Composição química do material orgânico proveniente de águas receptoras de esgotos acumulado no interior de mangueiras gotejadoras.

Abstract

This study was carried out to observe the deposition of organic matter inside dripped rubbers of two drip irrigation systems: superficial and sub-superficial. During two consecutive cultivations of the American lettuce (Lactuca sativa L.) using the irrigation systems proposed here, the cumulated organic matter was sampled and analyzed in the laboratory. It was evaluated the chemical compounds, ph, and electrical conductivity of organic matter deposited inside dripped rubbers. Further, and it was proposed a new method for sampling this organic matter. Results indicated that nitrogen is the element that presents the highest concentrations in samples, and its highest accumulations occurred in treatments containing dripped rubbers disposed superficially over the soil.