The effect of temperature upon the pathogenicity and chemical control of Rhizoctonia solani K. on potato tubers (Solanum tuberosum L.)

Abstract

In poe experiment, it was found that <i>Rhizoctonia solani</i> was most pathogenic to potato sprouts at 14.8 and 17.4°C. At a third temperature applied (9.9°C), the pathologenicity was much lower. The higher temperatures decreased the fungicidal activity of Ceresan Nassbeize and Rizokton. The addition to the soil of 1 and 3% of corn straw did not affect the pathogenicity of the fungus.