Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals
Weed communities of organically cropped spring cereal stands in the southern and the northwestern coastal regions of Finland (= south and northwest, respectively) were compared with respect to number of species, frequency of occurrence, density and dry weight. Regional specialization of agricultural...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
2008-12-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/5832 |
| _version_ | 1818335056145416192 |
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| author | P. RIESINGER T. HYVÖNEN |
| author_facet | P. RIESINGER T. HYVÖNEN |
| author_sort | P. RIESINGER |
| collection | DOAJ |
| description | Weed communities of organically cropped spring cereal stands in the southern and the northwestern coastal regions of Finland (= south and northwest, respectively) were compared with respect to number of species, frequency of occurrence, density and dry weight. Regional specialization of agricultural production along with differences in climate and soil properties were expected to generate differences in weed communities between south and northwest. Total and average numbers of species were higher in the south than in the northwest (33 vs. 26 and 15.6 vs. 10.0, respectively). Some rare species (e.g. Papaver dubium) were found in the south. Fumaria officinalis and Lamium spp. were found only in the south. The densities and dry weights of Lapsana communis, Myosotis arvensis, Polygonum aviculare, Tripleurospermum inodorum and Vicia spp. were higher in the south, while the densities and dry weights of Elymus repens, Persicaria spp. and Spergula arvensis were higher in the northwest. Total density of weeds did not differ between south and northwest (average = 565 vs. 570 shoots m-2, respectively). Total dry weight of weeds was higher in the northwest compared with the south (average = 1594 vs. 697 kg ha-1, respectively), mainly due to the high dry weight of E. repens. The only variable that was dependent on the duration of organic farming was weed density in the south. The abundance of nitrophilous in relation to non-nitrophilous weed species was higher while the abundance of perennial ruderal and grassland weed species was lower compared with previous weed surveys. This can be regarded as the result of increasing cropping intensity on organic farms in Finland. Different weed communities call for the application of specific target-oriented weed management in the respective coastal regions.; |
| first_indexed | 2024-12-13T14:17:21Z |
| format | Article |
| id | doaj.art-99ff91839f0044a6a1f8fd3c1f10c75a |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-12-13T14:17:21Z |
| publishDate | 2008-12-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-99ff91839f0044a6a1f8fd3c1f10c75a2022-12-21T23:42:15ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18952008-12-01152Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cerealsP. RIESINGERT. HYVÖNENWeed communities of organically cropped spring cereal stands in the southern and the northwestern coastal regions of Finland (= south and northwest, respectively) were compared with respect to number of species, frequency of occurrence, density and dry weight. Regional specialization of agricultural production along with differences in climate and soil properties were expected to generate differences in weed communities between south and northwest. Total and average numbers of species were higher in the south than in the northwest (33 vs. 26 and 15.6 vs. 10.0, respectively). Some rare species (e.g. Papaver dubium) were found in the south. Fumaria officinalis and Lamium spp. were found only in the south. The densities and dry weights of Lapsana communis, Myosotis arvensis, Polygonum aviculare, Tripleurospermum inodorum and Vicia spp. were higher in the south, while the densities and dry weights of Elymus repens, Persicaria spp. and Spergula arvensis were higher in the northwest. Total density of weeds did not differ between south and northwest (average = 565 vs. 570 shoots m-2, respectively). Total dry weight of weeds was higher in the northwest compared with the south (average = 1594 vs. 697 kg ha-1, respectively), mainly due to the high dry weight of E. repens. The only variable that was dependent on the duration of organic farming was weed density in the south. The abundance of nitrophilous in relation to non-nitrophilous weed species was higher while the abundance of perennial ruderal and grassland weed species was lower compared with previous weed surveys. This can be regarded as the result of increasing cropping intensity on organic farms in Finland. Different weed communities call for the application of specific target-oriented weed management in the respective coastal regions.;https://journal.fi/afs/article/view/5832 |
| spellingShingle | P. RIESINGER T. HYVÖNEN Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals Agricultural and Food Science |
| title | Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals |
| title_full | Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals |
| title_fullStr | Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals |
| title_full_unstemmed | Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals |
| title_short | Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals |
| title_sort | weed occurrence in finnish coastal regions a survey of organically cropped spring cereals |
| url | https://journal.fi/afs/article/view/5832 |
| work_keys_str_mv | AT priesinger weedoccurrenceinfinnishcoastalregionsasurveyoforganicallycroppedspringcereals AT thyvonen weedoccurrenceinfinnishcoastalregionsasurveyoforganicallycroppedspringcereals |