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Showing 1 to 20 of 33 for “"waterhemp"”.
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Multiple Herbicide Resistance in Waterhemp
In 2001, a population of waterhemp was identified in Adams County, Illinois that survived following treatment of several acetolactate synthase (ALS) inhibitors, and a POST application of lactofen, a protoporphyrinogen oxidase (PPO)-inhibiting herbicide. Greenhouse studies were conducted with this …
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Biology, Ecology and Management of Common Waterhemp
… on examining the biology and ecology of common waterhemp. This research evaluates the effect shade may have on common waterhemp growth and seed production, what effect row spacing may have on common waterhemp, crop and tillage effects on common waterhemp, and construction of a non-linear model …
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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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Recent advances using genetic analyses in waterhemp
Amaranthus tuberculatus (Moq.) Sauer is a driver weed species within maize and soybean production systems in the Midwestern United States. The development of herbicide resistance is a contributing factor leading to management challenges in the species. Recently, non-target-site herbicide resistance …
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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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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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Resolution of sex chromosomes in waterhemp and Palmer amaranth
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
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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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Mechanisms and control of waterhemp populations resistant to group 15 herbicides
… small-seed broadleaf weeds for over sixty years. Waterhemp is a small-seeded, summer annual weed species native to the Midwestern United States. The species can be challenging to control due to important biological characteristics, such as reproductive output, genetic variability, seed dormancy, …
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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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Management and Interference Potential of Common Waterhemp (Amaranthus Rudis) in Soybean (Glycine Max)
… 1996, 1997, and 1998 to determine the common waterhemp interference period soybean could tolerate without reducing seed yield. Removal of common waterhemp interference 2 weeks after soybean unifoliolate expansion resulted in soybean seed yield equivalent to a season-long weed free control, but …
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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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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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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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Soil- and foliar-applied tank-mix combinations to improve management of palmer amaranth and waterhemp
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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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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