The effect of mineral N fertiliser and sewage sludge on yield and nitrogen efficiency of silage maize

J. Černý, J. Balík, M. Kulhánek, F. Vašák, L. Peklová and O. Sedlář
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J. Černý: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
J. Balík: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
M. Kulhánek: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
F. Vašák: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
L. Peklová: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
O. Sedlář: Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic

Plant, Soil and Environment, 2012, vol. 58, issue 2, 76-83

Abstract: A field experiment was conducted on a chernozem soil to estimate fertiliser N efficiency of silage maize (Zea mays L.) by the difference method as influenced by the type of N fertiliser (mineral-MF vs. sewage sludge-SS), and N rate. Eight N treatments were included (0, 60, 120, 180, and 240 kg N/ha prior to maize sowing, 60 kg N/ha at planting in MF; 120, and 240 kg N/ha in SS. The average dry mater (DM) yields were 11.2-14.8 t/ha. Average nitrogen uptakes were 88-185 kg N/ha, when the average N contents in DM were 0.8-1.25%. Nitrogen utilization efficiency (NUE) was a relatively stable value for treatments with MF. The best use of nitrogen from MF was reached by 60 and 120 kg/ha N doses. The average values of recovery efficiency of applied N (REN) were calculated as 41-57%. The use of SS increased the yield of silage maize by 19-25% compared to control, above all first and second year after their application. Mineral-fertilizer-N equivalents (MFE) for SS were calculated as 55 and 64%.

Keywords: long-term field experiment; maize yield; nitrogen; N agronomic efficiency; N recovery efficiency; N uptake; N utilization efficiency (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:58:y:2012:i:2:id:538-2011-pse

DOI: 10.17221/538/2011-PSE

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