What is in compost tea?
Tea contains all the soluble nutrients extracted from the compost, but also contains all the species of bacteria, fungi, protozoa and nematodes in the compost. Not all the individuals in the compost, but representatives of all the species in the compost are found in the compost tea. Making sure only beneficial species are present in the compost is therefore critical. Outdated methods of assessing numbers of organisms in samples might lead you to believe compost tea doesn’t have much diversity. But, consider that species diversity in soil is much, much greater than plate count data would lead people to believe. Plate counts miss 99.99% of the bacterial and fungal species in soil. You need to use molecular methods to understand true species diversity in compost. Plate count assessments of diversity in compost and tea, and soil should not be used. They are misleading about the true diversity, or even as an indicator of diversity in soil, compost or compost tea. Good, aerobic compost conta
