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| Hatakka, Tarja; Mäkelä-Kurtto, Ritva; Tarvainen, Timo; Laakso, Pirkko; Laitonen, Annukka; Eurola, Merja. |
| The main aim of this investigation was to study trace element contents in the Finnish arable land on crop and dairy farms. The crop farms were located on clay soils and the dairy farms on finesand soils. The agua regia extractable trace elements in the top- and subsoil of the clay soils at the crop farms were two to three times those of the finesand soils at the dairy farms. Most of the elements were significantly correlated with the clay content. Quantitatively more Cd, Pb and Hg enriched in the clay soils on the crop farms in southwestern Finland than in the finesand soils on the dairy farms in Ostrobothnia. However, dairy farming seemed to enrich the topsoil with more Cr, Cu, Se, V and Zn than crop farming, on average. |
| Tipo: Report |
Palavras-chave: Environmental aspects. |
| Ano: 2007 |
URL: http://orgprints.org/14826/1/met108.pdf |
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| Mäkelä-Kurtto, Ritva; Laitonen, Annukka; Eurola, Merja; Vuorinen, Arja; Pasanen, Titta; Rankanen, Riitta; Suominen, Kimmo; Laakso, Pirkko; Tarvainen, Timo; Hatakka, Tarja; Salopelto, Juha. |
| This study was part of a three-year (2004-2007) project entitled "Assessment and reduction of heavy metal inputs into Finnish agro-ecosystems" that was funded by the Ministry of Agriculture and Forestry in Finland. The main aim of this study was to estimate field balances of trace elements at the farm level on typical crop and dairy farms in Finland in 2004. Field balances estimated at the farm level showed that the balances of the harmful heavy metals, Cd and Hg, were often slightly positive leading in accumulation of these metals into the soil on the crop and dairy farms. Selenium indicated a highly positive balance resulting in enrichment of this element in the soil in both farming systems. Also, the Cu and Zn balances were positive on the dairy... |
| Tipo: Report |
Palavras-chave: Environmental aspects. |
| Ano: 2007 |
URL: http://orgprints.org/14824/1/met111.pdf |
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| Mäntylahti, Väinö; Laakso, Pirkko. |
| Increasing concentrations of arsenic and heavy metals in agricultural soils are becoming a growing problem in industrialized countries. These harmful elements represent the basis of a range of problems in the food chain, and are a potential hazard for animal and human health. It is therefore important to gauge their absolute and relative concentrations in soils that are used for crop production. In this study the arsenic and heavy metal concentrations in 274 mineral soil samples and 38 organogenic soil samples taken from South Savo province in 2000 were determined using the aqua regia extraction technique. The soil samples were collected from 23 farms.The elements analyzed were arsenic, cadmium, chromium, copper, mercury, nickel, lead and zinc. The median... |
| Tipo: Journal paper |
Palavras-chave: Soil quality. |
| Ano: 2002 |
URL: http://orgprints.org/17092/1/m%C3%A4ntylahti.pdf |
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