Palmer Amaranth (Amaranthus palmeri): A Review

  title={Palmer Amaranth (Amaranthus palmeri): A Review},
  author={Sarah M. Ward and Theodore M. Webster and Lawrence E. Steckel},
  booktitle={Weed Technology},
Abstract In little over 20 yr, Palmer amaranth has risen from relative obscurity to its current status as one of the most widespread, troublesome, and economically damaging agronomic weeds in the southeastern U.S. Numerous factors have enabled Palmer amaranth to become such a dominant and difficult-to-control weed, including its rapid growth rate, high fecundity, genetic diversity, ability to tolerate adverse conditions, and its facility for evolving herbicide resistance. It is both a serious… 
Del Amaranthus palmeri S. Wats. y otros demonios. Revisión bibliográfica
In countries or regions where this species is starting to invade, it is recommended that not only regulatory authorities, but also the agricultural sector as a whole, implement aggressive actions to prevent the establishment and dispersion, preferably aiming to eradicate this weed from those places where it is first detected.
Palmer Amaranth (Amaranthus palmeri) Damage Niche in Illinois Soybean Is Seed Limited
The results highlight the urgent need for weed managers to learn Palmer amaranth identification, prevent seed introduction, and maintain a policy of zero seed return.
A Nonnative Palmer Amaranth (Amaranthus palmeri) Population in the Republic of South Africa is Resistant to Herbicides with Different Sites of Action
Abstract Palmer amaranth (Amaranthus palmeri S. Watson) is not native to Africa. Based on the presence and persistence of A. palmeri populations, its invasive status in southern Africa is classified
Palmer Amaranth (Amaranthus palmeri) Adaptation to US Midwest Agroecosystems
Palmer amaranth (Amaranthus palmeri S. Watson) is one of the most troublesome agronomic weed species in the United States. Palmer amaranth is prevalent in the Southern Great Plains and the
Effect of PPO-Inhibiting Herbicides on the Growth and Sex Ratio of a Dioecious Weed Species Amaranthus palmeri (Palmer Amaranth)
It is suggested that PPO-inhibiting herbicide treatments may influence the growth and sex ratio of A. palmeri populations, which is an underlying factor in the rate of herbicide evolution in this species.
Timeline of Palmer amaranth (Amaranthus palmeri) invasion and eradication in Minnesota
This timeline provides a story of success and challenges in combating and eradicating Palmer amaranth and determined that manure spread on crop fields from contaminated screenings fed to livestock resulted in new infestations in 2018, 2019, and 2020.
Susceptibility of Palmer Amaranth (Amaranthus palmeri) to Herbicides in Accessions Collected from the North Carolina Coastal Plain
Data suggest A. palmeri resistant to chemistries other than glyphosate and thifensulfuron-methyl are present in NC, which highlights the need for weed management approaches to mitigate the evolution and spread of herbicide-resistant populations.
Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) Morphology, Growth, and Seed Production in Georgia
Early season weed control programs will have a large effect on Palmer amaranth potential growth and seed production, as well as crop yield, which suggests that soil seedbank reduction strategies effectively are needed.
First Report of Amaranthus palmeri S. Wats. in Cotton, Maize and Sorghum in Greece and Problems with Its Management
Resistance cases to important herbicides in spring crops, such as maize and cotton, indicate that management could become even more challenging if farmers do not adopt integrated strategies and tools to manage this weed.


Glyphosate‐Resistant Palmer Amaranth in the United States
Palmer amaranth (Amaranthus palmed S. Watson; subgenus Acnida, sub section Saueranthus) is one of the most common and problematic weeds in agronomic crop production throughout the southern United
Interference of Palmer Amaranth (Amaranthus palmeri) in Sweetpotato
Abstract Field studies were conducted in 2007 and 2008 at Clinton and Faison, NC, to evaluate the influence of Palmer amaranth density on ‘Beauregard’ and ‘Covington’ sweetpotato yield and quality
Palmer Amaranth (Amaranthus palmeri) in Tennessee Has Low Level Glyphosate Resistance
Results suggest that an altered target site is not responsible for glyphosate resistance in these Palmer amaranth biotypes, although the level of resistance was higher based on plant mortality response (about 10×).
Establishing the Geographical Distribution and Level of Acetolactate Synthase Resistance of Palmer Amaranth (Amaranthus palmeri) Accessions in Georgia
It is demonstrated that ALS-resistant Palmer amaranth occurs throughout the peanut-growing region of Georgia and growers in Georgia will need to alter their weed-control programs in peanut to include herbicides with multiple modes of action that do not rely on ALS herbicides for effective PalmerAmaranth control.
Glyphosate-resistant Palmer amaranth (Amaranthus palmeri ) confirmed in Georgia
A glyphosate-resistant Palmer amaranth biotype was confirmed in central Georgia and I50 values for visual control and shoot fresh weight were 8 and 6.2 times greater, respectively, with the resistant biotype compared with a known glyphosate-susceptible biotype.
Allelopathic effects of Palmer amaranth (Amaranthus palmeri) and other plant residues in soil.
Several crop and weed species were field grown to maturity and their residues incorporated with soil to determine the effects of the plant residues on the growth of subsequent plantings in a
Comparative growth of six Amaranthus species in Missouri
Because the timing for many postemergence herbicides depends on weed height, rapid growth shortly after emergence reduces the time frame for optimum control of species such as Palmer amaranth.
Competitive Impact of Palmer Amaranth (Amaranthus palmeri) on Cotton (Gossypium hirsutum) Development and Yield1
Abstract: A full-season field study was conducted near College Station, TX to determine the competitive interference of Palmer amaranth on cotton development, yield, and fiber properties and to
The biology of invasive alien plants in Canada. 3. Amaranthus tuberculatus (Moq.) Sauer var. rudis (Sauer) Costea & Tardif.
This annual dioecious weed was found in 2002 and 2003 infesting soybean fields in southwestern Ontario, and it was collected in 1992 from waste places in British Columbia, where it has become increasingly difficult to control during the past 10 yr.
Palmer Amaranth (Amaranthus palmeri) Impacts on Yield, Harvesting, and Ginning in Dryland Cotton (Gossypium hirsutum)1
Only the highest Palmer amaranth density reduced lint and seed yields, but all weed densities increased harvesting time 2- to 3.5-fold, and Weed infestations did not result in any differences in moisture content of seed cotton, ginning time, fiber quality, or the percentage of cleaned lint.