Research on compost tea technology

Research on compost tea technology began in 1980’s, but field trials comparing the brewing methods are scarce. The majority of studies to date have focused on plant disease and suppressive ability of compost tea. There is evidence that some plant diseases have been partially suppressed by application of compost tea (Scheuerell 2002, and Brinton 2005), while in other studies, suppression has been highly variable between different batches batch preparations (Hoitink 2003, Scheuerell 2005, Scheuerell 2006). Potential problems such as pathogen or chemical contamination of crops by application of compost tea have also been documented in recent scientific studies (Ingram 2007, Brändli 2006).