Plantago lanceolata is one of the most common and most valuable dicotyledonous pasture herbs found on meadows and pastures. The aim of this study was to compare the impact of Plantago lanceolata on yields and quality of twice harvested semi-natural meadow swards utilized according to agri-environment programme guidelines (P10b variant), as well as on pastures established using mixtures containing Plantago lanceolata. On studied meadows, presence of Plantago lanceolata in amounts exceeding 3% of the total yield could be seen as an indicator of negative changes in humidity and tropism, causing a reduction in dry mass yields and the deterioration of sward quality after the first harvest. Meanwhile, yields from pastures containing Plantago lanceolata were almost four times higher. Furthermore, Plantago lanceolata ingested by cows contained more protein, sugars and crude ash including calcium and phosphorus while containing less fiber than Dactylis glomerata and Lolium perenne. Furthermore, Plantago lanceolata was more abundant than Trifolium repens, also included in the sowing mixture.

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