Aggregate composition and stability of structural aggregates of pseudogley in south Macva [Serbia]
2008
Dugonjic, M., High School of Agronomy, Sabac (Serbia) | Djordjevic, A., University of Belgrade, Belgrade - Zemun (Serbia). Faculty of Agriculture | Cupac, S., University of Belgrade, Belgrade - Zemun (Serbia). Faculty of Agriculture | Tomic, Z., University of Belgrade, Belgrade - Zemun (Serbia). Faculty of Agriculture
Aggregate composition and the stability of structural aggregates were researched in field variety on lowland pseudogley in South Macva (Serbia), as the most widely distributed soil in the region. The study results of the aggregate distribution and stability of structural aggregates, taking into account all depths of the analyzed profiles, show that the humus-topsoil (Ahp) horizon, being the most important for plant production, had the most suitable aggregate composition, but simultaneously also the lowest aggregate stability in water. The content of agronomically most favourable aggregates (0.25-10 mm) in Ahp horizon accounted for 81.43-88.44% (average 84.71%). The dominant aggregate sizes in the aggregate mass were between 1 and 5 mm, with the percentage of 34.35-53.67%. Simultaneously, Ahp horizon had the lowest stability of structural aggregates. The content of water stable microaggregates less than 0.25 mm in this horizon ranged from 34.94-71.30%. The content of water stable aggregates greater than 0.25 mm in Ahp horizon ranged from 28.70 to 65.06% (average 51.86%). The coarser aggregates greater than 1 mm, especially those greater than 3 mm (0.36-2.82%) had the lowest stability in the aggregate mass.
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