Academic literature on the topic 'Herbicide resistance – Québec (Province)'

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Journal articles on the topic "Herbicide resistance – Québec (Province)"

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Costea and F. J. Tardif, M. "The biology of Canadian weeds. 126. Amaranthus albus L., A. blitoides S. Watson and A. blitum L." Canadian Journal of Plant Science 83, no. 4 (2003): 1039–66. http://dx.doi.org/10.4141/p02-056.

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A review of biological information is provided for three species of the genus Amaranthus: A. albus L., A. blitoides S. Watson and A. blitum L. The last species has been revised taxonomically and a new subspecies for Canada is presented-A. blitum subsp. emarginatus (Moq. ex Uline & Bray) Carretero, Munoz Garmendia & Pedrol. Amaranthus albus and A. blitoides are native to the U.S.A. and introduced to Canada. Both species are annual ruderal and agrestal weeds. During the past 100 yr the two species have spread across most provinces of Canada, but the greatest frequency and abundance have
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Jetté, L. P., L. Ringuette, A. Dascal, J. R. Lapointe, and P. Turgeon. "Pneumococcal resistance to antimicrobial agents in the province of Québec, Canada." Journal of Clinical Microbiology 32, no. 10 (1994): 2572–75. http://dx.doi.org/10.1128/jcm.32.10.2572-2575.1994.

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Saint-Louis, Sophie, Antonio DiTommaso, and Alan K. Watson. "A Common Ragweed (Ambrosia artemisiifolia) Biotype in Southwestern Québec Resistant to Linuron." Weed Technology 19, no. 3 (2005): 737–43. http://dx.doi.org/10.1614/wt-04-276.1.

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The degree of resistance to linuron of a common ragweed biotype was investigated. Suspected linuron-resistant plants collected from a carrot field near Sherrington, Québec, were subjected to increasing rates of linuron under glasshouse conditions. Resistance to linuron of the common ragweed biotype was suspected because 33% of plants survived to reproduction after they were sprayed at a rate of 4.5 kg ai/ha, two times the dose rate recommended for linuron in carrots, and also because 3% of plants survived to reproduction after they were sprayed at a rate of 22.5 kg ai/ ha, 10 times the recomme
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Bourgeois, Luc, and Ian N. Morrison. "Mapping risk areas for resistance to ACCase inhibitor herbicides in Manitoba." Canadian Journal of Plant Science 77, no. 1 (1997): 173–79. http://dx.doi.org/10.4141/p96-083.

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Since 1976, seven acetyl coenzyme-A carboxylase (ACCase) inhibitors (referred to as Group 1 herbicides) have been registered in western Canada for wild oat (Avena fatua L.) and green foxtail (Setaria viridis L.) control. In 1990, Group 1 resistant wild oat populations were identified from fields in Manitoba which had been repeatedly sprayed with these products during the previous 10 yr. Since the occurrence of resistance is directly related to the frequency of herbicide use, the purpose of this study was to compile herbicide use histories on a province-wide basis using data included in the Man
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Laforest, Martin, and Brahim Soufiane. "Coevolution of Two Sulfonylurea-Resistant Common Chickweed (Stellaria media) Biotypes with Different Mutations in the Acetolactate Synthase Gene." Weed Science 66, no. 4 (2018): 439–45. http://dx.doi.org/10.1017/wsc.2018.26.

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AbstractCommon chickweed [Stellaria media(L.) Vill.] is an annual weed found in grain fields and pastures. This creeping weed produces a mat-like canopy that competes with crop seedlings for light and nutrients. This species is almost exclusively autogamous. Acetolactate synthase (ALS)-inhibiting herbicides are frequently used to control this broadleaf weed, and two mutations in theS. media ALSgene (Pro-197-Gln and Trp-574-Leu) have been reported to confer herbicide resistance. Seeds from several plants that survived an application of thifensulfuron-methyl/tribenuron-methyl (16 g ai ha−1) were
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Su, Shao Q., and William H. Ahrens. "Weed Management in Northeast China." Weed Technology 11, no. 4 (1997): 817–23. http://dx.doi.org/10.1017/s0890037x00043499.

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Agricultural production in China occurs via three distinct organizational units: the countryside farmer, state farms, and military farms. The countryside farmer in northeast China carries out most production operations with hand tools, some animal and tractor power, and little additional mechanization. Most weeds in row crops are controlled by hand, although a high percentage of the rice crop is treated with herbicides as is about 20% of the wheat. Countryside farmers independently manage small plots of land. State and military farms, the majority of which are located in China's northeastern-m
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Du, Long, Xiao Li, Xiaojing Jiang, et al. "Target-site basis for fomesafen resistance in redroot pigweed (Amaranthus retroflexus) from China." Weed Science 69, no. 3 (2021): 290–99. http://dx.doi.org/10.1017/wsc.2021.14.

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AbstractRedroot pigweed (Amaranthus retroflexus L.) is a dominant weed in soybean [Glycine max (L.) Merr.] fields in Heilongjiang Province, China. High selective pressure caused by the extensive application of the protoporphyrinogen oxidase (PPO)-inhibiting herbicide fomesafen has caused A. retroflexus to evolve resistance to this herbicide. Two susceptible and two resistant populations (S1, S2, R1, and R2) were selected in this study to illustrate the target-site resistance mechanism in resistant A. retroflexus. Whole-plant bioassays indicated that R1 and R2 had evolved high-level resistance
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Lardé, Hélène, David Francoz, Jean-Philippe Roy, et al. "Comparison of Quantification Methods to Estimate Farm-Level Usage of Antimicrobials in Medicated Feed in Dairy Farms from Québec, Canada." Microorganisms 9, no. 9 (2021): 1834. http://dx.doi.org/10.3390/microorganisms9091834.

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Monitoring antimicrobial usage (AMU) in dairy cattle is becoming common in a growing number of countries, with the ultimate goal to improve practices, reduce the development of antimicrobial resistance, and protect human health. However, antimicrobials delivered as feed additives can be missed by some of the quantification methods usually implemented. Our objective was to compare three methods of quantification of in-feed AMU in Québec dairy herds. We recruited 101 dairy producers for one year in the Québec province. Quantities of antimicrobials were calculated by farm from: (1) feed mills inv
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Golmohammadzadeh, Sajedeh, Javid Gherekhloo, Antonia M. Rojano-Delgado, et al. "The First Case of Short-Spiked Canarygrass (Phalaris brachystachys) with Cross-Resistance to ACCase-Inhibiting Herbicides in Iran." Agronomy 9, no. 7 (2019): 377. http://dx.doi.org/10.3390/agronomy9070377.

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The weed Phalaris brachystachys Link. severely affects winter cereal production. Acetyle-CoA Carboxylase (ACCase)-inhibiting herbicides are commonly used to control this weed in wheat fields. Thirty-six populations with suspected resistance to ACCase-inhibiting herbicides were collected from wheat fields in the Golestan Province in Iran. A rapid test performed in Petri dishes and whole-plant dose–response experiments were conducted to confirm and investigate the resistance level of P. brachystachys to ACCase-inhibiting herbicides. The seed bioassay results showed that 0.02 mg ai L−1 clodinafop
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Simard, Marie-Josée, Anne Légère, and Suzanne I. Warwick. "Transgenic Brassica napus fields and Brassica rapa weeds in Quebec: sympatry and weed-crop in situ hybridization." Canadian Journal of Botany 84, no. 12 (2006): 1842–51. http://dx.doi.org/10.1139/b06-135.

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Hybridization between the herbicide-resistant transgenic crop Brassica napus L. (canola) and its weedy relative Brassica rapa L. (bird rape) has been documented in Quebec. Our goal was to evaluate the actual hybridization potential based on range overlap and actual in situ hybridization rates. This was done by mapping B. napus canola fields, comparing them with the sampling locations of B. rapa herbarium specimens from Quebec, gathering information on the presence of B. rapa in certified canola seed production fields, and surveying for B. rapa populations located in, or close to B. napus field
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Dissertations / Theses on the topic "Herbicide resistance – Québec (Province)"

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St-Louis, Sophie. "Resistance of common ragweed (Ambrosia artemisiifolia L.) to the herbicide linuron and evaluation of several species of pathogenic fungi for its biological control." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33447.

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Common ragweed (Ambrosia artemisiifolia L., Asteraceae) is an annual herbacious weed that is a troublesome pest in carrot fields of Southwestern Quebec. Over the past decade, ragweed has shown resistance to linuron, the only herbicide that is registered for post-emergence control of this weed in carrots. In this research, the degree of resistance to linuron was investigated for a ragweed biotype collected from a carrot field in Sherrington, Quebec, where a decreased performance of linuron had been noted. This biotype showed a linuron resistance ratio (I50) of 9.09, when compared with ragweed p
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Laberge, Guillaume. "Establishment and persistence of kura clover no-till drilled into pastures with herbicide sod suppression and nitrogen fertilization." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81350.

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Kura clover was successfully established via sod-seeding in different environments. Its establishment and yields were initially inferior to that of red clover and white clover. But, its presence slowly increased in the sward and, by the first harvest of the second post seeding season, it was yielding significantly more than the legume species presently recommended for pastures. Clover establishment increased with increasing intensity of herbicide suppression. Best overall results were obtained with glyphosate at low rate (0.8 kg a.i. ha-1). Paraquat (0.9 kg a.i. ha -1) did not suppress
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Jebellie, Seyed J. "A lysimeter study to determine fate and transport of three agricultural herbicides under different water table management systems /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34649.

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Subirrigation systems are generally used in humid areas to provide suitable moisture conditions for plant growth. These systems can also be used to reduce pesticide loadings from agricultural lands, since they tend to keep the discharging waters within farm boundaries for extended periods of time. This allows for greater pesticide microbial and chemical degradation.<br>A three-year field lysimeter study was initiated to investigate the role of subirrigation systems in reducing the risk of water pollution from the three most commonly used herbicides in Quebec, namely atrazine (2-chloro-4[ethyla
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Arjoon, Diane S. "Effect of water table management on pesticide movement in two Québec soils." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69596.

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A three year field study was undertaken to assess the influence of water table management, namely subsurface irrigation and controlled drainage, on the movement of pesticides through the soil profile into ground water. The herbicides under investigation were prometryn on an organic soil, and metolachlor on a sandy soil. Both soil and groundwater were collected and analyzed. The results presented are those obtained in the first two years of the project.<br>In the organic soil, herbicide leaching was greatly reduced due to the management of the water table. The pesticide remained higher in the s
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Dewdney, Megan. "Susceptibility of apple cultivars to Venturia inaequalis." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31221.

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Apple scab is one of the greatest apple management problems throughout the world Much work has been done on cultivars resistant to Venturia inaequalis (Cke.) Wint., but few have been a commercial success. This frequently leaves fungicides as the only control method used. As Quebec growers select new cultivars for planting, more information is needed on their relative susceptibility for efficient scab control. In this light, 21 cultivars common to central and eastern Canada, were examined for their relative susceptibility using several components of partial resistance; disease severity, incubat
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Moro-Méndez, José. "Associations between genetic markers and mastitis resistance in Canadian Holsteins." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85943.

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The objective of this thesis was to test for associations between genetic polymorphisms of genes related to immune response (growth hormone (GH), growth hormone receptor (GHR), ornithine decarboxylase (ODC), insuline-like growth factor-1 (IGF-1), adrenocorticotropin hormone (ACTH), corticotrophin releasing hormone (CRH), and prolactin (PRL)) and mastitis resistance traits (incidence of clinical mastitis (ICM), occurrence of clinical mastitis (OCM), culling due to mastitis (CDM), and somatic cell scores (SCS)) in Canadian Holsteins.<br>Using lactation records of cows enrolled in milking
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Hidalgo, Luis F. "Neoliberal globalization and its critics : theory, practice and resistance in the Americas." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31114.

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This paper advances a theoretical construct entitled "neoliberal globalization" to explain the transformations in state form since the late 1970s which have been inspired by neoliberalism, an ideology privileging market mechanisms for capital accumulation and social organization. The essay will then examine the phenomenon of Canada's and Quebec's integration into the North American and the hemispheric economies since the mid-1980s. The following section will focus on the impact of neoliberal globalization on Quebec's idiosyncratic modalities of state organization and social integration. Lastly
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Barton, Ksenia O. "Patterns of survivorship and susceptibility to rust infection in a population of Arisaema triphyllum." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0005/MQ44123.pdf.

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Deng, Yinghai 1966. "Development and disease resistance of leafy reduced stature maize (Zea mays L.)." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38177.

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Previous studies on Leafy reduced-stature (LRS) maize found that it had extremely early maturity and a higher harvest index (HI), leading to high yields for its maturity rating. Whether this apparent high HI is relaxed to its earliness, or can also exist among the medium or late maturity LRS maize has not been previously investigated. It was also of interest to know if the traits that produced the LRS canopy structure have pleiotropic effects on root architecture. Finally, field observations indicated that LRS maize had a lower incidence of common smut. It is not known whether this apparent re
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Arcelin, Rachel. "A survey of carrot diseases on muck soils in the Montreal area and evaluation of partial resistance to Cercospora blight in carrot cultivars /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60521.

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During the summer 1988 and 1989, surveys were conducted on the muck soils, South of Montreal to estimate the prevalence and incidence of the carrot diseases. Cercospora blight was the most prevalent disease; 91% and 96% of the fields and 99% and 92% of the plants sampled were diseased in 1988 and 1989, respectively. In decreasing order of occurrence the diseases present were: Crown gall, Alternaria blight, Root Knot, Sclerotinia rot and Aster yellows.<br>Greenhouse and field studies were carried out to evaluate partial resistance to Cercospora blight in 111 carrot cultivars based on the mean i
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Books on the topic "Herbicide resistance – Québec (Province)"

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Obomsawin, Alanis. Kanehsatake: 270 years of resistance. National FiIm Board of Canada, 1993.

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