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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


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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Toto dielo je publikované pod/This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Licence.