Effect of intercrops on occurrence of Radopholus similis in arecanut palms
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2007-02-08
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Survey conducted in the major arecanut growing tracts of Kerala, Karnataka and Tamil Nadu revealed the widespread occurrence of the burrowing nematode, Radopholus similis in South India. Maximum percentage occurrence of R. similis was recorded from arecanut palms (55.1 %) intercropped with banana, followed by 45.2,43.9, 29.8 and 11.1 per cent when inter/mixed cropped with black pepper, cardamom, coconut and cacao, respectively, whereas in pure areca plantations, the percentage occurrence was only 25.4. Maximum percentage occurrence of R. similis was also noticed in banana (64.5%) compared to black pepper (26.0%), cardamom (19.5%), coconut (16.6%) and cacao (Nil). Banana as an intercrop was found to favour multiplication of R. similis in arecanut gardens, whereas when cacao was used as mixed crop nematode population was lowest and cacao was found to be free of infestation.
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J.Plantn.Crops 1991 Suppl. v-18 p-299-301