Behavioral avoidance tests to evaluate effects of cattle slurry and dairy sludge application to soil¹

Revista Brasileira de Ciência do Solo

Mariana Matos-moreira²  Júlia Carina Niemeyer¹  José Paulo Sousa¹  Mário Cunha¹  Emilio Carral² 

[1] ,Universidade de Santiago de CompostelaLugo,Spain

关键词: organic waste management;    ecotoxicity tests;    Eisenia andrei;    Folsomia candida;    manejo de resíduos orgânicos;    ensaios de ecotoxicidade;    Eisenia andrei;    Folsomia candida;   

DOI  :  10.1590/S0100-06832011000400041

来源: SciELO

【 摘 要 】

The application of organic wastes to agricultural soils is not risk-free and can affect soil invertebrates. Ecotoxicological tests based on the behavioral avoidance of earthworms and springtails were performed to evaluate effects of different fertilization strategies on soil quality and habitat function for soil organisms. These tests were performed in soils treated with: i) slurry and chemical fertilizers, according to the conventional fertilization management of the region, ii) conventional fertilization + sludge and iii) unfertilized reference soil. Both fertilization strategies contributed to soil acidity mitigation and caused no increase in soil heavy metal content. Avoidance test results showed no negative effects of these strategies on soil organisms, compared with the reference soil. However, results of the two fertilization managements differed: Springtails did not avoid soils fertilized with dairy sludge in any of the tested combinations. Earthworms avoided soils treated with sludge as of May 2004 (DS1), when compared with conventional fertilization. Possibly, the behavioral avoidance of earthworms is more sensitive to soil properties (other than texture, organic matter and heavy metal content) than springtails

【 授权许可】

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