SOME OBSERVATIONS ON THE GROWTH OF RHIZOCTONIA CROCORUM (PERS.) DC. IN PURE CULTURE

摘要: SUMMARY. The organism dealt with in this paper is that which has been commonly known country as Rhizoctonia violacea Tul. but until satisfactory proof forthcoming of a spore stage the it should be by its valid prior name, Crocorum (Pers.) DC. The methods used for isolation fungus pure culture are described and some account given preliminary inoculation experiments re-isolation parasite. It shown growth R. will occur on very wide range sterilised artificial material when culture. No form occurred any large number cultures have grown. Some notes difficulties arising temperature relation work from differences “internal condition” under varying conditions, optimum meat-malt extract agar measured increase diameter colonies neighbourhood 25.5° C. This probably explains geographical distribution severe attacks field.