Results 21 to 30 of about 276 (121)

Carfentrazone-ethyl resistance in an Amaranthus tuberculatus population is not mediated by amino acid alterations in the PPO2 protein. [PDF]

PLoS ONE, 2019
To date, the only known mechanism conferring protoporphyrinogen IX oxidase (PPO)-inhibitor resistance in waterhemp (Amaranthus tuberculatus) is a glycine deletion in PPO2 (ΔG210), which results in cross-resistance to foliar PPO-inhibiting herbicides ...
Olivia A Obenland, Rong Ma, Sarah R O'Brien, Anatoli V Lygin, Dean E Riechers   +4 more
doaj   +2 more sources

Targeted herbicide spraying systems: role of nozzle type, number of nozzle activation, nozzle orientation, and boom height on spray coverage and weed control. [PDF]

Pest Manag Sci
Targeted herbicide application technology performance depends on sprayer configuration. Across five studies, activation of multiple, overlapping nozzles and maintaining appropriate boom height consistently improved spray coverage and weed control, highlighting the importance of optimized sprayer setup for effective and reliable weed control.
Ugljic Z, Mobli A, DeWerff R, Werle R.
europepmc   +2 more sources

Target-site and non-target-site mechanisms confer multiple herbicide resistance in waterhemp (Amaranthus tuberculatus) accessions from Wisconsin. [PDF]

Pest Manag Sci
The A101 accession is the first confirmed case of hydroxyphenyl pyruvate dioxygenase resistance in Amaranthus tuberculatus in Wisconsin, and the first report of P450s associated with atrazine resistance in A. tuberculatus globally. Abstract BACKGROUND A preliminary screening identified a multiple herbicide‐resistant waterhemp, Amaranthus tuberculatus ...
Faleco FA, Werle IS, Lopez AJ, Raiyemo DA, Tranel PJ, Colquhoun JB, Renz MJ, Stoltenberg DE, Werle R.   +8 more
europepmc   +2 more sources

Growth and development of multiple waterhemp (Amaranthus tuberculatus) cohorts in corn and soybeans

Frontiers in Agronomy, 2022
Waterhemp is a troublesome weed species in cropping systems throughout Wisconsin and much of the US Midwest. Coupled with extended emergence window, rapid growth, high genetic diversity, and herbicide resistance to multiple sites of action, waterhemp ...
Nikola Arsenijevic, Ryan DeWerff, Shawn Conley, Matthew Dwain Ruark, Rodrigo Werle   +4 more
doaj   +1 more source

Studying the Effects of Waterhemp Competition on Yield and Phytochemical Content of High-cannabidiol Hemp in Plasticulture

HortTechnology, 2022
The impacts of weed interference on hemp (Cannabis sativa) yield are largely unstudied despite causing serious economic losses in most cropping systems.
Avery Shikanai, Karla L. Gage
doaj   +1 more source

Unraveling the Role of P450 Reductase in Herbicide Metabolic Resistance Mechanism. [PDF]

Plant Direct
ABSTRACT Plants require cytochrome P450 reductase (CPR) to supply two electrons for cytochrome P450 monooxygenase enzymes (P450) to react with an organic substrate. The transfer of electrons to the P450 active site in the P450 catalytic site relies on a robust and intricate CPR:P450 complex in the endoplasmic reticulum membrane.
Rigon CAG, Iwakami S, Gaines TA, Dayan FE.   +3 more
europepmc   +2 more sources

A molecular cytogenetic perspective on chromosome biology and crop improvement. [PDF]

Plant Genome
Abstract The age of molecular cytogenetic analysis of crop plants dawned in the late 1960s and early 1970s with new advances in the identification of somatic chromosomes by C‐banding and fluorescence in situ hybridization concurrent with advances in DNA cloning, sequencing, and mapping. In this perspective article dedicated to Ronald Phillips, I review
Gill BS.
europepmc   +2 more sources

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