Determining the Amount of Total Nitrogen, Total Organic Carbon and C:N Ratio for Eight Blueberry Plantations from Northwest Region of Development

Amalia Ioana Boţ, Ioan Păcurar, Lech Szajdak, Sanda Roșca, Horea Păcurar, Viorela Codruța Pleșa


The Northwest Region of Development is one of the most well developed regions in Romania, due to his high economic value, given by the strategic position between the east part of Europe and Asia and the west part of Europe and also because of the well-developed urban areas. Also, we can find here a major developing in agriculture, because of the numerous types of soils met and the variety of relief units. Nowadays, the increased interest of farmers in cultivating blueberry (Vaccinium corymbosum) contributes to the sustainable development of territory. The eight plantation studied have shown differences when comparing the amount of different compounds in soil, such as total organic carbon and total nitrogen. For example, for A samples, the values of total organic carbon where higher in Zimbor (33.9 g/kg), Mărișel (37.6 g/kg) and Șintereag (2.3 g/kg) and for B samples in Cetariu (13.2 g/kg), Mărișel (52 g/kg) and Ardud (27.2 g/kg). The amount of total nitrogen was higher in two plantation, Șintereag and Mările, for both A and B samples (Șintereag A-1.6 g/kg and B-2.2 g/kg and Mărișel A-1.7 g/kg and B-2.4 g/kg). The higher amount of total organic carbon could indicate that the type of soils identified for those plantation give better conditions for microorganism in the process of transformation of organic matter. Smaller differences were found in plantations that have the same type of soil, meaning that the bio-chemical processes in soil met the same conditions, pH also playing a key role in this aspect. 


fertility, bio-chemical compounds, plant nutrition, qualitative variations

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