|
|
|
| Registros recuperados: 12 | |
|
| |
|
| |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Riley, Hugh; Løes, Anne-Kristin; Hansen, Sissel; Dragland, Steinar. |
| Trials were performed with red beet and white cabbage in 1998-2001 to assess the effects on yields and nutrient utilization of surface mulch (chopped grass and/or red clover). No other nutrients were applied. Nitrogen (N), phosphorus (P) and potassium (K) contents were measured in mulch, saleable products and above-ground plant residues. A single mulch application of about 12 Mg DM ha-1 increased the yields of both crops significantly. Mean yields of saleable products were increased from 27 to 33, and from 44 to 56 Mg FW ha-1 of red beet and white cabbage, respectively. However, the average apparent recoveries of mulch derived nutrients in above-ground plant parts (calculated by subtraction of uptakes in the control treatment) were only 13%, 14% and 18% of... |
| Tipo: Journal paper |
Palavras-chave: Farm nutrient management; Composting and manuring. |
| Ano: 2003 |
URL: http://orgprints.org/5465/1/BAHRileyetal.pdf |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| Løes, Anne-Kristin; Johansen , Anders; Pommeresche, Reidun; Riley, Hugh. |
| Utilizing animal slurry to produce biogas may reduce fossil fuel usage and emissions of greenhouse gases. However, there is limited information on how the recycling of digested slurry as a fertilizer impacts soil fertility in the long run. This is of concern because organic matter in the slurry is converted to methane, which escapes the on-farm carbon cycle. In 2010, a study of this question was initiated on the organic research farm in Tingvoll, Norway. So far, a biogas plant has been built, producing anaerobically digested slurry to be compared with undigested slurry in perennial ley and arable crops. Effects on crop yields, soil fauna, microbial communities, soil structure, organic matter and nutrient concentrations are measured. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Soil biology; Composting and manuring. |
| Ano: 2011 |
URL: http://orgprints.org/19139/1/Poster_Loes_et_al_NJF_2011.pdf |
| |
|
|
| Riley, Hugh; Pommeresche, Reidun; Eltun, Ragnar; Hansen, Sissel; Korsaeth, Audunk. |
| Abstract In order to assess long-term effects on productivity, environmental impacts and soil fertility of contrasting farming practices, six cropping systems, ranging from conventional arable without livestock to organic mixed dairy farming with few arable crops, have been compared since 1989 on a loam soil. A decline in soil structure quality was found in a conventional arable system with annual ploughing with no rotational grass. This system had higher bulk density and mean aggregate size than other systems, and lower levels of plant available water and aggregate stability. Opposite trends were related to the proportion of grass leys in the other systems and to their levels of soil organic matter. The latter declined markedly over 15 years in the... |
| Tipo: Journal paper |
Palavras-chave: Soil; Farming Systems; Soil biology. |
| Ano: 2008 |
URL: http://orgprints.org/13474/1/Riley_et_al._2008_AGEE3129.pdf |
| |
| Registros recuperados: 12 | |
|
|
|
