Microbiological activity in pasture soil
Kresovic, M.(University of Belgrade, Belgrade - Zemun (Serbia and Montenegro). Faculty of Agriculture) | Raicevic, V.(University of Belgrade, Belgrade - Zemun (Serbia and Montengro). Faculty of Agriculture, Department of Plant Agrochemistry and Physiology))
The paper deals with microbiological activity in natural pasture with ranker soil used in long-term experiment with no crop rotation. The purpose of this research was to observe the results of increased introduction of nitrogen fertilizer. Regarding microbiological characteristics, the number of certain systemic and physiological microorganism groups, dehydrogenase activity, and microbe biomass of C and N, were established. It was found that this soil falls into the very acid soil category (below 4 1M KCl), well provided with nitrogen, with the C/N ratio below 10 in all variants, with low presence of available phosphorus and potassium, and with highly mobile Al values. Microbiological analysis indicated that the introduction of nitrogen fertilizer influenced the presence of certain microorganism groups. The results show that abundant application of nitrogen fertilizer influences further pH level reduction in this, otherwise, acid soil, and that it also affects microbe diversity.
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