Results 161 to 170 of about 702 (195)
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MANAGEMENT OF WATERHEMP IN GLYPHOSATE-RESISTANT SUGARBEET
American Society of Sugarbeet Technologist, 2013Glyphosate-resistant waterhemp continues to increase in Minnesota and North Dakota, making waterhemp management difficult in glyphosate-resistant sugarbeet. Multiple small-plot sugarbeet research trials have been conducted from 2010 to 2012 investigating management of glyphosate-resistant waterhemp with preplant incorporated, preemergence, and/or ...
Jeff M. Stachler, Aaron L. Carlson
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Waterhemp Control in Transgenic and Conventional Corn Varieties
Crop Management, 2004Common waterhemp has become a major problem in the western corn belt. Recent surveys in Missouri indicate that waterhemp is the number one problem weed in corn production. To determine the most effective herbicide combinations and application timings in transgenic and conventional corn varieties for waterhemp control, experiments were conducted at ...
Brent A. Sellers +3 more
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Common waterhemp (Amaranthus rudis) interference in soybean
Weed Science, 2002Abstract Common waterhemp has become a problem weed species in Midwest soybean production. Determining the critical interference period after soybean and common waterhemp emergence is necessary for the implementation of weed control practices before soybean seed yield loss occurs.
Aaron G. Hager +3 more
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Common waterhemp (Amaranthus rudis) interference in corn
Weed Science, 2004Abstract Knowing the interference potential of common waterhemp in corn could be beneficial in planning waterhemp management strategies. In 2000, 2001, and 2002, field studies were conducted to examine both early- and late-season common waterhemp interference in corn.
Lawrence E. Steckel, Christy L. Sprague
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Multiple-resistant waterhemp control in herbicide-resistant 3 (HT3) soybean
Canadian Journal of Plant Science, 2020Herbicide-resistant (HR) crops, specifically glyphosate-, glufosinate-, and dicamba-resistant (HT3) soybean, will offer producers a new weed management option for the control of some HR weeds in soybean. Four field experiments were conducted near Cottam and on Walpole Island, ON, Canada, during 2017 and 2018 to assess the control of multiple-resistant
Nader Soltani +2 more
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Pollen Biology and Dispersal Dynamics in Waterhemp (Amaranthustuberculatus)
Weed Science, 2012Waterhemp is a major weed of field crops in the Midwestern United States. Its prevalence is at least partly due to its rapid evolution of resistance to many groups of herbicides over the last two decades. In light of its dioecy and anemophily, pollen movement in waterhemp is considered to be an important factor in the spread of herbicide resistance ...
Jianyang Liu +2 more
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Competitiveness of Herbicide-Resistant Waterhemp (Amaranthus tuberculatus) with Soybean
Weed Science, 2018AbstractWaterhemp [Amaranthus tuberculatus(Moq.) J. D. Sauer] is a troublesome weed occurring in cropping systems throughout the U.S. Midwest with an ability to rapidly evolve herbicide resistance that could be associated with competitive disadvantages. Little research has investigated the competitiveness of differentA.
Thomas R. Butts +4 more
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Tolerance of ozone and drought in common waterhemp (Amaranthus tuberculatus)
Journal of Crop Improvement, 2019Biological invasions in established cropping systems impact biodiversity and agricultural sustainability. Under conditions of multi-year drought and elevated tropospheric ozone (O3), several Amaranthus species have recently become problematic weeds in California. We examined responses of common waterhemp (A. tuberculatus) to 12-h mean O3 exposures of 4,
David A. Grantz +2 more
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A Waterhemp (Amaranthus tuberculatus) Population Resistant to 2,4-D
Weed Science, 2012A waterhemp population from a native-grass seed production field in Nebraska was no longer effectively controlled by 2,4-D. Seed was collected from the site, and dose-response studies were conducted to determine if this population was herbicide resistant.
Mark L. Bernards +4 more
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Common waterhemp (Amaranthus rudis) resistance to protoporphyrinogen oxidase-inhibiting herbicides
Weed Science, 2003Abstract Resistance to protoporphyrinogen oxidase (protox)-inhibiting herbicides was identified in a population of common waterhemp that had been treated with acifluorfen for several years. The protox-resistant biotype of common waterhemp was approximately 34, 82, 8, and 4 times more resistant than a susceptible common waterhemp biotype to acifluorfen,
Douglas E. Shoup +2 more
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