Atividade residual de herbicidas pré-emergentes aplicados na cultura da soja sobre o milheto cultivado em sucessão

Dan, Hugo Almeida; Dan, L.G.M.; Barroso, Alberto Leão de Lemos; Procópio, S.O.; Oliveira, Rubem Silvério de; Assis, Renato Lara de; Silva, Alessandro Guerra da; Feldkircher, C.

doi:10.1590/s0100-83582011000200022

Cited by 30 publications

(38 citation statements)

References 18 publications

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“…Contudo, após o término do PTPI, que muitas vezes coincide com o fechamento do dossel do cultivo agrícola, a presença do herbicida no solo pode se tornar indesejável, podendo resultar em efeito residual (Belo et al, 2007;Dan et al, 2011), contaminação de mananciais de água subterrânea pela lixiviação e, ou, escoamento superficial (Barra et al, 1999, Palma et al, 2004Krutz et al, 2005), toxicidade a organismos não alvos (Rousseaux et al, 2003), podendo, até, dependendo da recalcitrância do composto, acumular-se na cadeia alimentar (Edwards, 1973). O sulfentrazone, (N -[2,4-dicloro-5-[4-(difluorometil)-4,5-dihidro-3 metil -5-oxo-1H -1,2,4-triazol -1-il] metanosulfonamida), do grupo químico aril triazolinonas, é um herbicida desenvolvido para aplicação preferencialmente em pré-emergência, controlando várias espécies de plantas daninhas infestantes, mono e dicotiledôneas, das culturas da cana-de-açúcar e soja, além do seu uso em pátios industriais (Rodrigues & Almeida, 1998).…”

Section: Introductionunclassified

Susceptibilidade de espécies de plantas com potencial de fitorremediação do herbicida sulfentrazone

et al. 2013

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Selection of plants tolerant to sulfentrazone and potential for phytoremediationAmong the new technologies, phytoremediation is considered as an option for the decontamination of areas that thave undergone intense herbicide applications. This work aimed to select species with potential to the phytoremediation of soils contaminated with the herbicide sulfentrazone. The tested species were Calopogonium mucunoides, hybrid Sorghum (Sorghum bicolor x Sorghum sudanense), Crotalaria breviflora, Crotalaria juncea, Canavalia ensiformis, Dolichos lablab, Stizolobium deeringianum e Stizolobium aterrimum. The experiment was conducted in a greenhouse, using 6 dm 3 vases filled with soil samples collected at a depth of 20 cm. The experimental design was the randomized blocks in a factorial scheme of 8 x 5, with four repetitions, which were composed by the eight plant species, and five doses of sulfentrazone (0, 200, 400, 800 and 1,600g ha -1 ). We evaluated the phytotoxicity of the herbicide, plant height and dry weight of shoots and roots. The species showing the least symptoms of phytotoxicity and the highest rates of height and fresh and dry biomass were C. juncea, C. ensiformis and D. lablab, which were selected as tolerant to the herbicide sulfentrazone and with potential for phytoremediation.

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Section: Introductionunclassified

Susceptibilidade de espécies de plantas com potencial de fitorremediação do herbicida sulfentrazone

et al. 2013

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“…A similar behavior occurred for the soybean crop, where the application of flumioxazin at the dose of 25 g ha -1 did not change the height of plants, the accumulation of dry matter of the aerial part, the number of grains per pod and the grain productivity per plant (Correia et al, 2008). In the pearl millet crop, the application of 50 g ha -1 of flumioxazin was not able to change the height of plants or the grain yield of the crop (Dan et al, 2011 (Grichar et al, 2013).…”

Section: Resultsmentioning

confidence: 57%

Seletividade do flumioxazin ao trigo

et al. 2017

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-The chemical control of weeds is an important management to keep high productivity in the wheat crop. Due to the scarceness of registered products for the crop, the goal of this work was to evaluate the selectivity of the flumioxazin herbicide to wheat, applied in post-emergence. The experiment was conducted on the field and the used experimental design was the randomized block one, with four replications. The treatments were applied on stage V3 of the wheat crop and consisted in six flumioxazin doses: 0, 10, 20, 30, 40, 50 g ha -1 . Evaluations were performed on SPAD index, intoxication and weed control on day 15, 21, 28 and 35 after application. At the end of the experiment, 109 days after seeding, plants were tracked to determine the one thousand grain weight, hectoliter weight and grain productivity. The obtained results showed that in spite of causing an up to 20% SPAD index and up to 34% intoxication reduction in the highest applied dose, flumioxazin provided selectivity to the wheat crop, since it did not interfere in the other evaluated variables, mainly in grain productivity. Keywords: doses; herbicide; productivity; Triticum aestivum Resumo -O controle químico de plantas daninhas é um importante manejo para se manter a alta produtividade na cultura do trigo. Devido à escassez de produtos registrados para a cultura, objetivou-se avaliar a seletividade do herbicida flumioxazin ao trigo, aplicado em pós-emergência. O experimento foi realizado a campo e o delineamento experimental utilizado foi de blocos ao acaso, com quatro repetições. Os tratamentos foram aplicados no estádio V3 da cultura do trigo e consistiram de seis doses de flumioxazin: 0, 10, 20, 30, 40, 50 g ha -1 . Foram realizadas avaliações de índice SPAD, de intoxicação e de controle de plantas daninhas aos 15, 21, 28 e 35 dias após a aplicação. Ao final do experimento, 109 dias após a semeadura, as plantas foram trilhadas para determinação do peso de mil grãos, peso hectolitro e produtividade de grãos. Os resultados obtidos mostraram que apesar de causar redução do índice SPAD de até 20% e intoxicação de até 34% na maior dose aplicada, o flumioxazin proporcionou seletividade à cultura do trigo por não interferir nas demais variáveis avaliadas, principalmente na produtividade de grãos.

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“…The use of these herbicides with prolonged action in the soil represents a reduction in the cost of chemical control of weeds, especially in crops with long periods of total interference prevention (PTIP), such as cane sugar. On the other hand, the occurrence of phytotoxicity to sensitive crops (carryover) seeded after using herbicides has been observed in some situations (DAN et al, 2011). The residual effect of these herbicides on soil varies from a few months to more than three years (BOVEY; MEYER; HEIN JUNIOR, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…Among the herbicides which have a high potential for contamination of soils, sulfentrazone (N-[2,4-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl] methanesulphonamide) stands out, as it has a long residual effect on soil (VIVIAN et al, 2006;MELO et al, 2010;MONQUERO et al, 2010), and can cause damage to subsequent susceptible crops, such as millet, black oats, and sorghum (PEREIRA; ALVARENGA; OTUBO, 2000;DAN et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the presence of sulfentrazone becomes undesirable, due to the potential for contaminating underground water sources by leaching and/ or superficial water sources by runoff (BARRA et al, 1999;PALMA et al, 2004;KRUTZ et al, 2005), the impossibility of cultivating susceptible species in succession (BELO et al, 2007;DAN et al, 2011), and the toxicity to non-target organisms (ROUSSEAUX et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Selection of species tolerant to the herbicide sulfentrazone with potential for phytoremediation of contaminated soils

et al. 2012

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This paper aimed to select species with potential for phytoremediation of soils contaminated with the herbicide sulfentrazone. Eight species were evaluated: Arachis pintoi, Eleusine coracana, Crotalaria spectabilis, Crotalaria ochroleuca, Cajanus cajan, Leucaena leucocephala, Stizolobium cinereum, and Raphanus sativus. The experiment was set-up inside a greenhouse, using pots with a capacity of 6dm 3 filled with soil samples collected at a depth of 0-20cm. The experimental design was arranged into randomised blocks in a factorial scheme (8 × 5) with four replications, which consisted of the combination between the species and five doses of sulfentrazone (0, 200, 400, 800, and 1,600g ha -1 ). The herbicide phytotoxicity, plant heights, and dry masses of shoots and roots were evaluated. The species Cajanus cajan and Leucaena leucocephala had a higher tolerance to sulfentrazone up to a dose of 400g ha -1 , showing minor symptoms of phytotoxicity and smaller decreases in plant heights and in dry matter accumulation, both in the shoots and roots, when compared to the control treatment, indicating, thus, the potential to be used for further studies on phytoremediation of sulfentrazone in soil.

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Atividade residual de herbicidas pré-emergentes aplicados na cultura da soja sobre o milheto cultivado em sucessão

Cited by 30 publications

References 18 publications

Susceptibilidade de espécies de plantas com potencial de fitorremediação do herbicida sulfentrazone

Susceptibilidade de espécies de plantas com potencial de fitorremediação do herbicida sulfentrazone

Seletividade do flumioxazin ao trigo

Selection of species tolerant to the herbicide sulfentrazone with potential for phytoremediation of contaminated soils

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