Results 71 to 80 of about 3,231 (199)

Resistência ao glyphosate em biótipos de buva (Conyza spp.) das regiões oeste e sudoeste do Paraná Resistance to glyphosate in Conyza spp. biotypes in western and southwestern Parana, Brazil

open access: yesPlanta Daninha, 2011
A resistência ao glyphosate em biótipos de Conyza spp. em áreas de lavoura das regiões oeste e sudoeste do Paraná causa grandes dificuldades ao manejo e, consequentemente, problemas econômicos e ambientais.
M.M Trezzi   +5 more
doaj   +1 more source

Assessing impacts of drought on weed communities in the Great Lakes region

open access: yesWeed Research, Volume 65, Issue 3, May/June 2025.
Abstract Drought can alter weed occurrence, interference with crops, and act as ecological filters altering community structure. Precipitation patterns in the Great Lakes region of the United States are predicted to vary due to climate change, and understanding the impact of drought on weed communities can support effective management practices.
Ednaldo A. Borgato   +2 more
wiley   +1 more source

Differential growth of glyphosate-resistant and susceptible biotypes of Conyza SPP [PDF]

open access: yes, 2010
Este trabalho foi realizado com o objetivo de comparar, em condição controlada e não-competitiva, o crescimento de biótipos de Conyza canadensis e C. bonariensis resistente e suscetível ao herbicida glifosato, a fim de quantificar os efeitos da pressão ...
CARVALHO, Saul Jorge Pinto de   +3 more
core   +2 more sources

Cereal rye biomass effects on giant ragweed suppression inform management decisions

open access: yesAgrosystems, Geosciences &Environment, Volume 8, Issue 1, March 2025.
Abstract Giant ragweed (Ambrosia trifida L.) has become one of the most troublesome weeds across the US Midwest partially due to its early emergence, high competitiveness, and herbicide resistance evolution. This study aimed to determine the amount of cereal rye (Secale cereale L.) biomass needed to suppress giant ragweed establishment and growth.
Guilherme Chudzik   +4 more
wiley   +1 more source

Germinação de sementes de Conyza canadensis e C. bonariensis em função da presença de alumínio no substrato Germination of Conyza canadensis and C. bonariensis seeds under presence of aluminum in the substrate

open access: yesCiência Rural, 2011
A germinação das sementes pode ser fortemente influenciada pelas condições ambientais, afetando o estabelecimento de comunidades florísticas. As plantas daninhas, apesar das características de rusticidade e capacidade de suas sementes germinarem em ...
Oscar Mitsuo Yamashita   +1 more
doaj   +1 more source

Don’t Delay the Burndown Application [PDF]

open access: yes, 2013
The late arrival of spring has everyone ready to hit the fields running when fields finally dry out. Some will be tempted to forgo applying herbicides prior to planting to ensure fields get planted in case another wet period arrives.
Hartzler, Robert G.
core   +2 more sources

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels [PDF]

open access: yes, 2016
Glyphosate has been the most intensely herbicide used worldwide for decades, and continues to be a single tool for controlling weeds in woody crops. However, the adoption of this herbicide in a wide range of culture systems has led to the emergence of ...
Enzo Bracamonte   +3 more
core   +1 more source

Targeted cattle grazing for shrub control in woody‐encroached oak savannas

open access: yesRestoration Ecology, Volume 33, Issue 3, March 2025.
Woody encroachment threatens savanna ecosystems around the world. In the midwestern United States, remnant oak savannas persist in a woody‐encroached state due to the removal of grazing and fire disturbances from the landscape. Primary oak savanna restoration methods, such as thinning and fire, can promote a dense shrub layer.
Austin M. Yantes   +2 more
wiley   +1 more source

Germinação de sementes de Conyza canadensis e Conyza bonariensis em diferentes condições de temperatura e luminosidade Germination of Conyza canadensis and Conyza bonariensis seeds under different conditions of temperature and light

open access: yesPlanta Daninha, 2011
A buva (Conyza canadensis e C. bonariensis) é uma planta daninha de importância crescente no Brasil. Essas espécies ocorrem em diversas regiões do mundo, sendo importantes infestantes de culturas perenes e anuais sob sistema de semeadura direta, cultivo ...
O.M. Yamashita, S.C. Guimarães
doaj   +1 more source

The importance of an even start [PDF]

open access: yes, 2005
Providing the crop an even start with weeds is still the first step in successful weed management, although the importance of this practice has diminished in many farmers\u27 minds.
Hartzler, Robert G.
core   +2 more sources

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