EFFICIENT APPROACHES (IN VITRO) FOR MANAGEMENT OF KARNAL BUNT OF WHEAT AGAINST NEOVOSSIAINDICA

Wheat (Triticumaestivum L) is second most important cereal crop of India after rice and it grown throughout the country. It is a major staple crop of India and their quality of grain is reduced through infection of different diseases, among them Karnal bunt (Neovossiaindica) is one of major pathogen. It is of high quarantine importance which restrict global trade of wheat between different countries. In the present study, anin vitroattempt has been made to correlate effect of temperature (15-30)°C on teliospore germination as well as effect of systemic fungicides on mycelial growth of Neovossiaindica. During teliospore germination, maximum germination (90%) recorded at 20ºC after 28 days of incubationwhile minimum germination (32%) recorded at 30ºC after 7 days of incubation. The germination of teliospores increased progressively with an increase in temperature from 15 to 20ºC but decreased further significantly. Different systemic fungicides (Tilt 25EC, Amistar Top 325 SC, Folicur 25 EC, Bavistin 50WP and Vitavax 75 WP) were tested against Karnal bunt of wheat using Poison Food Technique and result revealed thatTilt 25 EC recorded maximum mycelial growth inhibition of (97.21%) followed by Amistar Top 325SC (96.88%) and minimum mycelial growth inhibition was recorded by Bavistin 50WP (94.22%).