Academic literature on the topic 'Quizalofop'
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Journal articles on the topic "Quizalofop"
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Lancaster, Zachary D., Jason K. Norsworthy, Robert C. Scott, Edward E. Gbur, and Richard J. Norman. "Evaluation of quizalofop tank-mixtures for quizalofop-resistant rice." Crop Protection 116 (February 2019): 7–14. http://dx.doi.org/10.1016/j.cropro.2018.10.004.
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Lancaster, Zachary D., Jason K. Norsworthy, and Robert C. Scott. "Sensitivity of Grass Crops to Low Rates of Quizalofop." Weed Technology 32, no. 3 (2018): 304–8. http://dx.doi.org/10.1017/wet.2018.14.
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AbstractWith the widespread occurrence of herbicide-resistant weeds in midsouthern U.S. rice, new technologies are needed to achieve adequate weed control. A new non–genetically modified rice trait has been commercialized that is resistant to quizalofop, an acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicide. The addition of quizalofop-resistant rice to production systems will increase the use of quizalofop, possibly increasing the risk for injury to other grass crops. Experiments were conducted in 2014 and 2015 to determine the sensitivity of corn, grain sorghum, and conventional rice to low rates of quizalofop (1/10× to 1/200× of 160 g ai ha–1). Conventional rice was not affected by quizalofop rate or application timing. Corn displayed the greatest response to the 1/10× quizalofop rate at the two- to three-leaf stage, with 50% to 65% injury and 35% to 37% relative yield compared to the nontreated check. Grain sorghum was injured 31% to 34% by the 1/10× quizalofop rate applied at the two- to three-leaf stage, and there was 20% to 26% injury at the panicle exertion growth stage. The highest rate of quizalofop at the panicle exertion stage reduced yields 28% to 46%. Overall, risk for injury to any of the three evaluated crops from quizalofop appears low, with greatest injury observed at the highest quizalofop drift rate, with minimal injury at lower rates.
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Lancaster, Zachary D., Jason K. Norsworthy, and Robert C. Scott. "Evaluation of Quizalofop-Resistant Rice for Arkansas Rice Production Systems." International Journal of Agronomy 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/6315865.
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Due to the ongoing evolution of herbicide-resistant weeds, new technologies are needed to maintain effective levels of control. A new rice variety that will be resistant to quizalofop, an acetyl coenzyme A carboxylase- (ACCase-) inhibiting herbicide, is currently under development. With the anticipated launch of this technology in 2018, multiple experiments were conducted to determine effectiveness of the quizalofop-resistant rice system for common grass weed species found in Arkansas rice production. One hundred and twenty-six barnyardgrass populations were collected across Arkansas and treated with quizalofop at 80 g ai ha−1 to determine a baseline of response. All populations evaluated were effectively controlled (≥92%) by quizalofop, with only 13 populations resulting in lower than 98% control. A greenhouse and field trial were conducted to compare efficacy of quizalofop to currently labeled rice graminicides for control of common rice grass weeds. Results from the greenhouse experiment showed that quizalofop treatments resulted in greater efficacy of common grass weeds compared to cyhalofop or fenoxaprop. This was especially apparent at the larger grass growth stages. A field experiment conducted compared season-long weed control programs of quizalofop to fenoxaprop and cyhalofop. The quizalofop-containing treatments were no better than fenoxaprop and cyhalofop for barnyardgrass and broadleaf signalgrass control. Barnyardgrass and broadleaf signalgrass control were greater than 96% for all herbicide treatments. An additional field experiment was conducted to determine the best rate structure for sequential applications of quizalofop in rice. Sequential applications of quizalofop at 120 g ha−1 followed by 120 g ha−1 two weeks later resulted in the highest barnyardgrass and broadleaf signalgrass control. Likewise, applying the full seasonal use rate of 240 g ha−1 of quizalofop resulted in greater control compared to 200 and 160 g ha−1. Results from this research indicate a strong benefit from quizalofop use in rice.
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Culpepper, A. Stanley, Alan C. York, David L. Jordan, Frederick T. Corbin, and Yvonna S. Sheldon. "Basis for Antagonism in Mixtures of Bromoxynil Plus Quizalofop-P Applied to Yellow Foxtail (Setaria glauca)." Weed Technology 13, no. 3 (1999): 515–19. http://dx.doi.org/10.1017/s0890037x00046121.
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Antagonism of quizalofop-P efficacy on annual grasses by bromoxynil has been noted in both the field and greenhouse. Laboratory experiments were conducted on yellow foxtail (Setaria glauca) to determine the effect of mixing bromoxynil with the ethyl ester of quizalofop-P on absorption, translocation, and metabolism of14C-quizalofop-P Applying bromoxynil in mixture with quizalofop-P reduced14C-label absorption from 63 to 51%, 73 to 52%, 77 to 68%, and 90 to 80% at 4, 8, 24, and 96 h after treatment, respectively. Translocation of14C-label from the treated leaf into the shoot above or shoot below was unaffected by bromoxynil. However, translocation into the roots was reduced from 0.9 to 0.4% and 1.0 to 0.5% at 4 and 8 h after treatment, respectively, but differences were not noted at 0.5, 1, 24, and 96 h after treatment. Bromoxynil increased deesterification of quizalofop-P-ethyl into quizalofop-P acid from 45 to 60% in the shoot above the treated leaf. However, bromoxynil did not affect metabolism of quizalofop-P in the treated leaf or shoot below the treated leaf. These results suggest that antagonism of quizalofop-P activity by bromoxynil is primarily due to decreased absorption of quizalofop-P, whereas effects on translocation and metabolism were minor.
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Manthey, Frank A., Edward F. Szelezniak, Zbigniew M. Anyszka, and John D. Nalewaja. "Foliar Absorption and Phytotoxicity of Quizalofop with Lipid Compounds." Weed Science 40, no. 4 (1992): 558–62. http://dx.doi.org/10.1017/s0043174500058136.
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Experiments were conducted to determine the effect of triglycerides, free fatty acids (FFA), and fatty acid methyl esters (FAME) on the foliar absorption, translocation, and phytotoxicity of quizalofop. Absorption, translocation, and phytotoxicity of quizalofop in oats were greater when quizalofop was applied with FFA or FAME than with their respective triglycerides. Triglycerides and FFA generally enhanced quizalofop absorption and translocation more when they contained unsaturated than saturated fatty acids. Methylation of the fatty acids reduced differences among fatty acids, but methyl stearate and methyl linolenate enhanced absorption of quizalofop less than the other FAME for oats and yellow foxtail. Quizalofop absorption and phytotoxicity to oats were greater when applied with sunflower oil, sunflower oil FFA, and sunflower oil FAME than with the corresponding linseed oil derivatives. Emulsifier generally reduced differences between linseed oil and sunflower oil derivatives in their enhancement of absorption, translocation, and phytotoxicity of quizalofop.
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Ruizzo, Michael A., and Stanley F. Gorski. "Inhibition of Chloroplast-Mediated Reactions by Quizalofop Herbicide." Weed Science 36, no. 6 (1988): 713–18. http://dx.doi.org/10.1017/s0043174500075718.
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A mechanism of action of the ethyl ester of quizalofop was determined in monocotyledonous and dicotyledonous plants. Quizalofop inhibited electron transport in both cucumber and corn chloroplasts. In corn, inhibition of electron transport was more pronounced under phosphorylating conditions. Half-maximal inhibition (I50) of ATP synthesis was achieved with a 75-μM concentration of quizalofop in coupled corn chloroplasts. Cucumber chloroplast ATP synthesis was not inhibited at herbicide concentrations up to 100 μM. Corn chloroplast fractions contained greater quantities of bound [U-14C] quizalofop ester following incubation in light and dark assays. Thin-layer radiochromatograms of14C-labeled quizalofop showed no metabolism or degradation of parent ester incubated in light and dark chloroplast-mediated reactions. In our studies, it is apparent that the inhibitory action of quizalofop was due to the parent ester. The ester formulation of quizalofop appears to exhibit multiple activity in susceptible plant chloroplasts.
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Bandeira, Hugo Falkyner Silva, José Maria Arcanjo Alves, Paulo Roberto Ribeiro Rocha, Anderson Strucker, Luciana Baú Trassato, and Andresa De Jesus Vieira. "Crescimento inicial do feijão-caupi após aplicação de herbicidas em pós-emergência." Revista Brasileira de Herbicidas 16, no. 2 (2017): 112. http://dx.doi.org/10.7824/rbh.v16i2.503.
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Objetivou-se neste trabalho avaliar a tolerância do feijão-caupi, cultivar BSR Aracê, a diferentes herbicidas aplicados em pós-emergência, na fase inicial de crescimento das plantas. O experimento foi conduzido em casa de vegetação, em delineamento inteiramente casualizados, com quatro repetições. Os tratamentos avaliados foram: haloxyfop (60 g ha-1), lactofen (180 g ha-1), chlorimuron-ethyl (17,5 g ha-1), bentazon (576 g ha-1), bentazon + imazamox (600 + 28 g ha-1), imazethapyr (100 g ha-1), fomesafen (250 g ha-1), quizalofop-P-ethyl (62,5 g ha-1), lactofen + quizalofop-P-ethyl (180 + 62,5 g ha-1), fomesafen + quizalofop-P-ethyl (250 + 62,5 g ha-1), e uma testemunha. Foram realizadas avaliações visuais de intoxicação, altura das plantas, massa seca foliar, da haste, raiz, massa seca total e área foliar. Os herbicidas haloxyfop e quizalofop-P-ethyl causaram os menores danos ao desenvolvimento das plantas de feijão-caupi. O chlorimuron-ethyl provocou danos severos à cultura, interrompendo seu crescimento. As misturas lactofen + quizalofop-P-ethyl e fomesafen + quizalofop-P-ethyl provocaram os danos elevados à cultura, sendo que a mistura lactofen + quizalofop-P-ethyl, promoveu a morte das plantas do feijão-caupi. Concluiu-se que o feijão-caupi cv. BRS Aracê têm tolerância aos herbicidas haloxyfop e quizalofop-P-ethyl, e tolerância moderada ao formulado bentazon + imazamox e ao herbicida imazethapyr. As misturas lactofen + quizalofop-P-ethyl e fomesafen + quizalofop-P-ethyl potencializam o efeito dos herbicidas sobre a cultura do feijão-caupi. A mistura lactofen + quizalofop-P-ethyl e o herbicida chlorimuron-ethyl provocam danos irreversíveis à cultura do feijão-caupi.
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Rustom, Samer Y., Eric P. Webster, Benjamin M. McKnight, and David C. Blouin. "Evaluation of sequential applications of quizalofop-p-ethyl and propanil plus thiobencarb in acetyl-coA carboxylase inhibitor–resistant rice." Weed Technology 34, no. 4 (2020): 506–10. http://dx.doi.org/10.1017/wet.2020.9.
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AbstractA field study was conducted in 2015 and 2016 at the H. Rouse Caffey Rice Research Station near Crowley, Louisiana, to evaluate the interactions of quizalofop and a mixture of propanil plus thiobencarb applied sequentially or mixed to control weedy rice and barnyardgrass. Visual weed control evaluations occurred at 14, 28, and 42 d after treatment (DAT). Quizalofop was applied at 120 g ai ha−1 at 7, 3, and 1 d before and after propanil plus thiobencarb were each applied at 3,360 g ai ha−1. In addition, quizalofop was applied alone and in a mixture with propanil plus thiobencarb at day 0. Control of red rice ‘CL-111’ and ‘CLXL-745’ was greater than 91% when quizalofop was applied alone at day 0, similar to control for quizalofop applied 7, 3, and 1 d prior to propanil plus thiobencarb at all evaluation dates. Control of the same weeds treated with quizalofop plus propanil plus thiobencarb applied in a mixture at day 0 was 70% to 76% at each evaluation date, similar to quizalofop applied 1 or 3 d after propanil plus thiobencarb. A similar trend in control of barnyardgrass by 88% to 97% occurred when quizalofop was applied alone and by 48% to 53% at 14, 28, and 42 DAT when the mixture was used. ‘PVL01’ rough rice yield was 4,060 kg ha−1 when treated with quizalofop alone; however, yield was reduced to 3,180 kg ha−1 when it was treated with quizalofop mixed with propanil plus thiobencarb at day 0, similar to PVL01 rice treated with quizalofop 1 or 3 d following the propanil plus thiobencarb application.
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Fipke, Marcus Vinícius, Anderson da Rosa Feijó, Natália Silva Garcia, et al. "Transgenerational Effect of Drought Stress and Sub-Lethal Doses of Quizalofop-p-ethyl: Decreasing Sensitivity to Herbicide and Biochemical Adjustment in Eragrostis plana." Agriculture 12, no. 3 (2022): 396. http://dx.doi.org/10.3390/agriculture12030396.
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(1) Background: Eragrostis plana Ness is a invasive C4 perennial grass in South America and very adaptable to environmental stresses. Our hypothesis is that there is a transgenerational cross-talk between environmental stresses and weed response to herbicides. This study’s objectives were to: (1) evaluate if E. plana primed by drought stress (DRY), a sub-lethal dose of quizalofop-p-ethyl (QPE), or a combination of both drought and herbicide stresses (DRY × QPE), produce a progeny with decreased sensitivity to quizalofop and (2) investigate the potential mechanisms involved in this adaptation; (2) Methods: A population of E. plana was isolatedly submitted to treatments for drought, quizalofop or drought plus quizalofop for two generations. The progenies were analyzed for sensitivity to the herbicide quizalofop and performed biochemical, chromatographic and molecular analyses.; (3) Results: In the G2 generation, the quizalofop-treated CHK population had reduced stomatal conductance and increased hydrogen peroxide and lipid peroxidation. On the other hand, there was no change in stomatal conductance, hydrogen peroxide level, and lipid peroxidation in the quizalofop-treated DRY population. In addition, this population had increased antioxidant enzyme activity and upregulated CYP72A31 and CYP81A12 expression, which was accompanied by reduced quizalofop-p-ethyl concentrations; (4) Conclusions: E. plana demonstrated a capacity for transgenerational adaptation to abiotic stresses, with the population exposed to drought stress (DRY) becoming less sensitive to quizalofop-p-ethyl treatment.
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De Souza Cruz, Anna Bárbara, José de Anchieta Alves de Albuquerque, Paulo Roberto Ribeiro Rocha, et al. "Effect of the use of pre- and post-emergence herbicides on nodulation and production of cowpea (Vigna unguiculata L.) in the Amazonian savannah." Agronomía Colombiana 38, no. 2 (2020): 280–86. http://dx.doi.org/10.15446/agron.colomb.v38n2.82196.
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As a control measure against weeds, the use of herbicides is an effective and inexpensive alternative. However, there are no products recommended for the cultivation of cowpea in Brazil, making it necessary to search for alternative solutions. The objective of this study was to evaluate the effect of herbicides applied in the pre- and post-emergence on cowpea nodulation and production under conditions of the Amazonian savannah. Two experiments were carried out in a randomized block design with four replicates, using the cowpea cultivar BRS Aracê subjected to the pre-emergence herbicides: Metribuzin, Sulfentrazone, Smetolachlor, Pendimethalin, Oxadiazon, Alachlor, Metribuzin + Pendimethalin, Metribuzin + Alachlor and Quizalofop-p-ethyl, Bentazon, Fomesafen, Imazethapyr, Imazamox + Bentazon, Quizalofop-p-ethyl + Imazethapyr, Quizalofop-p-ethyl + Imazamox and Quizalofop-p-ethyl + Bentazon, and post-emergence herbicides: Quizalofop-p-ethyl, Bentazon, Fomesafen, Imazethapyr, Imazamox + Bentazon, Quizalofop-p-ethyl + Imazethapyr, Quizalofop-p-ethyl + Imazamox, and Quizalofop-p-ethyl + Bentazon. The number of nodules in each plant, the dry matter of nodules, dry matter of roots and the grain yield were evaluated. According to the results obtained, the management of weeds in pre- or post-emergence according to the herbicide used affects the nodulation and productivity of cowpea under the conditions of the Amazonian savannah. The herbicides Metribuzin in preemergence,and Fomesafen and the mixture of Quizalofop-pethyl + Imazethapyr in post-emergence are not recommended for weed control in cowpea. The application of Oxadiazon, Alachlor, and Pendimethalin in pre-emergence can be considered interesting because they do not inhibit the development of the root system or the nodulation of cowpea which provides agreater grain yield. Regarding weed control strategies at postemergence, the application of the herbicide Imazethapyr and the combination of the herbicides quizalofop-p-ethyl + imazamox, Quizalofop-p-ethyl + Bentazon and Imazamox + Bentazon allow satisfactory levels of grain yield, root system development and nodulation of cowpea.
Dissertations / Theses on the topic "Quizalofop"
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Nou, Tepneth, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Development of an analytical method for the analysis of Quizalofop-p-ethyl and its metabolite Quizalofop acid in soybean by HPLC." THESIS_CSTE_SFH_Nou_T.xml, 2002. http://handle.uws.edu.au:8081/1959.7/606.
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Quizalofop-p-ethyl is a herbicide introduced in the mid 1980's with apparent low toxicity and is readily degradable.Quizalofop-p-ethyl is a member of the aryloxyphenoxypropionate group of herbicides and is a postemergence herbicide used for pulses (including soybean) and vegetables. The aim of the project discussed in this study is to develop an analytical method for the sensitive and reliable determination of quizalofop-p-ethyl and quizalofop acid in soybean using HPLC. Soybean is chosen as a typical agricultural crop. It has 15 to 20 percent oil content and is a crop which has been successfully used with theis herbicide.Two different methods of extraction, i.e. the solvent-solvent extraction method and solid phase extraction method, and clean up are discussed in some detail.<br>Doctor of Philosophy (PhD)
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He, Peter Yunfeng, University of Western Sydney, of Informatics Science and Technology Faculty, and of Science Food and Horticulture School. "Developement [sic] of an analytical method for the analysis of quizalofop-p-tefuryl and its metabolite quizalofop in soybean by HPLC." THESIS_FIST_SFH_He_P.xml, 2000. http://handle.uws.edu.au:8081/1959.7/603.
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There is currently no published method for the analysis of the herbicide quizalofop-p-tefuryl or its matabolite quizalofop in biological matrices. Quizalofp-p-tefuryl is a relatively new herbicide with apparent low toxicity and is readily degraded. Its metabolite also has herbicide activity. Quizalofop-p-tefuryl is a aryloxyphenoxypropionate and is a post emergence herbicide used for pulses and vegetables. This work reports on a method for the analyses of this pesticide residue and its metabolite in soybean using HPLC on a C-18 column with UV detection at 332 nm. Several methods are tried including some involving the use of solid phase extractors like silica, Florisil and strong cationic exchange cartridges. The main method developed uses an extraction solvent hexane: acetone: acetic acid for extracting the quizalofop-p-tefuryl and quizalofop from the ground soybean. The extracts are then made alkaline with NaOH and this deprotonates the quizalofop separating it from the hexane phase which contains the quizalofop-p-tefuryl. The hexane phase is extracted with ACN and quizalofop-p-tefuryl partitions into this phase. The quizalof-p-tefuryl is repartitioned into a fresh diethyl ether: hexane phase by adding a large quantity of H2O and NaCL to the ACN layer. The organic phase is washed and evaporated to dryness before being made up to volume with ACN for direct analysis by UV detection or by derivatising it to methoxychloroquinoxaline for fluorescence detection. Using the method that directly detects the analytes, for quizalofop-p-tefuryl and quizalofop at spike levels, the method has average recoveries. The precision of recoveries for both compounds is about 9%. The method is fairly robust. Time of analysis per analyte is about 2 hrs.<br>Master of Science
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He, Peter Yunfeng. "Developement [sic] of an analytical method for the analysis of quizalofop-p-tefuryl and its metabolite quizalofop in soybean by HPLC." Thesis, [Campbelltown, N.S.W. : The Author], 2000. http://handle.uws.edu.au:8081/1959.7/603.
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There is currently no published method for the analysis of the herbicide quizalofop-p-tefuryl or its matabolite quizalofop in biological matrices. Quizalofp-p-tefuryl is a relatively new herbicide with apparent low toxicity and is readily degraded. Its metabolite also has herbicide activity. Quizalofop-p-tefuryl is a aryloxyphenoxypropionate and is a post emergence herbicide used for pulses and vegetables. This work reports on a method for the analyses of this pesticide residue and its metabolite in soybean using HPLC on a C-18 column with UV detection at 332 nm. Several methods are tried including some involving the use of solid phase extractors like silica, Florisil and strong cationic exchange cartridges. The main method developed uses an extraction solvent hexane: acetone: acetic acid for extracting the quizalofop-p-tefuryl and quizalofop from the ground soybean. The extracts are then made alkaline with NaOH and this deprotonates the quizalofop separating it from the hexane phase which contains the quizalofop-p-tefuryl. The hexane phase is extracted with ACN and quizalofop-p-tefuryl partitions into this phase. The quizalof-p-tefuryl is repartitioned into a fresh diethyl ether: hexane phase by adding a large quantity of H2O and NaCL to the ACN layer. The organic phase is washed and evaporated to dryness before being made up to volume with ACN for direct analysis by UV detection or by derivatising it to methoxychloroquinoxaline for fluorescence detection. Using the method that directly detects the analytes, for quizalofop-p-tefuryl and quizalofop at spike levels, the method has average recoveries. The precision of recoveries for both compounds is about 9%. The method is fairly robust. Time of analysis per analyte is about 2 hrs.
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He, Peter Yunfeng. "Developement [sic] of an analytical method for the analysis of quizalofop-p-tefuryl and its metabolite quizalofop in soybean by HPLC /." [Campbelltown, N.S.W. : The Author], 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030624.101302/index.html.
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Nou, Tepneth. "Development of an analytical method for the analysis of Quizalofop-p-ethyl and its metabolite Quizalofop acid in soybean by HPLC." Thesis, View thesis View thesis, 2002. http://handle.uws.edu.au:8081/1959.7/606.
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Quizalofop-p-ethyl is a herbicide introduced in the mid 1980's with apparent low toxicity and is readily degradable.Quizalofop-p-ethyl is a member of the aryloxyphenoxypropionate group of herbicides and is a postemergence herbicide used for pulses (including soybean) and vegetables. The aim of the project discussed in this study is to develop an analytical method for the sensitive and reliable determination of quizalofop-p-ethyl and quizalofop acid in soybean using HPLC. Soybean is chosen as a typical agricultural crop. It has 15 to 20 percent oil content and is a crop which has been successfully used with theis herbicide.Two different methods of extraction, i.e. the solvent-solvent extraction method and solid phase extraction method, and clean up are discussed in some detail.
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Nou, Tepneth. "Development of an analytical method for the analysis of Quizalofop-p-ethyl and its metabolite Quizalofop acid in soybean by HPLC /." View thesis View thesis, 2002. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030401.172911/index.html.
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Thesis (Ph.D.) -- University of Western Sydney, [2002].<br>"A thesis presented to the University of Western Sydney in partial fulfillment of the requirements for the degree of Doctor of Philosophy " Includes references and appendices.
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Abit, Mary Joy Manacpo. "Grain sorghum response to postemergence applications of mesotrione and quizalofop." Diss., Kansas State University, 2010. http://hdl.handle.net/2097/7025.
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Doctor of Philosophy<br>Department of Agronomy<br>Kassim Al-Khatib<br>Growth chamber, greenhouse and field experiments using conventional grain sorghum were conducted to 1) evaluate the differential response of grain sorghum hybrids to POST application of mesotrione at various rates and application timings, and 2) determine the physiology of tolerance of grain sorghum hybrids to mesotrione. Sorghum response ranged from susceptible to tolerant. Mesotrione dose-response studies on four sorghum hybrids revealed that injury symptoms were greatest in Pioneer 85G01 and least in Asgrow Seneca. Mesotrione applied EPOST (early POST) injured sorghum more than when applied at MPOST (mid POST) or LPOST (late POST) timings. Observed injury symptoms were not well correlated with grain yield and were transient, thus injury did not reduce sorghum grain yield. Foliar absorption or translocation of mesotrione in tolerant hybrids did not differ with that of susceptible hybrids but metabolism was more rapid in tolerant than in susceptible hybrids. Initial grain sorghum injury was severe and will likely be a major concern to producers.
Field and growth chambers studies were conducted on herbicide-resistant grain sorghum to 1) determine the effect of quizalofop rates, application timings, and herbicide tank mixes on acetyl-coenzyme A carboxylase (ACCase)-resistant grain sorghum injury and yield, and 2) determine if herbicide metabolism is an additional mechanism that could explain the resistance of ACCase- and acetolactate synthase (ALS)-resistant grain sorghum. Depending on rate, EPOST application caused the greatest injury while the least injury occurred with LPOST application. Crop injury from quizalofop was more prominent at rates higher than the proposed use rate (62 g ha [superscript]-1) in grain sorghum. Sorghum grain yield was not affected by quizalofop regardless of rates or application timings. Weed control was greater when quizalofop was applied with other herbicides than when applied alone. Herbicide treatments except those that included 2,4-D caused slight to no sorghum injury. Results of the quizalofop metabolism study do not support the involvement of differential metabolism in the observed response of grain sorghum to quizalofop. Rimsulfuron metabolism by ALS-resistant sorghum is more rapid than the susceptible genotypes, thus explaining the observed rapid recovery of grain sorghum plants from rimsulfuron injury in the field.
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Poliquin, Bernard. "Quackgrass [Agropyron repens (L.) Beauv.] control in potatoes with quizalofop-ethyl." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59287.
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Field trials were conducted to evaluate the effect of quizalofop-ethyl on quackgrass plants in a potato cropping sequence. Fall and summer applications were compared for their quackgrass control potential. Season-long quackgrass control was obtained with quizalofop-ethyl at 96 g/ha following summer application. An increase in the rate of quizalofop-ethyl did not further improve control. Yields with quizalofop-ethyl at 96 g/ha were similar to standard treatments sethoxydim and fluazifop-butyl at recommended rates. Quackgrass control following a summer application was not maintained through to the following season. Fall applications did not result in adequate control of quackgrass the following season at any of the quizalofop-ethyl rates tested.
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Ruizzo, Michael A. "A mechanism of quizalofop-ethyl selectivity in monocotyledonous and dicotyledonous species /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487323583621383.
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Silva, Breno Araguaia Souza [UNESP]. "Influência de diferentes períodos de chuva após a aplicação de Clethodim, Quizalofope - P- Metilico e Haloxifope em pós emergência no controle de plantas daninhas." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/113795.
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000806747.pdf: 942149 bytes, checksum: 75e0218de7b7a904e05815a10bd22002 (MD5)<br>O trabalho teve por objetivo avaliar a influência de diferentes intervalos de tempo de chuva após a aplicação dos herbicidas clethodim, quizalofope -p- metilico e haloxifope em pós-emergência no controle de quatro espécies de plantas daninhas: B. decumbens, B. plantaginea, Cenchrus echinatus e Zea mays na cultura da soja. O delineamento experimental adotado foi inteiramente ao acaso e os tratamentos distribuídos em esquema fatorial 3 x 6 (três herbicidas e seis intervalos de tempo de chuva), totalizando dezoito tratamentos e quatro repetições, para cada espécie de planta daninha. Quatro experimentos foram conduzidos em casa de vegetação com duas plantas por vaso, no município de Pereiras, SP. As aplicações dos herbicidas foram realizadas em horários diferentes no decorrer do dia, de modo a obter os diferentes intervalos de tempo para simulação de chuva sobre as plantas. Foram realizadas avaliações de controle aos dias 3, 7, 14, 21 e 28 dias após a aplicação (DAA) dos herbicidas. Após a aplicação dos herbicidas as plantas daninhas foram submetidas a uma lâmina de chuva de 20 mm em cinco intervalos de tempo (15, 30, 60, 120 e 240 min.) e sem chuva (tratamento herbicida controle), mais o tratamento adicional sem chuva e sem aplicação de herbicida (testemunha). Ao final de cada avaliação para cada espécie vegetal foi determinado o acúmulo de biomassa das plantas. Diante do exposto verificou-se que os intervalos de chuva interferem negativamente na ação dos herbicidas para o controle da plantas e que os herbicidas quizalofope-p-metilico e haloxifope foram os que mais se destacaram no controle das plantas.<br>The study aimed to evaluate the influence of different time intervals of rainfall after the application of herbicide clethodim, haloxyfope and quizalofope-p-methyl, in post-emergence control of four weed species: B. decumbens, B. plantaginea, Cenchrus echinatus and Zea mays on soybeans. The experimental design was completely randomized and treatments arranged in a factorial scheme 3 x 6 (three herbicides and six time intervals of rain), totaling eighteen treatments and four replications for each weed species. Four experiments were conducted at a greenhouse with two plants per pot in the municipality of Pereiras, SP. Herbicide applications were made at different times during the day, in order to obtain different time intervals to simulate rain on the plants. Control evaluations at days 3, 7, 14, 21 and 28, were performed after application (DAA) of herbicides. After herbicide application the weeds were submitted to a slide of rain of 20 mm in five time intervals (15, 30, 60, 120 and 240 min) and no rain (herbicide treatment control), plus an additional treatment with no rain and without herbicide (control). At the end of each assessment for each species was determined the accumulation of plant biomass. With the results above it was found that the ranges of rain negatively interferes with the action of herbicides to control plants and herbicide quizalofope-p-methyl and haloxyfope were the most outstanding in plants control.
Book chapters on the topic "Quizalofop"
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Shiroishi, Akihiro, Isao Hashiba, Ryo Kokubo, Kazuo Miyake, and Yuji Kawamura. "Semi-Batch Cooling Crystallization of Quizalofop-Ethyl with Polymorphism." In ACS Symposium Series. American Chemical Society, 1990. http://dx.doi.org/10.1021/bk-1990-0438.ch019.
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Miyake, K., O. Araki, and M. Matsumura. "Crystallization Behaviors of α- and β-Quizalofop-ethyl Polymorphs in Homogeneous Nucleation." In Separation and Purification by Crystallization. American Chemical Society, 1997. http://dx.doi.org/10.1021/bk-1997-0667.ch010.
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de Andrade, Alexander, Augusto Tulmann Neto, Fernando Adami Tcacenco, et al. "Gamma-rays in the development of rice lines tolerant to aryloxyphenoxypropionate herbicides." In Mutation breeding, genetic diversity and crop adaptation to climate change. CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0029.
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Abstract The aryloxyphenoxypropionate (APP) herbicides are graminicides with excellent control of many grass weed species, including weedy rice (Oryza sativa L.). These herbicides block fatty acid biosynthesis by inhibition of the enzyme acetyl-CoA carboxylase (ACCase) and cause death of the plant. Through induced mutation of rice seeds with gamma-rays, rice lines resistant to APP have been developed. Plant dose-response assays confirmed resistance to the APP herbicides quizalofop-p-ethyl and haloxyfop-p-methyl. The carboxyl-transferase (CT) domain fragments of ACCase from the resistant line and the susceptible control were sequenced and compared. A point mutation was detected in the amino acid position 2027. Results indicated that resistance to APP herbicides is a consequence of an altered ACCase enzyme that confers resistance. APP-resistant rice provides an option to improve the efficiency of weed management in rice crops.
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Unger, Thomas A. "Quizalofop-Ethyl." In Pesticide Synthesis Handbook. Elsevier, 1996. http://dx.doi.org/10.1016/b978-081551401-5.50594-3.
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