Abstract
Studies on the impact of different media, influence of temperature and pH on the growth, cultural and morphological characters of pathogen is greatly influenced for successful management of crop diseases. Therefore, the present study was carried out during 2017 at the Department of Plant Pathology, Faculty of Agriculture, Annamalai University, Tamil Nadu, India to assess the growth of Alternaria solani in different media, temperature and pH. A. solani was inoculated with different media, range of temperature and pH and assess their growth by agar plate method. All the experiments replicated thrice. The study clearly revealed that among the media tested both solid and liquid, PDA and PD broth was found to be the best in supporting the mycelial growth (88.67mm) and mycelial dry weight (289.51mg) of the pathogen. Also, the study proved that temperature of 30ºC was suitable for A. solani and recorded maximum mycelial growth of 69.52mm. Whereas, the optimum pH for the growth of pathogen 6.5 and recorded maximum mycelial growth of 71.52mm. It is concluded that the isolate will be further tested for their aggressiveness in early blight disease incidence.
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