Dynamics of the soil organic matter in crop rotation and long-term monoculture
2006
Rychcik, B.,University of Warmia and Mazury, Olsztyn (Poland) | Adamiak, J.,University of Warmia and Mazury, Olsztyn (Poland) | Wojciak, H.,University of Warmia and Mazury, Olsztyn (Poland)
A field experiment focused on the response of the most important plants cultivated in Poland to monocultural cultivation has been carried out since 1967. Experimental plots were located on Luvisols formed from silty light loam. Twelve plants species were cultivated in monocultures and crop rotations as follows: A) potato - oats - flax - winter rye - faba bean - winter triticale; B) sugar beet - maize - spring barley - pea - winter rape - winter wheat. Humus fractions were determined by the Duchaufour and Jacquin method. A slight increase in the concentration of organic matter was observed in both crop rotations and most monocultures. The lowest concentrations of organic C was recorded under the conditions of continuous cultivation of pea, maize and faba beans. Humins and humus compounds had a dominant share among the determined fractions. Humic acids prevailed over fulvic acids in both crop rotations and in most monocultures. However, fulvic acids were predominant in sugar beet, potato and winter rye monocultures.
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