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References
Ahuja LR, Cassel DK, Bruce RR, Barnes BB (1989). Evaluation of spatial distribution of hydraulic conductivity using effective porosity data. Soil Sci. 148:404-411. Crossref |
||||
Akamigbo FOR, Asadu CLA (1983). The influence of parent materials on soils of Southeastern Nigeria. J. East Afr. Agric. For. 48:81-91. | ||||
Aune JB, Lal R (1997). Agricultural productivity in the tropics and critical limits of properties of oxisol, ultisol and alfisol. Trop. Agric. 74:96-103 | ||||
Blake GR, Hartge KH (1986). Bulk density. In Methods of Soil Analysis, part 1, A. Klute (Ed.) Agron. No 9. USA Madison W.I. pp. 370-373. | ||||
Brejda JJ Moorman TB, Karlen DL, DaoO TH (2000). Identification of regional soil quality factors and indicators: 1. Central and Southern High-Plains. Soil Sci. Soc. Am. J. 64:2115-2124. Crossref |
||||
Bremmer JM, Mulvaney CS (1982). Total N, In: Page et al (eds) Methods of Soil Analysis. Part2. 2nd ed. Agron. Monog. 9. ASA and SSSA, Madison WI. pp. 895-926. | ||||
Cassel OK (1983). Spatial and temporal variability of soil physical properties following tillage of Norfolk loamy sand. Soil Sci. Soc. Am. J. 39:247-250. Crossref |
||||
Connoly RD (1998). Modelling effects of soil structure on the water balance of soil-crop systems: A review. Soil Tillage Res. 48:1–19. Crossref |
||||
Ezeaku P, Iwuanyanwu FC, Asadu CLA, Timm LC (2012). Evaluating soil physical fertility and degradation rates as influenced by land use change and catenary sequence in northcentral Nigeria. In: Luis C. Timm, Donald Gabriels and Deyanira, Lobo, L (eds) Proceedings of the 2nd workshop of the International Centre for Theoretical Physics Soil Physics Associates, ICTP, Trieste, Italy, September, 2012. ICTP-ICE Special Pre-Publication 2:23-33. | ||||
Ezeaku PI (2006). Estimation of crop water requirement from climate and soil data for field maize production in southeastern Nigeria. J. Sustain. Trop. Agric. Res. 17:91-96. | ||||
Fu BJ, Chen LD, Ma KM, Zhou HF, Wang J (2000). The relationships between land use and soil conditions in the hilly area of the Loess Plateau in northern Shaanxi, China. Catena 39:69-78. Crossref |
||||
Franzmeier DP (1991). Estimation of hydraulic conductivity from effective porosity data for some Indiana soils. Soil Sci. Soc. Am. J. 55:1801-1803. Crossref |
||||
Gee GW, Bauder JW (1986). Particle Size Analysis. In: Klute,A (ed). Methods of Soil Analysis. Part 2, 2nd ed. Agron. Monog. 9. ASA and SSSA, Madison, WI pp. 383-411. | ||||
Hertmink AE, Veldkamp T, Bai Z (2008). Land use change and soil fertility decline in tropical regions. Turk. J. Agric. For. 32:195-213. | ||||
Hudson I, Vooorees WB (1995): Soil compaction. In R. Lal et al (eds) Methods for Assessment of Soil Degradation. CRS Press, Boca Raton. pp. 167-179. | ||||
Klute A, Dirksen J (1986). Hydraulic conductivity and diffusivity. Laboratory methods. In: A klute (ed). Methods of soil analysis part 1 2nd ed. pp. 687-734. | ||||
Kosmas C, Gerontidis S, Marathianou M (2000). The effect of land use change on soils and vegetation over various lithological formations on Lesvos (Greece). Catena 40:51-68. Crossref |
||||
Mbagwu JSC, Lal R, Scott TW (1983): Physical properties of three soils in southern Nigeria. Soil Sci. 136:48-55. Crossref |
||||
Mbagwu JSC (1995). Saturated hydraulic conductivity in relation to physical properties of soils in the Nsukka plains, southeastern Nigeria. Geoderma 68:51-66 65. | ||||
Muller DJ, McBratney D (2001). Soil spatial variability, pp343-374. In A.W. Warrick (ed) Soil Physics Companion. CRC Press, USA. | ||||
MCLEAN EO (1982). Soil pH and lime requirement. Agron. 9. SSSA. Madison W.I. pp. 199-224. | ||||
Nelson DW, Sommers CE (1982). Total Carbon, Organic Carbon and Organic Matters, In: A.C. PAGE and C.A. BLACK (eds). Methods of Soil Analysis Part 2, 2nd ed. Agron. Monogr. 9 ASA and SSA, Madison, W.I. pp. 539-579. | ||||
Oko-Ibom GO, Asiegbu JE (2006). Growth and yield responses of rainy season field tomatoes to timing and splitting of fertilizer application. J. Agric. Food Environ. Ext. 5(1):17-25. | ||||
Oku E, Essoka A, Thomas E (2010). Variability of soil properties along an udalf toposequence in the humid forest zone of Nigeria. Kasetsart J. (Nat. Sci.) 44:564-573. | ||||
Olson SR, Sommers LE (1982). Phosphorus. In: Page et al (eds) Methods of Soil Analysis. Part 2. Agron 9. ASA, SSSA. Madison, W.I. pp. 403-434. | ||||
Sanchez-Maranon M, Sriano M, Delgado G, Delgado R (2002). Soil quality in Mediterranean mountains environment: Effects of land use change. Soil Sci. Soc. Am. J. 66:948-958. | ||||
Schilling KE, Palmer JA, Bettis EA, Jacobson P, Schultz RC, Isenhart TM (2009). Vertical distribution of total carbon, nitrogen and phosphorus in riparian soils of Walnut Creek, southern Iowa. Catena 77:266–273. Crossref |
||||
Spark DL (1995). Environmental soil chemistry. Academic press, Inc. San Diego, California. | ||||
Urioste A, Hevia GG, Hepper EN, Aanton LE, Bono AA, Buschiazzo DE (2006). Cultivation effects on the distribution of organic carbon, total nitrogen and phosphorus in soils of the semiarid region of Argentinian Pampas. Geoderma 136:621–630. Crossref |
||||
Wei XR, Shoa MA, Fu XL, Horton R (2010). Changes in soil organic carbon and total nitrogen after 28 years grassland afforestation: effects of tree species, slope position, and soil order. Plant Soil 331:165–179. Crossref |
||||
Wilding LP (1985). Spatial variability: its documentation, accommodation and implication to soil surveys, In D.R. Nielsen and J. Bouma (eds) Soil Spatial Variability: Pudoc, Wageningen, Netherlands pp. 166-194. |
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