Author(s): Pavol Slamka, Johana Jakabovičová, Otto Ložek, Roman Récky
Title: Agronomic Efficiency and Economic Effectiveness of Mineral Nitrogen Fertilizers in Winter
Source: International Scientific Days 2018 :: Towards Productive, Sustainable and Resilient Global Agriculture and Food Systems :: Proceedings
ISBN: 978-80-7598-180-6
DOI: https://doi.org/10.15414/isd2018.s4.20
Publisher: Wolters Kluwer ČR, Prague
PY, pages: 2018, 1144-1153
Published on-line: 2018-11-09
Language: eng
Abstract: The paper deals with the assessment of agronomic and economic efficiency of winter wheat fertilization with mineral nitrogen fertilizers. The nitrogen dose for basic and
regenerative fertilization was determined on the basis of soil analysis. Due to the higher Nmin content in the soil than 60 kg.ha-1, basic pre-seeding nitrogen fertilization in individual experimental
years was omitted. Nitrogen and phosphorus dosages for production and qualitative fertilization were determined on the basis of the plant analysis, i.e. based on the total nitrogen and phosphorus content
of the aboveground plant mass and the dry weight of 100 plants. Regenerative fertilization was carried out in the phase DC 25, liquid fertilizers were used for production fertilization in the phase DC 30
and qualitative fertilization (DC 59). Each fertilization treatment was repeated four times with a plot area of 10 m2. The efficiency of winter wheat fertilization was assessed on the basis of the calculated
coefficient of economic effectiveness (KEE), the profitability of fertilization and the profit (Z) per hectare due to applied nutrition. The purchase price for winter wheat and for fertilizers valid for the
given experimental year was used for the calculation.
Keywords: optimization of fertilization, grain yield, coefficient of economic effectiveness, profit, growth phases
JEL Classification: Q19
Rights:Open Access :: Creative Commons BY-NC-SA 4.0 International Licence
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