Open AccessUSEFULNESS OF EARLY DIAGNOSTIC METHODS FOR EFFECTIVE MANAGEMENT OF BASAL STEM ROT (GANODERMA) DISEASE OF COCONUT
Author(s) -
A. Karthikeyan,
S. Mohan,
R. Bhaskaran
Publication year - 2002
Publication title -
cord. coconut research and development/cord
Language(s) - English
Resource type - Journals
eISSN - 2721-8856
pISSN - 0215-1162
DOI - 10.37833/cord.v18i01.356
Subject(s) - stem rot , basal (medicine) , horticulture , palm , coco , sampling (signal processing) , yield (engineering) , medicine , basal area , veterinary medicine , biology , materials science , ecology , composite material , physics , filter (signal processing) , quantum mechanics , artificial intelligence , computer science , insulin , computer vision
Chemodiagnostic methos EDTA and TTC tests and physiological parameters electrical conductivity and relative water content are useful to detect the basal stem rot disease in coconut palms, 4 - 14 months before visual symptom expression. The critical values of these tests for symptom expression have been fixed. In coconut trees, root sampling from any directions at 15 - 30 cm depth is optimum for early detection tests. Coconut palms without symptoms but showing higher values in diagnostic tests responded well to treatments by registering lesser disease index and higher nut yield than the treated palms with external symptoms.