author(s)
Wilson Rwai Waweru, Francis Karomo Wambugu and Rose Mbabazi

abstract
This study evaluated the bioactivity of Bougainvillea spectabilis and Jacaranda mimosifolia leaves powder against adult Acanthoscelides obtectus. The plant powders obtained was weighed into 2.5g, 5g and 10g and placed into three 250 ml conical flasks and mixed. Afterwards, 130 adult bean weevils were introduced and the flasks covered with a muslin cloth. Data was collected after every 24 hours for four days. In all time intervals Bougainvillea spectabilis powder showed mortality potential against Acanthoscelides obtectus with highest mean mortality being recorded at the 10g concentration. Jacaranda mimosifolia first showed mortality potential against the study insects after 48 hours. The study concluded that both plant powders are active against been weevils.