MICROORGANISM HAVING PROPERTY OF PREVENTING REPLANT FAILURE AND MICROBIAL MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a new actinomyces K-31 strain, belonging to the genus Streptomyces, having functions to suppress the raising of pathogenic fungi for crops in soil and capable of providing a microbial material capable of preventing replant failure by culturing vermiculite and wheat bran therewith and applying the cultured product to soil. ;SOLUTION: This microorganism is a new actinomyces K-31 strain (FERM P-15204), having functions to suppress the raising of pathogenic fungi for crops in soil and belonging to the genus Streptomyces. The microorganism is capable of producing a microbial material capable of preventing replant failure by culturing together with a carrier such as vermiculite and a culture medium such as wheat bran and application thereof to soil. The microorganism is obtained by embedding chitin as a separation source in a plowland soil, etc., then directly culturing the resultant plowland soil, etc., after the passage of 2 months or mixing chitin therewith, culturing the resultant mixture under conditions for preferentially increasing the microorganism capable of decomposing the chitin, adding the cultured product to sterile water, shaking the mixture for 30min, diluting the shaken mixture, smearing a chitin agar plate culture medium with a part thereof, carrying out the culturing at 28°C in the dark for 1 week and collecting the microorganism of a colony capable of decomposing the chitin.;COPYRIGHT: (C)1997,JPO