SURVEY AND ESTIMATION OF YIELD LOSS DUE TO STEM NECROSIS VIRUS OF POTATO GROWING AREAS OF SOUTH-EASTERN RAJASTHAN
MAHESH MEENA
College of Agriculture, Kota-324001, India.
DHUNI LAL YADAV *
Department of Plant Pathology, Agricultural Research Station, Agriculture University, Kota-324001 (Raj.), India.
HARPHOOL MEENA
Agricultural Research Station, Agriculture University, Kota-324001 (Raj.), India.
C. B. MEENA
College of Agriculture, Kota, India.
RAJENDRA KUMAR YADAV
Agricultural Research Station, Agriculture University, Kota-324001 (Raj.), India.
*Author to whom correspondence should be addressed.
Abstract
Stem necrosis disease seemed as dim brunet necrotic parts at the nodes and caused girdling of the petiole foremost to leak dropping and necrosis. Stem necrosis disease ranged from 8.5 to 22.5 per cent was recorded in Kota, Baran and Bundi districts of Rajasthan. Significantly tuber yield reduction was recorded at grade wise. Maximum yield reductions (63.16%) were observed under more than 75% disease severity in Southern Eastern Rajasthan.
Keywords: Potato, yield loss, stem necrosis, survey, tuber yield