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Citrus is a very important fruit crop of India as well as Himachal Pradesh. In India citrus is cultivated on an area of 1055 thousand hectares with a production of about 12746 thousand tonnes. (Anonymous, 2017). In Himachal Pradesh, total production of citrus is about 26853 tonnes from an area of 24649 ha having maximum area under K. lime (Anonymous, 2018). Citrus crop is threatened by number of diseases and among them citrus canker caused by Xanthomon as axonopodis pv. citri (Hasse) Vauterin et al. (1995) is one of the most devastating diseases in nursery and young orchards. So, the disease is of great economic importance all over the citrus growing area of the world including India. The disease has played a significant role in causing extensive losses in nurseries as well as in orchards (Gottwald and Irey, 2007). In Florida, nearly 2,57,000 orchard trees and 3,000,000 nursery plants were destroyed at a cost of over $ 6 million during the year 1915-33 and again during 1984-86 Art ic le History RECEIVED in 03rd December 2019 RECEIVED in revised form 09th February 2020 ACCEPTED in final form 28th February 2020 Citrus canker, Xanthomonas axonopodis pv. citri, intensity

Prevalence of Citrus Canker Caused by Xanthomonas axonopodis pv. citri in Subtropical Zone of Himachal Pradesh