Physico‐geochemical and mineral composition of neem tree soils and relation to organic properties
| Autor: | Joan Voros, Ronald G.V. Hancock, Christopher C. R. Allen, Susan Aufreiter, Michael W. Milner, William C. Mahaney, Ramanathan Krishnamani |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
030219 obstetrics & reproductive medicine Geography Planning and Development Geology Soil science Pesticide engineering.material Mineral composition complex mixtures 01 natural sciences Apatite 03 medical and health sciences 0302 clinical medicine Monazite Environmental chemistry visual_art Soil water engineering visual_art.visual_art_medium Fertilizer Leaching (agriculture) Clay minerals 010606 plant biology & botany |
| Zdroj: | Geografiska Annaler: Series A, Physical Geography. 98:143-154 |
| ISSN: | 1468-0459 0435-3676 |
| Popis: | The Neem tree, the oil of which has a long history of pesticide, fertilizer and medicinal use in India, has been studied extensively for its organic compounds. Here we present a physical, mineralogical and geochemical database resulting from the analyses of two Neem soil profiles (epipedons) in India. Neem tree derivatives are used in the manufacture of a variety of products, from anti-bacterial drugs and insecticides to fertilizers and animal feeds. A preliminary geochemical and mineralogical analysis of Neem soils is made to explore the potential for chemical links between Neem tree derivatives and soils. Physical soil characteristics, including colour, texture and clay mineralogy, suggest the two pedons formed under different hydrological regimes, and hence, are products of different leaching environments, one well-drained site, the other poorly drained. Geochemically, the two Neem soils exhibit similarities, with elevated concentrations of Th and rare earth elements. These elements are of interest because of their association with phosphates, especially monazite and apatite, and the potential link to fertilizer derivatives. Higher concentrations of trace elements in the soils may be linked to nutritional derivatives and to cell growth in the Neem tree. |
| Databáze: | OpenAIRE |
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