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| Stavridou, Eleftheria; Thorup-Kristensen, Kristian; Young, Scott D.. |
| Selenium (Se) release from four plant species (Indian mustard, fodder radish, Italian ryegrass and hairy vetch) was measured under controlled leaching conditions and in a pot incubation experiment as part of a study of the potential for using these plant species as Se catch crops. Catch crops may reduce Se leaching and, by subsequent release of Se from the plant material, increase the available Se for succeeding crops. Plants grown both without and with Se addition (250 g Se/ha) were tested. In the leaching experiment, frozen plant material was incorporated into soil columns and incubated at room temperature for up to 19 weeks. The results showed that Se concentrations in the leachate were higher when Se-enriched plant material was incorporated in the... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19589/4/19589.pdf |
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| Stavridou, Eleftheria. |
| Selenium (Se) and glucosinolates has been found to have beneficial effects for human health. The most common way to increase Se and glucosinolates in plants is through using inorganic fertilizers however, concerns over environmental contamination by fertilizers increased the demand for sustainable produced foods. Thus, the aim of this project was to evaluate the efficiency of different crop management strategies (catch crops, intercropping) to increase Se and glucosinolates concentrations in plants rather than the application of agrochemicals. Catch crops have been used successfully to reduce sulphur and nitrogen leaching and increase nutrient availability for the succeeding, similar beneficial effects on Se may be expected. Nitrogen and sulphur... |
| Tipo: Thesis |
Palavras-chave: Crop combinations and interactions; Vegetables; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19590/1/Ph.d_Eleftheria_Stavridou.pdf |
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| Stavridou, Eleftheria; Young, Scott D.; Thorup-Kristensen, Kristian. |
| Background and Aims Selenium (Se) is an essential nutrient for humans and animals. In order to ensure an optimal concentration of Se in crops, Se fertilisers are applied. Catch crops may be an alternative way to increase Se concentrations in vegetables. Methods Three experiments in Denmark between 2007–10 investigated the ability of catch crops (Italian ryegrass, fodder radish and hairy vetch) under different fertiliser regimes to reduce soil Se content in the autumn and to increase its availability in spring to the succeeding crop. Results and Conclusions The catch crops (Italian ryegrass and fodder radish) increased water-extractable Se content in the 0.25–0.75 m soil layer in only one of the experiments. Selenium uptake by the catch crops... |
| Tipo: Journal paper |
Palavras-chave: Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19588/7/19588.pdf |
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| Stavridou, Eleftheria; Broadley, Martin R.; Thorup-Kristensen, Kristian; Young, Scott D.. |
| Selenium (Se) is an essential nutrient for animals, humans and microorganisms. The importance of Se in the prevention, as well as the treatment, of chronic and degenerative diseases in humans has been established. Catch crops have been used successfully in agriculture to improve soil fertility, increase nitrogen and sulfur content in the soil and avoid nutrient leaching. The intention of the present study was to estimate the net Se mineralization rate from plant material, relative to inorganic salts, and to evaluate the risk of Se leaching after their application. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management. |
| Ano: 2009 |
URL: http://orgprints.org/19591/1/NetMineralizationRateOfSeleniumProceeding_ELST.pdf |
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| Stavridou, Eleftheria; Kristensen, Hanne L.; Krumbein, Angelika; Schreiner, Monika. |
| Field and greenhouse pot experiments were conducted to evaluate the potential to use intercropping as an alternative method to increase glucosinolates in Brassicas by manipulating nitrogen (N) and sulphur (S) balance by intercropping with lettuce (Lactuca sativa L. var. capitata). In both experiments, four combinations of N and S fertilization were used. In the field experiment no effect of intercropping on the total glucosinolates was found as the growing lettuce was strongly inhibited by the presence of broccoli (Brassica oleracea L. var italic). The reduction in neoglucobrassicin in broccoli from intercropping was probably attributed to the lower N concentrations in broccoli florets. In contrast to this, in the pot experiment both total and individual... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions; Vegetables; Farm nutrient management. |
| Ano: 2012 |
URL: http://orgprints.org/19596/1/19596.pdf |
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