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| Hilber, Isabel; Mäder, Paul; Schulin, Rainer; Wyss, Gabriela S.. |
| Organochlorine pesticides (OCP) are still found in food and feed crops although they were applied about 40 years ago. There is a considerable knowledge gap concerning the extent of soil and crop contamination by OCP. We performed two surveys in 2002 and 2005 to assess the loads of OCP in 41 Swiss horticultural fields under organic and conventional production and corresponding Cucurbitaceae fruits (cucumbers, zucchini, and pumpkin), whereas these fields stay for intensive agricultural production in Europe. In addition, soil organic carbon, texture, and pH were measured also. OCP were detected in 27 out of 41 fields (65.9%). The farming practice had no influence on the contamination or level of OCP in soil. The sum of OCP-loads per field ranged from <0.01... |
| Tipo: Journal paper |
Palavras-chave: Soil; Vegetables. |
| Ano: 2008 |
URL: http://orgprints.org/26424/1/Hilber_etal_2008_Chemosphere73.pdf |
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| Hilber, Isabel; Vogt, Lea; Wyss, Gabriela S.; Mäder, Paul; Schulin, Rainer. |
| Organochlorine pesticides (OCP) were once applied world wide but have been banned meanwhile in most countries because of their ecotoxicity, bioaccumulation and persistence. However, residues can still be present in soils even many years after applications have been stopped and taken up by crop plants. OCP accumulation from bound residues was found to be a particular problem in Cucurbitaceae plants. Two soil surveys performed in 2002 and 2005 in Switzerland revealed that OCP residues were taken up by cucumbers grown in soils that have been converted to organic production in the meantime. Even if legal tolerance values are not exceeded, this is a serious economic problem for the farmers affected by contaminated crops, because consumers of organically grown... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2007 |
URL: http://orgprints.org/13424/1/Hilber%2Detal%2D2007_exclusion_of_contaminants_Cost859.pdf |
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| Hilber, Isabel; Voegelin, Andreas; Barmettlet, Kurt; Kretzschmar, Ruben. |
| We investigated the effect of 4 yr of aging of a noncalcareous soil contaminated with filter dust from a brass foundry (80% w/w ZnO, 15% w/w Cu0.6Zn0.4) on the chemical extractability of Zn and Cu and their uptake by barley (Hordeum vulgare L.), pea (Pisum sativum L.), and sunflower (Helianthus annus L.). Pot experiments were conducted with the freshly contaminated soil (2250 mg kg21 Zn; 503 mg kg21 Cu), with the contaminated soil aged for 4 yr in the field (1811 mg kg21 Zn; 385 mg kg21 Cu), and with the uncontaminated control soil (136 mg kg21 Zn; 32 mg kg21 Cu). In comparison with the uncontaminated soil, the growth of barley and pea was clearly reduced in both contaminated soils, while toxicity symptoms did not systematically vary from the freshly... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Soil quality. |
| Ano: 2007 |
URL: http://orgprints.org/10696/1/Hilber%2Detal%2D2007_Plant_Zn%26Cu_JEQ.pdf |
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| Hilber, Isabel; Wyss, Gabriela S.; Mäder, Paul; Schulin, Rainer. |
| Organochlorine pesticides (OCP’s), such as dieldrin or DDT, were applied world wide against pests in horticulture, fruit and arable crops. Although OCP’s were banned 20 years ago, they still persist in soils and are taken up by the plants (Mandl and Lindner 1999). OCP residues in soil, for instance dieldrin, has been detected in high economic value crops (Wyss et al., 2004) such as cucumber and pumpkin (Cucurbitaceae), which strongly accumulate OCP in their fruits. Consumers generally expect that food is safe and uncontaminated, but those who buy organically grown products are particularly concerned about health and thus sensitive to food quality. Therefore, OCP residues in organic food stuff have become a major issue not only for food control authorities,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Soil quality. |
| Ano: 2007 |
URL: http://orgprints.org/13422/1/hilber%2Detal%2D2006%2DWG2_WG3_SaintEtienne.pdf |
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| Hilber, Isabel; Wyss, Gabriela S.; Mäder, Paul; Bucheli, Thomas D.; Meier, Isabel; Vogt, Lea; Schulin, Rainer. |
| Activated charcoal (AC) amendments have been suggested as a promising, cost-effective method to immobilize organic contaminants in soil. We performed pot experiments over two years with cucumber (Cucumis sativus L.) grown in agricultural soil with 0.07 mg kg_1 of weathered dieldrin and 0, 200, 400, and 800 mg AC per kg soil. Dieldrin fresh weight concentrations in cucumber fruits were significantly reduced from 0.012 to an average of 0.004 mg kg_1, and total uptake from 2 to 1 mg in the 800 mg kg_1 AC treatment compared to the untreated soil. The treatment effects differed considerably between the two years, due to different meteorological conditions. AC soil treatments did neither affect the availability of nutrients to the cucumber plants nor their yield... |
| Tipo: Journal paper |
Palavras-chave: Soil; Vegetables. |
| Ano: 2009 |
URL: http://orgprints.org/26375/1/Hilber_etal_2009_EP157.pdf |
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