Efficacy Evaluation of Selected Biorational Combinations in the Management of Tomato Blight

This experiment was conducted in Katabi Sub-county in Wakiso District. The study evaluated efficacy of selected biorational combinations in the management of tomato blight. These biorationals were picked from the locally used plant materials used as natural pesticides and fungicides. They included Carica papaya, Phytolacca dodecandra, Jatropha curcas, Capsella Bursa-pastoris and. Tephrosia vogelli. The major objective was to evaluate efficacy of Carica papaya, Phytolacca dodecandra, Jatropha curcas, Capsella Bursa-pastoris and. Tephrosia vogelli.against tomato blight. This research was guided by three major objectives that is; to determine the biorational combinations that reduces tomato bright to levels below economic injury thresholds, to establish the optimum concentration of biorationals used in controlling tomato blight and to identify the ecological conditions that influence the effectiveness of biorationals when managing tomato blight. This research used a completely randomized research design in which three treatments were made at varying biorational concentrations (25%, 50%, and 75%). Data was collected from all treatments and efficacies for each treatment evaluated. At the end it was established that treatments of Carica papaya with Phytolacca dodecandra were more effective in managing tomato blight below economic injury thresholds. This research recommended that Carica papaya with Phytolacca dodecandra should be used by farmers in the management of tomato blight.