Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"diuron"”.
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The effect of 2,4-D, atrazine, and diuron on algal physiology and population dynamics
… significant concentrations of atrazine, diuron, and 2,4-D. Field results would indicate that all three herbicides have a significant effect on species diversity and species dominance. Atrazine and diuron were particularly effective in decreasing diversity in concentrations of 10 ppb to …
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Assessing natural and management-induced patterns of herbicide sorption and risks in catchments: a soil landscape modeling approach.
… factors influence the spatial distribution of diuron sorption affinity? and d) How is the fate of diuron influenced by the spatial variability of soil and key fate properties? The objectives of this thesis were: a) to determine whether a ‘smoothing’ algorithm can enhance the accuracy of a …
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Versuche zur Gewinnung von katalytischen Antikörpern zur Hydrolyse von Arylcarbamaten und Arylharnstoffen
… Substratabnahme bei der Hydrolyse wurden Anti-Diuron-Antikörper hergestellt. Einer der Antikörper (B91-CG5) ist spezifisch für das Herbizid Diuron und hat einen IC50-Wert von 0,19 µg/l und eine untere Nachweisgrenze von 0,04 µg/l. Ein anderer Antikörper (B91-KF5) reagiert kreuz mit einer …
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Thermodynamics of Mobile Order Theory: Solubility and Partition Aspects
… theory. Solubilities of pesticides (monuron, diuron, and hexachlorobenzene), polycyclic aromatic hydrocarbons (biphenyl, acenaphthene, and phenanthrene), and the organometallic ferrocene were studied in a wide array of solvents. Mobile order theory predictive equations were derived and percent …
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Estrategias de manejo de malezas acuáticas sumergidas en canales de riego
… se evaluó mediante la aplicación de diuron en canales de riego y diuron, metsulfuron, imazapir y ácido acético en sedimento seco colocado en acuarios. Solo los tratamientos de diuron en acuarios redujeron el crecimiento de C. contraria, aunque por efecto del lavado continuo de este …
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Dessecação em pré-colheita na produtividade e qualidade fisiológica de sementes de feijão-caupi
… após morte das plantas (G+PQ) e mistura paraquat+diuron. No tratamento controle não houve aplicação de dessecante e a colheita foi realizada com 100% de vagens na coloração marrom. Avaliou- se o grau de umidade das sementes, massa de cem sementes, teste de uniformidade, produtividade, no de dias …
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Ação de herbicidas sobre cultivares de cana-de-açúcar e na atividade da microbiota do solo
… herbicidas clomazone, tembotrione, tebuthiuron, diuron, trifloxysulfuron-sodium, sulfentrazone, hexazinone e MSMA sobre as cultivares de cana-de-açúcar: RB925345, RB855156, RB867515 e SP80-1816. Aos 80 dias após o plantio da cultura (45 dias após aplicação dos herbicidas) determinou-se altura, …
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Resistance Screening and Control Options for Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) in Cotton (Gossypium hirsutum)
… fomesafen, flumioxazin, fluometuron, prometryn, diuron, and pendimethalin applied at four preplant timings (21, 14, 7, and 0 days). The Liberty Link herbicide programs, utilized glufosinate, S-metolachlor, fomesafen, fluometuron, prometryn, flumioxazin, diuron, and pendimethalin to control Palmer …
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Cotton Injury Due to Soil- or Foliar-Applied Herbicides: An Assessment Based on the Influences of Genetic, Agronomic, and Environmental Factors
… Low seed vigor increased the risk of injury from diuron, fomesafen, and fluometuron. Increasing planting depth from 0.64 to 2.5 cm resulted in greater cotton injury from fomesafen but proved inconsequential when applying diuron or fluometuron preemergence. Cotton injury from glufosinate was …
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The Effects of Chemical Modification Upon Herbicide Binding in Thylakoid Membranes of Spinacia Oleracea (Spinach) and Amaranthus Hybridus (Pigweed), and The Photochemical Reaction Center of Rhodobacter Sphaeroides R26
… the classic Photosystem II inhibitors such as diuron and atrazine. It does not bind to the same binding domain as these inhibitors. It does not bind covalently, suggesting that the mechanism of inhibition in this system is a novel one for this protein modification reagent.
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Prickly Sida (Sida spinosa L.): Biology and In-Crop and Post-Harvest Management Programs
… prickly sida present after crop harvest included diuron and linuron applied with glufosinate, paraquat, or glyphosate (75 to 85% control); diuron, atrazine, or 2,4-D ester applied with paraquat (74 to 77%); and 2,4-D ester and dicamba applied with glyphosate (75%).
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Evaluation of Crop Tolerance and Weed Control in Corn and Grain Sorghum with Atrazine Replacements
… treatments. However, when applied postemergence, diuron, fluometuron, linuron, metribuzin, prometryn, propazine, and simazine did not cause grain sorghum to suffer yield loss when compared to atrazine-containing treatments. When applied preemergence in corn, diuron, linuron, metribuzin, and …
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Red morningglory (Ipomoea coccinea L.) biology and management in sugarcane
… at least 90 % with atrazine at 3.36 kg ai/ha, diuron plus hexazinone at 1.57 + 0.44 kg ai/ha, flumioxazin at 0.14 kg ai/ha, sulfentrazone at 0.21 kg ai/ha, and metribuzin at 2.52 kg ai/ha. At 49 DAT, atrazine at 4.48 kg/ha provided only 70 % control, which was equivalent to that for diuron plus …
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Acute Toxicity and Sub-Lethal Effects of Non-Point Source Pollutants on Invertebrates
… the acute toxicity and sub-lethal effects of diuron, CuPT, B(a)P, and styrene in the mud snail, Ilyanassa obsoleta, the American oyster, Crassostrea virginica, the sea urchin, Lytechinus variegatus, and/or the barnacle, Amphibalanus (= Balanus) amphitrite. In addition, the general effects of …
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Comparative studies on the modes of action of SC-0224 and glyphosate
… with the action of glyphosate, TMS-I and diuron [3-(3,4-dichorophenyl)-1,1-dimethylurea]. SC-0224, glyphosate and TMS-I did not inhibit the Hill reaction at concentrations up to 10 mM; whereas, diuron caused an almost total inhibition at 0.10 mM. The results of this study indicate that …
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Interactions of paraquat and nitrodiphenylether herbicides with the chloroplast photosynthetic electron transport in the activation of toxic oxygen species
… in the presence of the following PET inhibitors: diuron, dibromothymoquinone, and bathophenanthroline. It cannot photoreduce PSI in the presence of cyanide, a PET inhibitor. These data indicate that the site of electron donation is after the plastoquinone pool. Ascorbate is not required for the …
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Aspects of marine fouling in western Cape waters
… bacterial proliferation, while a herbicide, diuron, was employed to prevent diatom growth. The colonization by invertebrates was monitored on these surfaces and compared to surfaces where primary film development was normal, or where it was advanced by pre-culturing in laboratory seawater. It …
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Ökotoxikologische Spurenuntersuchungen mehrerer nordbayerischer Fließgewässer
… Leinleiter und Wiesent Metolachlor, Metazachlor, Diuron und Isoproturon messen. Ihre Konzentrationen lagen dabei im niedrigen ng/L-Bereich. Atrazin, Diuron und Isoproturon kommt eine besondere Bedeutung zu, da sie in der Liste der "prioritär gefährlichen Substanzen" in der europäischen …
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Use of Fluridone for Control of Palmer Amaranth (Amaranthus palmeri) in Cotton (Gossypium hirsutum) and on Ditchbanks
… of several soil-residual herbicides most notably diuron, fluometuron, fomesafen, and metolachlor. Fluridone inhibits phytoene desaturase in plants, and is unique in that its mechanism of action (MOA) is not currently registered for use in cotton. Studies were conducted to determine the length of …
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Immuntechnologische Verfahren zum Aufbau homogener Immunoassays sowie zur Selektion Antikörper produzierender Zellen
… für die Konzentrationsbestimmung des Herbizides Diuron etabliert. Die erreichten Sensitivitäten erlauben die praktische, immundiagnostische Anwendung des Systems. Ein Dihapten-Konjugat wurde ebenfalls zum Aufbau eines Verfahrens zur Selektion Antikörper produzierender Zellen eingesetzt. Die …
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