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| Registros recuperados: 24 | |
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| Hovmøller, M.S.; Thomsen, I.; Kristensen, K.; Østergård, H.. |
| Bladsygdomme kan være et væsentligt problem både i konventionel og økologisk dyrkning af vårbyg. Der er gode muligheder for at forebygge bladsygdomme ved korrekt sortsvalg, såfremt man lægger vægt på sortens (eller sortsblandingens) resistensegenskaber. Det er således afgørende at kende sortens resistens mod specielt de sygdomme, som har størst sandsynlighed for, baseret på den enkeltes erfaringer, at kunne blive et problem. Udover sortsegenskaber vil sygdomsniveauet for den enkelte sygdom i den enkelte mark afhænge af det lokale smittetryk i begyndelsen af vækstsæsonen, jordens næringsstofbalance- og frigivelse, mikrobiel aktivitet samt vind og vejr. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2006 |
URL: http://orgprints.org/7910/1/7910.pdf |
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| Thomsen, I.K.; Schjønning, P.; Jensen, B.; Kristensen, K.; Christensen, B.T.. |
| To evaluate the effect of soil texture and soil water content on decomposition of organic carbon (OC), turnover of partially stabilized 14C-labelled ryegrass residues was studied at four matric potentials in twelve differently textured soils of similar origin and cropping history. Six soils were from a naturally occurring clay gradient and had 11, 16, 21, 31, 37 and 45% clay (termed NA1 to NA6). Three clay-amended soils (CL2, CL4, CL6) and three silt-amended soils (SI2, SI4, SI6) were prepared by adding clay or silt sized organomineral complexes extracted from the NA2 soil to a portion of the NA1 soil. After 14C-labelled ryegrass had decomposed for eight months under field-like conditions, soil cores were sampled, adjusted to four matric potentials (-30,... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Soil quality; Soil biology. |
| Ano: 1999 |
URL: http://orgprints.org/727/1/geoderma_99_II.pdf |
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| Backes, G.; Kristensen, K.; Østergård, H.. |
| In context of a larger project dealing with the traits of barley that are related to organic farming (BAR-OF), we performed an association mapping in order to dertermine the genetic loci linked with the respective traits. In two subsequent years (2002 and 2003), we used field results from 96 barley lines and varieties, partially overlapping between the years. The lines/varieties were grown on three Dansih locations (Flakkebjerg, Foulum and Jyndevad). For Foulum and Flakkebjerg, we observed both fields grown under organic and conventional regime; for Jyndevad only fields cultivated under organic conditions were ecploited. Neither in the organic nor in the conventional fields; diseases were controlled chemically. In the resulting five environments per year,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2007 |
URL: http://orgprints.org/21774/7/21774.pdf |
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| Eriksen, J.; Askegaard, M.; Kristensen, K.. |
| Four management systems combining high and low livestock densities (0.7 and 1.4 LU ha-1) and different types of organic manure (slurry and straw based FYM) were applied to an organic dairy crop rotation (barley [undersown] – grass-clover – grass-clover – barley/pea – oats – fodder beet) between 1998 and 2001. The effects of the management systems on crop yields and nitrate leaching were measured. In all four years nitrate leaching, as determined using ceramic suction cups, was higher in the three crops following ploughing of grass-clover than under the barley or grass-clover. Overall, no significant differences in nitrate leaching were observed between the management systems. However, the replacement of the winter wheat crop used in the earlier... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover. |
| Ano: 2004 |
URL: http://orgprints.org/1824/1/paper.doc |
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| Registros recuperados: 24 | |
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