Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt
H. Hamed, M., Abu Zied Amin, A. (2017). Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt. EKB Journal Management System, 38(January-March), 112-119. doi: 10.21608/asejaiqjsae.2017.2367
Mahdy H. Hamed; Abu El-Eyuoon Abu Zied Amin. "Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt". EKB Journal Management System, 38, January-March, 2017, 112-119. doi: 10.21608/asejaiqjsae.2017.2367
H. Hamed, M., Abu Zied Amin, A. (2017). 'Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt', EKB Journal Management System, 38(January-March), pp. 112-119. doi: 10.21608/asejaiqjsae.2017.2367
H. Hamed, M., Abu Zied Amin, A. Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt. EKB Journal Management System, 2017; 38(January-March): 112-119. doi: 10.21608/asejaiqjsae.2017.2367

Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt

Alexandria Science Exchange Journal
Article 13, Volume 38, January-March - Serial Number 1, March 2017, Page 112-119  XML PDF (837.13 K)
Document Type: Original Article
DOI: 10.21608/asejaiqjsae.2017.2367
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Authors
Mahdy H. Hamed1; Abu El-Eyuoon Abu Zied Amin2
1Department of Soils & Water, Faculty of Agriculture, Assiut University, New Valley, Egypt
2Department of Soils & Water, Faculty of Agriculture, Assiut University,Egypt
Abstract
The current research was carried out in 2016 to evaluate potassium Quantity-Intensity parameters and the relation of these parameters to the characteristics of some agricultural soils of El-Dakhla Oasis, New Valley, Egypt. Six surface soil samples (0-30 cm) were collected from different sites in El-Dakhla Oasis. The values of equilibrium activity ratio of potassium (ARko) ranged between 0.0071 (soil 3) to 0.0320 (mol/L)1/2(sample no. 1). The labile K (-ΔK0) values also, varied from 0.020 (sample no. 4) to 0.412 (cmol/kg soil (sample no.1).The values of the potassium potential buffering capacity (PBCK) of soil ranged from 0.964 to 12.86 [(Cmol kg-1/(mol L-1)0.5]. Generally, the highest value of ARko, ΔK0, PBCK parameters were related in soil sample no. 1[(0.032 (mol/l)0.5, 0.412 cmol/kg, and 12.86 [(cmol kg-1/(mol L-1)0.5], respectively. The ARko was a negatively significant correlated with exchangeable potassium (r=-0.822), Organic matter (-0.633) and available K (-0.444). A positive highly significant correlation was obtained between the labile K (-ΔK0)and both exchangeable Ca and Mg (r=0.936 and 0.941, respectively). The PBCK showed a positive significant correlation with clay content, available K and cation exchangeable capacity (CEC), and negative  significant correlations with soil pH (r=-0.795) and CaCO3 (r=-0.633).
Keywords
Key words: Quantity/Intensity parameters; Potassium kinetics; El-Dakhla Oasis
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