Associação de herbicidas para o controle de plantas daninhas em feijão do tipo preto

Galon, Leandro; Winter, Fábio Luís; Forte, César Tiago; Agazzi, Luciane Renata; Basso, Felipe José Menin; Holz, Cinthia Maethê; Perin, Gismael Francisco

doi:10.7824/rbh.v16i4.559

Cited by 5 publications

(6 citation statements)

References 18 publications

(27 reference statements)

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“…The use of imazethapyr caused low control of D. ciliaris, due to the morphological characteristics of the species (López-Ovejero et al 2013). Galon et al (2017), assessing the efficiency of flumioxazin to the control of D. ciliaris found low control (30%) at the 7 DAA, do not being efficient in the posterior evaluations. The efficiency of these two active principles is proven used to the control of weeds of broad leaves (flumioxazin) and narrow (imazethapyr) in pre-emergency and its high residual period (Oliveira et al 2001;Grichar et al 2009), this way the results obtained in the evaluation of the 28 DAA in the present study proves the efficiency to the monocotyledons weeds.…”

Section: Resultsmentioning

confidence: 95%

Weed management in soybean using burndown herbicides associated to pre-emergent herbicides

Santin¹,

Peruzzo²,

Galon³

et al. 2019

Commun. Plant Sci.

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The soybean crop has been playing a very important role in the agribusiness worldwide, including in Brazil. Among the pests that cause major problems to the crop are the weeds, because they are responsible by the reduction of the productivity and of the grain quality. On the face of it, this work aimed to evaluate the application of burndown herbicides associated to pre-emerging herbicides to the management of the soybean weeds. The experiment was carried out in the field, in area with no soil cover with fallow during the winter, in the randomized block design, with four replicates. The treatments used were: diuron + sulfentrazone (490 + 245), [glyphosate + (diuron + sulfentrazone)-1,440 + (420 + 210)], [glyphosate + (diuron + sulfentrazone)-1,440 + (490 + 245)], glyphosate + 2,4-D (1,440 + 806), glyphosate + diclosulam (1,440 + 25.2), [glyphosate + (imazethapyr + flumioxazin)-1,440 + (100 + 50)], glyphosate + saflufenacil (1,440 + 35), [ammonium-glufosinate + (diuron + sulfentrazone)-400 + 490 + 245 g ha-1 de i.a], and two herbicide-free controls, weedy and weed-free. At the 7, 14, 21 and 28 days after the emergency of the crop (DAE) the variables were evaluated, herbicide phytotoxicity on soybean and the weeds control, Digitaria ciliaris and Urochloa plantaginea. In the soybean harvest, the number of pods per plant was determined, the number of grains per pods, the mass of a thousand grains (g) and the grain productivity (kg ha-1). The phytotoxicity caused by herbicides to the soybean it was not over to 8% in all the evaluations realized. The control of the weeds, D. ciliaris and U. plantaginea were over to 90%, highlighting the effect of the pre-emerging herbicides in the maintaining of the control until the evaluation of the 28 DAE. In general, all the treatments involving the herbicides did not cause changes in the components of soybean crop yield, being statistically equal the weed-free control higher than the weedy control. The soybean presented an increase of 859.48% in grain yield when Digitaria ciliaris and of the Urochloa plantaginea was controlled. Highlighted Conclusions 1. The control of Digitaria ciliaris and Urochloa plantaginea is more efficient with the use of pre-emerging herbicides, mainly diuron + sulfentrazone and imazethapyr + flumioxazin. 2. The toxicity of herbicides to the soybean 'NA 5909' is low, with no visual intoxication symptoms from 28 days after emergency, and do not reduce the crop grain yield. 3. Digitaria ciliaris and Urochloa plantaginea can reduce by up to 88% the soybean grain yield if not controlled. 4. The soybean grain productivity can be increased by 859% when Digitaria ciliaris and Urochloa plantaginea are controlled.

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Section: Resultsmentioning

confidence: 95%

Weed management in soybean using burndown herbicides associated to pre-emergent herbicides

Santin¹,

Peruzzo²,

Galon³

et al. 2019

Commun. Plant Sci.

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“…Likewise, sulfentrazone has a low coefficient of sorption (Koc = 43 mL g -1 ) and solubility (110 mg L -1 ), indicating less adsorption in soil colloids at low precipitation levels (Rodrigues & Almeida, 2005). Galon et al (2017) pointed out that the efficiency of herbicides can be directly associated with environmental factors such as rainfall and temperature as well as soilrelated factors such as clay content and type, organic matter, pH, and others, which are factors that influence the Koc of herbicides.…”

Section: Results and Discussion 1 St Experimentsmentioning

confidence: 99%

Chemical management of weeds in cassava crop, cultivar ‘Santa Helena’

et al. 2021

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The objective of this study was to evaluate the selectivity of cassava cultivar 'Santa Helena' and the efficiency of weed control using herbicides applied alone or tank mixed with and without sequential applications. Two experiments were carried out, both in a randomized block design with four replications. The treatments for the 1 st experiment were: Hand hoeing (weed-free control); No hand hoeing (non-weeded control); sulfentrazone (500 g ha -1 ); sulfentrazone/ [clomazone + clethodim] (500/[1125 + 120] g ha -1 ); sulfentrazone/mesotrione (500/240 g ha -1 ); S-metolachlor (1920 g ha - 1); S-metolachlor/[clomazone + clethodim] (1920/[1125 + 120] g ha -1 ); S-metolachlor/mesotrione](1920/240 g ha -1 ); [sulfentrazone + S-metolachlor]/[clomazone + clethodim] ([500 + 1920]/[1125 + 120] g ha -1 ); [sulfentrazone + S-metolachlor]/ mesotrione ([500 + 1920]/240 g ha -1 ). The treatments of the 2 nd experiment were: Hand hoeing (weed-free control); No hand hoeing (non-weeded control); glyphosate (360 g ha -1 ) + hand hoeing; glyphosate + sulfentrazone (360 + 500 g ha - 1); glyphosate + flumioxazin (360 + 50 g ha -1 ); glyphosate + clomazone (360 + 1125 g ha -1 ); glyphosate + S-metolachlor (360 + 1920 g ha -1 ); glyphosate + sulfentrazone + clomazone (360 + 400 + 900 g ha -1 ); glyphosate + sulfentrazone + Smetolachlor (360 + 400 + 1440 g ha -1 ); glyphosate + flumioxazin + clomazone (360 + 40 + 900 g ha -1 ); glyphosate + flumioxazin + S-metolachlor (360 + 40 + 1440 g ha -1 ). In the first experiment, only the treatments S-metolachlor, Smetolachlor/[clomazone + clethodim] and S-metolachlor/mesotrione did not present efficient weed control, causing reduction in yields; the other treatments were crop selective and efficient. In the second experiment, all treatments showed excellent levels of weed control up to 65 DAA and were crop selective. It is concluded that applications of tank mixtures, sequential mixtures and the use of glyphosate mixed with pre-emergent herbicides constitute excellent alternatives of weed management strategies in 'Santa Helena' cassava.

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“…Houve recuperação das plantas através da retomada do crescimento pelo feijão-mungo após 28 dias da aplicação, com exceção da altura, porém pode-se atribuir a estabilização da altura à ocasião do florescimento, conforme demostra as medições aos 21 e 28 DAA. Em estudo realizado por Galon et al (2017), fomesafen, bentazon e imazamox causaram uma leve fitotoxidade na cultura do feijoeiro comum até os 14 dias após a aplicação, com recuperação total da planta após 21 dias. Linhares et al (2014) concluíram que o herbicida fomesafen causou severa intoxicação no feijão-caupi, retardando o crescimento vegetativo, afetando diretamente a produtividade, enquanto que a mistura bentazon + imazamox não afetou as crescimento e produtividade.…”

Section: Resultsunclassified

“…Vale ressaltar que existe diferenças de seletividade entre as diferentes espécies e cultivares de feijão, segundo Galon et al (2017), devido a características genéticas distintas que podem aumentar ou diminuir a seletividade das culturas a diferentes herbicidas.…”

Section: Resultsunclassified

Seletividade de herbicidas em pós-emergência na cultura do feijão mungo-verde

Silva

Viçosi

Oliveira

et al. 2019

Agraria

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RESUMO: O objetivo deste trabalho foi avaliar a seletividade de diferentes herbicidas em duas épocas de aplicação na cultura do feijão-mungo. O estudo foi conduzido na Universidade Estadual de Goiás, Câmpus Ipameri. Os tratamentos foram dispostos em delineamento inteiramente casualizado, com seis tratamentos (com capina, sem capina, Fomesafen -250 g i.a ha -1 , Bentazon -600 g i.a ha -1 , Imazamox -42 g i.a ha -1 e Dicloreto de paraquat -400 g i.a ha -1 ), duas épocas de aplicação dos herbicidas (15 e 30 dias após a emergência), com quatro repetições, avaliados aos 7, 15, 21 e 28 dias após a aplicação. As características avaliadas foram altura, número de trifólios, diâmetro de plantas e massa seca da parte aérea. A aplicação do dicloreto de paraquat causou morte das plantas de feijão-mungo quando aplicado em plantas de 15 e 30 dias de emergência. O bentazon, imazamox e fomesafen reduziram o crescimento inicial quando aplicado aos 15 DAE, com posterior recuperação da cultura. O feijão-mungo possui tolerância aos herbicidas à base de bentazon, imazamox e fomesafen, quando aplicados aos 15 e 30 dias após emergência. O dicloreto de paraquat não é recomendado para uso em pós-emergência na cultura. Palavras-chave: controle químico; plantas daninhas; Vigna radiataSelectivity of post-emergence herbicides in mung-green bean cultures ABSTRACT: The purpose of this work was to evaluate the selectivity of different herbicides in two seasons of application in the mung bean crop. The study was conducted at the State University of Goiás, Câmpus Ipameri. The treatments were arranged in a completely randomized design with six treatments (with weeding, without weeding, Fomesafen -250 g i.a ha -1 , Bentazon -600 g i.a ha -1 , Imazamox -42 g i.a ha -1 and Paraquat dichloride -400 g i.a ha -1 ), two herbicide application times (15 and 30 days after emergence), with four replicates, evaluated at 7, 15, 21 and 28 days after application. The evaluated characteristics were height, number of tripholes, diameter of plants and dry weight of shoots. The application of the paraquat dichloride caused death of the mung bean plants when applied in plants of 15 and 30 days of emergence. Bentazon, Imazamox and Fomesafen reduced initial growth when applied to 15 DAE, with subsequent recovery of the culture. Mung beans are tolerant to herbicides based on Bentazon, Imazamox and Fomesafen when applied at 15 and 30 days after emergence. Paraquat dichloride is not recommended for post-emergence use in the culture.Seletividade de herbicidas em pós-emergência na cultura do feijão mungo-verde Rev. Bras.

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Associação de herbicidas para o controle de plantas daninhas em feijão do tipo preto

Cited by 5 publications

References 18 publications

Weed management in soybean using burndown herbicides associated to pre-emergent herbicides

Weed management in soybean using burndown herbicides associated to pre-emergent herbicides

Chemical management of weeds in cassava crop, cultivar ‘Santa Helena’

Seletividade de herbicidas em pós-emergência na cultura do feijão mungo-verde

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