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dc.creatorGajić, Boško
dc.creatorDjurović, Nevenka
dc.creatorDugalić, Goran
dc.date.accessioned2020-12-17T19:50:30Z
dc.date.available2020-12-17T19:50:30Z
dc.date.issued2010
dc.identifier.issn1436-8730
dc.identifier.urihttp://aspace.agrif.bg.ac.rs/handle/123456789/2313
dc.description.abstractConversion of meadow and forest ecosystems to agricultural land generally leads to changes in soil structure. This comparative study presents the composition and stability of structural aggregates in humus horizons (0-30 cm) of noncarbonate silty-clay Fluvisols in the Kolubara River Valley, W Serbia. Aggregates collected from under a native forest were compared to aggregates from meadows and arable fields which underwent crop rotation for > 100 y. The results show that size distribution and stability of structural aggregates in the humus horizons of arable soil are significantly impaired due to long-term anthropogenization. In the humus horizons, the content of the agronomically most valuable aggregates (0.25-10 mm) decreased by a factor of approximate to 2, from 68%-74% to 37%-39%, while the percentage of cloddy aggregates (>10 mm) increased by a factor of approximate to 2, from 23%-31% to 48%-62%, compared to forest aggregates The long-term-arable soil had significantly (p lt 0.05) lower aggregate stability, determined by wet sieving, than meadow and forest soils The lowest aggregate stability was found in aggregates > 3 mm. Their content is approximate to 2.5-3 times lower in arable soil (13%-16%) than in forest soil (32%-42%) at a depth of 0-20 cm. The largest mean weight diameters of dry aggregates (dMWD) with a range between 12.6 and 14 7 mm were found in arable soil, vs. 95-9 9 mm in meadow and 6 5-8.3 mm in forest. The arable soil had significantly lower mean weight diameters of wet-stable aggregates (wMWD) and a lower structure coefficient (Ks) than forest and meadow soils The dispersion ratio (DR) of arable soil was significantly higher than that of forest and meadow soils. Forest and meadow showed a significantly higher soil organic-matter content (SOM) by 74% and 39%, respectively, compared with arable soil, while meadow uses decreased the SOM content by 57% compared with forest at a depth of 0-10 cm In conclusion, the results showed that long-term conventional tillage of soils from natural forest and meadow in the lowland ecosystems of W Serbia degraded soil aggregate-size distribution and stability and reduced SOM content, probably resulting in lower productivity and reduced crop yieldsen
dc.publisherWiley-V C H Verlag Gmbh, Weinheim
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/20123/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Plant Nutrition and Soil Science
dc.subjectanthropogenizationen
dc.subjectdifferent ecosystemsen
dc.subjectdispersion ratioen
dc.subjectland-use changeen
dc.subjectmean weight diameteren
dc.subjectstructure coefficienten
dc.titleComposition and stability of soil aggregates in Fluvisols under forest, meadows, and 100 years of conventional tillageen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage509
dc.citation.issue4
dc.citation.other173(4): 502-509
dc.citation.rankM21
dc.citation.spage502
dc.citation.volume173
dc.identifier.doi10.1002/jpln.200700368
dc.identifier.scopus2-s2.0-77955745507
dc.identifier.wos000281524300003
dc.type.versionpublishedVersion


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