Cereal cyst nematode (Heterodera avenae) is a microscopic obligate parasite which feeds on roots, belonging to sedentary endoparasitic group of nematodes. It was first discovered from Rajasthan in 1958 by Vasudeva. This discovery proved as a landmark event in the history of Nematology in India. It is most prevalent in light sandy soil in North Indian conditions i.e. Rajasthan, Haryana, Delhi, Himachal Pardesh, Jammu & Kashmir, Madhya Pardesh, Punjab and Uttar Pardesh. Wheat and Barley are the main hosts in India.
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