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Characterisation of rhizoctonia barepatch declineWiseman, Bronwyn Meg. January 1996 (has links) (PDF)
Bibliography: leaves 184-209. This thesis describes the occurence of natural, biologically based suppression of Rhizoctonia barepatch in a direct drilled system at Avon, South Australia. The supressive characteristics are transferable, removed by biocidal treatments, and active against increasing doses of R. solani AG-8, Gaeumannomyces graminis var. tritici and Fusarium graminearum. Disease severity and the viable population of Rhizoctonia are reduced in suppressive soil but the causal agent is still present. The microbial populations in suppressive and non-suppressive soil appear to differ both in their functioning and composition. The control strategy is developed through manipulation of the existing soil biota with farming practices.
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Intercropping with resistant cultivars reduces early blight and root knot disease on susceptible cultivars of tomato (Lycopersicon esculentum)Smith, Linley Joy. January 2002 (has links)
Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains viii, 77 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 71-77).
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AN INVESTIGATION OF A SAGUARO SEEDLING DISEASEBooth, John Austin, 1929- January 1962 (has links)
No description available.
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The effects of trifluralin and Rhizoctonia solani on cotton seedlingsAgamalian, Harry Samson, 1929- January 1964 (has links)
No description available.
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Development of a specific and reliable molecular marker to detect Stachybrotyrs [i.e. Stachybotrys] elegans, a destructive mycoparasite of Rhizoctonia solaniWang, Xiben, 1973- January 2000 (has links)
Stachybotrys elegans (Pidopl.) W. Gams is a destructive mycoparasite of the soilborne plant pathogen Rhizoctonia solani. It colonizes effectively all types of cells of R. solani, and is considered as an effective biological control agent (BCA). Monitoring the presence of this mycoparasite in the field trials requires the development of a reliable and sensitive diagnostic assay that is able to detect and differentiate the BCA from their target host. To achieve this, designed SCAR (sequenced characterized amplified regions) primers designated as SE-13F and SE-13R were generated from informative RAPD markers. They were tested in conventional PCR assays alone or in conjunction with the recently developed SCAR primers (SBU-177/336) designed for Rhizoctonia solani (Kuhn) on several types of DNA. These included DNA extracted from pure cultures, co-cultures of the BCA and the pathogen, plant tissue and several types of soils inoculated with both the BCA and the pathogen. Irrespective of the type of the biological samples from which the DNA was extracted, the primers SE-13F/SE-13R successfully amplified only S. elegans. No cross-reaction was observed when the primers were used to amplify DNA of other fungi, bacteria and plant tissues. Likewise, the primer pair SBU-177/336 detected only its target organism, i.e., R. solani. The detection limit using these primers on amplified DNA was as little as 1 pg DNA extracted from pure cultures of S. elegans, 100 pg DNA extracted from greenhouse soil and 33 pg DNA extracted from natural soil. This work is the first report on the development of SCAR markers for the BCA, S. elegans. These molecular markers offer not only an alternative diagnostic assay to conventional detection methods, but also the possibility of being used in ecological studies.
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The influence of Zn nutritional status on the severity of Rhizoctonia root rot of cereals/ by Pongmanee Thongbai.Thongbai, Pongmanee January 1993 (has links)
Bibliography: leaves 149-173. / xiv, 173 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1994
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Characterisation of rhizoctonia barepatch decline / Bronwyn Meg Wiseman.Wiseman, Bronwyn Meg January 1996 (has links)
Bibliography: leaves 184-209. / xx, 219 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis describes the occurence of natural, biologically based suppression of Rhizoctonia barepatch in a direct drilled system at Avon, South Australia. The supressive characteristics are transferable, removed by biocidal treatments, and active against increasing doses of R. solani AG-8, Gaeumannomyces graminis var. tritici and Fusarium graminearum. Disease severity and the viable population of Rhizoctonia are reduced in suppressive soil but the causal agent is still present. The microbial populations in suppressive and non-suppressive soil appear to differ both in their functioning and composition. The control strategy is developed through manipulation of the existing soil biota with farming practices. / Thesis (Ph.D.)--University of Adelaide, Dept. of Soil Science, 1996
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Action of fluorescent pseudomonads against seedling diseases in cucumber caused by Pythium ultimum (Trow) and Rhizoctonia solani KühnSalman, Mazen N. A. January 2007 (has links)
Zugl.: Hohenheim, Univ., Diss., 2007
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Management approaches in organic potato and tomato production interactive impacts of agronomical measures on plant nutrition, plant health and yieldSchulte-Geldermann, Elmar. Unknown Date (has links)
Univ., Diss., 2008--Kassel.
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Bodenbedingte Ursachen für das Auftreten der Rhizoctonia-RübenfäuleKühn, Jürgen. Unknown Date (has links)
Techn. Universiẗat, Diss., 2006--München.
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