonaOlsen, Mary W. 04 1900 (has links)
26 pp. / Geographically, Arizona can be divided roughly into four areas, southwest, central, southeast, and northern. These regions correspond with four climatic zones, allowing a large and diverse number of plants to be grown for landscaping purposes. But, interestingly, in this desert environment many of the parasitic diseases in landscape plants are caused by a limited number of plant pathogens. This publication discusses some of those diseases that are sufficiently important to the urban plants in all areas Arizona.
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GERMINATION RESPONSES OF SORGHUM VARIETIES (SORGHUM BICOLOR L. MOENCH) TO FUNGICIDE SEED TREATMENTS.Khalif, Ahmed Sheikh Hassan. January 1985 (has links)
No description available.
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Epidemiology of Fusarium in winter wheat (Triticum aestivum L.)Jenkinson, Peter January 1994 (has links)
No description available.
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Comparative ultrastructure and cytochemistry of rust infections, with particular reference to Puccinia menthae and Uromyces vicia-fabaeLarous, Larbi January 1990 (has links)
No description available.
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Erysiphe graminis f. sp. hordei and the role of extracellular cellulases in pathogenicityPryce-Jones, Emily January 1997 (has links)
No description available.
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Genetic variation in the cereal eyespot pathogen Pseudocercosporella herpotrichoides in relation to field populations and resistance to prochlorazPapaikonomou, Michalis January 1996 (has links)
No description available.
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Interactions of the pathogen leptosphaeria maculans (Desm.) Ces and de Not. and Brassica napusButterworth, Lisa A. January 1998 (has links)
No description available.
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The effect of a homoeopathic preparation in the control of tobacco mosaic virusWebb, Kathleen A. January 1997 (has links)
A dissertation submitted in partial compliance with the requirements for the Masters Degree in Technology: Homoeopathy, Technikon Natal, 1997. / Most economically important crop plants may become infected with viruses. Several of these virus diseases are limiting factors in agricultural production and have contributed to serious economic and social hardship in many countries, especially in tropical and subtropical regions. Homoeopathic microdoses have been investigated for their role in the control of virus diseases, with good results. However, few of the studies contain statistical analyses. The object of this study was to assess the effect of a homoeopathic preparation of a leaf infected with tobacco mosaic virus (TM Viricum) in the contol of tobacco mosaic virus (TMV). The potencies used were 6CH, 12CH, 30CH and 200CH. iv Trays of 24 tomato seedlings per tray were the subjects of this study. Tomato plants were systemically infected with TMV. Four trays were used per treatment. There was an uninoculated and an inoculated control group. The rest of the test population was divided into two groups. The / M
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Biological and serological properties of a bacterium isolated from greening-infected citrus in South AfricaChippindall, Richard-John, Chapman January 1991 (has links)
A Thesis submitted to the Faculty of Science, University of
the Witwatersrand, Johannesburg for the Degree of Doctor of
Philosophy / Greening is a severe disease of citrus and is a major cause
of crop loss in many parts of Africa and Asia.Numerous
attempts have been made by various workers to isolate the
aetiological agent of the disease and although reports
claiming the successful culture of the organism have
appeared, the isolations were never fully confirmed. ( Abbreviation abstract ) / AC2017
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