Results 11 to 20 of about 730 (164)

Development stages horseweed in soybeans competition [PDF]

open access: yesArquivos do Instituto Biológico, 2018
: The objective of this study was to evaluate the relative competitive ability of soybean with different development stages of hairy fleabane. Two experiments were conducted in greenhouse, in a completely randomized design.
Diecson Ruy Orsolin da Silva   +2 more
doaj   +3 more sources

Soybean (Glycine max L.) canopy response to simulated dicamba vapor drift using unmanned aerial sensing. [PDF]

open access: yesPest Manag Sci
Sensitive soybean canopies subjected to 0.056 g a.e. ha−1 dicamba were identifiable 8 days after treatment using UAS correlating to visible and nonvisible portions of the electromagnetic spectrum. Abstract BACKGROUND Concerns about off‐target dicamba exposure to sensitive vegetation have escalated following the commercialization of dicamba‐tolerant (DT)
Kerr DR   +5 more
europepmc   +2 more sources

Functional synergy and genomic linkage of glyphosate resistance traits in Canada fleabane. [PDF]

open access: yesPest Manag Sci
Stacking target‐site and non‐target‐site glyphosate resistance mechanisms in Conyza canadensis results in strong synergistic effects. This study quantifies gene × gene interactions and maps linked resistance loci, advancing our understanding of herbicide resistance genetics and informing management strategies.
Page ER   +4 more
europepmc   +2 more sources

No evidence for early fitness penalty in glyphosate‐resistant biotypes of Conyza canadensis: Common garden experiments in the absence of glyphosate [PDF]

open access: yesEcology and Evolution, 2019
Strong selection from herbicides has led to the rapid evolution of herbicide‐resistant weeds, greatly complicating weed management efforts worldwide. In particular, overreliance on glyphosate, the active ingredient in RoundUp®, has spurred the evolution ...
Zachery T. Beres   +2 more
doaj   +2 more sources

Rapid Detection of Horseweed and Black Picker Sensitivity Levels to Saflufenacil [PDF]

open access: yesPlanta Daninha, 2019
: Resistance to herbicides is one of the main factors responsible for weed control failures. Once uncontrolled and stressed, resistant weeds demand a new application of herbicides from different modes of action, which results in higher monetary costs and
L. VARGAS   +6 more
doaj   +4 more sources

Shikimate accumulation, glyphosate absorption and translocation in horseweed biotypes [PDF]

open access: yesPlanta Daninha, 2015
In Brazil, few research works on mechanisms of weed resistance to glyphosate have been conducted so far. Therefore, this research aimed to study analytical procedures determining the relation between the concentration of plant shikimate after glyphosate ...
V.C.B. CARDINALI   +6 more
doaj   +4 more sources

Occurrence of Horseweed Biotypes with Low Susceptibility to Glyphosate in the States of Rio Grande do Sul, Paraná and Mato Grosso do Sul, Brazil [PDF]

open access: yesPlanta Daninha, 2019
: Horseweed is an annual cycle weed naturally controlled by the herbicide glyphosate. However, the continued use of this product has selected tolerant and resistant populations.
M.A. RIZZARDI   +3 more
doaj   +2 more sources

Antagonistic Interactions between Dicamba and Glyphosate on Barnyardgrass (Echinochloa crus-galli) and Horseweed (Erigeron canadensis) Control

open access: yesAgronomy, 2022
Dicamba plus glyphosate (DpG) tank mixture has been widely adopted for broad-spectrum weed control. However, recent studies indicated antagonistic interactions between these herbicides.
Estefania G. Polli   +3 more
doaj   +1 more source

Rapid vacuolar sequestration: the horseweed glyphosate resistance mechanism [PDF]

open access: yesPest Management Science, 2010
AbstractBACKGROUND: Glyphosate‐resistant (GR) weed species are now found with increasing frequency and threaten the critically important GR weed management system.RESULTS: The reported 31P NMR experiments on glyphosate‐sensitive (S) and glyphosate‐resistant (R) horseweed, Conyza canadensis (L.) Cronq., show significantly more accumulation of glyphosate
Xia, Ge   +3 more
openaire   +2 more sources

Mechanisms of multiple resistance to herbicides in Conyza sp. complex

open access: yesJournal of Plant Protection Research, 2022
Reports of weed resistance to herbicides have increased in recent years and differentiation in resistance mechanisms is considered to be a concern for the future of weed science.
Luisa Carolina Baccin   +5 more
doaj   +1 more source

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