Efficiency of plant extracts and Trichoderma sp. against Turcicum leaf blight of Maize caused by Exserohilum turcicum (Pass.) Leonord and Suggs

Abstract

Mancozeb @ 0.25% was effective in the inhibition of mycelial growth (85.2%) of Exserohilum turcicum. Among the bio-agents, Trichoderma harzianum was found effective in the inhibition of mycelial growth (64.1%) followed by T. viride with inhibition (58.7%). NSKE @ 5% was found effective in the inhibition of mycelial growth (54.4%) followed by aloe-vera @ 10% (40.0%) and lantana leaf extract @ 10% (17.7%). The plant extracts, potential biocontrol agent and fungicide found effective in vitro were tested against the turcicum leaf blight of maize under field conditions. Among, all the treatments, mancozeb @ 0.25% was found effective in the disease reduction (36.1%), followed by T. harzianum @ 2% (32.3%), T. viride @ 2% (29.2%). Plant extracts, NSKE @ 5% was found effective in disease reduction (23.5%) followed by aloe-vera @ 10% with (22.7%) and lantana leaf extract @ 10% (11.8%).