Erigeron bonariensis, Erigeron canadensis, and Erigeron sumatrensis

2021 ◽  
pp. 131-149
Author(s):  
Singarayer Florentine ◽  
Talia Humphries ◽  
Bhagirath Singh Chauhan
Keyword(s):  
Erigeron Canadensis

Inhibition of melanogenesis by Erigeron canadensis via down-regulating melanogenic enzymes in B16F10 melanoma cells

2008 ◽  
Vol 25 (6) ◽  
pp. 1463-1466 ◽  
Author(s):  
Eun-Suk Hong ◽  
Duc Thi Minh Nguyen ◽  
Dung Hoang Nguyen ◽  
Eun-Ki Kim
Keyword(s):  
Melanoma Cells ◽  
B16f10 Melanoma ◽  
Erigeron Canadensis ◽  
B16f10 Melanoma Cells

Efficacy of Halauxifen-Methyl on Glyphosate-Resistant Horseweed (Erigeron canadensis)

Weed Science ◽  
2018 ◽  
Vol 66 (6) ◽  
pp. 758-763 ◽  
Author(s):  
Cara L. McCauley ◽  
William G. Johnson ◽  
Bryan G. Young
Keyword(s):  
Zea Mays ◽  
Glycine Max ◽  
Field Experiments ◽  
Foliar Application ◽  
Management Systems ◽  
Herbicide Resistant ◽  
Synthetic Auxin ◽  
Comparable Level ◽  
Erigeron Canadensis ◽  
Application Rates

AbstractHalauxifen-methyl is a new synthetic auxin herbicide for control of broadleaf weeds, including preplant applications for corn (Zea maysL.) or soybean [Glycine max(L.) Merr.]. The objective of this study was to investigate the efficacy of halauxifen-methyl in comparison to the current auxin standards, 2,4-D and dicamba, on glyphosate-resistant (GR) horseweed (Erigeron canadensisL.) at different plant heights. In field experiments, a foliar application of halauxifen-methyl at the recommended use rate of 5 g ae ha−1resulted in 81% control. Dicamba applied at 280 g ae ha−1provided a comparable level of efficacy of 80%, while 2,4-D at 560 g ae ha−1resulted in 49% control. The addition of glyphosate improved GRE. canadensiscontrol with 2,4-D more than with halauxifen-methyl or dicamba, possibly due to the higher level of control observed with halauxifen-methyl or dicamba alone. Even though applied at 50 to 100 times lower application rates, the efficacy of halauxifen-methyl onE. canadensiswas similar to dicamba and greater than 2,4-D. Thus, halauxifen-methyl should be an effective tool for management of GRE. canadensisbefore planting both conventional and herbicide-resistant soybean varieties, and it precludes the extended preplant application interval required for dicamba in some soybean management systems.

Cover crop effects on horseweed (Erigeron canadensis) density and size inequality at the time of herbicide exposure

Weed Science ◽  
2019 ◽  
Vol 67 (3) ◽  
pp. 327-338 ◽  
Author(s):  
John M. Wallace ◽  
William S. Curran ◽  
David A. Mortensen
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Integrated Weed Management ◽  
Crop Response ◽  
Herbicide Resistant ◽  
No Till ◽  
Erigeron Canadensis ◽  
Size Inequality ◽  
Herbicide Exposure ◽  
Response Traits

AbstractProactive integrated weed management (IWM) is critically needed in no-till production to reduce the intensity of selection pressure for herbicide-resistant weeds. Reducing the density of emerged weed populations and the number of larger individuals within the population at the time of herbicide application are two practical management objectives when integrating cover crops as a complementary tactic in herbicide-based production systems. We examined the following demographic questions related to the effects of alternative cover-cropping tactics following small grain harvest on preplant, burndown management of horseweed (Erigeron canadensis L.) in no-till commodity-grain production: (1) Do cover crops differentially affect E. canadensis density and size inequality at the time of herbicide exposure? (2) Which cover crop response traits are drivers of E. canadensis suppression at time of herbicide exposure? Interannual variation in growing conditions (study year) and intra-annual variation in soil fertility (low vs. high nitrogen) were the primary drivers of cover crop response traits and significantly affected E. canadensis density at the time of herbicide exposure. In comparison to the fallow control, cover crop treatments reduced E. canadensis density 52% to 86% at the time of a preplant, burndown application. Cereal rye (Secale cereale L.) alone or in combination with forage radish (Raphanus sativus L.) provided the most consistent E. canadensis suppression. Fall and spring cover crop biomass production was negatively correlated with E. canadensis density at the preplant burndown application timing. Our results also show that winter-hardy cover crops reduce the size inequality of E. canadensis populations at the time of herbicide exposure by reducing the number of large individuals within the population. Finally, we advocate for advancement in our understanding of complementarity between cover crop– and herbicide-based management tactics in no-till systems to facilitate development of proactive, herbicide-resistant management strategies.

Global Gene Analysis of Erigeron canadensis-Treated TNF-α-, IL-4- and IL-1β-Stimulated A549 Human Epithelial Cells

2009 ◽  
Vol 54 (3) ◽  
pp. 227-235 ◽  
Author(s):  
Sung-Hwa Sohn ◽  
Eunjung Ko ◽  
Bang-Gul Oh ◽  
Jinju Kim ◽  
Eunsung Choi ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Gene Analysis ◽  
Tnf Alpha ◽  
Human Epithelial Cells ◽  
Erigeron Canadensis

scholarly journals Improving the Level and Consistency of Glyphosate-Resistant Canada Fleabane (Erigeron canadensis L.) Control With Bromoxynil-Based Tankmixes Applied Preplant to Soybean

2021 ◽  
Vol 14 (1) ◽  
pp. 11
Author(s):  
Meghan Dilliott ◽  
Nader Soltani ◽  
Darren E. Robinson ◽  
David C. Hooker ◽  
Peter H. Sikkema
Keyword(s):  
Field Trials ◽  
Erigeron Canadensis

Glyphosate-resistant (GR) Canada fleabane (Erigeron canadensis L.) is a problematic weed in soybean. Bromoxynil-based tankmixes provide control of GR Canada fleabane in monocot crops; however, there is limited research on preplant (PP) applications in soybean. The objective of this study was to determine the best third tankmix partner with glyphosate plus bromoxynil applied PP to improve the level and consistency of GR Canada fleabane control in soybean. Four field trials were conducted over a two-year (2020, 2021) period. Glyphosate plus bromoxynil controlled GR Canada fleabane 52, 58, and 69% at 2, 4, and 8 weeks after application (WAA) respectively. The addition of saflufenacil to glyphosate plus bromoxynil improved GR Canada fleabane control 39% at 2 WAA and the addition of dicamba to glyphosate plus bromoxynil improved GR Canada fleabane control 39 and 29% at 4 and 8 WAA, respectively. The addition of bromoxynil to glyphosate plus 2,4-D ester or dicamba improved GR Canada fleabane control by 36 and 35%, respectively, at 2 WAA. The addition of bromoxynil to glyphosate plus tiafenacil or pyraflufen-ethyl/2,4-D improved GR Canada fleabane control by 19% at 8 WAA. The addition of bromoxynil to glyphosate plus metribuzin improved GR Canada fleabane control 31, 32, and 36% at 2, 4, and 8 WAA, respectively. Antagonism was observed between bromoxynil plus glyphosate plus tiafenacil or halauxifen-methyl 8 WAA, while the interaction between bromoxynil plus glyphosate plus pyraflufen-ethyl/2,4-D was considered synergistic. The addition of metribuzin, tiafenacil, pyraflufen-ethyl/2,4-D, 2,4-D ester, halauxifen-methyl, saflufenacil or dicamba to glyphosate plus bromoxynil improved the consistency of GR Canada fleabane at 2, 4, and 8 WAA. This study concludes that the addition of saflufenacil or dicamba to glyphosate plus bromoxynil can improve the level and consistency of GR Canada fleabane control applied PP to soybean.

scholarly journals Garbniki w Erigeron canadensis L. [The tannines in Erigeron canadensis L.]

2015 ◽  
Vol 37 (4) ◽  
pp. 657-664
Author(s):  
O. Kostecka-Mądalska ◽  
E. Borowczak-Niemczewska
Keyword(s):  
Erigeron Canadensis
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