[1]
Schjanning, P., Thomsen, I.K., Maberg, J.P., de Jonge, H., Kristensen, K., Christensen, B. 1999. Turnover of organic matter in differently textured soils. I. Physical characteristics of structurally disturbed and intact soils. Geoderma 89, 177-198.
DOI: 10.1016/s0016-7061(98)00083-4
Google Scholar
[2]
Horn, R., Fleige, H. 2009. Risk assessment of subsoil compaction for arable soils in Northwest Germany at farm scale. Soil Till. Res. 102, 201-208.
DOI: 10.1016/j.still.2008.07.015
Google Scholar
[3]
Ball B.C., Scott A., Parker J.P. 1999. Field N2O, CO2 and CH4 fluxes in relation to tillage, compaction and soil quality in Scotland. Soil Till. Res. 53, 29-39.
DOI: 10.1016/s0167-1987(99)00074-4
Google Scholar
[4]
Shakoor, A and BD Cook. 1990. "The Effect of Stone Content, Size, and Shape on Engineering. Properties of a Compacted Silty Clay." Bull. Assoc. Eng. Geol. XXVII(2):245–253.
DOI: 10.2113/gseegeosci.xxvii.2.245
Google Scholar
[5]
Anonymous 1995. Biotechnology for the 21st century: New Horizons. Biotechnology subcommittee (BRS) committee in Fundamental science and research national scienceand technology council .Washington DC.
Google Scholar
[6]
Schroth, MH, SJ Ahearn, JS Selker, and JD Istok. 2005. "Characterization of Miller-Similar Silica Sands for Laboratory Hydrologic Studies." Soil Sci. Soc. Am. J. 60:1331–1339.
DOI: 10.2136/sssaj1996.03615995006000050007x
Google Scholar
[7]
Edem, I. D and U.C. Udo-Inyang. 2013. Consequences of effluent discharge and sea water intrusions on soil's nutrient pools and biological spectra in Niger Delta. J.Wetlands Biodiversity, 3:51-66
Google Scholar
[8]
Kamann, PJ, RW Ritzi, DF Dominic, and CM Conrad. 2007. "Porosity and Permeability in Sediment Mixtures". Ground Water, 45(4):429-438.
DOI: 10.1111/j.1745-6584.2007.00313.x
Google Scholar
[9]
Gupta, P.K. 2004. Method in Environmental analysis Water, Soil, Air. Updesh puroline for Agro-bios (India), Jodhpur.
Google Scholar
[10]
Koltermann CE and SM Gorelick. 2003. "Fractional Packing Model for Hydraulic Conductivity Derived from Sediment Mixtures." Water Resour. Res. 31(12):3283–3297.
DOI: 10.1029/95wr02020
Google Scholar
[11]
Marion, D. 2009. Acoustical, Mechanical, and Transport Properties of Sediments and Granular Materials. Ph.D. dissertation, 136 pp., Stanford University, Stanford, California.
Google Scholar
[12]
N.P.C. (National population commission) 2006. National Population census bulletin.
Google Scholar
[13]
Soil Survey Staff. 1975. "Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys." USDA-SCS Agric. Handbook 436, U.S. Government Printing Office, Washington, D.C.
DOI: 10.1111/j.1475-2743.2001.tb00008.x
Google Scholar
[14]
Troeh, I.O., and Thompson, U.C. 1993. Soil pH ranges for pH classes and associated conditions. National soil survey manual.
Google Scholar
[15]
Gee, GW and D Or. 2002. "Particle-Size Analysis." In JH Dane and GC Topp (eds.), Methods of Soil Analysis Part 4 Physical Methods. Pp. 255-293, Soil Science Society of America, Inc. Madison, Wisconsin.
DOI: 10.2136/sssabookser5.4.c12
Google Scholar
[16]
Akinrinde, E.A. 2006. Issues of optimum nutrient supply for sustainable crop production in tropical developing countries. Pakistan journal of nutrition 5 (4): 377-387.
DOI: 10.3923/pjn.2006.387.397
Google Scholar
[17]
Nunez-Delgado, B., Morrison L, Gulson, L 2002. Threshold of concern: a technique for evaluating environmental impact and amenity values. Journal of forestry 84-86
Google Scholar
[18]
Odu, C.T 2000. Rehabilitation of soils after oil spills. In Akoroda, M. O. (ed), Agronomy in Nigeria. Department of Agronomy, University of Ibadan, Nigeria. P.223-227.
Google Scholar
[19]
Isirimah, N.O, Effiong, G.S .and Eshiet, U. 2006. Influence of liming on extractable P growth and yield evaluation of okra (Abelmoscuhus esculentus(L) Moench). NJAFE 3 (1&2):131-134
Google Scholar
[20]
Brady, N. and R. Weil. 2002. The nature and properties of soils, 13th Edition, prentice Hall. Upper Saddle River, New Jersey. 960 p.
Google Scholar
[21]
Dunn, A.J and G.R. Mehuys. 1984. "Relationship between Gravel Content of Soils and Saturated Hydraulic Conductivity in Laboratory Tests." In JD Nichols (ed.), Erosion and Productivity of Soils Containing Rock Fragments. Special Publication, Vol. 13, Soil Science Society of America, Madison, Wisconsin.
DOI: 10.2136/sssaspecpub13.c6
Google Scholar