BARE ROOT DIP TREATMENT OF TOMATO SEEDLINGS IN CALOPTOPIS OR CASTOR LEAF EXTRACTS MIXED WITH PAECILOMYCES LILACINUS SPORES FOR THE MANAGEMENT OF MELOIDOGYNE INCOGNITA

RAO, M. S.; REDDY, P. PARVATHA; NAGESH, M.

Abstract


Experiments were conducted for the management of Meloidogyne incognita by a bare root dip treatment of tomato seedlings in plant leaf extracts mixed with Paecilomyces lilacinus spores. The bare root-dip treatment of tomato seedlings in castor leaf aqueous extract (5 or 10%) mixed with P. lilacinus spores significantly increased the plant growth parameters and reduced the root-knot index and nematode population in comparison to the calotropis leaf extract (5 or 10%) + P. lilacinus and P. lilacinus alone treatments. Castor leaf extract both at 5 and 10% significantly increased mycelial growth, sporulation and propagule density of P. lilacinus on roots resulting in increased colonisation of the bio-agent on the roots of tomato offering enhanced biological protection with the consequent effect of increased parasitization of eggs of M. incognita.

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