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Cieľom pokusu bolo zistiť dynamiku obsahu dusíka (N) v nadzemnej fytomase trávnika po hnojení rôznych foriem hnojív v bezzávlahových podmienkach. Pokus sa realizoval v teplých a suchých podmienkach Nitry (Slovenská republika). V experimente sa sledovalo 7 variantov: 1. Bez hnojenia, 2. Liadok amónny s dolomitom, superfosfát, draselná soľ, 3. Trávnikové hnojivo, 4. Pomaly pôsobiace hnojivo SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S), 5. Obaľované hnojivo DuslocoteNPK (S) 13-9-18 (+ 6S), 6. Organické hnojivo Condit (5-1-1) a 7. Organické hnojivo Veget (3-2-1). Na začiatku vegetačných sezón malo použitie obaľovaného hnojiva Duslocote mala pomalý nástup účinku. Opačný trend malo použitie organického hnojiva na obsah dusíka v nadzemnej fytomase trávnika. Koncentrácia dusíka bola štatisticky vyššia na variantoch hnojených anorganickými hnojivami a organickým hnojivom Condit (5-1-1) (33,727 mg*kg-1 – 36,737 mg*kg-1) ako na nehnojenom trávniku (28,446 mg*kg-1). Zistili sme vyššiu koncentráciu dusíka v nadzemnej fytomase po aplikácii organického hnojiva Condit (5-1-1) na trávnik ako po hnojení anorganických hnojív.The aim of this experiment was to find out dynamics of the nitrogen (N) content in aboveground phytomass on the turf after fertilization of different forms of fertilizers under non–irrigated conditions. The experiment was carried out in warm and dry conditions in the area of Nitra (Slovak Republic). There were included 7 treatments: 1. Without fertilization, 2. Saltpetre with dolomite, Superphosphate, Potassium salt, 3. Turf fertilizer 15–3–8 (+ 3MgO + 0.8Fe + 18S), 4. Slow release fertilizer SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S), 5. Controlled release fertilizer Duslocote NPK (S) 13-9-18 (+ 6S), 6. Organic fertilizer Condit (5-1-1) and 7. Organic fertilizer Veget (3-2-1). In the begging of the seasons fertilizing by controlled release fertilizer Duslocote NPK (S) 13-9-18 (+ 6S) had a slow onset of action. The opposite trend had use of organic fertilizer Condit (5-1-1) on nitrogen content in aboveground turf phytomass. The nitrogen concentration was statistically higher in variants fertilized with inorganic fertilizer and organic fertilizer Condit (5-1-1) (33,727 mg*kg-1 – 36,737 mg*kg-1) as a non-fertilized turf (28,446 mg*kg-1). Higher nitrogen content in aboveground phytomass was after application of organic fertilizer Condit (5-1-1) into the turf in comparison with fertilization inorganic fertilizers

Dynamics of the nitrogen content in aboveground phytomass on the turf after fertilization of different forms of fertilizers