Etiology and recurrence of coconut leaf rot with special reference to seedlings
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2007-02
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A fungal complex causes leaf rot disease (LRD), Colletotrichum gloeosporioides and Exserohilum rostratum that superimposed on root wilt disease (RWD) affected coconut palms. Severe disease incidence was observed in young, field grown RWD affected seedlings. LRD was consistently reproduced in spindles of two year old RWD affected seedlings in field using the pathogens, individually and/or in combination. Pathogenic fungi produced lesions, subsequently resulted in rotting of the tissues. Lesions were observed on leaf petioles, mid-ribs/ veins, both in naturally infected and artificially inoculated plants. Spindles emerged subsequent to inoculation also exhibited disease symptoms indicating their recurrence. In artificially inoculated plants, £ rostratum produced lesions comparatively faster. From naturally LRD infected young palms, C. gloeosporioides, E. rostratum and some other fungi were isolated, confirming the complex fungal etiology of the disease. C. gloeosporioides was the most frequently
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In: 13th Plantation Crops Symposium, Coimbatore (16-18 December) 1998 p-400-403