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Pakistan Journal of Biological Sciences
Year: 2001  |  Volume: 4  |  Issue: 9  |  Page No.: 1118 - 1119

Estimation of Yield and Quality of Banana Fruit Affected by Banana Leaf and Fruit Beetle, Nodostoma viridipennisM (Coleoptera: Eumolpidae) in Bangladesh

Z.M. Sarwar Zahan, M. Abdul Ahad, M.S. Bari, M. Alamgir Hossain and M.J. Islam    

Abstract: The study was made to evaluate the yield and quality of banana fruit affected by banana leaf and fruit beetle, Nodostoma viridipennis Mots, in an orchard and laboratory of Bangladesh Agricultural University, Mymensingh from October, 1997 to October, 1998. The beetle damaged the newly formed fruits in the hand having cluster of 13 bananas each showing 33-57 scars in seven days by 5 beetles, but the mean number of scars on fruits increased in second week after their emergence. The fruit size was also significantly reduced by caging insects after emergence and 15 days after emergence with more reduced size of the former fruit. The damage done by this beetle had tremendous influence on both quantity and quality of banana. Ripening duration of damaged fruits was prolonged significantly and fruit weight also reduced in comparison with beetle free fruits. The quality of infested banana with especial reference to skin colour and thickness, taste, smell and pulp of fruit was not normal, considerably affecting the consumption value.

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