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| Nykänen, A.; Leinonen, P.; Väisänen, J.. |
| Grassland production based on legumes is an essential part of the productivity and economy of the organic farming systems. The clover content is an important factor in organic grassland management to optimize the yield, feed value and pre-crop effect of ley. The ley yield and clover content of one-, two- and three-year-old leys were determined on eight organic farms in 1998. Two-year-old leys produced the highest (6500 kg/ha dm) and three-year-old leys (4900 kg/ha dm) the lowest yields, with no significant differences between one- and two-year-old leys. The clover content (20-80 % of dm) diminished to the same extent as the yields. Because the ley samples from the organic farms gave strong evidence of decreasing yield level and clover content in the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems. |
| Ano: 2000 |
URL: http://orgprints.org/4080/1/4080.pdf |
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| Nykänen, A.; Jauhiainen, L.; Rinne, M.. |
| In eastern Finland, 12 mixtures of spring wheat, spring barley, spring oats and/or rye with vetches and/or peas were evaluated in field experiments from 2005 to 2007 for their dry matter(DM) production, crude protein (CP) concentration and digestibility using three different harvesting times. Spring wheat-pea and spring wheat-vetch-rye mixtures produced the highest DM yields (5,000-6,000 kg/ha) while the lowest yields were found with spring oats-vetch (4,000 kg/ha DM). The highest CP concentrations were found in vetches (200 g/kg DM) and lowest in spring cereals (90-120 g/kg DM). Organic matter digestibility was highest in peas 700-750 g/kg) and lowest in spring rye and wheat (550-610 g/kg). It is suggested that decisions concerning when to harvest... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions. |
| Ano: 2009 |
URL: http://orgprints.org/16427/1/ARnykanen.pdf |
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| Nykänen, A.; Leinonen, P.; Nykänen-Kurki, P.. |
| The clover content is an important factor in organic grassland management to optimize yield, feeding value and pre-crop effect of the ley. The variation of red clover (Trifolium pratense) content in swards of different age is often rather high in Finland. In the ongoing field experiment (1999-2002) staggered sowing of red clover seed was tested to regulate the clover content of the mixed sward. Sowing strategy did not have clear effect on the clover content or the yield of the sward. However the seeding rate affected the clover density of the field (plants/m²) in the first year. After two years the differences were equated. The best strategy to control the clover amount in the mixed swards seems sowing of 2 or 3 kg/ha (100 or 150 seeds/m²) clover seeds in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems. |
| Ano: 2002 |
URL: http://orgprints.org/4075/1/4075.pdf |
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| Lätti, M.; Koikkalainen, K.; Kuisma, M.; Lötjönen, T.; Nykänen, A.. |
| Co-operation in organic production provides the potential for production specialisation with the help of co-operation in machinery use, input integration, crop rotation, shared buildings and marketing. Co-operation models provide the opportunity to optimise production between different lines of production from environmental, economic and functional perspectives. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics. |
| Ano: 2005 |
URL: http://orgprints.org/5223/1/5223.pdf |
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