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2012, vol. 17, iss. 34, pp. 127-134
Nitrogen fertilizers and soil fertility
aUniversity of Kragujevac, Faculty of Agronomy, Čačak
bInstitute for Vegetable Crops, Smederevska Palanka
Soil fertility is of the most importance in organizing successful plant production and gaining high yield. Protection and preservation of soil fertility are of a high relevance in contemporary agriculture, since inadequate production technology and particularly the application of high doses of fertilizers very often leads to degradation processes and soil damage. The most common mistake is the overdose of nitrogen fertilizers. Therefore, in order to research the changes of basic agro-chemical traits of soil, the increased doses of nitrogen in carrot growing have been researched. The experimental part of the research was performed on sandy loam cambisol, with the following applications of nitrogen: 0, 60, 120 and 180 kgN/ha through KAN fertilizer. After carrot harvesting, the content of humus, phosphorus and potassium decreased, while the content of nitrate nitrogen was directly dependent of growing nitrogen doses. The lowest average content of NO3-N was determined in control (24.7 mg/kg), and the highest by applying 180 kgN/ha (47.0 mg/kg).
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article language: English
document type: Original Scientific Paper
published in SCIndeks: 22/03/2013

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