Analysis of the soil in which parsley plants were grown shown,that the T-GRAN was a very good substrate for maintaining the population of Trichoderma in this environment. The amount of propagules of the fungi in the treatments with the addition ofT-GRAN + Trichoderma was higher comparing to the treatments without granulates, with fungi only (Table 4). At the end of the experiment the level of T. harzianum TRS 59 strain in the treat-ment with granulates was about 10 times higher than in the soil without T-GRAN, with T. harzianum TRS 59 added as a spores