Efeitos citogenéticos, bioquímicos, morfológicos e anatômicos da aplicação de lodo de esgoto higienizado em Carica papaya L.
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Data
2014-02-14
Autores
Bonomo, Marina Marques
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Universidade Federal do Espírito Santo
Resumo
The agricultural application of sewage sludge application is a growing practice in many countries due to its several soil and plant benefits, representing a practical and beneficial final disposition of this residue. Sewage sludge application contributes in the nutrient biochemical cycle, serving as an organic matter and nutrient input to the soil and the crop, stimulating plant growth, mainly in species with high nutritional requirement. However, monitoring the effects of the residue utilization is a crucial tool, considering the presence of contaminant and its toxic potential to organisms. The aim of this study was to evaluate the biological response to the application of sewage sludge through its integration with chemical analysis, in order to elucidate the benefits and potential risks of this residue utilization. In this context, morphological, anatomic, physiological and biochemical analysis were performed in Carica papaya, in addition to citogenetic analysis through Allium cepatest. Nutritional levels observed in chemical analysis corroborate the sewage sludge potential of utilization as crop fertilizer, as well as the low contaminant levels make this residue within the limits required by legislation. Moreover, the cytogenetic effects observed in A. cepaand the biochemical analysis in C. papayacomplement the results observed in C. papayagrowth evaluation to endorse that the residue dosage to be applied must supply the plant nutritional requirement without induce damages and several metabolic demands
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mamão , Allium cepa , Stress oxidativo