Microbial degradation of sulfentrazone in a Brazilian rhodic hapludox soil

Martínez, Camila Ortiz; Silva, Célia Maria M. S.; Fay, E. F.; Abakerli, R. B.; Maia, Aline H. N.; Durrant, Lúcia Regina

doi:10.1590/s1517-83822010000100030

Cited by 28 publications

(19 citation statements)

References 16 publications

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“…This is an important information and justifies the common use of sulfentrazone in sugarcane crop, where pre-emergence herbicide should remain in the soil upper layer for a long time, even in dry winter. Martinez et al (2010) have found t 1/2 of 91.6 days for sulfentrazone, in soil incubated at 40 ºC with 70 % of field capacity. They reported that higher incubation temperatures (30-40 ºC) accelerate molecule degradation, but no effect of soil moisture was found.…”

Section: Resultsmentioning

confidence: 88%

Bioindicator demonstrates high persistence of sulfentrazone in dry soil1

Lourenço

Carvalho

2015

Pesqui. Agropecu. Trop.

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In sugarcane crop areas, the application of preemergence herbicides with long residual effect in the soil has been frequently necessary. The herbicide persistence in the soil must be high especially because of applications during the dry season of the year, after sugarcane harvest. This study aimed at estimating the sulfentrazone persistence and dissipation in dry soil using bioindicator. Five experiments were carried out, divided into two phases. In the first phase, three dose-response curves were adjusted to select the best bioindicator to be adopted in the second phase. Niger was adopted due to its lower sensibility to sulfentrazone. In the second phase, a new dose-response curve was carried out, with six doses of sulfentrazone, in order to standardize the bioindicator sensibility to sulfentrazone. At the end, another experiment with six periods of sulfentrazone persistence in dry clay soil was developed. Persistence periods were: 182, 154, 125, 98 and 30 days. The bioindicator was seeded at the application day in treated plots and control. In this experiment, the sulfentrazone dose applied was 800 g ha-1. Niger was considered a good species to estimate the sulfentrazone persistence in dry soil. The sulfentrazone phytotoxic activity was identified up to 182 days after application, and its average dissipation rate was 2.15 g ha-1 day-1, with half-life higher than 182 days.

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Section: Resultsmentioning

confidence: 88%

Bioindicator demonstrates high persistence of sulfentrazone in dry soil1

Lourenço

Carvalho

2015

Pesqui. Agropecu. Trop.

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“…Sabe-se que os microrganismos podem responder de forma diferenciada a doses de um herbicida, variando, então, o tempo requerido para sua degradação. Martinez (2010) verificou que o herbicida sulfentrazone pode ser degradado por populações de microrganismos do solo; entre estes encontra-se o gênero Penicillium sp. Os fungos do gênero Penicillium sp.…”

Section: Resultsunclassified

Potencial de espécies vegetais na remediação de solo contaminado com sulfentrazone

Belo

Coelho²,

Ferreira

et al. 2011

Planta daninha

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-The aim of this work was to evaluate the efficiency of plant species in the remediation of a red-yellow Hapludalf contaminated with sulfentrazone. The work was conducted at two stages. At the first, the growth of Helianthus annus, Canavalia ensiformis, Dolichos lab lab and Arachis hypogaea was evaluated in soil contaminated with sulfentrazone. At the second stage, a species (sorghum) indicator of residues of this herbicide was sown in the same soil. At the first stage, pots containing 6.0 kg of substrate were used. After the pots were irrigated, the herbicide was applied on the soil surface. One day after the application, the vegetal species were sown. These species were collected 100 days later and stove-dried for determination of shoot dry matter accumulation. At the second stage, soil samples of 3.0 kg were collected from each pot where the species indicator of sulfentrazone residues was cultivated. At 20 and 50 days after emergence, the intoxication of the sorghum plants was visually determined and the shoot dry matter of these plants was determined 50 days after emergence and 50 days after the first cut. The production of shoot dry matter of H. annus, C. ensiformis, D. lab lab and A. hypogaea was not affected, indicating that all species were tolerant to sulfentrazone. However, H. annus showed greater capacity for remediation of soil contaminated with this herbicide.

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“…Microbial degradation of sulfentrazone is higher at elevated temperatures (30 and 40 o C) and in moist soil (30 to 70% of field capacity), where Nocardia brasiliensis and Penicillium sp. microorganisms have been identified as potential degraders of this herbicide (Martinez et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Sulfentrazone efficiency on Ipomoea hederifolia and Ipomoea quamoclit as influenced by rain and sugarcane straw

Correia

Camilo²,

Santos³

2013

Planta daninha

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-The aim of this study was to assess the capacity of sulfentrazone applied in preemergence in controlling Ipomoea hederifolia and Ipomoea quamoclit as a function of the time interval between herbicide application and the occurrence of rain, and the presence of sugarcane straw on the soil surface. Two greenhouse experiments and one field experiment were conducted. For the greenhouse experiments, the study included three doses of sulfentrazone applied by spraying 0, 0.6, and 0.9 kg ha -1 , two amounts of straw on the soil (0 and 10 t ha -1 ), and five time intervals between the application of herbicide and rain simulation (0, 20, 40, 60, and 90 days). In the field experiment, five herbicide treatments (sulfentrazone at 0.6 and 0.9 kg ha -1 , sulfentrazone + hexazinone at 0.6 + 0.25 kg ha -1 , amicarbazone at 1.4 kg ha -1 , and imazapic at 0.147 kg ha -1 ) and two controls with no herbicide were studied. Management conditions with or without sugarcane straw on the soil were also assessed. From the greenhouse experiments, sulfentrazone application at 0.6 kg ha -1 was found to provide for the efficient control of I. hederifolia and I. quamoclit in a dry environment, with up to 90 days between herbicide application and rain simulation. After herbicide application, 20 mm of simulated rain was enough to leach sulfentrazone from the straw to the soil, as the biological effects observed in I. hederifolia and I. quamoclit remained unaffected. Under field conditions, either with or without sugarcane straw left on the soil, sulfentrazone alone (0.6 or 0.9 kg ha -1 ) or sulfentrazone combined with hexazinone (0.6 + 0.25 kg ha -1 ) was effective in the control of I. hederifolia and I. quamoclit, exhibiting similar or better control than amicarbazone (1.4 kg ha -1 ) and imazapic (0.147 kg ha -1 ).Keywords: Boral ® , raw sugarcane, morning glory, herbicide retention, Saccharum officinarum.RESUMO -Objetivou-se neste trabalho avaliar o controle em pré-emergência de Ipomoea hederifolia e Ipomoea quamoclit pelo herbicida sulfentrazone em função do intervalo de tempo entre a aplicação e a ocorrência de chuva e da manutenção ou não de palha de cana-de-açúcar na superfície do solo. Três experimentos foram desenvolvidos: dois em casa de vegetação e um em campo. Nos experimentos em casa de vegetação, foram estudadas três doses de sulfentrazone (0, 0,6 e 0,9 kg ha -1 ) pulverizado em duas quantidades de palha na superfície do solo (0 e 10 t ha -1 ) e cinco intervalos de tempo entre a sua aplicação e a simulação de chuva (0, 20, 40, 60 e 90 dias). No experimento em campo, foram avaliados cinco tratamentos de herbicida (sulfentrazone a 0,6 e 0,9 kg ha -1 ; sulfentrazone + hexazinone a 0,6 + 0,25 kg ha -1 ; amicarbazone a 1,4 kg ha -1 ; e imazapic a 0,147 kg ha -1 ) e duas testemunhas sem aplicação. A manutenção ou não da palha de cana sobre o solo também foi estudada. Em casa de vegetação, a aplicação de 0,6 kg ha -1 de sulfentrazone foi suficiente para o controle adequado de I. hederifolia e I. quamoclit num ambiente seco com até ...

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Microbial degradation of sulfentrazone in a Brazilian rhodic hapludox soil

Cited by 28 publications

References 16 publications

Bioindicator demonstrates high persistence of sulfentrazone in dry soil1

Bioindicator demonstrates high persistence of sulfentrazone in dry soil1

Potencial de espécies vegetais na remediação de solo contaminado com sulfentrazone

Sulfentrazone efficiency on Ipomoea hederifolia and Ipomoea quamoclit as influenced by rain and sugarcane straw

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