EFFICACY OF FOLIO GOLD 440 SC AGAINST DAMPING OFF, BLIGHT AND BLACK SHANK DISEASES IN FCV TOBACCO NURSERIES OF KLS

Abstract

Bio-efficacy of Folio-Gold containing chlorothalonil + metalaxyl M was tested against damping off (Pythium aphanidermatum, P. myriotylum) and blight & black shank (Phytophthora parasitica var. nicotianae) in FCV tobacco nurseries. The molecule effected 78.4 to 88.3 % and 84.1 to 91.9% at 30 and 40 DAS respectively as against 85.4 and 87.8% in recommended Ridomil MZ 72 WP schedule. The blight disease control was in the range of 84.1 to 91.9% in treatments involving Folio Gold at 45 DAS as against 85.9% in recommended schedule. The black shank disease control was in the range of 68.7 to 71.4% as against 71.8% in recommended schedule. The efficacy was on par with recommended schedule involving Ridomil MZ 72 WP. The significant control of diseases reflected on yield of healthy transplants. The yield of total healthy transplants in different treatments involving different dosages ranged from 709 to 747/ m2 as against 428/m2 in untreated control. The economical schedule gave an ICBR of 1:8.4 in bulk evaluation controlling the diseases effectively. The schedule can form as an alternative to Ridomil MZ 72 WP schedule.