Antifungal Effects Of Jatropha (Jatropha Curcas) Seeds And Argel (Solenostemma Argel Del. Hayne) Leaves Aqueous Extracts On The Growth Of The Fungus (Pestalotiopsis Spp.) In Guava In Vitro.

Abstracts

Guava (Psidium guajava) a vitamin C enrich fruit tree is grown abundantly throughout Sudan. In fact, it is an important fruit in many parts of the world where the climate is suitable for its production. The present investigation was undertaken under laboratory conditions of Plant Protection Department, College of Agricultural Studies, Sudan University of Science and Technology to study the effect of different concentration of aqueous extracts of jatropha seeds and argel leaves concentrations, on the growth of the fungus Pestalotiopsis sp., under laboratory conditions in order to formulate promising disease management approach. The fungus used in this was first confirmed as Pestalotiopsis sp. associated with canker scab based on its morphological and cultural characters. Three concentrations of the jatropha seeds extracts as well as that of argel leaves (25%, 50% and 100 %) were used in addition to control. The assessment of their inhibitory effect against the pathogen was expressed as fungal growth inhibition percentage. The results obtained showed that all concentrations of the two higher plants (25%, 50% and 100 %) reduced significantly (P