Christoph Ochsenbein, an extension officer in Cameroon, requested seeds of Moringa oleifera because he had read they could be used to control damping off. An anonymous, unpublished Filipino handbook is cited as the source. It claims that moringa leaves are worked into the soil one week before sowing.This time is sufficient to release the effective substances into the soil. This seems feasible because antibiotic substances are known to be in parts of the moringa tree (EDN 374). The main use is protecting seedlings in seedbeds.
ECHO Staff 1993. Moringa Leaves to Prevent Damping Off Disease of Seedlings. ECHO Development Notes no. 42