TY - BOOK AU - NAVDEEP Singh TI - Studies on mosaic disease of sunflower (Helianthus annus L.) in the Punjab U1 - T 633.85 N29S PY - 1995/// CY - Ludhiana PB - PAU KW - SUNFLOWERS -- DISEASES AND PESTS KW - MOSAIC KW - MOSAIC DISEASES KW - OCCURENCE KW - PATHOLOGY KW - PL KW - VIRUS SUNFLOWER N2 - Sunflower mosaic was found prevalent in all the sunflower growing areas of the state and the incidence ranged from 20 to 220% The disease normally initiated in 4th leaf On the basis of physical properties. host range. transmission tests. serology and elec ER -