ABSTRACT The research, which entitled "The effect of concentration and interval spraying of gemari fertilizer on yield of garlic (Allium sativum L.)", was done in the village of Kalegen, sub district Bandongan Magelang, Central Java, at 700 metre altitude, at Latosol soil, conducted from early in May 89 to beginning September 89. The experiment was use in a Randomized Complete Block Design…