Protecting effect of recycled urban wastes (sewage sludge and wastewater) on ryegrass against the toxicity of pesticides at high concentrations

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:142

Article

Pena, Aranzazu^1,5  Dolores Mingorance, Ma^1,5  Guzman, Nacio^2,4  Sanchez, Lourdes³  Fernandez-Espinosa, Antonio J.^4,5  Valdes, Benito^2,5  Rossini-Oliva, Sabina^2,5 

[1] CSIC, UGR, Inst Andaluz Ciencias Tierra, Granada 18100, Spain

[2] Univ Seville, Dept Plant Biol & Ecol, E-41012 Seville, Spain

[3] CSIC, Estn Expt Zaidin, E-18008 Granada, Spain

[4] Univ Seville, Dept Analyt Chem, E-41012 Seville, Spain

[5] CSIC USE Invest Integral Med Fis & Biot, Unidad Asociada, Madrid, Spain

关键词: Ryegrass;    Organic amendment;    Water quality;    Biomass production;    Mine soil;   

DOI  :  10.1016/j.jenvman.2014.04.002

来源: Elsevier

【 摘 要 】

Degraded landscapes, like those from abandoned mine areas, could be restored by revegetating them with appropriate plant species, after correction for acidity and improvement by adding exogenous organic material. Application of urban wastes to large areas of derelict land helps in the sustainable development of this landscape. However, the development of plant species in these soils could require in the future the management of possible pests or diseases by pesticide applications which could also affect plant yield. Therefore, ryegrass (Lolium perenne L) was planted in a limed soil from the mining area of Riotinto (SW Spain), using an indoor pot experiment and the effects of amendment with sewage sludge, as well as irrigation with urban wastewater on plant uptake of the insecticide thiacloprid and the fungicide fenarimol were examined. Ryegrass biomass was reduced up to 3-fold by pesticide application. Fenarimol residues were the highest in soil, while those of thiacloprid were lower in soil and higher in ryegrass. Addition of sewage sludge and irrigation with wastewater led to a reduction of pesticide translocation to the aerial plant parts, representing a lower hazard to ryegrass quality grown in this mine soil. (C) 2014 Elsevier Ltd. All rights reserved.

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