Avaliação de herbicidas para dois cultivares de mandioca

Biffe, Denis Fernando; Constantin, Jamil; Oliveira, Rubem Silvério de; Rios, Fabiano Aparecido; Franchini, Luiz Henrique Morais; Gemelli, Alexandre; Arantes, J.G.Z.; Raimondi, Michel Alex; Blainski, Éverton

doi:10.1590/s0100-83582010000400014

Cited by 22 publications

(34 citation statements)

References 12 publications

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“…et al (2001) mention that metolachlor (2,000 g ha -1 ), when applied in preemergent 'Espeto' cassava, caused mild phytotoxicity at the 28 th day after planting and caused reduction of 29.6 and 33.6% in the plants' height and in the production of roots, respectively in relation to the control weeded sample. Biffe et al (2010) mention that S-metolachlor (1,920 g ha -1 ), when applied at the pre-emergent cultivars of 'Fécula Branca' and 'Fibra' cultivars, showed to be selective, and may be used as a control tool of weds in cassava cultures.…”

Section: Phytotoxicity (%)mentioning

confidence: 99%

“…The level of disturbance of the weeds community with the cassava culture may decrease the production of roots and starch from 89.8 to 100% (Peressin, et al, 1998;Alabi et al, 2001;Chikoye et al, 2001;Johanns & Contiero, 2006;Albuquerque et al, 2008;Biffe et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Among these products we can cite S-metolachlor, which showed to be selective and can be included in the weeds management programs (Silva et al, 2009;Biffe et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Selectivity of clomazone and S-metolachlor applied after cassava pruning

et al. 2013

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-The objective of this work was to evaluate the selectivity of clomazone in two formulations and S-metolachlor applied on shoots of different sizes after pruning of 'Baianinha' cassava. The experiment was arranged in a randomized block design in a factorial 5 x 2 (5 treatments x 2 sizes of shoots after pruning -10 and 33 cm) with four replications. The herbicides evaluated were: clomazone (encapsulated suspension -900 g h -1 ), clomazone (encapsulated suspension -1,080 g ha -1 ), clomazone (emulsifiable concentrate 900 g ha -1 ), S-metolachlor (1,920 g ha -1 ) and an untreated control. During the experiment, all plots were kept free of weed interference by hand weeding. It was concluded that both the formulations of clomazone and S-metolachlor were selective when applied on both the shoot sizes evaluated. However, the application of S-metolachlor on 33 cm shoots gave higher selectivity to 'Baianinha' cassava plants. Keywords:Manihot esculenta, microencapsulated, weed, clomazone, S-metolachlor. RESUMO -Objetivou-se neste estudo avaliar a seletividade do clomazone em duas formulações e do S-metolachlor aplicados em diferentes tamanhos de brotos depois da poda da mandioca Baianinha. O delineamento experimental utilizado foi o de blocos ao acaso, em esquema fatorial 5 x 2 (5 tratamentos x 2 tamanhos de brotos após a poda -10 e 33 cm), com quatro repetições. Os herbicidas

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Section: Phytotoxicity (%)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selectivity of clomazone and S-metolachlor applied after cassava pruning

et al. 2013

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“…A atrazine foi mais tóxica a crotalária e os sintomas semelhantes aos observados por Biffe et al (2010), como clorose internervural e das bordas das folhas (escurecimento), que progrediram, da borda para o centro, para a necrose generalizada da folha, levando as plantas tratadas praticamente a morte. Braz et al (2015) constataram que os herbicidas atrazine e flumioxazin aplicados em pré e pós-emergência da cultura, não foram seletivos a crotalária, por proporcionar elevados percentuais de intoxicação.…”

Section: Initial Selectivity Of Herbicides Applied In Post-emergence unclassified

Seletividade inicial de herbicidas aplicados em pós-emergência da crotalária

Dias

Mendes²,

Gonçalves³

et al. 2017

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Resumo -Dentre as práticas que visam conferir sustentabilidade do solo agrícola, o emprego de adubos verdes e/ou plantas de cobertura como a crotalária tem sido preconizado. O manejo de plantas daninhas é uma das práticas para o sucesso da crotalária. Entretanto, as informações sobre a seletividade de herbicidas são escassas, sendo estas de suma importância. Assim, objetivou-se avaliar a seletividade de herbicidas aplicados em pós-emergência da crotalária (Crotalaria spectabilis). Foram realizadas avaliações de fitotoxicidade aos 7, 14, 21 e 28 dias após a aplicação (DAA) e de matéria seca da parte aérea (MSPA) aos 28 DAA. Em ambos os experimentos os herbicidas bentazon, clomazone, diclosulam e ethoxysulfuron causaram baixa fitotoxicidade à cultura e baixa redução na MSPA. Os herbicidas atrazine, mesotrione, oxadiazon e atrazine + flumioxazin + carfentrazone-ethyl proporcionaram altos níveis de intoxicação e alta redução na MSPA. Os herbicidas bentazon, clomazone, diclosulam e ethoxysulfuron foram seletivos para aplicação em pós-emergência da cultura.1 Recebido para publicação em 12/01/2017 e aceito em 22/02/2017.

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“…Optionally, the chemical method of weed control is characterized by allowing intervention in large areas with little labor dependency and quick application (Biffe et al, 2010). However, cassava response to herbicides application may vary from total selectivity for some products until full production jeopardy because of crop poisoning (Silveira et al, 2012;Costa et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Sulfentrazone Selectivity and Efficiency in Cassava Crops in Sandy and Clayey Soils

et al. 2015

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Recebido para publicação em 16.7.2015 ABSTRACT -Weeds have the potential to dramatically interfere in cassava cultivation, reducing its productive potential; however, there are few studies on the selective herbicides in this crop. Therefore, the objective was to evaluate in this work the selectivity and efficiency of sulfentrazone in cassava crops grown in sandy and clayey soils. Two experiments were carried out: The first one was carried out in sandy soil conditions in the conventional system; and the second one was carried out in clayey soil conditions in the no-tillage system. The experimental design was a randomized block with four replications. The treatments consisted in doses of 250, 500, 750 and 1,000 g ha -1 of sulfentrazone, and weeded and non-weeded controls. Sulfentrazone application in cassava crops has linearly reduced the production of roots in a proportion of 0.0153 and 0.0107 t ha -1 at each increment in grams of the active ingredient, respectively. It was concluded that sulfentrazone was not selective for cassava crops grown both in sandy and in clayey soil; however, it was highly effective in weed control in both soils.

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Avaliação de herbicidas para dois cultivares de mandioca

Cited by 22 publications

References 12 publications

Selectivity of clomazone and S-metolachlor applied after cassava pruning

Selectivity of clomazone and S-metolachlor applied after cassava pruning

Seletividade inicial de herbicidas aplicados em pós-emergência da crotalária

Sulfentrazone Selectivity and Efficiency in Cassava Crops in Sandy and Clayey Soils

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