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vol. 8, nr. 1 (2006)
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Effect of crops cultivated in crop rotation system
on biological activity of soil
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Andrzej I. Wyczółkowski, Monika Wyczółkowska, Małgorzata Dąbek-Szreniawska
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Institute of Agrophysics, Polish Academy of Science, ul. Doświadczalna 4, 20-290 Lublin |
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vol. 8 (2006), nr. 1,
pp. 275-284
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abstract:
The highest ammonification activity, demonstrated by the presence of accumulated ammonium nitrogen, was observed in summer for all crops, and the lowest – in spring for grains. Dehydrogenase activity was similar for potato, barley and wheat cultures, with highest levels in spring, decreasing during the intensive growth period, and lowest after harvest. For clover, the highest activity was detected in the intensive growth phase. Actual CO2 release values, increasing together with crop growth and reaching a maximum after harvest, were similar for all plants. Potential CO2 release, stimulated by carbon, or carbon and nitrogen source supplementation, was dependent on the source type and the type of crop.
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keywords:
crop rotation, CO2 release, organic nitrogen mineralization
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original in:
Polish
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