Soil fertility changes trends and available Fe, Mn and Zn in a long-term system user nitrogen fertilizers — IJAAR
Nebojsa Gudzic, Miroljub Aksic, Aleksandar Djikic, Slavisa Gudzic, Jasmina Knezevic, Miodrag Jelić
University of Pristina, Faculty of Agriculture, Kopaonicka bb, Lesak, Serbia
Key words: Vertisol, Long-term fertilization, Nitrogen fertilizers, Fe, Mn, Zn.
Among other things, the status of soil fertility can be affected by long-term fertilization and intensive cultivation of crops. Application of inorganic fertilizers can maintain or improve crop yields, but it can also cause changes in the chemical, physical and biological properties of the soil, both directly and indirectly. This study was conducted to determine the effects of the long-term application (33 years) of two rate N (80 and 120 kg ha-1), individually and in combination with P and K, on soil fertility (pH, organic matter, total N, available P and K) and content available Fe, Mn and Zn, at the Vertisol soil tipe in the Central Serbia, Kragujevac.
Vertisol at the beginning of the study was characterized by acidic pH, low content of available phosphorus, medium content organic matter, and high content of available potassium. Continuous application of nitrogen fertilizers has contributed to changes in some parameters of Vertisols fertility. Acidity, organic matter and total N in all variants of fertilization compared to the control was very significantly increased (p > 0.01). The content of an available Fe, Mn and Zn in all variants in which fertilizers have been applied, have expressed a tendency of increase.
Get the original articles in Source: Volume 7, Number 2, August 2015 — IJAAR
Published By: International Network for Natural Sciences