Nematology Laboratory, Central Plantation Crops Research Institute, Regional Station, Krishnapuram-690 533, Kerala.
Extracts of leaves of Glyricidia maculata, Ricinus communis and Cratolaria juncea were lethal to Radopholus similis at dilutions of 1:5 within 24 hrs. The nematode mortality decreased with increase in dilutions of the extract. The chopped leaves of G. maculata (10g/Kg soil) as green manure was found to reduce the population of R. similis and promote the growth of black pepper under pot conditions.
Leaf extracts, Radopholus similis, Glyricidia maculata
