Carbohydrates in hot water extracts of soil aggregates as influenced by long-term management
| Autor: | Lene Vognsen, Kasia Debosz, Rodrigo Labouriau |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Debosz, K, Vognsen, L & Labouriau, R 2002, ' Carbohydrates in hot water extracts of soil aggregates as influenced by long-term management ', Communication in Soil Science and Plant analysis, vol. 33, pp. 623-634 . Aarhus University |
| Popis: | 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 management practices were used. Three treatments from the >100 year Askov long-term field experiment were used to show results of contrasting fertilization on soil carbohydrate content. These were all grown to a four-course crop rotation. Total carbohydrate conte... |
| Databáze: | OpenAIRE |
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