Results 61 to 70 of about 3,231 (199)

Response of Horseweed (Erigeron canadensis) from New York Vineyards and Orchards to Paraquat and Diquat

open access: yesHortScience
Horseweed (Erigeron canadensis L.) is a troublesome species in specialty crops, including orchards and vineyards. Some growers in New York have adopted paraquat [photosystem I (PSI) electron diverter] for in-season weed control as an alternative to ...
Bethany M. Schulteis   +5 more
doaj   +1 more source

Status and concerns for glyphosate resistance [PDF]

open access: yes, 2003
Glyphosate resistance was first reported in 1996 from rigid ryegrasss in an orchard in Australia. Subsequently, several additional glyphosate-resistant weed populations have been identified: rigid ryegrass in a wheat production system in Australia and in
Hartzler, Robert G., Owen, Michael D.
core   +2 more sources

Similarity in Persistence Traits Is Important for CoExistence With Perennial Invasive Asclepias syriaca but Not Annual Invasive Conyza canadensis

open access: yesJournal of Vegetation Science, Volume 36, Issue 6, November/December 2025.
We tested two alternative hypotheses regarding the co‐occurrence of selected invasive species with other species based on functional traits: (1) if limiting similarity is the dominant assembly process; the less similar species are more likely to associate with the targeted invasive species, or (2) if environmental filtering is more important; then more
Anikó Csecserits   +7 more
wiley   +1 more source

Machine learning and handcrafted image processing methods for classifying common weeds in corn field

open access: yesSmart Agricultural Technology, 2023
Weed management practices strive to reduce weeds, which compete with crops for nutrients, sunlight, and water and are thus important for maintaining yield. In most weed management practices, the first step is to identify or classify weeds.
Harsh Pathak   +3 more
doaj   +1 more source

Biology and Management of Horseweed and Hairy Fleabane in California [PDF]

open access: yes, 2008
Author(s): Shrestha, Anil; Hembree, Kurt; Wright, Steven | Abstract: Horseweed and hairy fleabane are showing increased resistance to chemical controls, including glyphosate. By learning about their biology and other control alternatives, you can do a better job of keeping on top of this pest problem.
Shrestha, Anil   +2 more
openaire   +3 more sources

Comparing the impacts of patch‐burn grazing on vegetation in two northern tallgrass prairies

open access: yesConservation Science and Practice, Volume 7, Issue 10, October 2025.
We evaluated two of the earliest and largest patch‐burn grazing projects in the eastern tallgrass prairie of Minnesota, an ecosystem that has undergone extensive fragmentation and invasion by non‐native species. Our results in grazed and ungrazed plots varied with differences in stocking rate and fire frequency.
Fred S. Harris   +2 more
wiley   +1 more source

Manejo de buva em áreas cultivadas com milho safrinha e aveia. [PDF]

open access: yes, 2018
A infestação de buva (Conyza spp) tem aumentado significativamente nas áreas de produção do sistema soja-trigo-milho especialmente nos estados do Paraná e Rio Grande do Sul.
ADEGAS, F. S.   +10 more
core  

Impact of soybean planting date and row width on weed suppression and yield

open access: yesAgronomy Journal, Volume 117, Issue 5, September/October 2025.
Abstract Variable weather patterns and extended growing seasons over the last couple of decades have prompted growers to plant soybean [Glycine max (L.) Merr.] earlier than the historical standard. Field experiments were conducted in Michigan over three site‐years to evaluate soybean planting date, row width, and herbicide program on weed suppression ...
Matthew Goddard   +2 more
wiley   +1 more source

Glyphosate resistance and EPSPS gene amplification confirmed in a waterhemp (Amaranthus tuberculatus) biotype from Connecticut

open access: yesAgrosystems, Geosciences &Environment, Volume 8, Issue 2, June 2025.
Abstract Waterhemp (Amaranthus tuberculatus) is an economically important broadleaf weed that threatens corn and soybean production across the United States. A waterhemp biotype (CT_Res [resistant biotype from Connecticut]) surviving multiple glyphosate applications was identified from a corn field in Connecticut (CT). Greenhouse and laboratory studies
Jatinder S. Aulakh   +4 more
wiley   +1 more source

On glyphosate [PDF]

open access: yes, 2016
This Editorial briefly discusses the current issues surrounding glyphosate -the most controversial pesticide active ingredient of our time.
Kőmíves, Tamás, Schröder, Peter
core   +3 more sources

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