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The biological export of nutrient elements – N, P and K by the yield of garden peas cvs. Iskar, Pulpudeva, Mira, Vjatovo, Wolf, Skinado and Undine in the course of three years on meadow slightly solonzate soil was studied.
The quality of nutrient substances taken up from the soil depended on the cultivar and in the case of an yield of fruits from 9510 to 12560 kg/ha varied within the range of 155,2-204,2 kg/ha N; 38,0-60,0 kg/ha P205 and 93,7-139,9 kg/ha K20. Highest quantity of nitrogen were taken up by cv. Mira, phosphorus – by cv. Vjatovo and potassiun – by cv. Skinado.
An average of 16,33 kg N, 4,65 kg P205 and 10,88 kg K20 were necessary for the formation of 1t production by the cultivars studied.