Sesame is an extensively grown food plant producing both edible seeds and oils. Various parts of the plant are used as pesticides. Sesame oil may be used as an insecticide with suffocating and synergistic modes of action. Ground sesame stalks, sesame chaff, and the sesame cake that is a by-product of oil manufacturing are either mixed into soil before planting or applied as a mulch around growing plants to control harmful nematodes.