Botanical composition of pasture sward influenced by intensity of utilisation and mineral fertilisation

摘要

A long-term pratotechnical trial was established in 2003 on permanent grassland sites in the Rapotin locality. The trial consisted of six treatments with different grazing management (intensity of utilisation and fertilisation). The botanical composition of the swards before the first grazing period was evaluated by means of the projective dominance method. The botanical composition was influenced by time and different management, which explained about 23% of the variability of the botanical composition. Species richness was significantly influenced (P < 0.05), mainly by the intensity of utilisation, with increasing intensity of utilisation reducing the total number of species (from 24 to 15 species).