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Showing 1 to 11 of 11 for “"herbicide resistant weeds"”.
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Herbicide resistant weeds in Missouri : sources and solutions
Herbicide resistant weeds continue to invade new territories each year. Two studies were designed to identify both the spread and the current status of herbicide resistant weeds in Missouri. In 2016 and 2017, 98 separate commercially available bird feed mixes were examined for the presence of weed …
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Evaluation of Very-Long-Chain Fatty Acid-Inhibiting Herbicides in Arkansas Rice Production
<p>Because of the evolution of herbicide-resistant weeds, such as barnyardgrass and red rice in rice, there is a need for alternative herbicide sites of action. Very-long-chain fatty acid (VLCFA)-inhibiting herbicides are not labeled for use in U.S. rice production; however, this site of action …
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Mechanism of Resistance in Common Ragweed to PPO-inhibiting Herbicides
Synthetic herbicides have been reliable tools to help growers produce a healthy and profitable crop for several decades but their efficacy is under attack from the evolution of herbicide-resistant weeds. Almost all commercially available herbicidal modes of action have documented cases of …
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Use of Harvest Weed Seed Control Strategies in Arkansas Soybean
… management programs; however, a sole reliance on herbicides will place more resistance selection pressure on the weeds to which the herbicide is being applied. As herbicide resistance continues to grow and rob growers of yield, alternative weed control options are being sought to create complex …
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Evaluation of Benzobicyclon for use in Midsouthern Rice (Oryza sativa) Systems
<p>A new herbicide site of action (SOA) is needed by rice (Oryza sativa L.) producers in the Midsouth for the control of problematic and herbicide-resistant weeds. Currently, six problematic weeds are relevant to Midsouthern rice producers because of resistance to at least one SOA, if not more. …
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Optimizing Laser and Liquid Nitrogen Treatments for Weed Control in Turfgrass Systems
The increasing prevalence of herbicide-resistant weeds and growing environmental concerns surrounding synthetic pesticides are driving innovation in non-chemical weed control technologies. This research evaluated two emerging approaches based on the premise of machine-vision-based, individual-plant …
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Evaluation of integrated weed management techniques and their nuances in Virginia crop production
Herbicide resistant weeds are driving implementation of integrated weed management (IWM). A new tactic to manage weeds is harvest weed seed control (HWSC), which targets weed seeds retained on the plant at crop harvest and either destroys, removes, or concentrates them. Research is limited on the …
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Control, Assessment and Glyphosate Resistance of Palmer Amaranth (Amaranthus palmeri S. Wats) in Virginia
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 …
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EFFECTS OF ANTHROPOGENIC SELECTION PRESSURE ON THE EVOLUTION OF A COMMON AGRICULTURAL WEED: DOES ADAPTATION COME WITH A DETECTABLE COST? A STUDY OF GLYPHOSATE-RESISTANT (GR) AND -SUSCEPTIBLE (GS) BIOTYPES OF Conyza canadensis
As the acreage of glyphosate-resistant (GR) cropping systems increases, so does the occurrence of herbicide-resistant weeds in the landscape. Biotypes of GR <italic>Conyza canadensis</italic> were first observed in Delaware, USA, in 2000. Since the first documentation of GR <italic>C. …
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Impact of arbuscular mycorrhizal fungi on crop and weed growth: potential implications for integrated weed managment
With the growing problem of herbicide-resistant weeds, efficient and environmentally friendly non-chemical weed control approaches are needed to develop multi-tactic integrated weed management (IWM) programs. Using soil microbes for weed suppression has been considered as one of the non-chemical …
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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 …