HANUMAN SINGH2017-04-282017-04-282013http://krishikosh.egranth.ac.in/handle/1/5810010242The fungus C. trifolii f. sp. gladioli did not survive in pots containing sterilized soil during the off-season. Colonies of fungus C. trifolii f. sp. gladioli could not be observed from the artificially inoculated soil by dilution plate method. Among fifty varieties evaluated in the field, none was found to be immune. However, nine varieties namely SJN, Yellow Stone, Plum Tart, Jacksonville Gold, Pink Elegence, Delhi Pink, Shagun, Arka Kesar and Punjab Flame showed very good level of genetic resistance (disease reaction: ≤ 1.0) against the disease. The varieties, namely Jester, Chandani, Punjab Dawn, Gunjan, Shobha, Solist, Jessica, Aldebaran, Purple Flora, Overture and Alexander the Great were susceptible to the disease (disease reaction: >3.0-4.0). Out of the nine fungicides evaluated in pots, all the fungicides except for Bavistin (0.1%) reduced the severity of the disease significantly over the control. In field, the minimum disease severity was recorded in Antracol, Score and Tilt (1.33), followed by Dithane M-45, Kavach and Topas (1.67). Moderate disease severity was found in Cuman-L, Blitox and Bavistin sprayed plant (2.33). The yield data showed that the highest number of corms/plot was recorded in Score (58.00); followed by Tilt (57.67), Kavach (56.33), Antacol (55.33), Dithane M-45 (54.33), Cuman-L (54.00), Bavistin (53.00), Topas (52.67) and Blitox (50.00).ennullThesis