Vol. 11, Special Issue 8 (2022)

Author(s):
Siddu Lakshmi Prasanna and Priya John

Abstract:
Maize is the most important cereal after rice and wheat. It is called as “Queen of the cereals” or “Miracle crop”. The present study was conducted to manage maydis leaf blight with new generation chemical molecules in In vitro. Five non-systemic fungicides, six systemic fungicides and six combination fungicides at three different concentrations were screened in In vitro for evaluating the efficacy against B. maydis which caused maydis leaf blight. Among non-systemic fungicides, at 1000ppm concentration chlorothalonil showed maximum inhibition in mycelial growth (88.16%) followed by copper oxychloride (82.42%) and least inhibition was found in captan (33.83%). Among systemic fungicides, at 500 ppm concentration, hexaconazole, propiconazole, difenconazole and kresoxim methyl showed cent per cent inhibition in mycelial growth followed by azoxystrobin (79.61%) and the least inhibition was observed in carbendazim (74.62%). Among combination fungicides, at 500 ppm concentration, trifloxystrobin + tebuconazole, captan + hexaconazole, pyraclostrobin + epoxiconazole and azoxystrobin + difenconazole showed cent per cent inhibition in mycelial growth followed by thiophanate methyl + pyraclostrobin (76.22%) and the least inhibition was observed in carbendazim + mancozeb (28.29%).