The paper presents the results of 2000-2003 investigations which aimed at comparing the yielding and profitability of cultivating table potato fertilized with intercrop and straw. The experiment involved two factors: intercrop fertilization (control treatment, birdsfoot trefoil, birdsfoot trefoil + Italian ryegrass, phacelia, phacelia in a form of mulch), straw fertilization (without straw, with straw). In the first year after applying organic fertilization table potatoes were cultivated. During harvest there was determined the total yield and the commercial yield of potato tubers. There was also performed an economic evaluation of table potato cultivation under varied organic fertilization. The following were calculated: the production value, direct production costs and gross margin. The highest total and commercial yield of potato tubers was obtained from combinations fertilized with a mixture of birdsfoot trefoil with Italian ryegrass and birdsfoot trefoil with straw. The lowest direct production costs were incurred for potato fertilization with phacelia in a from of mulch, birdsfoot trefoil and a mixture of birdsfoot trefoil with Italian ryegrass. The best production and economic results were recorded due to the fertilization of table potato with a mixture of birdsfoot trefoil with Italian ryegrass and birdsfoot trefoil with straw.

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