Patel, H. R.Patel, Sunilkumar Bhikhabhai2018-06-142018-06-141993http://krishikosh.egranth.ac.in/handle/1/5810052738Studies on determination of initial inoculum levels of P.aphanidermatum causing damping-off in bidi tobacco cv, A 119 revealed that initial inoculum levels of 5.0mg mycelial suspension or above per pot significantly reduced the seed germination (63.39 per cent and nusnber of bidi tobacco seedlings (60,00 per cent) over control. The inoculum levels of 1.0 and 2.5 mg mycelial suspension though reduced seed germination and number of seedlings remained at par with control. Studies on interaction between T. vulgaris and P. aphanidermatum on bidi tobacco cv. A 119 was carried out using two levels of the fungus viz., P1 (2.5 mg fungus) and P2 (5.0 mg fungus) and two levels of the nematode N1 (1000 nematodes) and N2( 2000 nematodes) alongwith control. The results on interaction between T. vulgaris and P. aphanidermatum showed more or less additive effect in reducing the seed germination compared to their individual levels.enNEMATOLOGY, AGRICULTUREA STUDYThesis