The reason for using mineral and organic substrata with Stimusoil 200 is to make profitable the tomato crops in hothouses. These are carried out in terms of increasing physical production and incomes, on one hand, and of decreasing expenses through the removal of the infected soil, on the other hand, and also using the unconventional energy at a lower cost, ensuring in this way the necessary profit to continue the production process. The carried out researches established the crop variants with substrata in which the productive potential of the hybrid Platus F1 was performed at maximum under the present conditions in terms of quality, and also quantity. The experiment revealed the effects of application with the liquid organic fertilizer Stimusoil 200 upon various variants of nutritive substrata (mineral and organic), the assessment being also performed depending on the level of the hybrid`s productive potential.