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| Registros recuperados: 12 | |
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| Frøseth, Randi Berland; Bakken, Anne Kjersti; Bleken, Marina Azzaroli; Riley, Hugh; Pommeresche, Reidun; Thorup-Kristensen, Kristian; Hansen, Sissel. |
| In repeatedly mown and mulched green manure leys, the mulched herbage contains substantial amounts of nitrogen (N), which may only slightly contribute to the following crops’ nutrient demand. The objective of the present work was to evaluate the effect of alternative strategies for green manure management on the yield and N recovery of a subsequent spring barley crop, and their short term effects on soil structure and earthworm populations. A field trial was run from 2008 to 2011 at four sites with contrasting soils under cold climate conditions. We compared several options for on-site herbage management and the application of anaerobically digested green manure herbage. Depending on the site, removal of green manure herbage reduced the barley grain yield... |
| Tipo: Journal paper |
Palavras-chave: Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/26212/2/Fr%C3%B8seth%20et%20al%202014%20Effects%20of%20green%20manure%20herbage%20management.pdf |
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| Bakken, Anne Kjersti; Henriksen, Trond; Mangerud, Kjell; Eltun, Ragnar; Riley, Hugh; Fjeld, Tori; Selnes, Svein; Wikmark, Thorbjørn. |
| I fleirårige, fastliggande forsøk på Planteforsk Apelsvoll og Kvithamar undersøker ein kva traktortyngde, pløyedjup og køyremåte ved pløying har å seie for jordstruktur og avlingar i økologisk korndyrking. Etter to år er det framleis ikkje store utslag for forsøksfaktorane. Avhengig av vekst og tildels traktortyngde er det sikre utslag for pløyedjup, men avlingsvariasjonen innan felt og delvis mellom år er stort sett større. Djup pløying gav gjennomgåande større kornavlingar enn grunn pløying, men for bygg etter grønngjødsling på Kvithamar, som verken var tilført husdyrgjødsel eller mineralgjødsel, vart avlingane størst med grunn pløying. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Soil tillage. |
| Ano: 2005 |
URL: http://orgprints.org/6889/1/gk9_2_bakken_362_367.pdf |
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| Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid; Hansen, Sissel. |
| Det var generelt et høgere innhold av de enkelte mikromineralene i andre slått enn i første slått. Flere av planteprøvene viste så lavt innhold av sink at det kan redusere avlingsnivået. Mikromineralinnholdet i kløver var høyere enn i den samlede fraksjonen av gras, kløver og urter, slik at økt kløverinnhold i enga er viktig for å øke innholdet av mikromineraler i fôret Ut fra mineralbehovet hos sau- og storfe viste plante- og blodprøver at flere av besetningene hadde for liten tilførsel av selen og E-vitamin, mens tilførselen av kobolt og kopper stort sett var tilfredsstillende. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Nutrient turnover Dairy cattle Sheep and goats Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/6935/1/Espen_Govasmark_Plantem%C3%B8t_%C3%98stlandet_11_12_feb_2004.doc |
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| Frøseth, Randi Berland; Bakken, Anne Kjersti; Bleken, Marina Azzaroli; Riley, Hugh; Thorup-Kristensen, Kristian; Hansen, Sissel. |
| In cereal production on stockless organic farms, green manure (GM) is commonly used to improve soil fertility. The clover-grass swards are mown frequently and the herbage is commonly mulched. The purpose of this study was to increase knowledge of the N-dynamics in such rotations, in order to suggest methods for improving N efficiency and thus organic cereal yields. The hypothesis was that spring application of biogas residue from anaerobic digestion of GM herbage increases the N uptake and yield of a subsequent barley crop, compared with repeatedly in situ mulching of the same GM herbage in the preceding season. The effect of various GM treatments on spring barley yields and nitrogen dynamics was investigated, at four sites differing in soil and climatic... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring; Farm nutrient management. |
| Ano: 2012 |
URL: http://orgprints.org/21128/1/Froseth_et_al_2012_Improving_N_efficiency_in_barley_through_green_manure_management_and_biogas_slurry.pdf |
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| Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid; Hansen, Sissel; Bernhoft, Aksel. |
| To evaluate the animal nutritional status of copper, molybdenum and cobalt on Norwegian organic farms, soil, herbage and animal blood samples were collected from 27 dairy and sheep farms and analysed for Cu, Mo and Co. The herbage median (10th-90th percentile) Cu, Mo, and Co concentrations (mg/kg DM) and the Cu:Mo ratio in the first cut were 5.3 (3.9-6.8), 1.5 (0.6-4.8), <0.05 (<0.05-0.08) and 3.8 (1.1-8.3) and in the second cut 7.0 (5.7-9.3), 3.3 (1.6-10.1), 0.06 (<0.05-0.15) and 2.0 (0.8-5.2), respectively. The results of mixed model analyses of herbage Cu and Mo indicated that soil pH, soil organic matter content, herbage botanical composition, yield and phenological stage of timothy at harvest mostly influenced the herbage micronutrient... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Farm nutrient management; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/6921/1/CuMoCo_artikkel.pdf |
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| Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid; Hansen, Sissel. |
| To obtain a general picture of the herbage zinc, iron and manganese concentrations and their relation to dietary requirements of ruminants on organic farms, we analysed soil and herbage samples from four regions in Norway. The soil median Zn, Fe and Mn concentrations were 0.18, 13 and 0.84 mg/L, respectively. The herbage median (10th-90th percentile) Zn, Fe and Mn concentrations (mg/kg) in herbage in the first cut were 19 (14-34), 50 (36-88), 34 (22-86) and in the second cut 21 (16-37), 84 (52-171) and 66 (36-205), respectively. The results of mixed model analysis of herbage Zn, Fe and Mn indicate that soil pH, soil texture, soil mineral concentration and botanical composition are the most influencing factors. We conclude that Zn, Fe and Mn did not limit... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Farm nutrient management; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/6110/1/ZnMnFe_artikkel.pdf |
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| Bakken, Anne Kjersti; Breland, Tor Arvid; Haraldsen, Trond K.; Aamlid, Trygve S.; Sveistrup, Tore E.. |
| Temporal changes in the scores of selected soil fertility indices were studied over six years in three different cases of organic crop rotation located in southern, eastern and central Norway. The cropping history and the initial scores of fertility indices prior to conversion to organic cropping differed between the sites. Crop yields, regarded as an overall, integrating fertility indicator, were in all rotations highly variable with few consistent temporal trends following the first year after conversion. On the site in eastern Norway, where conversion followed several years of all-arable crop rotations, earthworm number and biomass and soil physical properties improved, whereas the system was apparently degrading with regard to P and K trade balances... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Soil biology; Farm nutrient management. |
| Ano: 2005 |
URL: http://orgprints.org/7855/1/ANNE_KJERSTI_BAKKEN.pdf |
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| Hansen, Sissel; Bakken, Anne Kjersti. |
| The content of sulphur (S) in grassland on 27 Norwegian organic farms with dairy or sheep production was investigated in 2001 and 2002. The forage content of S was below the norms (2 g S kg DM-1) for both plants and animals in a large proportion of the samples. The average S content in forage at dairy farms was 1.4 g S kg DM-1 and at sheep farms 1.5 g. Even on grasslands with low plant S content (<1 g S kg DM-1), S-fertilization did not increase yields and increased the plants’ S content only very slightly. No indications of S deficiency were observed on the dairy farms. For one sheep farm with a forage S content of 1.1 ± 0.1g S kg DM-1, brittle and short winter wool was reported. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Pasture and forage crops; Feeding and growth. |
| Ano: 2008 |
URL: http://orgprints.org/11946/1/11946.pdf |
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| Registros recuperados: 12 | |
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