Idioma:

Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) Increases Herbicide Use, Tillage, and Hand-Weeding in Georgia Cotton

Sosnoskie, Lynn M. ; Culpepper, A. Stanley

Weed science, 2014-04, Vol.62 (2), p.393-402 [Periódico revisado por pares]

810 East 10th Street, Lawrence, KS 66044-8897: Weed Science Society of America

Texto completo disponível

Citações Citado por

Enviar para

Título:
Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) Increases Herbicide Use, Tillage, and Hand-Weeding in Georgia Cotton
Autor: Sosnoskie, Lynn M. ; Culpepper, A. Stanley
Assuntos: 2,4-D ; active ingredients ; Agronomy. Soil science and plant productions ; Amaranth ; Amaranthus palmeri ; Biological and medical sciences ; Chemical control ; Cotton ; Crop economics ; Crop management ; Crop production ; Crops ; diuron ; evolution ; Extension ; extension agents ; flumioxazin ; fluometuron ; fomesafen ; Fundamental and applied biological sciences. Psychology ; glufosinate ; glyphosate ; glyphosate-resistance ; Gossypium hirsutum ; growers ; Herbicide resistance ; Herbicides ; input costs ; management systems ; manual weed control ; metolachlor ; MSMA (herbicide) ; paraquat ; Parasitic plants. Weeds ; pendimethalin ; Phytopathology. Animal pests. Plant and forest protection ; pyrithiobac ; resistance management ; survey ; surveys ; SYMPOSIUM ; Tillage ; trifluralin ; Weed control ; Weeds
É parte de: Weed science, 2014-04, Vol.62 (2), p.393-402
Notas: http://dx.doi.org/10.1614%2FWS-D-13-00077.1
Descrição: In 2005, the existence of glyphosate-resistance in Palmer amaranth was confirmed at a single 250 ha field site in Macon County, Georgia. Currently, all cotton producing counties in Georgia are infested, to some degree, with glyphosate-resistant Palmer amaranth. In 2010 and 2011, surveys were administered to Georgia growers and extension agents to determine how the development of glyphosate-resistance has affected weed management in cotton. According to respondents, the numbers of cotton acres that were treated with paraquat, glufosinate and residual herbicides effective against Palmer amaranth more than doubled between 2000 to 2005 and 2006 to 2010. Glyphosate use declined between 2000 to 2005 and 2006 to 2010 although, on average, the active ingredient was still applied to a majority of cotton acres. Although grower herbicide input costs have more than doubled following the evolution and spread of glyphosate resistance, chemically-based control of Palmer amaranth is still not adequate. As a consequence, Georgia cotton growers hand weeded 52% of the crop at an average cost of $57 per hand-weeded ha; this represents a cost increase of at least 475% as compared to the years prior to resistance. In addition to increased herbicide use and hand weeding, growers in Georgia are also using mechanical, in-crop cultivation (44% of acres), tillage for the incorporation of preplant herbicides (20% of the acres), and post-harvest deep-turning (19% of the acres every three years) for weed control. Current weed management systems are more diverse, complex and expensive than those employed only a decade ago, but are effective at controlling glyphosate-resistant Palmer amaranth in glyphosate-resistant cotton. The success of these programs may be related to producers improved knowledge about herbicide resistance, and the biological attributes that make Palmer amaranth so challenging, as well as their ability to implement their management programs in a timely manner. Nomenclature: 2,4-D; diuron; fomesafen; flumioxazin; fluometuron; glyphosate; glufosinate; MSMA; paraquat; pendimethalin; pyrithiobac; S-metolachlor; trifluralin; Palmer amaranth, Amaranthus palmeri (S. Wats); cotton, Gossypium hirsutum L.
Editor: 810 East 10th Street, Lawrence, KS 66044-8897: Weed Science Society of America
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) Increases Herbicide Use, Tillage, and Hand-Weeding in Georgia Cotton

Sosnoskie, Lynn M. ; Culpepper, A. Stanley

810 East 10th Street, Lawrence, KS 66044-8897: Weed Science Society of America

Buscando em bases de dados remotas. Favor aguardar.