Influence of injection nitrogen fertilization on yield and seed composition of winter oilseed rape (Brassica napus L.)

L. Peklová, J. Balík, O. Kozlovský, O. Sedlář and K. Kubešová
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L. Peklová: Department of Agro-environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources Prague, Czech University of Life Sciences Prague, Prague, Czech Republic
J. Balík: Department of Agro-environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources Prague, Czech University of Life Sciences Prague, Prague, Czech Republic
O. Kozlovský: Department of Agro-environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources Prague, Czech University of Life Sciences Prague, Prague, Czech Republic
O. Sedlář: Department of Agro-environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources Prague, Czech University of Life Sciences Prague, Prague, Czech Republic
K. Kubešová: Department of Agro-environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources Prague, Czech University of Life Sciences Prague, Prague, Czech Republic

Plant, Soil and Environment, 2012, vol. 58, issue 11, 508-513

Abstract: Influence of the nitrogen injection fertilization 'controlled uptake long term ammonium nutrition' (CULTAN) on winter rape yield and seed composition was studied in 2009 and 2010 at two sites with different soil-climatic conditions in the Czech Republic. Two conventional treatments consisted of fertilization using the system of divided doses applied on soil surface. Two CULTAN treatments used injection fertilization with the whole dose of nitrogen applied once in the vegetation period, in early spring at the BBCH 26 stage (6 side shoots detectable). The trial compared conventional and CULTAN treatments. The overall dose of nitrogen was 200 kg N/ha in each treatment. The seed yield in a two-year average was 4.83 t/ha at conventional and 4.80 t/ha at the CULTAN treatment. This difference was not statistically significant. The higher nitrogen content in seed was recorded mainly at CULTAN treatments at the Hněvčeves site in 2009. An inconclusively higher phosphorus content was recorded in winter rape seed fertilized with the CULTAN method at both sites in 2010. Content of K, Ca, Mg and S did not show statistically significant differences between the two treatments during both experimental years. In oiliness no differences between conventional and CULTAN methods were observed.

Keywords: ammonium nitrogen; winter rape; injection; macroelements; oiliness (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:58:y:2012:i:11:id:455-2012-pse

DOI: 10.17221/455/2012-PSE

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