1Department of Plant Pathology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh173230, India
2RHRTS and KVK, Dr YS Parmar University of Horticulture and Forestry, Sharbo, Kinnaur, Himachal Pradesh-172107, India
*Corresponding Authors’ Email: kirtipaljat@gmail.com
Online Published on 05 January, 2023.
Nummularia discreta causes nail head canker is a slowly spreading apple canker disease causing widespread losses in high quality apple was observed in the Kinnaur, Kullu, Mandi, Sirmaur, and Shimla districts of Himachal Pradesh during the regular canker development season, from May to December in 2017 and 2018. Disease incidence of nail head canker was recorded maximum at Sharbo in district Kinnaur (33.81%) followed by Chirgaon area of Shimla district (30.96%), whereas disease was totally absent in some places. Similarly, percent disease index of nail head canker was maximum at Chagaon (15.49%) followed by Nichar (15.21%) of Kinnaur district, while minimum percent disease index of 0.00 per cent was depicted from different location. The mean percent disease index of this canker ranged from 0.00 to 15.49 per cent during 2017 and 2018 crop seasons.
Nail Head, Canker, Apple, Himachal Pradesh, Disease Incidence, Percent Disease Index
