Distribution and dynamics of NO3-N in maize-wheat based cropping system | Distribucija i dinamika NO3-N u sistemu ratarenja kukuruz-psenica
2009
Seremesic, S. | Bogdanovic, D. | Milosev, D. | Marinkovic, B. | Latkovic, D. | Jacimovic, G., Poljoprivredni fakultet, Novi Sad (Serbia). Departman za ratarstvo i povrtarstvo
The objective of this study was to investigate influence of the crop rotation and fertilization on vertical distribution and dynamic of NO3-N. The present study was performed on a long-term crop rotation trial that is being carried out at the Rimski Sancevi Experimental Field of the Institute of Field and Vegetable Crops in Novi Sad (Serbia). The study treatments were as follows: fertilized two-field crop rotation (maize-wheat) established 1969/70 and unfertilized two-field crop rotation (maize-wheat) established 1946/47. Obtained result showed that in unfertilized two-year rotation condition for mineralization had the most dominant effects on distribution and dynamics of NO3-N. However, in the fertilized rotation NO3-N dynamic and distribution was result of mineral N application, plant assimilation and mineralization. Mineralization was higher in April and May. Without addition of nitrogen potential NO3-N released from the mineralization is not sufficient for achievement of high yield.
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