1. M Alatise (2010). 9th International Drainage Symposium held jointly with CIGR and CSBE/SCGAB Proceedings, 13-16 June 2010, Québec City Convention Centre, Quebec City, Canada. XVII th World Congress of the international commission of Agricultural Engineering (CIGR) hosted by the Canadian society for Bioengineering (CSBE /SCGAB)
2. Isaac Ajayi,Isaac Ololade,Emmanuel Gbadamosi,Muraina Mohammed,Ayodeji Sunday (2010). A Study on Effects of Soil Physico-Chemical Properties on Cocoa Production in Ondo State. Modern Applied Science, 4(5), 35-43.
3. G Blake,K Hartge (1986). Bulk Density.
4. L Gaston,M Locke,R Zablotowicz,K Reddy (2001). Spatial Variability of Soil Properties and Weed Populations in the Mississippi Delta. Soil Science Society of America Journal, 65(2), 449-459.
5. G Gee,J Bouder (1986). Particle size analysis. Methods of soil analysis. Part 1. Physical and mineralogical methods, 825-844.
6. R Grau-Andrés,G Davies,C Rey-Sanchez,J Slater (2011). Bryophyte community composition and diversity are indicators of hydrochemical and ecological gradients in temperate kettle hole mires in Ohio, USA. Mires and Peat, 24, 37.
7. N Isirimah,C Igwe,C (2003). Important ions in soil environment.
8. M Jackson (1962). Soil chemical analysis. Soil chemical analysis
9. R Koech,M Gillies,R Smith (2010). Simulation modelling in surface irrigation systems. Southern Region Engineering Conference
10. Evelyn Krull,Jeffrey Baldock,Jan Skjemstad (2004). Importance of mechanisms and processes of the stabilisation of soil organic matter for modelling carbon turnover. Functional Plant Biology, 30(2), 207-222.
11. S Mc Grath,C Zhang (2004). Geostatistical and GIS analyses on soil organic carbon concentrations in grassland of southeastern Ireland from two different periods. Geoderma, 119, 261-275.
12. M Mzuku,R Khosla,R Reich,D Inman,F Smith,L Macdonald (2005). Spatial Variability of Measured Soil Properties across Site‐Specific Management Zones. Soil Science Society of America Journal, 69(5), 1572-1579.
13. D Nelson,L Sommers (1996). Total carbon, organic carbon and organic matter.
14. S Noma,A Ojanuga,S Ibrahim,M Iliya (2005). Detailed soil survey of Sokoto -Rima floodplain at Sokoto. In managing oil resources for food security and sustainable environment. Proc. 29 th Annual Conf. Soil Sci. Soc. Nig
15. M Shukla,R Lal (2002). Sivagiri micro-watershed of Chittoor district in Andhra Pradesh for sustainable land use planning. Encyclopedia of soil science, 53, 11-21.
16. A Thangasamy,M Naidu,N Ramavatharam,Raghava Reddy,C (2005). Characterization, classification and evaluation of soil resources in. Characterization, classification and evaluation of soil resources in
17. J Adepetu,A Adebayo,E Aduayi,G Alofe (1979). A preliminary survey of the fertility status of soils in Ondo state under traditional cultivation. Ife J. Agric, 1, 134-149.
18. Mohammad Valipour (2012). Comparison of Surface Irrigation Simulation Models: Full Hydrodynamic, Zero Inertia, Kinematic Wave. Journal of Agricultural Science, 4(12)
19. A Warrick,D Nielsen (1980). Spatial variability of soil physical properties in the field. Applications of soil physics, 319-344.
