Integrated Disease Management Strategy for Root Wilt in Coconut
M. Balasubramaniam
ICAR-Krishi Vigyan Kendra, Tirunelveli, Tamil Nadu (627 852), India
DOI: NIL
Keywords: Coconut, Management, Root wilt, Symptoms
Abstract
Root wilt disease caused by phytoplasma is one of the most devasting diseases of coconut palms. The major symptoms of the disease in leaves are wilting and drooping and flaccidity; ribbing, paling/ yellowing and necrosis of leaflets are typical symptoms of foliar diseases. Unopened pale yellow leaflets of spindle leaves are more susceptible to leaf rot disease, which is caused by Exerohilum rostratum and Colletotrichum gloeosporioides. The disease was transmitted by plant hoppers (Proutista moesta) and lace wing bug (Stephanitis typica). Phytoplasmas are generally present in the phloem sieve tubes and in the salivary glands of these insect vectors. Root wilt is a non-lethal, debilitating disease, and it can be efficiently managed by the following integrated management practices.
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Reference
Manimekalai, R., Soumya, V.P., Sathishkumar, R., Selvarajan, R., Reddy, K., Thomas, G.V., Sasikala, M., Rajeev, G., Baranwal, K., 2010. Molecular detection of 16SrX1 Group phytoplasma associated with root (wilt) disease of coconut (Cocos nucifera) in India. Plant Dis. 94(5), 636. DOI: 10.1094/PDIS-94-5-0636B.
Ramjegathesh, R., Karthikeyan, G., Rajendran, L., Johnson, I., Raguchander, T., Samiyappan, R., 2012. Root (wilt) disease of coconut palms in South Asia - an overview. Archives of Phytopathology and Plant Protection 45(20), 2485-2493. DOI: 10.1080/03235408.2012.729772.