Results 41 to 50 of about 814 (191)
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 +3 more
openaire +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 +3 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 +5 more
openaire +1 more source
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 +8 more
openaire +2 more sources
Control and Distribution of Herbicide Resistant Waterhemp (Amaranthus tuberculatus) in Ontario [PDF]
, 2019 Field surveys were conducted in 2016, 2017 and 2018 to build on previous distribution research. Waterhemp was located at 42 additional locations in seven Ontario counties and the province of Quebec. Greenhouse testing of populations collected between 2014 and 2017 has shown that 100% of the populations are resistant to Group 2 herbicides, 83% to Group ...
Benoit, Lauren
openaire +2 more sources
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 +7 more
openaire +2 more sources
Frontiers in Agronomy, 2021 Roundup Ready 2 Xtend® [glyphosate- and dicamba-resistant (DR)] soybean is a novel trait option for postemergence (POST) control of herbicide-resistant broadleaf weeds in soybean.
Sarah Striegel +5 more
doaj +1 more source
The biology and management of waterhemp in Indiana [PDF]
, 2016 Waterhemp is a dioecious weed species indigenous to the Midwestern United states yet it has only recently become problematic in agronomic crop production in Indiana.
Heneghan, Joseph M
core +2 more sources
Herbicide Programs for Waterhemp Control in Soybean [PDF]
, 2021 Waterhemp is a dioecious (male and female flowers on separate plants) pigweed with a high genetic diversity. Consequently, this pigweed has a high propensity to adapt to control tactics and has evolved resistance to herbicides from as many as 6 or 7 ...
Jha, Prashant
core
Performance of Preemergence Herbicides on Waterhemp Control in Soybean [PDF]
, 2020 The battle against waterhemp is complicated mainly because of its extended emergence period (early May until August). Preemergence (PRE) soil residual herbicides serve as a foundation for managing waterhemp, but require follow-up treatments with ...
Jha, Prashant
core