Irrigação por sulcos com efluentes urbanos brutos.

Abstract

Untreated urban efluents exhibiting high total and fecal coliform concentrations were used to irrigate lettuce by furrows, under four regimes of water application. At the end of the experiment, some lettuce plants were analysed to identify the existence of microorganisms that could restrict their fresh consumption. The results did not reveal coliform contamination, but lettuce plants obtained at the local market did reveal high coliform concentration.