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Behavior of oxyfluorfen in soils amended with different sources of organic matter. Effects on soil biology. | LitMetric

Behavior of oxyfluorfen in soils amended with different sources of organic matter. Effects on soil biology.

J Hazard Mater

Grupo de investigación "Edafología ambiental", Departamento de Cristalografía, Mineralogía y Química Agrícola, E.T.S.I.A. Universidad de Sevilla, Crta de Utrera km. 1, 41013 Sevilla, Spain. Electronic address:

Published: May 2014

AI Article Synopsis

  • - The study examined how oxyfluorfen, a herbicide, affects soil biological properties when combined with four types of organic amendments, including biostimulants from rice bran and other organic waste sources.
  • - Results showed that biostimulants RB1 and RB2 improved enzymatic activities and microbial diversity in the soil, with RB2 being more effective than RB1, especially peaking at day 10 of incubation.
  • - The presence of oxyfluorfen in soils amended with organic matter led to less inhibition of enzymatic activities and biodiversity, potentially due to the easy assimilation of nutrients by soil microbes from the biostimulants.

Article Abstract

We performed a laboratory study on the effect of oxyfluorfen at a rate of 4lha(-1) on biological properties of a soil amended with four organic wastes (two biostimulants/biofertilizers, obtained from rice bran, RB1 and RB2; municipal solid waste, MSW; and sheep manure, SM). Soil was mixed with SM at a rate of 1%, MSW at a rate of 0.52%, RB1 at a rate of 0.39% and RB2 at a rate of 0.30%, in order to apply the same amount of organic matter to the soil. The enzymatic activities and microbial community in the soil were determined during the incubation times. The application of RB1 and RB2 to soil without oxyfluorfen increased the enzymatic activities and biodiversity, peaking at day 10 of the incubation period. This stimulation was higher in the soil amended with RB2 than in that amended with RB1. In SM and CF-amended soils, the stimulation of enzymatic activities and soil biodiversity increased during the experiment. The application of herbicide in organic-amended soils decreased the inhibition of soil enzymatic activities and soil biodiversity. Possibly the low molecular weight protein content easily assimilated by soil microorganisms and the higher fat content in the biostimulants/biofertilizers are responsible for the lower inhibition of these soil biological properties.

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Source
http://dx.doi.org/10.1016/j.jhazmat.2014.03.051DOI Listing

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