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Microbial control of plant diseases with Streptomyces spp. 1
Author(s) -
TAHVONEN R. T.
Publication year - 1988
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1988.tb00347.x
Subject(s) - rhizoctonia solani , streptomyces , damping off , biology , pythium , wettable powder , rhizoctonia , fusarium , spore , peat , substrate (aquarium) , alternaria brassicicola , horticulture , botany , rhizosphere , agronomy , biological pest control , bacteria , pesticide , ecology , biochemistry , genetics , arabidopsis , mutant , gene
Light‐coloured Sphagnum fuscum peat is the substrate most widely used in glasshouses in Finland. A number of Streptomyces strains which are strongly antagonistic against a number of soil and seed‐borne fungal pathogens, both in vitro and in vivo , have been isolated from light‐coloured peat. Seed dusting with Streptomyces prevented or reduced damping‐off and foot‐rot disease caused by Alternaria brassicicola and Rhizoctonia solani on crucifers. Seed treatment slightly increased yields of cereals in fields experiments. Spraying the substrate with a suspension of Streptomyces reduced root diseases on cucumbers caused by Pythium , and in many cases successfully prevented fusarium wilt of carnations. A dry powder preparation has been made from the Streptomyces isolates, and applied at a dose of 5‐10 g kg ‐1 in seed dusting, and 0.1‐10 g 100 m ‐2 when spraying the substrate. The microbe was most effective in peat soil, although good results have also been obtained in fine sand and clay soils.