Damage Potential and Loss Caused By the Groundnut Bruchid Caryedon Serratus Olivier [ Coleoptera : Bruchidae ) On Stored Groundnut and Tamarind in Yola

The Damage Potential, Loss and Physical Damage done to shelled, unshelled ground nut and tamarind by the groundnut bruchid were evaluated. The experiment was carried out in the Laboratory of the Department of Crop Production and Horticulture, Federal University of Technology, Yola, at room temperature 38 – 39C and relative humidity 45 – 50C. It was arranged in a Completely Randomized Design (CRD). The results obtained showed that the groundnut bruchid Caryedon serratus has the Potential and ability to destroy stored groundnuts and tamarind, making it unfit for consumption. Up to 90%, 80% and 79% damage and 70%, 68% and 64% weight loss were recorded in shelled, unshelled groundnut and tamarind respectively. All the treatments had high significant damage and loss caused by the test insect compared to the controls at P<0.05 level of significance using the Student Newman-Keuls (SNK) test for variables. Percentage mortality of adult bruchid was highest in unshelled groundnut (46.27) compared to tamarind (44.1) and females lay upto 305 eggs on shelled groundnut than unshelled groundnut (280.0) and tamarind (283.3).