PT  - JOURNAL ARTICLE
AU  - Tyburski, Józef
AU  - Sienkiewicz, Stanisław
TI  - Effect of long term organic and conventional fertilization method on chosen soil chemical properties
DP  - 2014 Aug 6
TA  - Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
PG  - 383--390
VI  - 58
IP  - 5
AID - 10.11118/actaun201058050383
IS  - 12118516
AB  - The aim of the study was to compare a long term effect of oppositional fertilization methods, organic vs. conventional, on chosen soil chemical properties. Soil samples were collected from organic farms with at least 10-years history of organic management and from neighboring conventional farms. In total soil samples from 66 farms distributed all over Poland were collected. The following properties were analyzed: organic carbon (C<sub>org</sub>), total nitrogen (N<sub>tot</sub>), pH, exchangeable forms of P, K and Mg.In general organic management resulted in slightly higher soil pH. Bigger differences were found in case of C and N content. Thanks to organic fertilization method in loamy and clay soils C content was higher by 13.5% and N content was higher by 20.3%. The same tendency, although not so marked, was found on sandy soils.Conventional fertilization resulted in higher content of exchangeable P, especially on sandy soils. Almost the same content of exchangeable K was found on both farm types. Higher amounts of exchangeable Mg was found on organic farms on each soil type: sandy, loamy and clay. In the same time bigger disproportions of Mg content were found on organic farms (30-112 mg Mg kg<sup>-1</sup>) than on conventional farms (30-87 mg Mg kg<sup>-1</sup>).