M.A.M. Khan
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K.S. Islam
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ABSTRACT
Field investigation was carried out on nature and extent of damage of jackfruit borer, Diaphania caesalis Walker (Pyralidae: Lepidoptera) at Jackfruit Research Project, Bangladesh Agricultural University, Mymensingh and in some jackfruit growing areas in Bangladesh. Jackfruit borer attacks the tender shoots, male and female spikes and fruits of all development stages. At flowering stage the larva bores into spike and feeds on internal tissues. At initial infestation, anthesis of the male spikes do not occur and later on the affected spikes are rotten and shaded off from the plant. Severely infested female spikes drop off before fruit setting. The jackfruit borer attacks the jackfruit at different stages of fruit development. Early infestation results in deformation of fruits and sometimes dropping off the immature fruits. The larvae bore into the mature fruit and cause damage to the edible part. Later infested fruits frequently get rotten due to entrance of rainwater in to the fruits. In nursery, caterpillars damage the tip of jackfruit sapling causing retardation of growth of the saplings and initiation of lateral branches. The average percentage of fruit infestation was 27.44. The number of bore and amount of damage per infested fruit was 1.47 and 525.37 g, respectively. The reduction of market price due to jackfruit borer infestation in six locations of Bangladesh ranged from 27 to 39%.
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How to cite this article
M.A.M. Khan and K.S. Islam, 2004. Nature and Extent of Damage of Jackfruit Borer, Diaphania caesalis Walker in Bangladesh. Journal of Biological Sciences, 4: 327-330.
DOI: 10.3923/jbs.2004.327.330
URL: https://scialert.net/abstract/?doi=jbs.2004.327.330
DOI: 10.3923/jbs.2004.327.330
URL: https://scialert.net/abstract/?doi=jbs.2004.327.330
REFERENCES
- Gomez, K.A. and A.A. Gomez, 1984. Statistical Procedures for Agricultural Research. 2nd Edn., John Wiley and Sons Inc., Hoboken, New Jersey, ISBN: 978-0-471-87092-0, Pages: 704.
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