[01] Okafor Chike Samuel, Applied Biochemistry Department, Nnamdi Azikiwe University, Awka, Nigeria. [02] Ononuju Chika Ola, Applied Biochemistry Department, Nnamdi Azikiwe University, Awka, Nigeria. [03] Eze Chimaoge Gloria, Applied Biochemistry Department, Nnamdi Azikiwe University, Awka, Nigeria. [04] Nwosu Onyeka Kingsley, National Biosafety Management Agency, Abuja, Nigeria. [05] Ifedilichukwu Nma Helen, Medical Biotechnology Department, National Biotechnology Development Agency, Abuja, Nigeria.

The increased use of pesticides in the control of vector pests has raised some concern over the adverse effect of these chemicals on humans, domestic animals and their environment. This research was undertaken to harness the beneficial use of dried Chromolaena odorata (Siam weed) leaves and stems to control beans weevil (Acanthoscelides obtectus) in storage system. Experimental research method was done with two groups, groups A and B. Group A was treated with dried grinded Chromolaena odorata leaves and stem in the ratio 1:1 and group B was treated with dried chopped Chromolaena odorata leaves and stem in the ratio 1:1. Result of the study revealed higher mortality of bean weevils after seven (7) days in group A with the highest mortality rate obtained from Treatment four (4) with ten (10) grams of dried ground Chromolaena odorata leaves and stem. Based on this study, beans farmers and traders could use Chromolaena odorata to control beans weevils in their storage area.

Chromolaena odorata, Bean Weevil, Bio-pesticide, Mortality Rate, Nitrate, Actellic Dust

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