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 21 for “"azoxystrobin"”.
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Fungicide Sensitivity of Erysiphe necator and Plasmopara viticola from Virginia and nearby states
… disc bioassays, 92% of the DM isolates were QoI (azoxystrobin)-resistant, but none were resistant to mefenoxam. Eighty-two percent of the PM isolates were QoI-resistant, but none were resistant to boscalid and quinoxyfen. The frequency of the G143A point mutation, which confers high levels of QoI …
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Control of anthracnose (caused by Colletotrichum gloeosporioides s.l.) on mango in Senegal by fungicides and biofungicides
… respectively, whereas thiophanate methyl and azoxystrobin provided 77% and 78% control, respectively. Disease severities of all treatments were significantly lower than that of the control. Thiophanate methyl and azoxystrobin produced more disease-free mangoes (64 and 62%, respectively) than …
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Reducing copper and chlorothalonil in staked tomato production on Virginia's Eastern Shore
… The development of new fungicides, such as azoxystrobin and acibenzolar-S-methyl, which have more favorable environmental fate characteristics and are used at much lower rates, may provide viable alternatives to copper and chlorothalonil. Using a disease forecasting system, such as Tomcast, …
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Interactions of post emergence herbicides, strobilurin fungicides and Rhizoctonia root rot of soybean
… imazethapyr), and fungicide seed treatments (azoxystrobin, pyraclostrobin, trifloxystrobin). Inoculum of R. solani (AG 2-2) was planted along with treated seed. Herbicides were applied at recommended field rates at the V4 growth stage. Plant stand was rated after seedling emergence, and …
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Imaging the distribution of agrochemicals in plants by MALDI-MSI.
… plants. The agrochemicals of interest are azoxystrobin, mesotrione, fluazifop-p butyl and nicosulfuron. Azoxystrobin is a broad spectrum fungicide which inhibits mitochondrial respiration in fungi; the compound is absorbed through the roots and translocated in the xylem. Mesotrione is a …
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Characterization of oomycete species causing soybean diseases in Illinois and management applications
… spp. were sensitive to metalaxyl, mefenoxam, azoxystrobin, and ethaboxam. There were Pythium isolates insensitive to azoxystrobin and ethaboxam.
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Characterization, development of a field inoculation method, and fungicide sensitivity screening of the Pythium blight pathogen of snap bean (Phaseolus vulgaris L.)
… active ingredients at the labeled rates, except azoxystrobin. At 100μg/ml azoxystrobin, one P. deliense isolate had 8.9% GR. All isolates had 100% GR to copper hydroxide at 100μg/ml, and the lowest GR on mefenoxam-amended medium was 91.9%. At 100μg/ml cyazofamid, all P. deliense isolates were …
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Characterizing soybean rust resistance in Glycine tomentella and effect of temperature and a fungicide on Phakopsora pachyrhizi uredinia production of urediniospores
… were exposed to varying concentrations of azoxystrobin, the effective concentration 50 values ranged from 0.01 to 0.40 ppm with an isolate from Arkansas having a significantly (P < 0.05) higher value than the other isolates. Detached inoculated leaflets incubated on azoxystrobin amended …
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Analysis of Strobilurin Fungicides, Neonicotinoid Insecticides and Degradation Products in Atmospheric Particles
… samples worldwide. For strobilurin fungicides, azoxystrobin, kresoxim methyl, trifloxystrobin, and pyraclostrobin were detected in the particle phase. The highest detection frequency was shown for pyraclostrobin (60% in 2016 and 78% in 2018) with the highest concentration (9.82 pg/m3 and 9.87 …
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Investigation of Biotic and Abiotic Factors Affecting Double-Cropped Corn (Zea mays L.) Production in Virginia
… in 1999 and 2000), and fungicide treatments (azoxystrobin or propiconazole). Response variables included yield, moisture at harvest, grain test weight, damage by European corn borer (Ostrinia nubilalis), damage by corn earworm (Heliothis zea), disease progress curves for gray leaf spot …
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Investigation of Wine Grape Cultivar and Cluster Developmental Stage Susceptibility to Grape Ripe Rot Caused by Two Fungal Species Complexes, <i>Colletotrichum gloeosporioides</i>, and <i>C. acutatum</i>, and the Evaluation of Potential Controls
… as well as some of newer formulations such as azoxystrobin and tetraconazole were identified as excellent products against ripe rot of grape. Four additional materials were identified as good potential candidates to investigate further. The information gained from these studies will help …
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Evaluation of race population distribution, fungicide sensitivity, and fungicide control of Exserohilum turcicum, the causal agent of northern leaf blight of corn
… days before and after fungicide application with azoxystrobin, propiconazole, prothioconazole, or pyraclostobin. In field trials with low disease severity, no significant differences in treatments were observed for NLB severity ratings, stalk rot severity, plant maturity, or yield. In field corn …
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Identification of fungal species causing powdery mildew on cucurbits, determination of the genetic and pathogenic variations of the fungi and their sensitivity to major powdery mildew fungicides
… tested. Our data showed reduced effectiveness of azoxystrobin, from the QoI group, for the control of cucurbits powdery mildew. Triflumizole (DMI group), penthiopyrad (SDHI group), quinoxyfen (quinolines group), cyflufenamid (unknown mode of action group of U6) all effectively controlled powdery …
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Utilizing spring dead spot mapping to assess precision management strategies, topographical epidemiology, economic opportunities
… or a combination product of pydiflumetofen + azoxystrobin + propiconazole. Conversely, this strategy was not cost-effective with annual applications of tebuconazole due to its low cost per application. These findings suggest that adopting precision treatment methods with appropriate fungicides …
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Cercospora sojina: over-winter survival and fungicide resistance
… program was initiated, in which sensitivities to azoxystrobin, pyraclostrobin, and trifloxystrobin were determined in C. sojina isolates collected prior to QoI fungicide use on soybean (baseline population) and C. sojina isolates collected from soybean fields in 2007, 2008, and 2009. For the …
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Impact of Management Practices on Cold Tolerance of Ultradwarf Bermudagrass Putting Greens
… fungicide applications of chlorothalonil and azoxystrobin improved UDB quality throughout winter dormancy and spring green up. The addition of a pigmented phosphonate significantly improved winter and spring UDB quality. The addition of acibenzolar-S-methyl to fungicide programs did not …
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Understanding variability associated with corn grain yield response to foliar fungicide application
… inhibitor (QoI) fungicide (e.g., pyraclostrobin, azoxystrobin, and trifloxystrobin) fungicide application is becoming a common practice in corn production systems. The strobilurin class of fungicides inhibits mitochondrial respiration in fungal cells, and preventing plant pathogen infection. In …
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Characterization of Alternaria alternata isolates causing brown spot of potatoes in South Africa
… of the eight isolates had reduced sensitivity to azoxystrobin. Sequence analysis of the cytochrome b gene revealed a mutation that led to an amino acid substitution which consequently led to reduced sensitivity. This study will lead to a better understanding of this new disease of potatoes that …
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Impactos dos agrotóxicos na contaminação ambiental da produção de hortaliças no Baixo Rio Natuba, Pernambuco
… foram identificados quatro ingredientes ativos: Azoxystrobin, Imidacloprid, Phenthoate e Tebuconazole. Em 18 poços de inspeção as concentrações dos princípios ativos estavam acima do máximo permitido segundo a Portaria nº 2914/2011 do Ministério da Saúde. No solo e nas hortaliças foram …
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Effect of fungicide seed treatments on Fusarium virguliforme and development of sudden death syndrome in soybean
… combining mefenoxam + thiophanate-methyl + azoxystrobin + B. pumilus + prothioconazole + fludioxonil compared to the non-treated control; however, the reduction in Fv DNA did not improve root growth or decrease SDS foliar symptoms compared to the non-treated control. The Fv DNA …
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