Abstract :
Chilli (Capsicum annuum) is one of the most important spice crop in the world having nutritive value especially rich in Vitamin C. It suffers excess yield loss by the infection of root rot caused by Rhizoctonia solani worldwide. The present study was conducted to determine the effect of different inoculum levels of R. solani on growth and disease development of chilli cv. G-4 under pot conditions.The observations of this study revealed that R. solani is a potential pathogen, significantly reduced the length, fresh and dry weight of shoot and root of chilli cv. G-4 and increase root infection upto 5-65.7 per cent. The highest reduction in shoot length (27.5%), root length (10.3%), shoot fresh weight (15.5%), root fresh weight (4.3%), shoot dry weight (6.7%) and root dry weight (1.3%) were observed at highest inoculum level of 4 g culture/kg soil. However, highest root infection (65.7%) was observed at highest inoculum level i.e. 4g culture/kg soil,while root infection was least (5.0 %) at lowest inoculum level i.e. 0.5 g culture/kg soil.
Keyword :
Rhizoctonia solani, chilli, inoculums density, growth, disease development