Acta Univ. Agric. Silvic. Mendelianae Brun. 2009, 57, 13-24
Published online 2014-10-14

Long – term evalutation of the organic matter balance and its relations to the organic C content in the topsoils in Ústí nad Orlicí district

Jiří Dostál1, Dana Cerhanová2, Lenka Hajzlerová1, Jana Martincová1, Petra Pospíšilová1, Eduard Pokorný3, Tomáš Lošák3

1AGROEKO Žamberk, Ltd., Zemědělská 1004, 564 01 Žamberk, Česká republika
2Výzkumný ústav rostlinné výroby, Drnovská 507, 161 06 Praha 6, Česká republika
3Ústav agrochemie, půdoznalství, mikrobiologie a výživy rostlin, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

Organic matter balance in the farms located in Ústí nad Orlicí district has been investigated since 1979. As a result, so called need of organic fertilisation, has been determined and the supply of the organic fertilisers to soils, e.g. farmyard manure, slurries and also straw and green manure has been monitored over the whole time period. About 45 % of the arable land area in the district has been monitored.
In addition to the organic matter balance, we determined several soil organic matter characteristics in soil samples (organic C, N and S contents, inert and decomposable C content, hot water soluble C content, hydrophobicity index calculated from the DRIFT spectrometry, available P, K, Ca and Mg contents and pH).
The relationships between the organic matter supply with supplemental sources organic fertilisers and all the selected soil organic matter characteristics were statistically significant. Significant correlations were also found for the relationships between the organic matter need and all the selected soil organic matter characteristics.


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