Inhibitory Potentialities of Bio-control Agents on Cochliobolus heterostrophus Inciting Maydis Leaf Blight of Maize in Manipur

The antagonistic potentialities of seven species of native Trichoderma viz., T. atroviride, T. koningiopsis, T. ovalisporum, Hypocrea lixii, T. harzianum, T. asperellum and T. harzianum were evaluated in vitro against Cochliobolus heterostrophus causing maydis leaf blight of maize. The current study of dual culture assay, revealed the percentages of mycelial growth inhibition of C. heterostrophus by Hypocrea lixii, T. harzianum, T. atroviridae, T. koningiopsis, T. ovalisporum, T. asperellu and T. harzianum were 80.4%, 83.80%, 83.80%, 82.85%, 85.23%, 83.33% and 82.38% respectively. Each species significantly slowed the Cochliobolus heterostrophus pathogen's expansion. The findings indicate that C. heterostrophus, a common pathogen associated with maize leaf blight, is capable of being inhibited to a significant degree by all seven species of Trichoderma, using them as effective potential antagonists

In-vitro Sensitivity Test of Native Trichoderma spp. against Growth of Rhizoctonia solani f.sp. sasakii Causing Banded Leaf and Sheath Blight of Maize in Manipur

The antagonistic potential of seven species of native Trichoderma against Rhizoctonia solani f.sp. sasakii were evaluated in dual culture method which includes T. asperellum (KU933476), T. koningiopsis (KU904460), Hypocrea lixii (KX0113223), T. harzianum (KU933471), T. ovalisporum (KU904456), T. harzianum (KU904458), T. atroviridae (KU933472). Among them T. asperellum showed highest inhibition percentage (78.09%), followed by Hypocrea lixii by (70.95%), T. ovalisporum by (68.76%), T. atroviride by (54.22%), T. harzianum by (64.76%), T. koningiopsis by (64.76%) and T. harzianum by (62.38%) respectively. However, all the species considerably inhibited the growth of R. solani