ABSTRACT An experiment about the effect of Trichoderma sp. dose on some cabbage variety seedling (Brassica oleracea), had been done since August 12th until September 12th, 2003 in Lempuyang Village, Candiroto District, Temanggung Regency. The altitude is 650 m above sea level and soil kind is latosol. The method of experiment is factorial (4x3) with completely randomized design and three repli…