Efficiency of Isolated and Associated Herbicides to Control Glyphosate-Resistant Sourgrass

Cassol, Marcelo; Mattiuzzi,; Albrecht, Alfredo Júnior Paiola; Albrecht, Leandro Paiola; Baccin, Luísa Carolina; Souza, Cristian Natalino Zanfrilli de

doi:10.1590/s0100-83582019370100060

Cited by 11 publications

(8 citation statements)

References 15 publications

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“…In the case of sourgrass, efficient control at an advanced stage of development becomes more difficult, especially due to the formation of starchrich rhizomes, which hinders the translocation of herbicides by the plant, as well as allows intense shoot regrowth, even after treated with the herbicide (MACHADO et al, 2006;MACHADO et al, 2008). Melo et al (2012), Barroso et al (2010) and Cassol et al (2019) found similar results, with control over 90% after glyphosate + clethodim application in sourgrass plants of 3 to 5 tillers. Thus, the active ingredient quizalofop-P-ethyl at the correct dose becomes an important tool controlling younger sourgrass plants as the control is similar or superior to applications involving more than one product as in case of the above studies.…”

Section: Resultsmentioning

confidence: 78%

QUIZALOFOP-P-ETHYL CONTROLLING SOURGRASS (Digitaria insularis) AND GOOSEGRASS (Eleusine indica) IN INFESTED COFFEE AREAS

Vilela

Medeiros²,

Gonçalves³

et al. 2019

C.Sci.

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Chemical control is the main weed management system in coffee crop. Herbicides alternatives controlling grass weeds in infested coffee areas are limited, mainly due to the few options of registered herbicides. Thus, it is important to evaluate selective post-emergence herbicide to control these important weeds in coffee crop. The objective of this work was to evaluate the selectivity, efficiency and agronomic viability of the herbicide IHH 0513 (Quizalofope-P-ethyl 50g ai L-1) compared to Glyphosate on grass control in coffee crop. Two experiments were carried out in randomized blocks with four replications in the municipality of Lavras and Santana da Vargem (MG - Brazil) in a commercial coffee crop cultivar “Mundo Novo” and “Catuai” to evaluate the herbicide effectiveness in the crop rows. The experimental design was a randomized block design with seven treatments and four replications. Treatments consisted of IHH 0513 doses (Quizalofope-P-ethyl 25, 50, 75 and 100 g ai ha-1) compared to the standard GLI OVER (Glyphosate 480 g ia L-1) at the dose of 1680g ai ha-1 + Iharol at 0.5% v/v. Application occurred when sourgrass and goosegrass were at the beginning of development with up to 4 tillers (early vegetative stage) and in a second trial, at advanced stages of development (highly branched and /or flowering). Control assessments in percentage were performed at 7, 14, 21 and 28 days after application (DAA) of the treatments. A note of phytotoxicity was given by the EWRC scale (1964). The control of weeds was evaluated in each experimental plot using the visual notes scale of FRANS et al. (1986), where: 0% represents no control, and 100% total control of the species in question, compared to the population present in the non-weed control. In general, the dose of 1500 and 2000 mL per hectare of IHH 0513 (75 and 100 g ai ha-1) for the weeds at early vegetative stage presented the highest levels of controls (above 90%). The dose of 2000 mL per hectare (100 g ai ha-1) was efficient at 28 DAA to control more developed plants. No symptoms of phytotoxicity caused by the IHH 0513 product were detected at any dose tested. Quizalofop-P-ehtyl can be recommended for integrated weed management in coffee for sourgrass and goosegrass.

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Section: Resultsmentioning

confidence: 78%

QUIZALOFOP-P-ETHYL CONTROLLING SOURGRASS (Digitaria insularis) AND GOOSEGRASS (Eleusine indica) IN INFESTED COFFEE AREAS

Vilela

Medeiros²,

Gonçalves³

et al. 2019

C.Sci.

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“…ha -1 ) promove incrementos no controle de plantas daninhas em campo respeitando a concentração de até 10 g L -1 (CARVALHO et al, 2008). Cassol et al (2019) Os tratamentos herbicidas apresentaram diferenças significativas na porcentagem de controle de D. insularis L. (Tabela 1, Figura 1). Aos 7 DAA dos herbicidas, as parcelas que foram tratadas com o glifosato mostraram maior porcentagem de controle (62,66%) em relação ao tratamento controle.…”

Section: Resultsunclassified

EFEITO DE ADJUVANTE ASSOCIADO A HERBICIDAS NO CONTROLE DE Digitaria insularis L.

Caixeta¹,

Júnior²,

Brigante³

et al. 2020

RBHerbicidas

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A aplicação de herbicidas com adjuvantes pode melhorar a eficiência de controlede plantas daninhas como a Digitaria insularis L., que ocasiona prejuízos emdiversas culturas agrícolas devido a sua alta competitividade e dificuldade decontrole. Assim, este estudo teve como objetivo avaliar o sinergismo do adjuvanteSinerMax® associado aos herbicidas cletodim, glifosato e haloxifop-P-metílico nocontrole do capim-amargoso (Digitaria insularis L). O experimento foi conduzidoentre setembro e outubro de 2018. O delineamento experimental utilizado foi o emblocos casualizados em esquema fatorial 3x2+1 com 5 repetições, sendo ostratamentos com cletodim 240 g L-1 de i.a. (0,45 l ha-1), glifosato 480 g L-1 de i.a.(4 L ha-1) e haloxifop-P-metílico 124,7 g L-1 de i.a. (0,5 L ha-1) associados ou nãoao adjuvante SinerMax® (0,5 L ha-1) e o tratamento controle sem uso de herbicida,sendo avaliado a ausência de dano aparente, a morte completa da planta e matériaseca das plantas. Os dados obtidos foram submetidos a análise de variância e asmédias comparadas pelo teste de Scott-Knott à 5% probabilidade. Os herbicidashaloxifop-P-metílico e glifosato apresentam os melhores níveis de controle deDigitaria insularis L., com maior fitotoxidade (entre 60 e 90%) e menor acúmulode matéria seca em relação ao tratamento controle. O adjuvante (SinerMax®)associado aos herbicidas glifosato, haloxifop-P-metílico e cletodim não resultouem maior eficiência de controle de D. insularis L.

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“…Moreover, glyphosate presented a greater capacity to mitigate the antagonistic effect than malathion. The association of glyphosate with graminicide improves control over Digitaria insularis (BARROSO et al, 2014;CASSOL et al, 2019). The formulated mixture of clethodim + quizalofop-p-ethyl suffered less interference from synthetic auxins in ryegrass control than clethodim and quizalofop-p-ethyl.…”

Section: What Is the Mechanism That Generates Antagonism And How To Mitigate It?mentioning

confidence: 99%

Interaction of acetyl-CoA carboxylase enzyme inhibiting herbicides with auxin herbicides on ryegrass

et al. 2021

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This study aimed to evaluate the antagonistic effect of the mixture ofacetyl coenzyme-A carboxylase (ACCase) enzyme inhibiting herbicides and auxin herbicides in Lolium multiflorum and to determine mechanisms to mitigate this possible effect. The first experiments were conducted by associating the herbicide clethodim (108 g a.i. ha−1), quizalofop-p-ethyl (54 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (108+54 g a.i. ha−1) with 2,4-D (1005 g a.e. ha−1) or triclopyr (720 g a.e. ha−1), in addition to the sole application of the respective graminicides. Another experiment included clethodim (54; 81; 108; 162; 216 g a.i. ha−1), quizalofop-p-ethyl (27; 40.5; 54; 81; 108 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (54+27; 81+40.5; 108+54; 162+81; 216+108 g a.i. ha−1) mixed with 2,4-D (1005 g a.e. ha−1), or triclopyr (720 g a.e. ha−1), in addition to the control treatments without herbicide application. In the second experiment, herbicides clethodim (108 g a.i. ha−1), quizalofop-p-ethyl (54 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (108+54 g a.i. ha−1) in combination with the herbicides 2,4-D (1005 g a.e. ha−1) or triclopyr (720 g a.e. ha−1)had malathion (1000 g a.i. ha−1) or glyphosate (720 g a.e. ha−1) mixed, in addition to the sole applications of the graminicides. The herbicide clethodim + quizalofop-p-ethyl did not present an antagonistic interaction with the auxin herbicides, and obtained 85% weed control. To obtain control similar to the sole application of this graminicide, the dose of the herbicide clethodim needs to be increased by 20%. However, the mixture of the herbicide quizalofop-p-ethyl with 2,4-D and triclopyr affects the ryegrass control. The use of strategies that increase the absorption of ACCase herbicides or the inhibition of P450 enzymes are ways to mitigate the antagonistic effect caused by the association of the two auxin herbicides.

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Efficiency of Isolated and Associated Herbicides to Control Glyphosate-Resistant Sourgrass

Cited by 11 publications

References 15 publications

QUIZALOFOP-P-ETHYL CONTROLLING SOURGRASS (Digitaria insularis) AND GOOSEGRASS (Eleusine indica) IN INFESTED COFFEE AREAS

QUIZALOFOP-P-ETHYL CONTROLLING SOURGRASS (Digitaria insularis) AND GOOSEGRASS (Eleusine indica) IN INFESTED COFFEE AREAS

EFEITO DE ADJUVANTE ASSOCIADO A HERBICIDAS NO CONTROLE DE Digitaria insularis L.

Interaction of acetyl-CoA carboxylase enzyme inhibiting herbicides with auxin herbicides on ryegrass

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