Farmers in a remote part of India have been queuing for hours to get their hands on an unusual brew. The liquid in question consists of microorganisms from three sources: lactic acid, yeast and photosynthesising bacteria. High concentrations of these microbes are present in most organic, natural fertilisers, such as cow dung; however, the brewing process specifically mixes them to create a probiotic liquid. Used on soil and plants, it promotes healthy growth while keeping damaging pathogens at bay.

Professor Teruo Higa, a horticulturalist from the University of the Ryukyus, Okinawa, originated ...


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