Bioactivity of and Phytochemical studies on extractives from some Ghanaian plants

Ten indigenous plants with folkloric reputation for pesticidal activity have been screened for their biological activity using the shrimp lethality test. Analyses were carried out on leaves and bark of each plant. Annona squamosa and Piper guineense and the bark of Carapa procera and Piper guineense with LC50 less than 25 ppm were active. All extracts which gave LC50 values of less than 200 ppm were considered bioactive and were screened for their phytochemicals using solvents of different polarities.