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| Chen, Lin; Kivelä, Jukka; Helenius, Juha; Kangas, Arjo. |
| The traditional production of mineral N and P fertilisers is unsustainable due its reliance on fossil fuels in the case of N, and on limited mineral resource stocks in the case of P. The use of alternative or complementary fertilisers that originate from organic waste materials is gaining interest. Organic farms, especially arable organic farms without livestock, need usable sources of plant nutrients. Meat bone meal (MBM), a potential organic fertiliser for agricultural crops, contains considerable amounts of nutrients (on average 8% N, 5% P, 1% K and 10% Ca). In EU countries, Commission regulation (EC) No 181/2006 authorised the use of MBM as an organic fertiliser. In this study, MBM was compared to conventional mineral NPK fertiliser. Two randomised... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry. |
| Ano: 2011 |
URL: http://orgprints.org/19398/1/kivela.pdf |
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| Risku-Norja, Helmi; Hietala, Reija; Virtanen, Hanna; Ketomäki, Hanna; Helenius, Juha. |
| The potential for and environmental consequences of localising primary production of food were investigated by considering different food consumption patterns, based on conventional and organic production. Environmental impact was assessed according to agricultural land use and numbers of production animals, both of which depend on food consumption. The results were quantified in terms of nutrient balances, greenhouse gas and acid emissions and the diversity of crop cultivation, which indicate eutrophication of watersheds, climate change and landscape changes, respectively. The study region was able to satisfy its own needs for all farming and food consumption scenarios. Dietary choice had a marked impact on agricultural land use and on the... |
| Tipo: Journal paper |
Palavras-chave: Food systems. |
| Ano: 2008 |
URL: http://orgprints.org/16629/1/riskunorja.pdf |
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| Risku-Norja, Helmi; Kurppa, Sirpa; Helenius, Juha. |
| This study explores the impacts on agricultural and total GHG emissions of Finnish consumption if the share of animal based food products was reduced and if the share of ecologically produced food was to increase in Finland. GHG emissions associated with production of basic food items were quantified (per capita per annum) for current food consumption, for national standard diet recommendations, for a diet with no milk and beef and for a vegan diet including an oat-based milk susbstitute. The major source of GHG in primary food production is the cultivated soil. For the present average food consumption the emissions from the soil comprise 62 %, the share of emissions due to enteric fermentation is 24 %, whereas energy consumption and fertilizer... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/16406/1/consumer2.pdf |
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| Koppelmäki, Kari; Hagolani-Albov, Sophia; Parviainen, Tuure; Virkkunen, Elina; Helenius, Juha. |
| Agroecological symbiosis (AES) enhances productivity in agriculture. A case study of the first AES in Finland indicated that productivity of on the organic crop farm could be increased by producing biogas from green manure leys, fallows, and other locally available biomasses. At the same time, the farm became a net-energy producer instead of being an energy consumer. Combining the food processing, crop production, energy production and closer interaction with consumers increase the overall sustainability of the local food system |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Social aspects Air and water emissions Networks and ownership Farm nutrient management. |
| Ano: 2017 |
URL: http://orgprints.org/31439/1/Koppelm%C3%A4ki_NJF_2017_495_AES_fin.docx |
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| Seppänen, Laura; Helenius, Juha. |
| In many European countries, organic agriculture has rapidly been transformed from a farmers' movement to an institutionalized part of agricultural policy. In certification, compliance with published organic standards is verified through annual inspections on farms. In Finland, the role of advice in organic inspections has been the subject of debate. Two inspections are used here to show how the term organic was defined and what the role of advice in relation to compliance was. Both compliance and advisory types of interaction between the inspector and the farmer were identified along an axis from “input substitution” to “system redesign.” The findings illustrate the heterogeneity of the processes and definitions of the term organic in connection with... |
| Tipo: Journal paper |
Palavras-chave: Policy environments and social economy Education; Extension and communication Regulation. |
| Ano: 2004 |
URL: http://orgprints.org/23330/1/23330.doc |
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| Tarmi, Sanna; Tuuri, Hannu; Helenius, Juha. |
| To determine the importance of field boundary habitats for farmland biodiversity, we surveyed a total of 193 boundaries from four climatically and agriculturally dissimilar regions in Finland. We measured the current plant species richness and composition of the boundaries, and based on the differences in vegetation characteristics, we describe six boundary types. The observed plant species were mainly indicators of fresh to wet soils and moderate to rich mineral nitrogen content. The most frequent species were tall, perennial monocots and dicots indicating the high productivity of thevegetation. Moreove, herbicide-tolerant species were common. No species rare for Finland were found.In animal husbandry regions, the most frequent species were sown grassland... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2002 |
URL: http://orgprints.org/16743/1/tarmi.pdf |
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| Stoddard, Fred; Helenius, Juha; Mäkelä, Pirjo; Niemi, Elisa; Seppänen, Mervi; Turakainen, Marja. |
| We are investigating the role of legumes as components of bioenergy production. Two separate experiments, one with annual species and other with perennials, were established at Viikki in 2007. Selected grasses, legumes (or nitrogen fertilizer) and additional species were sown singly or in blends of two or three species. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/14709/1/LEGUMES.pdf |
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