Controle de Commelina benghalensis, C. erecta e Tripogandra diuretica na cultura do café

Oliveira, A. R. de; Freitas, Suely Pereira; Vieira, Henrique Duarte

doi:10.1590/s0100-83582009000400021

Cited by 30 publications

(25 citation statements)

References 16 publications

(13 reference statements)

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“…RW GSA treatment, which constitutes the commercial product Roundup WG ® , which formulation is in ammonium salt, was what caused most poisoning plants, not significantly differing from the CRUCIP treatment which is Crucial ® and its formulation is based on potassium salt and isopropylamine salt (Table 2). In this case, greater control of benghal dayflower species was made with application of glyphosate formulation in ammonium salt, other authors also obtained similar results in similar conditions compared to other formulations in benghal dayflower weed (Oliveira et al, 2009), beggartick (Bidens pilosa) (Werlang et al, 2005) and southern cutgrass (Leersia hexandra e Luziola peruviana) (Scherner et al, 2014).…”

Section: Resultssupporting

confidence: 64%

“…These products are composed by the formulations of ammonium salt glyphosate from the RW GSA treatment and of the mixture of potassium salt formulations and isopropylamine salt from the CRUCIP treatment. Among the treatments all formulations of glyphosate can be found, and it is emphasized that the CRUCIP mixture equaled RW GSA potassium formulation, known as the best weed control (Oliveira et al, 2009). …”

Section: Dias -------------------%--------------------mentioning

confidence: 99%

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Controle de trapoeraba com diferentes formulações de glyphosate

Carvalho¹,

José²,

Lopes³

et al. 2015

RBHerbicidas

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-Benghal dayflower (Commelina benghalensis L.) is a weed plant that easily infests agricultural areas due to its aggressive characteristics associated with reproductive aspects of the species. One important aspect of this plant is presenting its tolerance to the glyphosate. An experiment in greenhouse was conducted to verify the effects of different formulations and commercial products of glyphosate in controlling benghal dayflower. The experimental design was completely randomized, with four replications. The plants were grown in pots filled with eight liters of substrate each, consisting of soil, sand and tanned cattle manure until they have reached the stage of development of the second growth sector, when the following products and their commercial formulations were applied: Roundup Original ® -isopropylamine salt; Trop ® -isopropylamine salt; Roundup WG ® -ammonium salt; Zapp QI ® -potassium salt; Roundup Transorb R ® = potassium salt and Crucial ® -isopropylamine salt + potassium salt. The intoxication of benghal dayflower plants was visually assessed at 7, 14 and 21 days after application of the products, and leaf area, dry matter of leaves, dry matter of the stem, dry matter of root and total dry matter at 21 days after application. The treatments show significant differences in the toxicity of the plants after 14 days of application, and at 21 days it was found that the products Roundup WG ® and Crucial ® were more toxic to plants. The products Roundup WG ® and Crucial ® were highlighted with greater reductions in dry matter of the leaves, stem and total plant. In general, the benghal dayflower has not been effectively controlled by the products at the doses tested and/or by the application after the emission of the second branch of weed. Among the commercial formulations or products, the ammonium salt is highlighted -Roundup WG ® and the mixture of isopropylamine salt with potassium salt -Crucial ® presents higher efficiency in weed control. Keywords: Commelina benghalensis; isopropylamine salt; potassium salt; ammonium salt Resumo -A trapoeraba (Commelina benghalensis L.) é uma planta daninha que infesta facilmente áreas agrícolas devido à suas características de agressividade associadas aos aspectos reprodutivos da espécie. Um dos aspectos importantes desta planta apresentar é sua tolerância ao herbicida glyphosate. Um experimento em ambiente protegido foi realizado para verificar os efeitos de diferentes formulações e produtos comerciais do herbicida glyphosate no controle da trapoeraba. O delineamento experimental utilizado foi o inteiramente casualizado, com quatro 1 Received for publication on 21/10/2015 and approved on 11/01/2016.

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Section: Resultssupporting

confidence: 64%

Section: Dias -------------------%--------------------mentioning

confidence: 99%

Controle de trapoeraba com diferentes formulações de glyphosate

Carvalho¹,

José²,

Lopes³

et al. 2015

RBHerbicidas

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“…O clomazone, mesmo que tenha diminuído os índices de controle do azevém após os 07 DAT, ainda apresentou controle superior a 85% até os 21 DAT. Ressalta-se que 80% é o controle mínimo que determinado herbicida deve apresentar para ser recomendado para o controle de plantas daninhas em culturas (Oliveira et al, 2009), desse modo o clomazone poderia ser indicado para o controle do azevém infestante da cevada, principalmente nos casos onde essa planta daninha é resistente aos herbicidas inibidores de ALS, ACCase e EPSPs. Convém destacar que a brusca queda de controle do azevém pelo clomazone, saindo dos 91% aos 21 DAT para 0% aos 28 DAT deve-se principalmente ao novo fluxo de emergência da planta daninha em meio a cultura da cevada, já que essa planta daninha apresenta fluxos de emergência escalonado.…”

Section: Resultsunclassified

Eficácia e fitotoxicidade de herbicidas aplicados para o manejo de plantas daninhas em cevada

et al. 2014

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Resumo -O azevém é uma das principais plantas daninhas que infesta a cultura da cevada, ocasionando elevadas perdas de produtividade e da qualidade dos grãos dessa cultura. Diante disso, objetivou-se com o trabalho, identificar possíveis alternativas para o manejo químico de azevém infestante da cevada, bem como verificar a fitotoxicidade de herbicidas sobre os componentes de rendimento da cultura. Para tanto foi instalado um experimento, a campo, em blocos casualizados, arranjados em esquema fatorial 2 x 12, com quatro repetições. O fator A foi constituído pelos genótipos de cevada (MN610 e Crioula) e o B pelos herbicidas (iodosulfuron; imazethapyr + imazapic; clomazone; propanil; oxyfluorfen; metsulfuron-methyl; 2,4-D; cyhalofop-p-butil; penoxsulam e pyroxsulam), mais duas testemunhas uma capinada e outra sem capina. O genótipo MN610 apresentou elevada sensibilidade ao clomazone e ao imazethapyr + imazapic, tendo seus componentes de rendimento de grãos afetados negativamente na presença desses produtos. Já o genótipo Crioula, apresentou-se mais tolerante ao iodosulfuron, propanil, pyroxsulam, imazethapyr + imazapic, clomazone e oxyfluorfen, com menor redução nos componentes do rendimento da cevada. Os herbicidas aplicados podem, dependendo do genótipo, reduzir os componentes de rendimento da cultura, o que consequentemente afetará a produtividade de grãos da cevada. O iodosulfuron apresentou a melhor resposta para o controle de azevém, mantendo a cevada livre de planta daninha, aliado a uma menor fitotoxicidade a cultura. Palavras-chaves: Hordeum vulgare, Lolium multiflorum, manejo químicoAbstract -Ryegrass is the main weed that infests barley, causing high yield losses and quality of grain. Thus, this work intended to evaluate the selectivity and efficacy of herbicides for weed control in barley. For such, we carried out an experiment in the field with randomized block design in factorial scheme 2 x 12, with four replications. Factor A is composed by the barley genotypes MN610 and Criola and factor B by herbicides: iodosulfuron imazethapyr + imazapic; clomazone; propanil; oxyfluorfen; metsulfuron-methyl; 2,4-D; cyhalofop; penoxsulam; were allocated pyroxsulam, weeded and infested. MN610 genotype showed high sensitivity to clomazone and imazethapyr + imazapic, with its yield components reduced in the presence of these products. Criola genotype presented itself with more tolerance to iodosulfuron, propanil, pyroxsulam, 1 Recebido para publicação em 30/07/2014 e aceito em 31/05/2015. 2 Professor da Universidade Federal da Fronteira Sul (UFFS), Câmpus Erechim. Erechim, RS, BR.

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“…From those, it is emphasized that imazethapyr + imazapic, imazapic + imazapyr, as well as clomazone, presented high rates of phytotoxicity to wheat (Table 2), for the Quartzo and Pioneiro cultivars, while oxyfluorfen, iodosulfuron, cyalofop-p-buthyl and pyroxsulam presented a satisfactory control of ryegrass and good wheat selectivity. It is worth highlighting that, to be considered an efficient herbicide, it needs to present control of a certain weed above 80% (Oliveira et al, 2009). Therefore, all herbicides mentioned above presented a control index above 80%, especially starting from the 14 DAT.…”

Section: Resultsmentioning

confidence: 99%

Eficácia e fitotoxicidade de herbicidas aplicados para manejo de plantas daninhas infestantes do trigo

Galon

Castoldi

Forte³

et al. 2015

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-The objective of this paper was to identify alternatives for the chemical handling of weeds that infect wheat, as well as verifying the phytotoxicity of herbicides on the crop. The experiment was carried out in randomized blocks, organized in a factorial design of 2x 13, with four repetitions. The wheat crops were allocated to factor A (Quartzo and Pioneiro) and the herbicides to factor B (iodosulfuron -0,100 kg ha -1 ; imazapic + imazapyr -0,140 kg ha -1 ; clomazone 0,800 L ha -1 ; imazethapyr + imazapic -1,250 L ha -1 ; propanil -6,000 kg ha, plus two controls, one weeded and another one infested. Iodosulfuron, propanil, oxyfluorfen, metsulfuron-methyl, 2,4-D, cyhalofop-p-buthyl, penoxsulam and pyroxsulam cause values inferior to 5.5% of phytotoxicity to wheat crops and, in general, they did not differ from the weeded and infested controls. The greatest phytotoxic effects were caused by imazethapyr + imazapic, clomazone and imazapic + imazapyr on the wheat crops. The application of iodosulfuron, imazethapyr + imazapic, imazapic + imazapyr and pyroxsulam presented elevated control percentage of ryegrass, with rates above 95.5%. Imazethapyr + imazapic, clomazone and imazapic + imazapyr presented the greatest phytotoxicity on the wheat crops. Iodosulfuron, imazethapyr + imazapic, clomazone and imazapic + imazapyr and pyroxsulam showed the best controls for ryegrass. Iodosulfuron presented lower influence on the components of wheat grains yield when compared to the other herbicides. Keywords: chemical control; Lolium multiflorum; Triticum aestivumResumo -Objetivou-se com o trabalho identificar alternativas para o manejo químico de plantas daninhas infestante do trigo, bem como verificar a fitotoxicidade de herbicidas sobre a cultura. Instalou-se o experimento em blocos casualizados, arranjado em esquema fatorial 2 x 13, com quatro repetições. No fator A, alocou-se as cultivares de trigo (Quartzo e Pioneiro) e no B os herbicidas (iodosulfuron -0,100 kg ha -1 ; imazapic + imazapyr -0,140 kg ha -1 ; clomazone 0,800 L ha -1 ; imazethapyr + imazapic -1,250 L ha -1 ; propanil -6,000 kg ha -1 ; oxyfluorfen -1,000 L ha

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Controle de Commelina benghalensis, C. erecta e Tripogandra diuretica na cultura do café

Cited by 30 publications

References 16 publications

Controle de trapoeraba com diferentes formulações de glyphosate

Controle de trapoeraba com diferentes formulações de glyphosate

Eficácia e fitotoxicidade de herbicidas aplicados para o manejo de plantas daninhas em cevada

Eficácia e fitotoxicidade de herbicidas aplicados para manejo de plantas daninhas infestantes do trigo

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