Results 31 to 40 of about 324 (160)

Managing herbicide‐resistant waterhemp (Amaranthus tuberculatus [Moq.] J.D. Sauer) seedbanks by integrating several management tactics

Agrosystems, Geosciences & Environment, 2023
Herbicide‐resistant waterhemp (Amaranthus tuberculatus [Moq.] J.D. Sauer) continues to threaten the productivity of many US crops. Thus, integrating non‐herbicidal tactics with herbicides to reduce weed seedbanks is gaining popularity.
Austin H. Schleich, Mark A. Licht, Micheal D. K. Owen, Ramawatar Yadav   +3 more
doaj   +1 more source

Investigating the Efficacy of Selected Very-Long-Chain Fatty Acid-Inhibiting Herbicides on Iowa Waterhemp (Amaranthus tuberculatus) Populations with Evolved Multiple Herbicide Resistances

Agronomy, 2021
Very long chain fatty acid (VLCFA)-inhibiting herbicides (Herbicide group (HG) 15) have been applied to corn and soybean fields in Iowa since the 1960s.
Eric A. L. Jones, Micheal D. K. Owen
doaj   +1 more source

Evaluation of foliar‐applied post‐emergence corn–soybean herbicides on giant ragweed and waterhemp control in Wisconsin

Agrosystems, Geosciences & Environment, 2023
Giant ragweed (Ambrosia trifida L.) and waterhemp (Amaranthus tuberculatus [Moq.] J.D.Sauer) are highly competitive and the most troublesome weeds in corn (Zea mays L.) and soybean (Glycine max Merr.) cropping systems in Wisconsin. Field experiments were
Rodrigo Werle, Ahmadreza Mobli, Ryan P. DeWerff, Nicholas J. Arneson   +3 more
doaj   +1 more source

Different nontarget-site mechanisms underlie resistance to dicamba and 2,4-D in an Amaranthus tuberculatus population. [PDF]

Pest Manag Sci
Weak phenotypic and genetic associations between resistance to dicamba and 2,4‐D suggest that different nontarget‐site mechanisms contribute to these traits in an Amaranthus tuberculatus population from Illinois. Abstract BACKGROUND Amaranthus tuberculatus (Moq.) Sauer (waterhemp) has emerged as one of several weed species that is resistant to ...
Werle IS, Bobadilla LK, Raiyemo DA, Lopez AJ, Mesquita Machado F, Tranel PJ.   +5 more
europepmc   +2 more sources

Performance of Two Bioherbicide Fungi for Waterhemp and Pigweed Control in Pumpkin and Soybean [PDF]

Plant Disease, 2011
Common waterhemp (Amaranthus rudis) and pigweeds (Amaranthus spp.) are troublesome weeds in many cropping systems and have evolved resistance to several herbicides. Field trials to further develop Microsphaeropsis amaranthi and Phomopsis amaranthicola as bioherbicides for control of waterhemp and pigweeds were conducted to test the effectiveness of ...
Loretta M, Ortiz-Ribbing, Kenny R, Glassman, Gordon K, Roskamp, Steven G, Hallett   +3 more
openaire   +2 more sources

Climatic Constraints to the Potential of Microsphaeropsis amaranthi as a Bioherbicide for Common Waterhemp [PDF]

Phytopathology®, 2006
The fungal plant pathogen Microsphaeropsis amaranthi is a candidate bioherbicide for the control of weedy Amaranthus species since it grows and sporulates readily in culture, is a pathogen of a number of important weed species, and is host-restricted to the family Amaranthaceae.
David A, Smith, David A, Doll, Daljit, Singh, Steven G, Hallett   +3 more
openaire   +2 more sources

Determination of the Mechanisms of MCPA Resistance in <i>Amaranthus powellii</i>. [PDF]

Plant Direct
ABSTRACT Resistance to 2‐methyl‐4‐chloro‐phenoxyacetic acid (MCPA) was recently confirmed in a population of green pigweed (Amaranthus powellii) from Dresden, Ontario, Canada, with a resistance factor of 4.4. Resistance to synthetic auxin herbicides in Amaranthus species has previously been linked to non‐target site resistance mechanisms with low‐level
Aicklen I, Jugulam M, Gaines T, Kramer W, Laforest M, Robinson D, Sikkema P, Tardif F.   +7 more
europepmc   +2 more sources

Distinct Detoxification Mechanisms Confer Resistance to Mesotrione and Atrazine in a Population of Waterhemp       [PDF]

Plant Physiology, 2013
Abstract Previous research reported the first case of resistance to mesotrione and other 4-hydroxyphenylpyruvate dioxygenase (HPPD) herbicides in a waterhemp (Amaranthus tuberculatus) population designated MCR (for McLean County mesotrione- and atrazine-resistant).
Rong, Ma, Shiv S, Kaundun, Patrick J, Tranel, Chance W, Riggins, Daniel L, McGinness, Aaron G, Hager, Tim, Hawkes, Eddie, McIndoe, Dean E, Riechers   +8 more
openaire   +2 more sources

Multiple herbicide-resistant waterhemp control with Group 15 herbicides

Weed Technology, 2023
AbstractWaterhemp has evolved resistance to seven herbicide modes of action in the United States and to five in Canada, which limits weed control options for producers. The objective of this research was to quantify the level and duration of residual control of multiple herbicide-resistant (MHR) waterhemp with five Group 15 herbicides (acetochlor ...
Hannah E. Symington, Nader Soltani, Allan C. Kaastra, David C. Hooker, Darren E. Robinson, Peter H. Sikkema   +5 more
openaire   +1 more source

Gene Duplication and Aneuploidy Trigger Rapid Evolution of Herbicide Resistance in Common Waterhemp [PDF]

Plant Physiology, 2018
An increase in gene copy number is often associated with changes in the number and structure of chromosomes, as has been widely observed in yeast and eukaryotic tumors, yet little is known about stress-induced chromosomal changes in plants. Previously, we reported that the EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) gene, the molecular target ...
Dal-Hoe Koo, Mithila Jugulam, Karthik Putta, Ivan B. Cuvaca, Dallas E. Peterson, Randall S. Currie, Bernd Friebe, Bikram S. Gill   +7 more
openaire   +2 more sources