Occurrence and population status of root-knot nematode, Meloidogyne incognita on cucumber under protected cultivation in Rajasthan

Abstract

Survey was carried out to determine the occurrence and population status of root-knot nematode in poly-house of different locations of Rajasthan. Total 40 poly-houses visited and collected 158 root and soil samples during 2 year survey. In results, it was keen observed that all samples of both soil and root were infected with root-knot nematode, Meloidogyne incognita. After the examination of roots 40 to 142 galls/5 g roots and 26 to 135 egg masses/5 g root of cucumber found in poly-houses of different locations. While, number of larvae ranging between 545 to 1460 J2 per 100 cc soil in poly-house on cucumber. It was also recorded that 100% occurrence with above economic threshold level (ETL) of root-knot nematode found in visited poly-houses.