Preparation, Characterization, and Testing of Compost Tea Derived from Seaweed and Fish Residues
2024; Multidisciplinary Digital Publishing Institute; Volume: 14; Issue: 9 Linguagem: Inglês
10.3390/agronomy14091919
ISSN2073-4395
AutoresAndrei Moț, Oana Cristina Pârvulescu, Violeta Alexandra Ion, Ailin Moloșag, Aurora Dobrin, L. Bădulescu, Cristina Orbeci, Diana Egri, Tănase Dobre, Anne-Kristin Løes, Joshua F. Cabell, Athanasios Salifoglou, Sevasti Matsia, Carlos O. Letelier-Gordo, Cristian Eugen Răducanu, Alexandra Mocanu,
Tópico(s)Allelopathy and phytotoxic interactions
ResumoNon-aerated compost tea (CT) was prepared from compost derived from rockweed (Ascophyllum nodosum) and fish (cod, common ling, haddock, saithe) residues that fermented in water. Electrical conductivity, pH, concentrations of dry matter, ash, C, macronutrients (N, P, K, Ca, and Mg), and micronutrients (Cu, Fe, Mn, Mo, and Zn) of CT prepared under different fermentation conditions were measured. The effects of process factors, i.e., water/compost mass ratio (4.2–9.8 g/g) and fermentation time (4.2–9.8 days = 100–236 h), on the physicochemical properties of CT were quantified using quadratic polynomial models. CT obtained at optimal levels of process factors (4.2 g/g and 5.6 days = 134 h) was tested for lettuce seed germination and seedling growth. Diluted CT (25% CT + 75% ultrapure water) improved seedling growth while achieving a high germination percentage (97%).
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