Heavy skiing at the late winter often injures the vegetation cover and even the top soil of the course. A fast recovery during the vegetation period is necessary in order to avoid further damages. Therefore, this trial was investigated to find out the influence of PK- and NPK - fertilization on the vegetation of a steep skiing course at the Bavarian Alps in the southern part of Germany during the period from 1981 to 1983. 1. The regeneration of the living plants cover was clearly improved by fertilization. The mean percentage of vegetation cover with PK - fertilization was a little higher than that of NPK-application. However, the regeneration of the grass cover with NPK-fertilization was much more rapid than that of PK-fertilization on the skiing eroded plots. 2. Vegetational succession on the skiing eroded plots was much more influenced by the NPK-application than PK-fertilization. As the species of Agrostis tennis, Dactylis glomerata and Trifolium repens were strong the absorptive ability of nutritive substance, they increased by the fertilization distinctly. On the other hand the plant species of Carer ferruginea, Carex flacca, Milium effusum, Melica nutans and Mercurialis perennis decreased due to PK-and NPK-fertilization gradually. 3. The fodder value of the vegetations on the eroded plots was greatly increased by NPK-fertilization, furthermore those highly evaluated grasslands due to change of positive direction in botanical composition.