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| Titel |
Managing Selenium Recycling Organic Matter in Soils from Semiarid Environments |
| VerfasserIn |
John W. Crawford, Rosario García Moreno, Robert Burdock |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250046274
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| Zusammenfassung |
| Most of the world population are exposed either to a lack from one or more essential mineral
or to toxicity produced by over consumption. In fact, in most of the developing countries it
has been an increasing deficiency of Se in diet as soil and plant management are focused in
high yielding in detriment of quality of crops to assure a healthy diet in humans. This study
tried to evaluate the deficiencies of Se in semiarid soil conditions and how the micronutrients
can be effectively manage through the recycling of organic matter. This is especially true for
Se, since this micronutrient is not essential for the development of plants, but it becomes an
important element for animal and human diets, in order to improve defences again cancer
and other well known diseases. Mineral forms of Selenium are expensive and are
very limited as non renewable resource. Research has shown that organic matter
plays a very important role in the selenium immobilisation and low availability to
plants. The establishment of this relationship is of great importance in the case of
regions submitted to arid and semi arid conditions, where the lack of organic matter
does not help to maintain a natural reservoir of this element in a bioavailable form. |
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