MULTIPLE RESISTANCE OF Amaranthus palmeri TO ALS AND EPSPS INHIBITING HERBICIDES IN THE STATE OF MATO GROSSO, BRAZIL

Netto, Acácio Gonçalves; Nicolai, Marcelo; Carvalho, Saul Jorge Pinto de; Borgato, Ednaldo Alexandre; Christoffoleti, Pedro Jacob

doi:10.1590/s0100-83582016340300019

Cited by 21 publications

(14 citation statements)

References 21 publications

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“…80 A. palmeri resistant to glyphosate and ALS inhibitors was first detected in Brazil in Mato Grosso state 2015, but has been contained so far through cooperative efforts between the Brazilian government and local farmer associations. [107][108][109][110] A 2016 survey of HR weeds in Uruguay found 3500 ha affected by GR A. palmeri. 83…”

Section: Wileyonlinelibrarycom/journal/psmentioning

confidence: 99%

The challenge of herbicide resistance around the world: a current summary

Peterson¹,

Collavo

Ovejero

et al. 2018

Pest Management Science

218

164

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Herbicide-resistant weeds have been observed since the early years of synthetic herbicide development in the 1950s and 1960s. Since that time there has been a consistent increase in the number of cases of herbicide resistance and the impact of herbicide-resistant weeds. Although the nature of crop production varies widely around the world, herbicides have become a primary tool for weed control in most areas. Dependence on herbicides continues to increase as global populations migrate away from rural areas to cities and the agricultural labor force declines. This increased use of herbicides and the concurrent selection pressure have resulted in a rise in cases of multiple resistance, leaving some farmers with few or no herbicide options for certain weed infestations. Global population and economic forces drive many farmer choices regarding crop production and weed control. The challenge is how to insert best management practices into the decision-making process while addressing various economic and regulatory needs. This review endeavors to provide a current overview of herbicide resistance challenges in the major crop production areas of the world and discusses some research initiatives designed to address portions of the problem. © 2017 Society of Chemical Industry.

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Section: Wileyonlinelibrarycom/journal/psmentioning

confidence: 99%

The challenge of herbicide resistance around the world: a current summary

Peterson¹,

Collavo

Ovejero

et al. 2018

Pest Management Science

218

164

View full text Add to dashboard Cite

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“…Globaly, there are 226 reports of herbicides resistance by the genus Amaranthus. In Brazil, the most recent cases include A. retroflexus resistant to protoporphyrinogen oxidase (PPO) inhibitors (Heap, 2019) and A. palmeri, simultaneously resistant to glyphosate and ALS inhibitors (Gonçalves Netto et al, 2016). In cotton fields, A. retroflexus populations resistant to trifloxysulfuron-sodium and pyrithiobac-sodium were found (Francischini et al, 2014b) as well as A. viridis resistant to trifloxysulfuron-sodium (Francischini et al, 2014a), applied in postemergence.…”

Section: Introductionmentioning

confidence: 99%

Multiple-and Cross-Resistance of Amaranthus retroflexus to Acetolactate Synthase (ALS) and Photosystem II (PSII) Inhibiting Herbicides in Preemergence

et al. 2019

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Herbicide resistance in Amaranthus genus occurs frequently around the word and has become a big problem in cotton producing areas. The objective of this work was to evaluate cross-and multiple-resistance of redroot pigweed (A. retroflexus) to herbicides used in preemergence in cotton fields in Brazil. Seven dose-response experiments were conducted with herbicides atrazine, prometryn, diuron, S-metolachlor, trifluralin, trifloxysulfuron-sodium and pyrithiobac-sodium, and the treatments consisted of application rates of 0, ¼, ½, 1, 2 and 4 times the recommended label rate. Eight A. retroflexus byotipes with suspect of resistance were sampled for experiments in three brazilian states of cotton producing. Resistance to prometryn was confirmed for one biotype in Goiás (GO), and one biotype from Mato Grosso (MT) showed cross-resistance to atrazine and prometryn. One byotipe from GO was identified with cross-resistance to trifloxysulfuron-sodium and pyrithiobac-sodium. One of the GO samples was identified with multiple resistance to prometryn and ALS inhibitors, another one to atrazine and ALS inhibitors, while MT byotipe was confirmed with multiple resistance to triazines and pyrithiobac. The herbicides S-metolachlor, diuron, and trifluralin were efficient for control of this species, therefore, they can be used as managment alternative in those regions.Keywords: redroot pigweed, Gossypium hirsutum L., triazines, sulfonylureas. RESUMO -A resistência a herbicidas em espécies do gêneroAmaranthus ocorre frequentemente no mundo e está se tornando um grande problema em regiões algodoeiras no Brasil. O objetivo deste trabalho foi verificar a resistência cruzada e múltipla de biótipos de caruru-gigante (A. retroflexus) aos herbicidas utilizados em pré-emergência na cultura do algodão no Brasil. Sete experimentos de doseresposta foram realizados em casa de vegetação com os herbicidas atrazine, prometryn, diuron, S-metolachlor, trifuralin, trifloxysulfuron-sodium e pyrithiobacsodium, sendo os tratamentos equivalentes a 0, ¼, ½, 1, 2 e 4 vezes a dose recomendada. Foram avaliados oito biótipos de A. retroflexus coletados em três Estados produtores de algodão do Brasil com suspeita de resistência a esses herbicidas. Confirmou-se a resistência em um biótipo de Goiás (GO) para prometryn, assim como um de Mato Grosso (MT), que apresentou resistência cruzada a atrazine e prometryn. Um biótipo do Estado do Mato Grosso do Sul (MS) e quatro de GO apresentaram resistência cruzada a trifloxysulfuron-sodium e pyrithiobac-sodium. Um biótipo de GO foi identificado com resistência múltipla a prometryn e inibidores Planta Daninha 2019; v37:e019179353 FRANCISCHINI, A. et al. Multiple-and cross-resistance of Amaranthus retroflexus to acetolactate synthase (ALS) and ... 2 da ALS, outro para atrazine e inibidores da ALS, enquanto para o bipótipo do MT foi confirmada resistência múltipla para triazinas e pirimiditio-benzoatos (pyrithiobac). Os herbicidas S-metolachlor, diuron e trifuralin foram eficientes no controle de todas as populações e, portan...

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“…The genus Amaranthus contains several species that are main weeds in crops [1], with Amaranthus hybridus L. subsp. hybridus (smooth pigweed) particularly cited as a major weed in summer crops [2].…”

Section: Introductionmentioning

confidence: 99%

First Report of Amaranthus hybridus with Multiple Resistance to 2,4-D, Dicamba, and Glyphosate

et al. 2018

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In many countries, Amaranthus hybridus is a widespread weed in agricultural systems. The high prolificacy and invasive capacity as well as the resistance of some biotypes to herbicides are among the complications of handling this weed. This paper reports on the first A. hybridus biotypes with resistance to auxinic herbicides and multiple resistance to auxinic herbicides and the EPSPs inhibitor, glyphosate. Several dose response assays were carried out to determine and compare sensitivity of six population of A. hybridus to glyphosate, 2,4-D, and dicamba. In addition, shikimic acid accumulation and piperonil butoxide effects on 2,4-D and dicamba metabolism were tested in the same populations. The results showed four populations were resistant to dicamba and three of these were also resistant to 2,4-D, while only one population was resistant to glyphosate. The glyphosate-resistant population also showed multiple resistance to auxinic herbicides. Pretreatment with piperonil butoxide (PBO) followed by 2,4-D or dicamba resulted in the death of all individual weeds independent of herbicide or population.

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MULTIPLE RESISTANCE OF Amaranthus palmeri TO ALS AND EPSPS INHIBITING HERBICIDES IN THE STATE OF MATO GROSSO, BRAZIL

Cited by 21 publications

References 21 publications

The challenge of herbicide resistance around the world: a current summary

The challenge of herbicide resistance around the world: a current summary

Multiple-and Cross-Resistance of Amaranthus retroflexus to Acetolactate Synthase (ALS) and Photosystem II (PSII) Inhibiting Herbicides in Preemergence

First Report of Amaranthus hybridus with Multiple Resistance to 2,4-D, Dicamba, and Glyphosate

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