ABSTRACT A research concerning the influence of kinds of organic substance and kinds of mulch on yield of tomato crop (Lycopersicum Esculentum, Mill) had been done in Wringin Putih, Subdistrict Borobudur, Regency Magelang, Province of Central Java. The type of soil is regosol by pH 6 and altitude 420 meters. The research uses the factorial experiment method (4 x 3) with ran…