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Showing 1 to 20 of 21 for “"common ragweed"”.

  1. Mechanism of Resistance in Common Ragweed to PPO-inhibiting Herbicides

    Rousonelos, Stephanie L.University of Illinois at Urbana-Champaign2010

    … in a dual-targeting gene known as PPX2L. Common ragweed, from Delaware, was the third documented weed species that evolved PPO-inhibiting herbicide resistance. This thesis provides information on the resistance mechanism of this common ragweed biotype to PPO-inhibiting herbicides. …

    uiuc Repository record

  2. Resistance to Als-Inhibiting Herbicides in Common Ragweed, Foxtail and Horseweed

    Zheng, DanmanUniversity of Illinois at Urbana-Champaign2015

    … the evolution of cloransulam resistance in common ragweed, which appeared in the same year as cloransulam was commercialized. The results revealed that resistance to cloransulam in common ragweed evolved in response to selection by ALS inhibitors other than cloransulam. Also, …

    uiuc Repository record

  3. 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

  4. 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

  5. Herbicide evaluation for broadleaf weed control in direct-seeded broccoli

    Herbst, Kathleen A.Virginia Polytechnic Institute and State University1988

    … 0.56 kg ai/ha provided excellent control of common ragweed with little or no visible crop injury. Common ragweed control with oxyfluorfen varied with soil moisture and organic matter. Applications of 0.28 and 0.56 kg/ha oxyfluorfen significantly reduced yield when compared to the cultivated …

    vt Repository record

  6. Evaluation of integrated weed management techniques and their nuances in Virginia crop production

    Beam, Shawn ChristopherVirginia Tech2019

    … weed species, four broadleaf (redroot pigweed, common ragweed, common lambsquarters, and common cocklebur) and two grass species (large crabgrass and giant foxtail). Results indicate that among summer annuals, broadleaf species retain larger proportions of their seed compared to grass species at …

    vt Repository record

  7. Weed management in conventional, no-till, and transgenic corn with mesotrione combinations and other herbicides

    Armel, Gregory RussellVirginia Tech2002

    … applied PRE did not adequately control common lambsquarters (Chenopodium album L.), smooth pigweed (Amaranthus hybridus L.), common ragweed (Ambrosia artemisiifolia L.), or morningglory species (Ipomoea spp.) in conventional tillage corn, but control of these weeds was generally improved …

    vt Repository record

  8. Investigations on the Interations of Acetolactate Synthase (ALS)-Inhibiting Herbicides with Growth Regulator and non ALS-Inhibiting Herbicides in Corn (Zea mays) and Selected Weeds

    Isaacs, Mark AllenVirginia Tech2000

    Herbicide combinations are common in corn production in the United States to control broadleaf and grass weed species. Studies were conducted in 1995 and 1996 to: (1) investigate the interactions of 2,4-D and dicamba with halosulfuron-methyl on common lambsquarters and common ragweed control in …

    vt Repository record

  9. Characterization of Acetolactate Synthase-Inhibiting Herbicide-Resistant Smooth Pigweed and Corn Weed Management Programs Utilizing Mesotrione in Combinations with Other Herbicides

    Whaley, Cory MillerVirginia Tech2005

    … <i>S</i>-metolachlor and atrazine controlled common lambsquarters (<i>Chenopodium album</i> L.), smooth pigweed, common ragweed (<i>Ambrosia artemisiifolia</i> L.), and morningglory (<i>Ipomoea</i> spp.) species when a timely rainfall followed application. POST applications of mesotrione …

    vt Repository record

  10. Weed Control in Cucumber Cucumis sativus, Pumpkin Cucurbita maxima, and Summer Squash Cucurbita pepo with Halosulfuron

    Trader, Brian WayneVirginia Tech2002

    … applied preemergence controlled only common ragweed (Ambrosia artemisiifolia L.) and smooth pigweed (Amaranthus hybridus L.). Postemergence halosulfuron controlled common ragweed, smooth pigweed, morningglory species (Ipomoea spp.), yellow nutsedge, and rice flatsedge (Cyperus iria …

    vt Repository record

  11. Incorporating the Experimental Herbicide CGA 362622 into Cotton Weed Management Programs in Virginia

    Richardson, Robert JerylVirginia Tech2002

    … Timely applications of CGA 362622 controlled common ragweed (Ambrosia artemisiifolia L.), common lambsquarters (Chenopodium album L.), annual morningglory species (Ipomoea spp.), and common cocklebur (Xanthium strumarium L.). However, CGA 362622 applications generally did not control spurred …

    vt Repository record

  12. Herbicide Carryover to Cover Crops and Evaluation of Cover Crops for Annual Weed Control in Corn and Soybeans

    Rector, Lucas ScottVirginia Tech2019

    … studying the effects of cereal rye biomass on common ragweed and Palmer amaranth control and light penetration and two field experiments to determine the effects of cereal rye and wheat cover crop biomass terminated with a roller crimper or left standing on summer weed control and light …

    vt Repository record

  13. Weed Management Programs in Potato, Transplanted Tomato and Transplanted Pepper with Rimsulfuron and Other Herbicides

    Ackley, John A.Virginia Tech1997

    … were investigated during 1992, 1993, and 1994. Common ragweed control by PRE combinations of metolachlor with linuron or metribuzin was higher when treatments included PRE or POST rimsulfuron. Common lambsquarters control was 93 to 96% by treatments that included POST rimsulfuron. Applications …

    vt Repository record

  14. Exploring the potential of chaff lining in Virginia wheat and soybean production

    Spoth, Matthew PatrickVirginia Tech2023

    … and Palmer amaranth (Amaranthus palmeri S.) and common ragweed (Ambrosia artemisiifolia L.) subject to SCL. Each weed species was evaluated in separate experiments, and the SCL experiment included an additional factor of with and without a cereal rye cover crop treatment. Chaff lines mimicked …

    vt Repository record

  15. Supervised and self-supervised deep learning approaches for weed identification and soybean yield prediction

    Srivastava, DhirajVirginia Tech2023

    … Italian ryegrass in wheat, Palmer amaranth, and common ragweed in soybean, which are troublesome weeds in the United States. One of the most innovative components of this research is the debut of a self-supervised learning approach specifically tailored for soybean yield prediction using only …

    vt Repository record

  16. Evaluation of Seed Impact Mills for Harvest Weed Seed Control in Soybean and Wheat in the Eastern United States

    Russell, Eli CarnleyVirginia Tech2024

    … monitored population density changes for common ragweed (Ambrosia artemisiifolia) in soybean and Italian ryegrass (Lolium perenne ssp. multiflorum) in wheat following a harvest with a seed impact mill. Results from objective three indicated that in the growing season following a harvest …

    vt Repository record

  17. Optimizing Weed Management via Microwave Irradiation

    Rana, AmanVirginia Tech2015

    … fragrant flatsedge, false green kyllinga, common ragweed, field bindweed, henbit, white clover, and pitted morningglory. There was a lag or warm up period between energizing the magnetron and actual microwave radiation production. To eliminate the gap between electric power supplied to …

    vt Repository record

  18. Crop and herbicide rotation effects on weed population dynamics and the characterization of imidazolinone-resistant smooth pigweed (Amaranthus hybridus)

    Manley, Brian S.Virginia Tech1996

    … programs affected control and densities of common lambsquarters, common ragweed, smooth pigweed, redroot pigweed, jimsonweed, goosegrass, stinkgrass, large crabgrass, smooth crabgrass, fall panicum, and yellow nutsedge. Generally, the continuous use of the same herbicide or herbicides with …

    vt Repository record

  19. Evaluation of florpyrauxifen-benzyl for use in pastures and hayfields

    Greene, WykleVirginia Tech2021

    … broadleaf plantain, plumeless thistle, and common ragweed. However, florpyrauxifen-benzyl + 2,4-D was less effective than other herbicides for controlling certain weeds, such as horsenettle. White clover was injured from florpyrauxifen-benzyl + 2,4-D, but was able to fully recover in 90 to …

    vt Repository record

  20. Field, greenhouse, and laboratory studies on the efficacy and action of the herbicides SC-0051 and SC-0774

    Mayonado, David JamesVirginia Polytechnic Institute and State University1988

    … preemergence or postemergence, controlled common lambs-quarters (Chenopodium album L.), common ragweed (Ambrosia artemisiifolia L.) horseweed (Conyza canadensis (L.) Cronq.), common chickweed (Stellaria media (L.) Vill. and was safe to corn. SC-0051 did not control smooth pigweed …

    vt Repository record

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