The effects of several concentrations of carbaryl on the life-table parameters of Aphis craccivora Koch were studied. It was revealed that all the early nymphal instars died after being exposed to carbayrl at concentration in excess of 0.0106% a.L Exposures at this concentration however, resulted in a 3-day delay in reproduction in 3% of the tested population and experienced a significantly shorter life span of 10 days when compared to 29 days in the control. Values for the life-table parameters also indicated that these populations would not grow and thus would be unable to continue into the next generation. In contrast, 8% of the population exposed to 0.0052% a.i. reached adulthood, 40% for those exposed to 0.0027% a i. and 68% for those at 0.0013% a.i.