Herbicide Efficacy on Four<i>Amaranthus</i>Species in Soybean (<i>Glycine max</i>)

Sweat, Jonathan K.; Horak, Michael J.; Peterson, Dallas E.; Lloyd, Randy W.; Boyer, John E.

doi:10.1017/s0890037x00043876

Cited by 69 publications

(86 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The most sensitive species was A. spinosus as previously observed for other herbicides. Excellent control of A. rudis (92%) with pendimethalin (920 g ha -1 ) was reported by Sweat et al (1998), whereas they did not observe acceptable levels of until 56 DAA in a sandy loam soil (1% OM). Field work carried out by Burke & Wilcut (2004) do not corroborate these results since they did not have satisfactory control of Amaranthus palmeri and Amaranthus hybridus at 28 DAT by using 840 g ha -1…”

Section: Resultsmentioning

confidence: 90%

Dose-response curve to soil applied herbicides and susceptibility evaluation of different amaranthus species using model identity

et al. 2015

View full text Add to dashboard Cite

-Greenhouse studies were conducted in [2008][2009] with the objective of adjusting dose-response curves of the main soil-applied herbicides currently used in cotton for the control of Amaranthus viridis, A. hybridus, A. spinosus, A. lividus, as well as comparing susceptibility among different species, using the identity test models. Thirty six individual experiments were simultaneously carried out in greenhouse, in a sandy clay loam soil (21% clay, 2.36% OM) combining increasing doses of the herbicides alachlor, clomazone, diuron, oxyfluorfen, pendimethalin, prometryn, S-metolachlor, and trifluralin applied to each species. Dose-response curves were adjusted for visual weed control at 28 days after herbicide application and doses required for 80% (C 80 ) and 95% (C 95 ) control were calculated. All herbicides, except clomazone and trifluralin, provided efficient control of most Amaranthus species, but substantial differences in susceptibility to herbicides were found. In general, A. lividus was the least sensitive species, whereas A. spinosus demonstrated the highest sensitivity to herbicides. Alachlor, diuron, oxyfluorfen, pendimethalin, S-metolachlor, and prometryn are efficient alternatives to control Amaranthus spp. in a range of doses that are currently lower than those recommended to cotton.Keywords: cotton, dose-response curve, pigweed, tolerance. RESUMO -Em

show abstract

Section: Resultsmentioning

confidence: 90%

Dose-response curve to soil applied herbicides and susceptibility evaluation of different amaranthus species using model identity

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Com esses dados, pôde-se calcular matematicamente os valores de C 50 (Carvalho et al, 2005) A comparação dos valores de C 50 comprova a suscetibilidade diferencial das espécies de plantas daninhas do gênero Amaranthus ao trifloxysulfuron-sodium e ao chlorimuronethyl. Resultados de suscetibilidade diferencial de espécies de Amaranthus a herbicidas também foram obtidos por Mayo et al (1995), Manley et al (1996), Sweat et al (1998) e Gosset & Toler (1999. Contudo, a suscetibilidade diferencial de espécies não se restringe ao gênero Amaranthus.…”

Section: Constatou-se Que As Espécies Deunclassified

Suscetibilidade diferencial de plantas daninhas do gênero Amaranthus aos herbicidas trifloxysulfuron-sodium e chlorimuron-ethyl

et al. 2006

View full text Add to dashboard Cite

RESUMO -Este trabalho teve por objetivo avaliar a suscetibilidade de cinco espécies de plantas daninhas do gênero Amaranthus a herbicidas aplicados em pós-emergência. As espécies avaliadas foram: A. deflexus (caruru-rasteiro), A. hybridus (caruru-roxo), A. retroflexus (carurugigante), A. spinosus (caruru-de-espinho) e A. viridis (caruru-de-mancha). O trabalho foi dividido em duas fases. Na primeira, as espécies de plantas daninhas foram submetidas à aplicação de 12 tratamentos herbicidas em pós-emergência. Na segunda, os herbicidas trifloxysulfuronsodium e chlorimuron-ethyl foram avaliados com a metodologia de curvas de dose-resposta, repetida duas vezes. Os herbicidas foram aplicados sobre plantas com 5-6 folhas e as doses utilizadas na segunda fase foram: 16D, 4D, D, 1/4D, 1/16D, 1/64D e ausência do produto, em que D é a dose recomendada de cada herbicida. As doses utilizadas (D) foram de 3,75 e 7,5 g ha -1 para o herbicida trifloxysulfuron e 12,5 e 17,5 g ha -1 para chlorimuron, na primeira e na segunda condução, respectivamente. Na primeira fase, foram avaliados o controle percentual e a massa seca das parcelas aos 20 dias após a aplicação (DAA); na segunda, avaliou-se o controle percentual aos 20 DAA.

show abstract

“…Several reports show that sulfentrazone (Sweat et al 1998;Hager et al 2002a) and lactofen (Hager et al 2003) have excellent activity on waterhemp; however, these products are not registered for use in Canada. The PRE herbicides, metolachlor at 1680 g a.i.…”

mentioning

confidence: 99%

Control of herbicide-resistant common waterhemp (Amaranthus tuberculatus var. rudis) with pre- and post-emergence herbicides in soybean

Vyn¹,

Swanton²,

Weaver³

et al. 2007

Can. J. Plant Sci.

View full text Add to dashboard Cite

Herbicide Efficacy on FourAmaranthusSpecies in Soybean (Glycine max)

Cited by 69 publications

References 8 publications

Dose-response curve to soil applied herbicides and susceptibility evaluation of different amaranthus species using model identity

Dose-response curve to soil applied herbicides and susceptibility evaluation of different amaranthus species using model identity

Suscetibilidade diferencial de plantas daninhas do gênero Amaranthus aos herbicidas trifloxysulfuron-sodium e chlorimuron-ethyl

Control of herbicide-resistant common waterhemp (Amaranthus tuberculatus var. rudis) with pre- and post-emergence herbicides in soybean

Contact Info

Product

Resources

About