Efecto de residuos compostados de industria láctea utilizados como sustrato en plántulas de pimiento

CARLOS MARTÍN; LOVATO MARÍA; FIASCONARO, MARÍA LAURA; M. C. ANTOLÍN

HORTICULTURA BRASILEIRA

ASSOC BRASILEIRA HORTICULTURA

Lugar: San Pablo; Año: 2017 vol. 36 p. 50 - 61

0102-0536

The aim of this study was to analyze the impact of different doses of compost obtained from fats waste of dairy industry mixed with a commercial peat-based substrate (CS) in the development of pepper seedlings. The effect of these mixtures on germination was also determined. Fat compost (FC) was obtained by the aerobic composting of sewage mixed with industry prunings (wood chips and grass). In order to check the maturity of compost, and thus, that it can be applied as a substrate, an aqueous extract thereof was prepared and phytotoxicity in seed germination and root development was analyzed. The result indicated 99.7% relative seed germination and 74.10% of germination rate. Different culture media were prepared by mixing 0, 10, 20 and 40% of FC with CS. The results showed that the application of FC on CS respectively produced increased dry matter (DM) of plants. Seedlings germinated and developed in FC 40 reached 250 mg plant-1 DM. The application of FC at germination and seedling growth showed a marked improvement in terms of development in general, DM plant, height / diameter stem, leaf area and the concentration of total chlorophylls.