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EL-AKABAWY, M., MORSI, F. (2000). A COMPARATIVE STUDY BETWEEN ELECTROULTRA FILTERATION AND SOME CONVENTIONAL EXTRACTION PROCEDURES OF SOIL-K ON SOME SOILS OF EGYPT. Egyptian Journal of Agricultural Research, 78(2), 529-544. doi: 10.21608/ejar.2000.321961
MOHAMED A. EL-AKABAWY; FAUZA M. MORSI. "A COMPARATIVE STUDY BETWEEN ELECTROULTRA FILTERATION AND SOME CONVENTIONAL EXTRACTION PROCEDURES OF SOIL-K ON SOME SOILS OF EGYPT". Egyptian Journal of Agricultural Research, 78, 2, 2000, 529-544. doi: 10.21608/ejar.2000.321961
EL-AKABAWY, M., MORSI, F. (2000). 'A COMPARATIVE STUDY BETWEEN ELECTROULTRA FILTERATION AND SOME CONVENTIONAL EXTRACTION PROCEDURES OF SOIL-K ON SOME SOILS OF EGYPT', Egyptian Journal of Agricultural Research, 78(2), pp. 529-544. doi: 10.21608/ejar.2000.321961
EL-AKABAWY, M., MORSI, F. A COMPARATIVE STUDY BETWEEN ELECTROULTRA FILTERATION AND SOME CONVENTIONAL EXTRACTION PROCEDURES OF SOIL-K ON SOME SOILS OF EGYPT. Egyptian Journal of Agricultural Research, 2000; 78(2): 529-544. doi: 10.21608/ejar.2000.321961

A COMPARATIVE STUDY BETWEEN ELECTROULTRA FILTERATION AND SOME CONVENTIONAL EXTRACTION PROCEDURES OF SOIL-K ON SOME SOILS OF EGYPT

Article 3, Volume 78, Issue 2, July 2000, Page 529-544  XML PDF (4.09 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2000.321961
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Authors
MOHAMED A. EL-AKABAWY1; FAUZA M. MORSI2
1Soils, water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
2Central Laboratory of Design and Statistical Analysis. Agricultural Research Center, Giza, Egypt
Abstract
Nineteen cultivated soil samples representing alluvial and nonallu­vial soils differing in clay and K content, were tested for K using the most conventional K-extraction procedures, namely: water soluble-K, ammonium acetate, nitric acid and 0/1 measurements. The results were compared and stati:,tically correlated with the EUF-K parameters de-sorbed from the soil samples. The relative yield of the actually uptake-K from those soils by clover plants in a pot experiment was measured, as a biological index, to evaluate the validity of both the EUF and the other methods in describing K status. The EUF-K parameters showed correla­tion with the most important conventional K extraction methods. The bi­ological test revealed that EUF-K parametrs are highly effective in de­scribing soil•K status, comparing with the other used methods. The results ascertained the suitability of the EUF method in order to easily characterizing the K availability status, providing information on K mobili­ty that cannot be obtained by the "static' conventional methods and for saving time and reagents.
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