ABSTRACT
Acetic acid and butyric acid were produced by the anaerobic fermentation of soil mixed with wheat or rice bran. The concentration of acetic acid produced in the wheat and rice bran-treated soil was 31.2 mM and 8 mM, respectively, whereas the concentration of butyric acid in the wheat and rice bran-treated soil was 25.0 mM and 8 mM, respectively. The minimal fungicidal concentration (MFC) for all the fungal strains was 40-60 mM acetic acid, 20-40 mM butyric acid, and 40-60 mM mixture of acetic acid: butyric acid (1:1, v/v). Consequently, the efficacy of mixing wheat-bran with soil to control soil diseases was demonstrated.
Subject(s)
Acetic Acid/metabolism , Antifungal Agents/pharmacology , Butyric Acid/metabolism , Fermentation , Soil Microbiology , Acetic Acid/pharmacology , Anaerobiosis , Butyric Acid/pharmacology , Dietary Fiber , Microbial Sensitivity TestsABSTRACT
The effect of food waste (FW) composted with MS (Miraculous Soil Microorganisms) was compared with commercial compost (CC) and mineral fertilizer (MF) on bacterial and fungal populations, soil enzyme activities and growth of lettuce in a greenhouse. Populations of fungi and bacteria, soil biomass, and soil enzyme activities in the rhizosphere of FW treatments significantly increased compared to control (CON), CC and MF treatments at 2, 4, and 6 weeks. The fresh weight of lettuce in FW treatments was about 2-3 times higher than that in CC at 4 and 6 week. The pH, EC, total nitrogen content, organic matter and sodium concentration in FW treatments were generally higher than those in CON, CC and MF treatments.