Chemiese beheer van Bromus diandrus Roth. in Triticum aestivum L. met clomazone en foraat

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dc.contributor.advisorAgenbag, G. A.en_ZA
dc.contributor.authorBarry, Renaldo Jeanen_ZA
dc.contributor.otherStellenbosch University. Faculty of AgriSciences. Department of Agricultural Economics.en_ZA
dc.date.accessioned2012-08-27T11:36:51Z
dc.date.available2012-08-27T11:36:51Z
dc.date.issued1996-03
dc.descriptionThesis (MScAgric)--Stellenbosch University, 1996.
dc.description.abstractENGLISH ABSTRACT: Three glasshouse trials were conducted at the Welgevallen experimental farm to determine whether phorate protects Triticum aestivum L. against damage by clomazone without reducing the effect on Bromus diandrus Roth., whether there are differences in the tolerance of wheat cultivars against clomazone, and whether soil type has an Influence on the effectiveness of clomazone and phorate. With the placing of phorate in the planting furrows, clomazone has given satisfactory control of Bromus diandrus Roth., while phorate gave some protection to T. aestivum L. against clomazone. Slight differences were found in the sensitivity of wheat cultivars and barley (cv. Clipper) against clomazone. However, in practice these differences should not be significant. In sandy soil clomazone had a short residual effect, while it had a longer residual effect in clay soil. This can be contributed to greater adsorption of clomazone in the clay soil which may present problems in successive crops. It seems as if volatilization of clomazone in the glasshouse contributed to the damage of T. aestivum L. The recovery of I. aestivum L. however indicates that the use of phorate as a protectant against damage by clomazone is a possibility. Further trials however are needed under field conditions.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Drie glashuis-proewe is uitgevoer te Welgevallen-proefplaas om te bepaal of foraat beskerming verleen aan Triticum aestivum L. teen beskadiging deur clomazone sonder om die effektiwiteit teenoor Bromus diandrus Roth. te verlaag, of daar verskille in kultivargevoeligheid is teenoor clomazone en foraat, en of grondtipe 'n invloed het op die effektiwiteit van clomozone en foraat. Met die plasing van foraat in plantvoor het clomazone bevredigende beheer verskaf van B. diandrus Roth., terwyl foraat 'n mate van beskerming aan T. aestivum L. verleen het. Geringe verskille het voorgekom in die gevoeligheid van die koringkultivars en Clippergars teenoor clomazone, maar sal in die praktyk waarskynlik geen betekenisvolle effek he nie. In die sandgrond het comazone 'n kort nawerking gehad, terwyl dit 'n langer nawerking gehad het op die kleigrond. Dit kan toegeskryf word aan groter adsorpsie op die kleigrond wat probleme kan veroorsaak vir opvolggewasse. Alhoewel dit moontlik is dat vervlugtiging van clomazone in die glashuis bygedrae het tot beskadiging van T. aestivum L., toon die herstel van T. aestivum L.-plante dat foraat as beskermer teen clomazone mootnlikhede inhou. Verdere proewe sal egter onder veldtoestande uitgevoer moet word.af_ZA
dc.description.versionMasters
dc.format.extent112 pages : illustrations.en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/55024
dc.language.isoaf_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectWheat -- Diseases and pests -- Controlen_ZA
dc.subjectBromegrasses -- Controlen_ZA
dc.subjectHerbicide-resistant cropsen_ZA
dc.subjectWeeds -- Controlen_ZA
dc.subjectHerbicidesen_ZA
dc.subjectDissertations -- Agricultureen_ZA
dc.titleChemiese beheer van Bromus diandrus Roth. in Triticum aestivum L. met clomazone en foraaten_ZA
dc.typeThesis
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