Effect of aqueous leaf extracts of botanicals on egg hatching and larval penetration of Meloidogyne incognita in Banana

A Study on effect of various aqueous leaf extracts on egg hatching and subsequent larval penetration of Meloidogyne incognita in banana cv. Basrai roots, indicated that aqueous leaf extracts of argemone (Argemone maxicana, L.) and lantana (Lantana camera, L.) and neem seed kernel suspension NSKS (Azadirachta indica Juss.) proved to be the most effective in almost complete inhibition of nematode egg hatching at 48, 96 and 144 hrs, indicating ovicidal effect. Ipomea (Ipomoea fistulosa) and castor (Ricinus communis) leaf extracts were the least effective. There was no larval penetration from egg masses previously treated with argemone and lantana leaf extracts and NSKS treatment. Significantly more nematode larval penetration was recorded from egg masses treated with castor and Ipomea leaf extracts, indicating their ovistatic effect.