Glyphosate Effectiveness in the Control of Macrophytes Under a Greenhouse Condition

Cruz, Claudinei da; Silva, A.F.; Luna, Lourdes; Yamauchi, Alfredo Kohiti Feres; Garlich, Nathália; Pitelli, Robinson Antônio

doi:10.1590/0100-83582015000200009

Cited by 12 publications

(11 citation statements)

References 8 publications

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“…Doses dos herbicidas testadas nos experimentos de controle de U. subquadripara. A melhor eficácia (1440 g ha -1 ) foi similar ao ocorrido em condições semelhantes de estudo com 100% de controle desta mesma planta com a aplicação de 2880 g ha -1 de glyphosate, na formulação Rodeo  + 0,5% de adjuvante Aterbane BR  na calda (Cruz et al, 2015b).…”

Section: Resultsunclassified

“…No experimento 1 (Tabela 2) a dose de 240 g ha -1 glyphosate isolado apresentou o máximo de 95% de controle entre 21 e 60 DAA com as plantas com os caules com coloração verdes e algumas folhas ainda presentes similar ao 42 e 84 g ha -1 de saflufenacil + glyphosate (240 e 480 g ha -1 ), com o máximo de 90% de controle aos 60 DAA (Tabela 3). Estas doses de saflufenacil acrescidas de 720 g ha -1 promoveram 100% de controle da U. subquadripara (Tabela 3), sendo mais efetivas do que o glyphosate na formulação Rodeo  com controle desta mesma planta com 2880 g i.a ha -1 (Cruz et al, 2015b) e do glyphosate 3360 e 4320 g ha -1 para a U. subquadripara e U. mutica (Carbonari et al, 2003), enquanto que, para Brachiaria decumbens a mistura de 1080 g i.a de glyphosate + 24,5 g ha -1 de saflufenacil apresentou 99,3% de controle em 14 DAA (Queiroz et al, 2014).…”

Section: Resultsunclassified

“…No experimento 3, todas as doses de imazapyr apresentou controle satisfatório entre 80 e 85% em apenas 60 DAA, eficácia inferior e com diferença significativa em relação as misturas (Tabela 4). A eficácia deste herbicida isolado difere do mesmo para E crassipes e P stratiotes com 95 a 100% de controle, com a utilização de 932 e 1065,2 g ha -1 (Cruz et al, 2015b) e glyphosate com eficácia de 100% no controle e U. subquadripara com a dose 1597,8 g ha -1 em 60 DAA (Cruz et al, 2015a).…”

Section: Resultsunclassified

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Eficácia de herbicidas isolados ou em mistura no controle da planta exótica invasora Urochloa subquadripara

et al. 2018

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Eficácia de herbicidas isolados ou em mistura no controle da planta exótica invasora Urochloa subquadriparaEffectiveness of herbicides isolated or in mixture in control of the exotic plant invasive Urochloa subquadripara Resumo -O objetivo deste estudo foi avaliar a eficácia dos herbicidas glyphosate, saflufenacil, imazamox, imazapyr e penoxsulam, isolados e em mistura, no controle de Urochloa subquadripara. Para tanto, em casa de vegetação, cinco ponteiros das plantas foram transplantados em caixas de 2,5 litros contento 5 cm de solo, areia grossa lavada e composto orgânico (na proporção 1:1:1). Após 30 dias, foi realizada a aplicação dos herbicidas com pulverizador costal à pressão constante de 25 psi mantida por CO 2 , com consumo de calda equivalentes a 200 L ha -1 . As avaliações foram efetuadas por meio de notas de eficácia aos 3, 7, 15, 21, 30, 45 e 60 dias após a aplicação (DAA). Os herbicidas glyphosate e imazamox, isolados, apresentaram excelente controle (100%) de U. subquadripara, enquanto que, o imazapyr e o penoxsulam (48 g ha -1 ) apresentaram controle satisfatório com 80 a 85% de eficácia de controle. Os herbicidas glyphosate, imazamox e imazapyr (isolados e em mistura), o saflufenacil + glyphosate (mistura) e o penoxsulam + glyphosate (mistura) podem ser empregados em programas de manejo desta planta aquática invasora. Palavras-chave: braquiária d'água, controle químico, modelo biológico, plantas aquáticasAbstract -The objective of this study was to evaluate the efficacy of glyphosate, saflufenacil, imazamox, imazapyr and penoxsulam alone or in combination in the control of Urochloa subquadripara.To do so, in greenhouse, five plant pointers were transplanted into 2.5 liter boxes containing 5.0 cm of soil, washed coarse sand and organic compound (1:1:1; ratio). After 30 days, the herbicides with costal sprayer were applied at a constant pressure of 25 p.s.i. maintained by CO 2 , with consumption of syrup equivalent to 200 L ha -1 . The evaluations were performed through efficacy notes at 3, 7, 15, 21, 30, 45 and 60 days after application (DAA). The herbicides glyphosate and imazamox, isolated, showed excellent control (100%) of U. subquadripara, whereas imazapyr and penoxsulam (48.0 g ha -1 ) presented satisfactory control with 80 to 85% control efficacy. The herbicides glyphosate, imazamox and imazapyr (isolated and mixed), saflufenacil + glyphosate (mixture) and penoxsulam + glyphosate (mixture) can be used in management programs of this invasive aquatic plant.

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Section: Resultsunclassified

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Eficácia de herbicidas isolados ou em mistura no controle da planta exótica invasora Urochloa subquadripara

et al. 2018

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“…The effectiveness of some herbicides -such as imazapyr (Sellers et al, 2008); triclopyr and 2,4-D in mesocosm condition (Wersal et al, 2010); fluridone (Cheshier et al, 2011); endothal in mesocosm condition (Poovey et al, 2013); penoxsulam (Christopher, 2013); imazamox (Christopher, 2013); diquat (Christopher, 2013) and glyphosate (Sellers et al, 2008;Cruz et al, 2015) -has been demonstrated in many studies.…”

Section: Introductionmentioning

confidence: 99%

“…Its action mechanism is given by the inhibition of the EPSPs enzyme (5 enolpyruvylshikimate-3-phosphate synthase), which catalyzes the reactions of aromatic amino acid synthesis in plants, fungi and bacteria (Rodrigues and Almeida, 2011;Palaro et al, 2013). The evaluation of this molecule in controlling the macrophytes: Salvinia molesta (Nelson et al, 2001;Fairchild et al, 2002), Urochloa mutica (Chaudhari et al, 2012), Alternanthera phyloxeroides, Eichhornia crassipes, Pistia stratiotes, Ludwigia grandiflora, Myriophyllum aquaticum e S. molesta (Emerine et al, 2010), E. crassipes (Campos et al, 2013) e E. crassipes, P. stratiotes, S. molesta, S. herzogii and U. subquadripara (Cruz et al, 2015) has been described by various authors in controlled condition.…”

Section: Introductionmentioning

confidence: 99%

Floating Macrophyte Control with Glyphosate According to Adjuvants and Spray Nozzles

et al. 2018

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The goals of this study were to evaluate the application of glyphosate plus three adjuvants and three spray nozzles in controlling the macrophyte Pistia stratiotes. For this purpose, after an 80 to 90% colonization, the application of 1.5, 3.5 and 7.0 L h-1 of isolated glyphosate and with the adjuvants Aterbane® BR, Veget’oil® and Dash® HC (0.5% vv-1) and the spray nozzles (AI 110.02, TTI 110.015 and TT 110.015) was performed, plus a control sample (water). Applications were performed with a pressurized backpack precision sprayer, at the constant pressure of 50 p.s.i. and with mixture consumption of 200 L ha-1. At the dose of 1.5 L ha-1, there was 100% control for the combination glyphosate + Veget’oil + tip AI 110.02 (Gly+V.oil+AI, Gly+Aterb.+TTI and Gly+Dash+TT) 15 days after application (DAA). At 3.5 L ha-1, the greatest control (95%) was with Gly+AI, Gly+Aterb.+TTI, Gly+V.oil+TTI, Gly+Dash+TTI, Gly+Aterb.+TT and Gly+Dash+TT; and at 7.0 L ha-1 100% was observed for Gly+AI, Gly+Aterb.+AI, Gly+V.oil+AI, Gly+Aterb.+TTI, Gly+V.oil+TTI, Gly+Dash+TTI, Gly+TT and Gly+Dash+TT. Thus, it is possible to conclude that at 1.5 L ha-1, the combination of glyphosate plus Dash® and with the nozzle TT 110.015 (Gly+Dash+TT) was the most promising one; at 3.5 L ha-1, it was Gly+Aterb.+TTI and at 7.0 L ha-1 the air induction nozzles (AI 110.02 and TTI 110.015), whether with isolated glyphosate or with any of the three adjuvants, were the best at providing control.

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Phosphate alleviation of glyphosate-induced toxicity in Hydrocharis dubia (Bl.) Backer

Zhong

Liu

et al. 2018

Aquatic Toxicology

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Glyphosate Effectiveness in the Control of Macrophytes Under a Greenhouse Condition

Cited by 12 publications

References 8 publications

Eficácia de herbicidas isolados ou em mistura no controle da planta exótica invasora Urochloa subquadripara

Eficácia de herbicidas isolados ou em mistura no controle da planta exótica invasora Urochloa subquadripara

Floating Macrophyte Control with Glyphosate According to Adjuvants and Spray Nozzles

Phosphate alleviation of glyphosate-induced toxicity in Hydrocharis dubia (Bl.) Backer

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