Abstract

SILVA-LEAL, Jorge Antonio; BEDOYA, Diego Fernando  and  TORRES-LOZADA, Patricia. Evaluation of potential application disinfected of biosolids on radish cultive. Acta Agron. [online]. 2013, vol.62, n.2, pp.155-164. ISSN 0120-2812.

We evaluated the potential for use in the cultivation on radish of three types of biosolids: dehydrated- BD, thermally dried (60 ° C for 12.58 hours)-BST and alkalinized (quicklime 9% dry weight)-BA in doses of 1, 2, 4 and 8 times the nitrogen requirement of the crop. We measure the number of leaves, biomass and weight of the radish and the content of faecal coliforms, E. coli and helminth eggs in the radish at the moment of harvest. The results showed that application of biosolids improves the weight of the radish from 17 to 150% in relation to the control, however, the statistical analysis showed no significant difference between treatments. Although the application of biosolids did not show a concentration of fecal coliforms and E. coli in radish for the three biosolids; the dehydrated biosolid application increase the content of viable helminth eggs in radish, presenting an elevated risk of use on these crops, being necessary to implement sanitation practices of biosolids before to the agricultural application.

Keywords : Agricultural application; alkaline treatment; biosolids; radish; thermal drying.

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