Production of potato common scab-antagonistic biofertilizer from swine feces with Streptomyces albidoflavus.

Abiofertilizer, showingantagonistic activity against potato common scab in pot tests, was produced from swine feces with a newly isolated strain, CH-33, identified as Streptomyces albidoflavus.This strain characteristically grew on fresh swine feces at 20~35°C without sterilization or any additives, and produced an antibiotic substance against Streptomyces scabies, the common scab-pathogen, during composting.The addition of the biofertilizer at from 0.1 g to 1.6g total nitrogen (N) per 600g humic volcanic ash soil in a pot did not inhibit the growth of Brassica rapa var.perviridis but increased it, even at the highest nitrogen content tested.Commonscab was completely inhibited when the biofertilizer was added at 0.1 g to 1.6g as nitrogen (N) per 4kg of scab-infected soil in a pot.Thus a biofertilizer suppressing plant pathogenic microorganisms was developed.The renewable process of the microbial treatment of a large amount of domestic animal feces, before use as manure, was studied,