In the diet strategy both on the global level as well as in our country the potato is considered to be one of the most important cultivated grades. It is a complex food stuff with dietary properties being rich in vitamins and mineral salts. The great diversity of the products obtained from the potatoes ensures the superior valorifying of the entire production and the rhythmical supplying for the population during the entire year. The consumers’ request for the potatoes varies from one country to another and even from one area to another. In the last years in the national data base of grades there has been subscribed as a total figure over 30 local or foreign grades from which due to a natural selection imposed by the producer and consumer’s markets there have been noticed as to be detached by far from the others three grades accepted and agreeable for everyone. According to these there have been taken for analysis the following grades of potatoes: Ostara for the early and summer using, Kondor for the summer and autumn using, Désirée and Santé for the autumn and winter using.
Taking into account the data obtained by using the Stohmann method on the four grades of potatoes studied we can conclude that the starch and dry substance values differ from one grade to another.