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Biological Control of Basal Stem Rot of Chrysanthemum By Antagonists *
Author(s) -
Tschen JohannesSchengMing,
Lee YihYun,
Wu WenShi,
Liu ShanDa
Publication year - 1989
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1989.tb04494.x
Subject(s) - biology , rhizoctonia solani , inoculation , stem rot , husk , sawdust , horticulture , antagonism , botany , damping off , sowing , biological pest control , ecology , biochemistry , receptor
The basal stem rot of chrysanthemum caused by Rhizoctonia solani is an important chrysanthemum disease in Taiwan, Control of the disease using the antagonists of R.solani , including members of the genera Aspergillus, Gliocladium, Paecilomyces, Penicillhium, Tricboderma and Bacillus , was studied. The antagonists were grown in solid media or culture broths for preparations of rhe inoculums which were u.sed as soil amendments or coating materials for applications on the disease control. Sawdusts, rice husks and sawdust composts were used as supporting material to prepare the solid media. By planting of the chrysanthemums, the solid media growth with antagonists were put in the nursery sand beds, or the chrysanthemum cutting seedlings were coated with antagonists of culture broths; whilst the sand beds were inoculated with R. solani . The results indicated that all antagonists could protect the chrysanthemum from the infection of R. solani , and the effects of the solid media were higher than the culture broths. When the chrysanthemum seedlings were treated with the extracts of the antagonists, the disease could also be depressed. The different control effects on Rhizactonia disease of chrysanthemums resulted from the species of the antagonists and their delivery systems to be used.