Dynamics of organic carbon content in soil depending on long-term fertilization and crop rotation
2005
Mercik, S. | Stepien, M. | Stepien, W. | Sosulski, T.,Szkola Glowna Gospodarstwa Wiejskiego, Warszawa (Poland). Katedra Nauk o Srodowisku Glebowym
The long-term fertilization experiments with differentiated mineral fertilizing, manuring and crop rotation have been continously conducted since 1923. The soil was sampled from chosen fertilizer treatments of these experiments in various years since 1974. The air-dried soil samples were stored. The samples of soil were gathered from the same plots (about 50 square m) for period of 5-28 years. Organic carbon was determined by dry combustion. Hot water soluble organic carbon and CO2 relase dynamics after 7 or 35 days were determined. In the period between 1974 and 2002, an increase in organic carbon content in soil was observed in CaPK fertilized treatments even if the yields were very low
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