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Showing 1 to 20 of 21 for “"Waterhemp (Amaranthus tuberculatus)"”.
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Characterization of HPPD-inhibitor resistance in waterhemp (Amaranthus tuberculatus)
Waterhemp, a summer annual species native to much of the Midwest, has proven to be one of the toughest weeds for Illinois producers to control. Several characteristics of waterhemp make this species ideally suited to thrive in Illinois agricultural fields, including but not limited to high seed …
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Fitness costs of herbicide resistance traits in common waterhemp (Amaranthus tuberculatus)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-05-01
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Characterization of a novel five-way-resistant population of waterhemp (Amaranthus tuberculatus)
Waterhemp [Amaranthus tuberculatus (Moq.) Sauer] is a dioecious summer annual species native to much of the Midwest. This species exhibits many intriguing characteristics including, but not limited to, obligate outcrossing that results in a high level of genetic diversity, prolific seed production, …
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Stewarding chemical control in tall waterhemp (Amaranthus tuberculatus) while foregoing statistical significance
Tall waterhemp (Amaranthus tuberculatus) has become a considerable problem in U.S. agriculture, especially in corn and soy cropping systems. A particularly concerning characteristic of waterhemp is its ability to rapidly evolve resistance to herbicides. While chemical control is only one component …
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Examination of target-site-based mechanisms of glyphosate resistance in waterhemp (Amaranthus tuberculatus)
… to evolve resistance. In 2005, the first GR waterhemp (Amaranthus tuberculatus) population was identified. Waterhemp is perhaps the most economically threatening weed in the north central United States, with many populations evolving resistance to herbicides spanning multiple sites of action. …
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Phenotypic and biochemical characterization of atrazine and HPPD-resistant waterhemp (amaranthus tuberculatus) populations
Waterhemp (Amaranthus tuberculatus) is a dioecious, summer annual, broadleaf species that is native to the Midwest. Two decades ago it was not considered a major agricultural pest, but with the adoption of glyphosate-only postemergence (POST) herbicide programs without soil residual activity …
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Characterization of PPO-inhibitor resistance in waterhemp (Amaranthus tuberculatus) and Palmer amaranth (Amaranthus palmeri)
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 …
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Understanding the genetic basis of dioecy in waterhemp (Amaranthus tuberculatus) and palmer amaranth (Amaranthus palmeri)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-05-01
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Understanding gender determination in dioecious Amaranthus weeds palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus)
… the sex determination 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 …
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Preemergence activity of chloroacetamide herbicides on a multiple herbicide-resistant population of waterhemp (amaranthus tuberculatus)
… applied PRE, and relatively high crop safety. Waterhemp [Amaranthus tuberculatus (Moq.) Sauer] is a small-seeded, summer annual weed species native to the Midwest. Waterhemp is dioecious with an ability to evolve resistance to herbicides from various sites-of-action. This, paired with high …
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Dissecting phenotypic inheritance of very-long-chain fatty acid inhibitor resistance in waterhemp (Amaranthus tuberculatus) using a novel greenhouse assay: 'PRIM'
Weedy plant species, especially within the genus Amaranthus, capable of surviving the selective phytotoxic effects of an EPA-approved chemical at its most vulnerable growth stage, represent a clear and present danger to the United States and perhaps the world. Such a threat, if left unchecked, may …
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Uptake, translocation, and metabolism 2,4-D in enlist crops and control of drought-stressed waterhemp (Amaranthus tuberculatus) with 2,4-D and glyphosate
… to determine the effect of drought stress on waterhemp (Amaranthus tuberculatus) control POST with 2,4-D and/or glyphosate, and to define potential differences between the two herbicides in relation to drought stress and POST activity. Greenhouse assays and a whole-plant assay utilizing …
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Biochemical and molecular basis for metabolism-based atrazine resistance in Amaranthus tuberculatus
… two atrazine-resistant populations of tall waterhemp (Amaranthus tuberculatus) from central Illinois (designated ACR and MCR) did not possess a point mutation in psbA (encoding the D1 protein, the target site for atrazine), but rapid production of atrazine-glutathione conjugates indicated …
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Non-target-site resistance to ALS inhibitors in waterhemp
… of herbicides referred to as ALS inhibitors. Waterhemp (Amaranthus tuberculatus) is considered one of the most problematic weeds in the Midwest cropping region. The evolution of herbicide resistance and multiple resistance mechanisms within the species is one of the major properties making it …
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From the simple to the complex: an examination of different herbicide resistances
… by a single gene. Outcrossing species, such as waterhemp (Amaranthus tuberculatus), in addition to having herbicide resistance conferred by a target-site mutation controlled by a single gene, often evolve non-target-site-based resistance mechanisms controlled by multiple genes. The overall …
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Cover crop management strategies for driver weeds in Kansas
… 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 …
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Weed seed destructor: A harvest weed seed control method to manage waterhemp in soybean
Waterhemp (Amaranthus tuberculatus [Moq.] J.D. Sauer) is the most common and troublesome weed in soybean (Glycine max [L.] Merr.) based cropping systems of the Midwestern United States (U.S.). Evolution of multiple herbicide resistance in waterhemp is an increasing concern for soybean producers in …
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Distinct biochemical and molecular mechanisms confer resistance to mesotrione and atrazine in a multiple herbicide-resistant waterhemp population
Waterhemp (Amaranthus tuberculatus) is a troublesome annual weed species in maize (Zea mays) and soybean (Glycine max) production, partly due to multiple mechanisms for herbicide resistance. Previous research reported the first case of resistance to mesotrione and other 4-hydroxyphenylpyruvate …
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Multi-tactic ecological strategies to manage Bassia scoparia and Amaranthus tuberculatus in the cropping systems of Great Plains and Midwestern U.S.
Kochia (Bassia scoparia [L.] A.J. Scott) and waterhemp (Amaranthus tuberculatus [Moq.] J.D. Sauer) are one of the most troublesome weeds in the cropping systems of Great Plains and Midwestern United States, respectively. A widespread occurrence of multiple herbicide-resistant (MHR) B. scoparia and …
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Population genetics of herbicide resistance in waterhemp
Waterhemp populations resistant to herbicides that inhibit protoporphyrinogen oxidase (PPO) have been identified throughout the Midwest and the mechanism of resistance in populations from Illinois was previously determined to result from a 3 base pair deletion in the protoporphyrinogen oxidase …
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