Manal A. Abd Alla- Gada, A. Abdel Kader Hegab-I.A. Osama, S. Gendy( 2009). Status Of Total And Chemically Available Nutrient In The Interferance Area Between El-Fayoum And Nile ValleyJ. Biol. Chem. Environ. Sci., 2009, Vol. 4(4): 333-350
Abstract: Sixteen soil profiles were selected from physiographic units representing the interference area between El-Fayoum Governorate and Nile Valley in order to study their total and DTPA-extractable nutrition elements. Moreover, the relation between total and available micronutrients and some soil variables was undertaken. Total Fe, Mn, Zn and Cu varies from 1500 to 37000, 32 to 535, 7.0 to 95.0 and 11.8 to 60.0 mg kg-1 soil, respectively. DTPA-extractable Fe, Mn, Zn and Cu ranged from 2.0 to 22.5, 0.3 to 7.3, 0.15 to 2.4, and 0.25 to 1.4 mg kg-1 soil, respectively. Generally, the soils of El-Fayoum and the Nile valley contain the high values of Fe, Mn, and Zn, while the interference soils contain the high values of Cu. The data show that, DTPA-extractable micronutrients are in adequate amounts in all the studied surface samples, except for the soils of old and young terraces which are low. Factors affecting total and DTPA-extractable micronutrients were predicted through correlation coefficients between some soil variables with total and available micronutrients. Also, the statistical measures, i.e., weighted mean, trend and specific range of these nutrients were computed and interpreted in terms of soil genesis and formation.
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