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International Journal of
Entomology Research
ARCHIVES
VOL. 5, ISSUE 4 (2020)
Entomocidal effectiveness of some indigenous botanicals’ powders against maize weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae)
Authors
Riaz-ud-din, Muhammad Mamoon-ur-Rashid, Muhammad Mansoor
Abstract
The entomocidal efficacy of six plant species including Azadirachta indica, Cardamine hirsuta, Allium sativum, Curcuma longa, Citrulus colocynthis and Calotropis gigantean was studied against maize weevil cultured on maize grains (Cv. Azam white) in the laboratory of Entomology Department, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Pakistan. Six different doses i.e. 5000, 10000, 15000, 200000, 25000 and 30000ppm, respectively of each plant powder were applied to 20g sterilized maize grains at mean conditions of 27± 2°C and 65 ± 5% R.H. Twenty (20) newly emerged adult maize weevils were introduced in 15cm diameter glass petri dishes on maize grains treated with the evaluated plant powders. Cumulative mortality of maize weevil was recorded after 24 hours to 21 days exposure periods. The maximum efficacy of all the tested plant powders was found at 21 days after exposure period. Among the treatments, at 21 days after the exposure period, A. indica plant powder showed the maximum mean cumulative adult mortality of 91% followed by C. longa registering 76.66% mortality of adult maize weevil, whereas minimum adult mortality of 2.66% was recorded in control where none of the plant powders were applied. However, among the tested plant powders, least mean cumulative adult mortality of 18.66% was observed in C. gigantean treated grains. It was obvious from the obtained results that mortality of adult maize weevils increased with increase in the doses of the tested plant powders. On the basis of present findings, it is concluded that the tested plant powders can be utilized for the management of maize weevil.
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Pages:33-39
How to cite this article:
Riaz-ud-din, Muhammad Mamoon-ur-Rashid, Muhammad Mansoor "Entomocidal effectiveness of some indigenous botanicals’ powders against maize weevil, <em>Sitophilus zeamais</em> (Motschulsky) (Coleoptera: Curculionidae)". International Journal of Entomology Research, Vol 5, Issue 4, 2020, Pages 33-39
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