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Showing 1 to 20 of 24 for “"Amaranthus palmeri"”.

  1. Herbicide strategies for Palmer amaranth (Amaranthus palmeri) management in Illinois

    Ringler, Lanae ElizabethUniversity of Illinois at Urbana-Champaign2018

    Palmer amaranth has been spreading from the southern United States into the Midwest, and the extent of damage this weed can inflict to Illinois row crops is not yet known. Palmer amaranth is known for rapid biomass accumulation and multiple emergence events, making this weed difficult to control. …

    uiuc Repository record

  2. Alternative Herbicide Control Options for Glyphosate-Resistant Palmer Amaranth (Amaranthus Palmeri)

    Botha, George Macmillan2017

    <p>The occurrence of glyphosate-resistant (GR) Palmer amaranth has prompted a shift in weed management strategies worldwide. Studies were conducted with the aim to (1) establish and compare the degree of tolerance of GR Palmer amaranth populations; (2) assess the efficacy of glufosinate, …

    arkansas Repository record

  3. The biology and management of Palmer amaranth (Amaranthus palmeri S. Wats) in Indiana

    Spaunhorst, Douglas J.

    <p>Palmer amaranth is a pernicious summer annual weed that has evolved resistance to six herbicide sites of action in the U.S. and threatens agriculture production. In 2011, Palmer amaranth was identified in flood plains in two southern Indiana counties (Posey and Vanderburgh). Determining if …

    purdue-thes Repository record

  4. Investigating the heritability of resistance fueling copy number variation in glyphosate resistant Amaranthus palmeri

    Han, Lisa2023

    … resistance in agricultural weed populations. In Amaranthus palmeri, CNV of the EPSPS gene, the target of glyphosate herbicide, ranges from 1 to over 160 copies, and is the primary genetic determinant of glyphosate resistance. The amplified copies of EPSPS are found as extrachromosomal circular …

    queens Repository record

  5. Characterization of PPO-inhibitor resistance in waterhemp (Amaranthus tuberculatus) and Palmer amaranth (Amaranthus palmeri)

    Lillie, Kathryn JoyceUniversity of Illinois at Urbana-Champaign2019

    Waterhemp and Palmer amaranth are two of the most troublesome weed species in the Midwest. The overuse of acetolactate synthase (ALS), photosystem II, and 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) inhibitors to control these species led to the evolution of resistance to these herbicides …

    uiuc Repository record

  6. Control, Assessment and Glyphosate Resistance of Palmer Amaranth (Amaranthus palmeri S. Wats) in Virginia

    Ahmed, Amro Mohamed Aly TawficVirginia Tech2011

    Glyphosate resistant crops were rapidly adopted by farmers since their introduction in 1996 and currently, greater than 90% of cotton and soybean crops are glyphosate resistant. Glyphosate has been an effective mean for controlling Palmer amaranth, however overreliance on glyphosate based systems …

    vt Repository record

  7. Understanding the genetic basis of dioecy in waterhemp (Amaranthus tuberculatus) and palmer amaranth (Amaranthus palmeri)

    Montgomery, Jacob SamuelUniversity of Illinois at Urbana-Champaign2020

    Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-05-01

    uiuc Repository record

  8. Understanding gender determination in dioecious Amaranthus weeds palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus)

    Sadeque, AhmedUniversity of Illinois at Urbana-Champaign2020

    … of dioecious weeds. Common waterhemp (Amaranthus tuberculatus (Moq.) Sauer var. rudis (Sauer) Costea and Tardif) and Palmer amaranth (Amaranthus palmeri S. Watson) are troublesome weeds of row-crop production in the United States. Their dioecious reproductive systems ensure outcrossing, …

    uiuc Repository record

  9. Resistance Screening and Control Options for Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) in Cotton (Gossypium hirsutum)

    Doherty, Ryan Christopher2017

    <p>In the mid-2000's, glyphosate-resistant Palmer amaranth biotypes began to emerge in many southern states. In 2006, glyphosate-resistant Palmer amaranth was identified in a field in Mississippi County, Arkansas. A greenhouse experiment was conducted in 2008 to screen Palmer amaranth accessions, …

    arkansas Repository record

  10. Use of Fluridone for Control of Palmer Amaranth (Amaranthus palmeri) in Cotton (Gossypium hirsutum) and on Ditchbanks

    Hill, Zachary Thornton2017

    <p>Since 2006, glyphosate-resistant Palmer amaranth has been considered the most problematic weed in agronomic crops across the Midsouth. As a result of glyphosate resistance, producers began to again utilize a diverse herbicide program for management of this weed, which consists of several …

    arkansas Repository record

  11. Integration of Herbicide Programs with Cultural and Mechanical Practices for Managing Glyphosate-Resistant Palmer amaranth (Amaranthus palmeri) in Soybean (Glycine max)

    Bell, Holden2024

    <p>Herbicide-resistant Palmer amaranth is the most troublesome weed in Arkansas row crops, causing producers to rely heavily on multiple mechanisms of action to reduce selection pressure for further evolution of herbicide resistance and to successfully produce a profitable crop. It is critical for …

    arkansas Repository record

  12. Control and Fecundity of Palmer Amaranth (Amaranthus palmeri) and Common Ragweed (Ambrosia artemisiifolia) from Soybean Herbicides Applied at Various Growth and Development Stages

    Scruggs, Eric BrandonVirginia Tech2020

    Palmer amaranth (Amaranthus palmeri) and common ragweed (Ambrosia artemisiifolia) are two of the most troublesome weeds in soybean. Both weeds possess widespread resistance to glyphosate and acetolactate synthase (ALS) inhibiting herbicides resulting in the use of protoporphyrinogen oxidase- (PPO) …

    vt Repository record

  13. Avoiding Protoporphyrinogen Oxidase Inhibiting Herbicide Selection Pressure on Common Ragweed and Palmer amaranth in Soybean

    Blake, Hunter B.Virginia Tech2019

    Palmer amaranth (Amaranthus palmeri) and common ragweed (Ambrosia artemisiifolia) can cause detrimental soybean yield loss. Due to widespread resistance to glyphosate and ALS-inhibiting herbicides, growers rely on protoporphyrinogen oxidase inhibiting herbicides (PPO) such as flumioxazin applied …

    vt Repository record

  14. Decision Support Software for Palmer Amaranth Weed Control

    Lindsay, Karen Renee2017

    <p>Herbicide-resistant Palmer amaranth [Amaranthus palmeri (S.) Wats.] has been identified as one of the most troublesome weeds, specifically for corn (Zea mays L.), cotton (Gossypium hirsutum L.), and soybean [Glycine max (L.) Merr.] producers in the southern United States. The use of herbicide …

    arkansas Repository record

  15. A comparative study of the population dynamics of four Amaranthaceae species

    Schwartz, Lauren Michele2015

    … are found in the Amaranthaceae family, such as Amaranthus palmeri and A. tuberculatus. These summer annual weeds are troublesome due to their competitive ability, high seed production, and resistance to herbicides from several modes of action which complicates management in field crops and has …

    siu-theses Repository record

  16. Evaluation of Crop Tolerance and Weed Control in Corn and Grain Sorghum with Atrazine Replacements

    Richburg, Jacob Thomas2024

    … control studies displayed that Palmer amaranth (Amaranthus palmeri S. Wats), pitted morningglory (Ipomoea lacunosa L.), and broadleaf signalgrass [Echinochloa crus-galli (L.) P. Beauv.] can all be controlled without atrazine; however, weed density was low in these studies. This research …

    arkansas Repository record

  17. Cover crop management strategies for driver weeds in Kansas

    Woitaszewski, Lily AnneKansas State University2023

    … of cereal rye cover crop on Palmer amaranth (Amaranthus palmeri S. Watson) and waterhemp (Amaranthus tuberculatus (Moq.) J. D. Sauer) seedbanks were evaluated. Seeds were collected in Kansas, Indiana, Missouri, North Dakota, and Wisconsin. Treatments included burial in cereal rye cover crop …

    ksu Repository record

  18. EPSPS gene duplication in Palmer amaranth: relative fitness, inheritance, and duplication mechanism of the glyphosate resistance trait

    Giacomini, Darci A., author, Westra, Philip, advisor, Ward, Sarah, advisor, Leach, Jan, committee member, Preston, Christopher, committee member, Bedinger, Patricia, committee memberColorado State University. Libraries2015

    Glyphosate resistant (GR) Palmer amaranth (Amaranthus palmeri S. Wats.) is a weedy plant species that has invaded agricultural fields in at least 25 states, raising the cost of weed control to more than 4x the original cost. In most areas, the resistance is conferred through a gene amplification …

    colostate Repository record

  19. Mitigating Rice Injury Caused by Florpyrauxifen-Benzyl and Optimizing Florpyrauxifen-benzyl Rate and Timing for use in Furrow-Irrigated Rice

    Beesinger, James Winston2022

    … weed species such as Palmer amaranth (Amaranthus palmeri S. Wats). Florpyrauxifen-benzyl effectively controlled Palmer amaranth in a greenhouse study at lower-than-labeled rates and was found to be an effective alternative site-of-action for use in furrow-irrigated rice. Research …

    arkansas Repository record

  20. Exploring the mechanisms of Palmer amaranth resistance to protoporphyrinogen oxidase-inhibitor herbicides, dynamics of gender, and management strategies

    Borgato, Ednaldo AlexandreKansas State University2023

    Palmer amaranth (Amaranthus palmeri S. Watson) is a C4, summer annual, dioecious broadleaf plant and is the most economically damaging and troublesome weed in major crops grown in the USA. Currently, Palmer amaranth is reported to have evolved resistance to nine herbicide sites of action, raising …

    ksu Repository record

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