S. M. A. Islam, N. Akhter* and M. A. Latif
*Corresponding author’s E-Mail: nurmohalsau@yahoo.com


The study was conducted at Entomology laboratory of Sher-e-Bangla Agricultural University (SAU), Dhaka during the period from November, 2013 to May, 2014 to study the botanical management of mango mealybug. In laboratory, leaf extraction of neem, korobi (Oleander Nerium), marigold (Tagetes erecta), nishinda (Vitex negundo), tobacco (Nicotiana tabacum), tomato (Solanum lycopersicum) and neem (Azadirachta indica) seed kernel (NSK) extract against 1st, 2nd, 3rd instar nymph and adult female of mango mealybug were evaluated. After 24, 48, 72, 96 and 120 hours (h) of post treatment NSK extract gave the highest mortality of 5, 10, 15, 13.3 and 10%, respectively. Similar trend of mortality was also found in spraying botanical extracts. Mortality in dipping method of 2nd instar mealybug was found 23.33% after 96 h of post treatment but declined mortality (10%) was found after 120 h of post treatment. In spraying method highest mortality of 23.33% was found after 48 h of post treatment. Mortality of 3rd instar nymph was found lower than 2nd instar nymph and found highest (10%) after 96 h of post treatment in dipping and 11.67% after 48 h in spraying. 1st instar and 2nd instar mango mealybug was more vulnerable than 3rd instar against botanicals. Up to 120 h of treatment the highest mortality was found in NSK extract followed by neem leaf extract. The lowest mortality was found in control where no botanicals were applied.

Key words: Botanical and Mango mealybug.

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