BIOINFOLET - A Quarterly Journal of Life Sciences
Web of Science
  • Year: 2012
  • Volume: 9
  • Issue: 3

Disease severity of purple blotch of onion caused by Alternaria Porri

  • Author:
  • M Abdul Kareem, K. V. M. Krishna Murthy, M. A. Waseem, A. Nadaf Hasansab
  • Total Page Count: 3
  • Page Number: 261 to 263

Department of Plant Pathology, Agricultural College, Bapatla, Andhra Pradesh

Online published on 24 August, 2012.

Abstract

Onion plants of different ages were inoculated with conidial suspension of Alternaria porri. With the increase in age, there was significant increase in disease development. Highest per cent disease index (54.43) was recorded on plants inoculated at the age of 60 days. With the increase in the inoculum concentration, there was significant increase in disease development due to A. porri. Highest per cent disease index (57.03) was recorded on plants inoculated with the inoculum with 108 spores/ml.

Keywords

Onion, Alternaria porri, Purple Blotch. Host age, Inoculum