Results 81 to 90 of about 664 (163)

Determination of the Mechanisms of MCPA Resistance in Amaranthus powellii

Plant Direct, Volume 9, Issue 9, September 2025.
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
Isabelle Aicklen, Mithila Jugulam, Todd Gaines, William Kramer, Martin Laforest, Darren Robinson, Peter Sikkema, François Tardif   +7 more
wiley   +1 more source

Control of Glyphosate-Resistant Common Waterhemp (Amaranthus rudis) in Glufosinate-Resistant Soybean

, 2017
Glyphosate-resistant (GR) common waterhemp has become a significant problem weed in Nebraska and several Midwestern states. Several populations of GR common waterhemp are also resistant to acetolactate synthase (ALS)-inhibiting herbicides, making them ...
Greg R. Kruger, Steven Z. Knezevic, Amit J. Jhala, Lowell D. Sandell, Debalin Sarangi   +4 more
core   +1 more source

Evaluation of the DJI AGRAS T40 UAV for application of herbicides in soybean

Weed Technology
The use of unmanned aerial vehicles (UAVs) shows promise as a potential new way to apply herbicides; however, relatively few studies have been conducted to determine how UAV application parameters influence spray deposition and weed control.
Trace Thompson, Douglas J. Spaunhorst, Kevin W. Bradley   +2 more
doaj   +1 more source

Biology, Ecology and Management of Common Waterhemp

, 2003
These studies focused on examining the biology and ecology of common waterhemp. This research evaluates the effect shade may have on common waterhemp growth and seed production, what effect row spacing may have on common waterhemp, crop and tillage ...
Steckel, Lawrence Edward
core  

Population genetics of herbicide resistance in waterhemp [PDF]

, 2010
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 ...
Thinglum, Kate A.
core  

Dose-response of common lambsquarters, redroot pigweed, and foxtail species to pyroxasulfone plus encapsulated saflufenacil applied preemergence to corn

Weed Technology
In September 2024, BASF Canada introduced a new premixture of pyroxasulfone and encapsulated saflufenacil to control weeds in corn production. Limited research has been conducted to determine the biologically effective dose of this new premixture for the
Erica D. Nelson, Nader Soltani, Christopher Budd, Peter H. Sikkema, Darren E. Robinson   +4 more
doaj   +1 more source

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

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   +1 more source

Mean waterhemp biomass after treatment with field-use rates of PPO-inhibiting herbicides in the greenhouse.

, 2019
Mean waterhemp biomass after treatment with field-use rates of PPO-inhibiting herbicides in the greenhouse.
Dean E. Riechers (6438653), Rong Ma (500564), Anatoli V. Lygin (6589535), Sarah R. O’Brien (6589532), Olivia A. Obenland (6589529)   +4 more
core   +1 more source

Amaranthus develops resistance to HPPD inhibitors in seed corn production fields - another example of lack of diversity in the weed control program

Julius-Kühn-Archiv, 2012
In 2010, a hybrid seed corn production field was confirmed to be infested with a population of Amaranthus tuberculatus that was not controlled by postemergence applications of all tested commercially available HPPDinhibitor herbicides.
Michel, Albrecht, Foresman, Charles L., Polge, Nicholas D., Kaudun, Shiv S., Le Goupil, Gael   +4 more
doaj   +1 more source

Management Options and Factors Affecting Control of a Common Waterhemp (Amaranthus rudis) Biotype Resistant to Protoporphyrinogen Oxidase-Inhibiting Herbicides

, 2020
Repeated use of protox-inhibiting herbicides has resulted in a common waterhemp (Amaranthus rudis Sauer) biotype that survived lactofen applied up to 10 times the labeled rate.
Kelly A Nelson, Dana B Harder, Reid J Smeda   +2 more
core