|
|
|
|
|
| Debosz, K.; Vognsen, L.; Laborioau, R.. |
| Microbial carbohydrates are immediate by-products of microbial metabolism and play an important role in the formation and stabilization of soil structure. The effect of long-term management on soil carbohydrate content and monosaccharide composition was investigated in five. Danish sandy loams under organic and conventional management with animal manure and mineral fertilizers. Hot-water (80°C)extraction was used to measure the distribution and composition of carbohydrates in aggregate size. Carbohydrates released to hot water were determined after hydrolysis as reducing sugars equivalent to glucose. The monosaccharide composition in hot-water extracts was analyzed as the corresponding alditol acetates. Sites with a history of long-term continuos... |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2002 |
URL: http://orgprints.org/21005/1/21005.pdf |
| |
|
| |
|
|
| Hoffmann, C.C.; Jakobsen, O.S.; Nielsen, L.; Debosz, K.. |
| På engene ved Fussingø Hovedgård blev der i 1997-2001 gennemført en tværfaglig undersøgelse af forskellige græsmarksstrategier, som afgræsning, slæt eller driftsophør, ud fra ønsket om at kunne øge naturkvaliteten under miljøvenlig græsmarksdrift og samtidig forbedre landbrugsproduktionen under sådanne forhold. Med henblik på at få en generel beskrivelse af engarealerne er der indsamlet nøgledata vedrørende geologi, afstrømningsforhold, arealernes driftshistorie, klima, hydrologi og vegetationen på arealerne. Der er benyttet en kombination af ældre beskrivelser og nye registreringer. Engområdet er beliggende i en tunneldal, som stort set følger Skals å forløbet. Der er tørveaflejringer med mindre lag af ler og kalkgytje indlejret lokalt. I den øverste... |
| Tipo: Report chapter |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2003 |
URL: http://orgprints.org/4284/1/4284.pdf |
| |
|
|
| Elmholt, S.; Schjønning, P.; Munkholm, L.J.; Debosz, K.. |
| In order to improve our understanding of soil aggregation, we have studied the relative importance of bonding and binding mechanisms, especially how they scale according to aggregate size and how they are influenced by farming system and different management options. Topsoil samples were collected from four arable sandy loam soils found as two pairs (FP1 and FP2) of neighbouring fields. One of the fields in FP2 had been grown for decades with annual cash crops without application of organic manures, while the other three fields had been managed with diversified crop rotations and manure dressings. Aggregates were segregated from the bulk soil by promoting brittle failure. The samples of soil structural units were fractionated to 4-8 mm, 0.5-1 mm and... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions; Soil biology; Soil quality. |
| Ano: 2008 |
URL: http://orgprints.org/14642/1/Geoderma_2008_TwoPairs.pdf |
| |
|
|
|
