O herbicida sulfentrazone interfere na biomassa microbiana e na atividade da microbiota do solo

Madalão, João Carlos; Silva, Antônio Alberto da; Orlando, Wilson de Almeida; Saraiva, D.T.; Melo, Christiane Augusta Diniz; D'Antonino, L.

doi:10.4322/rca.2016

Cited by 3 publications

(2 citation statements)

References 24 publications

(26 reference statements)

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“…A negative impact of sulfentrazone on respiration rates was observed from 45 to 90 DAA (Figure 4). Similar results were obtained by Vivian et al (2006) and Madalão et al (2016), who also observed a negative impact of this herbicide on respiration rates.…”

Section: Resultssupporting

confidence: 89%

“…Results in the literature show that the sulfentrazone effect on MBC and qCO 2 may have contrasting results. Some studies found a negative impact of this herbicide on MBC or qCO 2 (Silva et al 2014, Madalão et al 2016, according to the soil type; while Tironi et al (2009) did not find any effect of this herbicide on MBC. Many factors may affect the herbicide behavior on the soil, with the soil attributes being one of the most important.…”

Section: Resultsmentioning

confidence: 95%

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Residual activity of sulfentrazone and its impacts on microbial activity and biomass of Brazilian Savanna soils

Damin

Carrijo

Costa

2021

Pesqui. Agropecu. Trop.

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Soil attributes may affect the residual activity and impacts of herbicides on non-target organisms. This study aimed to evaluate the residual activity of the sulfentrazone herbicide and its impacts on microbiological parameters of Brazilian Savanna soils, as well as to identify soil attributes that can be used to predict the residual activity of the herbicide in these soils. The experimental design was completely randomized, in a 6 x 5 factorial scheme, with 4 replications, being 5 soil types (Rhodic Acrustox; Typic Quartzpsamment; Rhodic Haplustox; Typic Humaquepts; Fluventic Dystrustepts) and 6 periods (0, 15, 30, 45, 60 and 90 days after herbicide application - DAA). The residual activity of the sulfentrazone herbicide is dependent of the soil type, and the time that the herbicide can control at least 80 % of Urochloa decumbens plants ranges from 0 (Typic Humaquepts) to 38 days (Rhodic Haplustox). The bases saturation is the only soil attribute correlated with the herbicide efficacy over time, in the Brazilian Savanna soils, showing a moderate correlation up to 90 DAA. The pH, organic matter and clay content are not correlated with the herbicide efficacy over time in these soils. Sulfentrazone reduces the microorganisms activity from 45 to 90 DAA in all the studied soils. However, it does not affect the microbial biomass carbon.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 95%