NEW RECORD OF COCHLIOBOS HAWAIIENSIS ALCORN ASSOCIATED WITH BUTTON SHEDDING AND PREMATURE NUTFALL IN COCONUT IN INDIA
Keywords:
Premature Nutfall in Coconut, Button Shedding
Abstract
From the shed buttons and immature nuts of coconut, a jungus was isolated which on artificial inoculation in coconut bunches of varying ages caused button shedding and premature nutfall. The fungus was identified as Cochliobolus hawaiiensis Alcorn. Buttons up to 4 months age were susceptible to the fungus. Among the thirteen coconut genotypes studied, infection was high in Lakshadweep Micro, Lakshadweep Ordinary an d East Coast Tall x Malaysian Green Dwarf (ECT x MGD). Carboxin 75 WP (500 ppm and above), mancozeb and copper oxy chloride (1000 ppm and above) completely inhibited the mycelial growth of C hawaiiensis under in vitro conditions. In Vivo, mancozeb (0.2%) was very effective for the control of the disease.
References
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BHASKARAN, R., RETHINAM P. and NAMBIAR, K.K.N. 1999 Thanjavur wilt of coconut. J. Plan. Crops 17. p. 69 79.
GADD, C.H. 1922. Nutfall in coconuts. Dept. Agric. Ceylon. Bulletin, p. 53
MAC DONALD, 1924. Ann. Rep. Kenya, Dept. Agric. pp. 106 111
OHLER. J.G. 1994. Coconut, Tree of Life. FAO Plant Production and Protection paper 57, Rome p. 446
SIMMONDS, H.W. 1924. Mission to New Guinea Bismarks, Solomon and New Helerido, Legis. Council. Paper No. 22, Fiji
SUDHAKARA, K. 1990. Button shedding and premature nutfall in coconut. J. Plant. Crops. 18 pp. 66 77.
SULLADMATH, V.V. and SHANTAPPA, R.B. 1979, Nutfall in coconut associated with Botiyosphaeria rhodina. (Berk & Curt) V.Arx. Current Research l 9. p. 13.
SUNDERARAMAN, S. and KRISHNASWAMI, C.S. 1933. Fungoid diseases of important crops in Madras presidency. Bulletin No.32 of the Madras Department of Agriculture.
SUNDERARAMAN, S. and RAMAKRISHNAN, T.S. 1924. The Mahali diseases of coconut in Malabar. Menip. Dep. Apric. India. Bot. Ser. 13. pp. 97 97
Published
1996-12-01
How to Cite
A. Karthikeyan, & R. BIL4SKARAN. (1996). NEW RECORD OF COCHLIOBOS HAWAIIENSIS ALCORN ASSOCIATED WITH BUTTON SHEDDING AND PREMATURE NUTFALL IN COCONUT IN INDIA. CORD, 12(01), 34. https://doi.org/10.37833/cord.v12i01.298
Section
Articles
