Resumo

MORELL PLANES, Fernando  e  HERNANDEZ JIMENEZ, Alberto. Degradation of properties agrobiological of red grounds ferralíticos leached by the anthropic influence and its answer agroproductiva to the improvement. Agronomía Trop. [online]. 2008, vol.58, n.4, pp.33-343. ISSN 0002-192X.

A physical and biological characterization was carried out on three soil profiles characteristics of Lixiviated Red Ferralitic soils (Rhodi Eutrhic Nitisols) which had been under different tillage and managements practices (permanent ficus groves, fruits plantations older than 30­year-old, and intensived cultivated soils for more than 30 years). In each soil, there were evaluated some physical (color, soil structure, soil organic mater content, dispertion soil factor, and soil bulk density), and biological determinations (total microbiota, number of endemic AMF spores, mycelial number, endophytic weight, visual density, infection percentage, and glomalin content). A close relationship between the soil degradation level with soil structure and edaphic biodiversity was observed; the highest values were recorded on the most preserved soils, but them progressively decreased with decreases in the soil degradation, as a result of an anthropic influence.

Palavras-chave : Acrisols; soil biology; environmentalimpact; soil management.