Influence of Petroleum Ether Leaf Extract of Vitex Negundo On the Oviposition Deterrence of Adult Uzifly(Exorista Bombycis)

Authors : Cheruku Appiya Chinnamma,

Volume/Issue : Volume 2 - 2017, Issue 5 - May

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Considering the importance of botanicals in the Silkworm(Bombyx mori)pest management as an ecofriendly approach, neem oil and petroleum ether leaf extract of Vitex negundo has been tried to control Uzifly in the present study. Sixty fifth instar Silkworm(Bombyx mori)larvae were reared in the wire mesh cage after treating with 0.5, 1 and 1.5 µg of petroleum ether leaf extract of Vitex negundo / 1µl of acetone. Then a pair of two day old Uzi fly were released into the cage and allowed to oviposite for 48 hrs to observe oviposition deterrence. Controls and Carrier controls were maintained to compare the results and the experiments were replicated six times. The effect of 0.5µg, 1µg and 1.5µg of Vitex negundo leaf extract /1µl of acetone on the Uzifly oviposition on the fifth instar Silkworm(Bombyx mori)larvae recorded on an average was 136.67±0.715, 127.00 ±0.632 and 109.50±0.764 respectively. In the control and carrier control it was recorded as 169.33±0.615 and 164.67±0.333 respectively. From these results it is evident that petroleum ether leaf extract of Vitex negundo treated resultants reduced the oviposition of Uzifly on the fifth instar Silkworm(Bombyx mori)larvae compared to the controls.

Keywords : Vitex negundo, Uzifly, Silkworm(Bombyx mori)(Bombyx mori).


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