ABSTRACT The experiment about the effect of time application of SP36 on yield of some varieties of bitter gourd (Momordica charantia L.) had been done since August 10th until October 31th, 2003 in Sirat Village, Mungkid District, Magelang Regency. The altitude is 350 m. The kind of soil is regosol with pH 6,5. The method of experiment is split plot (3x3) with randomized completeā¦