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| Schuler, Christiana; Raupp, Joachim; George, Eckhard. |
| Humus formation is thought to depend directly on carbon input. Referring to earlier studies we tested the role of amino-bound nitrogen (amino-N) input to the soil using data of 10 long-term experiments with different fertilization and crop rotation treatments. In 8 out of the 10 experiments there was a significant positive correlation between the amino-N input and soil total N content. This correlation was much stronger than the one of total N input and soil N content, indicating that amino-N was more important for soil N accumulation than total N input. Amino-N from farmyard manure seems to be more effective in this respect than amino-N from other organic fertilizers. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Soil biology; Soil quality. |
| Ano: 2008 |
URL: http://orgprints.org/11910/1/Schuler_11910_ed[1].doc |
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| Perner, Henrike; Schwarz, Dietmar; George, Eckhard. |
| Organic horticultural production systems often are characterized by the use of beneficial soil microorganisms because the application of soluble inorganic P or N fertilizers is not endorsed. Due to the limited supply of soluble nutrients in organic production systems, nutrient deficiency may limit plant growth and yield. The sole use of peat for pot-based cultures is also discouraged in organic production systems. Therefore, we have studied viable alternatives for highly soluble fertilizers and pure peat substrates using leek [Allium ampeloprasum L. var. Porrum] as a test plant. Plants were grown on peat-based substrates with different rates of compost additions, and with and without inoculation with arbuscular mycorrhizal (AM) fungi. Inoculation with a... |
| Tipo: Journal paper |
Palavras-chave: Composting and manuring. |
| Ano: 2006 |
URL: http://orgprints.org/15387/1/Perner%2Detal%2D2006%2DHortScience.41_p628%2D632.pdf |
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