Abstract
In this study the effect of N, P and K nutrients on the Cu and Fe content of winter wheat (Triticum aestivum L.) grains was investigated in a long-term fertilization experiment set up in Nagyhörcsök. Samples were also harvested from four experimental stations of the Hungarian national long-term fertilization trials. These are the following: Bicsérd, Iregszemcse, Karcag, and Putnok. Plant samples were collected in 2005 which was very wet. Our results from Nagyhörcsök were compared with the Cu and Fe content of samples which were harvested from control plots of other experimental stations. The Cu and Fe content of grain samples were measured using inductively coupled plasma mass spectrometer (ICP-MS) followed by digestion with HNO3-H2O2 solution. All data were subjected to ANOVA, and when significant differences (P<0.05) were detected, Duncan’s test was performed to allow separation of means.
 The main conclusions are as follows: Cu and Fe content of wheat grains was higher and higher in every NPK treatments. Samples were harvested from the control plots of Iregszemcse and Bicsérd have higher Cu content than the treated samples from Nagyhörcsök.
Highlights
grains was investigated in a long-term fertilization experiment set up
Samples were also harvested from four experimental stations of the Hungarian national long-term fertilization trials
very wet. Our results from Nagyhörcsök were compared with the Cu
Summary
In this study the effect of N, P and K nutrients on the Cu and Fe content of winter wheat (Triticum aestivum L.) grains was investigated in a long-term fertilization experiment set up in Nagyhörcsök. Samples were harvested from four experimental stations of the Hungarian national long-term fertilization trials. These are the following: Bicsérd, Iregszemcse, Karcag, and Putnok. Az őszi búza vetésterülete 1,0–1,2 millió hektár között változik hazánkban (Pepó, 2007). Az Egyesült Királyságban végzett vizsgálatok szerint 19 és 64 év közötti felnőttek táplálkozásában a gabonafélék és a belőlük készült termékek a napi ásványielem felvétel 44%-át adták a Fe, míg 31%-át a Cu esetében (Henderson et al, 2003). Az őszi búza termesztéstechnológiája során az egyik legfontosabb, legkritikusabb tényező a tápanyagellátás, trágyázás (Pepó, 2004). Kádár (2000b) őszi árpával végzett vizsgálataiban karbonátos csernozjom talajon N-túlsúlyban a N-kontrollhoz képest növekedés következett be a Fe és a Cu esetében.
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