This research is to study about the effect of TSP and dung dose on yield sun flowers (Helianthus annuus). The research is located at Bumirejo village , Mungkid district, Magelang regency conducted in February 18, until June 19, 1999. Kind of soil is lathosol type in altitude of 310 meters and the soil pH 6. The research uses factorial design in randomized completely block design with two fa…