Evaluation of seed dressing fungicide mixtures against Aspergillus niger, the incitant of collar rot of groundnut

Studies were undertaken to determine the feasibility of using fungicide mixtures more pro fitably against pre-emergence seed-rot or post-emergence seedling blight of groundnut incited by Aspergillus niger. Mixtures of captan + thiram, both at the higher and lower concentrations, were significantly superior to captan + ceresan or thiram + ceresan. It was also observed that ceresan in mixture with captan or thiram did not adversely effect the toxicity of either of the latter two. In other words, captan + ceresan or thiram + ceresan and also thiram + captan were biologically compatible.