scholarly journals USEFULNESS OF EARLY DIAGNOSTIC METHODS FOR EFFECTIVE MANAGEMENT OF BASAL STEM ROT (GANODERMA) DISEASE OF COCONUT

CORD ◽  
2002 ◽  
Vol 18 (01) ◽  
pp. 34
Author(s):  
A. Karthikeyan ◽  
S. Mohan ◽  
R. Bhaskaran

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.

CORD ◽  
1993 ◽  
Vol 9 (01) ◽  
pp. 34
Author(s):  
R. Bhaskaran ◽  
N. Ramadoss ◽  
A. Karthikeyan ◽  
T.K. Ramachandran

Trichoderma harzianum multiplied in farm yard manure and applied with neem cake to coconut palm affected by basal stem rot disease reduced the severity of the disease. T harzianum applied in coconut basins survived for more than one year, though the population gradually declined after four months. Application of Azotobacter or phosphobacterium (200 g peat based inoculurn) to basal stern rot disease affected coconut gave lesser increase in disease index than control and increased the nut yield.   Tapping for neera production in mild and moderately diseased palms showed lesser disease index than untapped palms of corresponding disease severity.


2014 ◽  
Vol 11 (10) ◽  
pp. 1841-1859 ◽  
Author(s):  
Fabien Fonguimgo Tengoua ◽  
Mohamed M. Hanafi ◽  
A. S. Idris ◽  
Kadir Jugah ◽  
Jamaludin Nurul Mayziatul Azwa ◽  
...  

2005 ◽  
Vol 159 (1) ◽  
pp. 159-170 ◽  
Author(s):  
C. Utomo ◽  
S. Werner ◽  
F. Niepold ◽  
H.B. Deising

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