ÍNDICES DE FITOTOXICIDAD EN RESIDUOS ORGÁNICOS DURANTE EL COMPOSTAJE

摘要: Key words: Bioassays, germination index, compost.ABSTRACTThe maturity of compost can be determined using sensitive species to phytotoxic metabolites by bioassays. In order obtain a stabilized and non-phytotoxic product, the compounds must biodegraded or immobilized during phase composting. this study sensitivity lettuce (Lactuca sativa, var. Four Seasons) radish (Raphanus sativus, Cherry Bell) seeds extracts from composted agroindustrial residues was evaluated.E The were obtained mixing with distilled water in ratio 1:5. evaluated instantaneous coffee (C), mixture fresh fruit (C+F) wine broiler manure (V+G). relative rates (PGR), growth radicle (CRR) index (IG) for both species. results showed that more than lettuce. V+G highest phytotoxicity according index. Chilean Regulation Compost (INN, 2004) establishes level based on rate seeds. According only classified as “phytotoxics free” compost. most parameter evaluating chemical agricultural use. This especially useful any organic substrate used pots. is due because when plants are grown pots effects important cultivated field.Palabras claves: Bioensayos, indice de germinacion,