Effect of long-term fertilization on the organic phosphorus in a calcareous chernozem soil
1998
Blagojevic, S. | Zarkovic, B. (University of Belgrade, Belgrade (Yugoslavia). Faculty of Agriculture)
The purpose of the present paper was to ddetermine the influence of long-term application of mineral and organic fertilizers (beef manure and cornstals) on the organic phosphorus status of a calcareous chernozem soil. Soil samples were taken from an experimental field of the Maize Research Institute in Zemun Polje (Belgrade), Yugoslavia. Organic phosphorus fractions were determined according to their activity in the P cycle. The obtained results indicate that the increases of the labile fraction are statistically significant only in the treatments where mineral fertilizers were applied together with beef manure. Significant influence on content of the moderately labile fraction was expressed in all treatments where beef manure had been applied. Long-term fertilization did not exert significant influence on the resistant and moderately resistant fraction of soil organic phosphorus.
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