Rosner, J., Zwatz, E., Klik, A. and Gyuricza, C. (2008) Conservation Tillage Systems-Soil-Nutrient and Herbicide Loss in Lower Austria and the Mycotoxin Problem. 15th International Congress of ISCO, Geographical Research Institute, Hungary.
 Motavalli, P.P., Stevens, W.E. and Hartwig, G. (2003) Remediation of Subsoil Compaction and Compaction Effects on Corn N Availability by Deep Tillage and Application of Poultry Manure in a Sandy-Textured Soil. Soil & Tillage Research, 71, 121-131. http://dx.doi.org/10.1016/S0167-1987(03)00041-2
 Gul, B., Marwat, K.B., Hassan, G., Khan, A., Hashim, S. and Khan, I.A. (2009) Impact of Tillage, Plant Population and Mulches on Biological Yield of Maize. Pakistan Journal of Botany, 41, 2243-2249.
 Borghei, A.M., Taghinejad, J., Minaei, S., Karimi, M. and Varnamkhasti, M.G. (2008) Effect of Subsoiling on Soil Bulk Density, Penetration Resistance and Cotton Yield in Northwest of Iran. International Journal of Agriculture and Biology, 10, 120-123.
 Mullins, G.L., Alley, S.E. and Reeves, D.W. (1998) Tropical Maize Response to Nitrogen and Starter Fertilizer under Strip and Conventional Tillage Systems in Southern Alabama. Soil & Tillage Research, 45, 1-15.
 Barbosa, L.R., Diaz, O. and Barber, R.G. (1989) Effects of Deep Tillage on Soil Properties, Growth and Yield of Soya in a Compacted Ustochrept in Santa Cruz, Bolivia. Soil & Tillage Research, 15, 51-63.
 Amujiyegbe, B.J., Opabode, J.T. and Olayinka, A. (2007) Effect of Organic and Inorganic Fertilizer on Yield and Chlorophyll Content of Maize (Zea mays L.) and Sorghum (Sorghum bicolor L.) Moench. African Journal of Biotechnology, 6, 1869-1873.
 Mohamed, S.A., Ewees, S.A., Sawsan, A., Seaf, E.Y. and Dalia, M.S. (2008) Improving Maize Grain Yield and Its Quality Grown on a Newly Reclaimed Sandy Soil by Applying Micronutrients, Organic Manure and Biological Inoculation. Research Journal of Agriculture and Biological Sciences, 4, 537-544.
 Yusuf, D.D. (2006) Effect of Variation in Tillage Systems on Maize (Zea mays L.) Establishment and Grain Yield in a Semi-Arid Tropical Climate. Journal of Agricultural Science and Technology, 8, 171-179.
 Gungula, D.T., Kling, J.G. and Togun, A.O. (2003) CERES Maize Predictions of Maize Phenology under Nitrogen Stressed Conditions in Nigeria. Agronomy Journal, 95, 892-899. http://dx.doi.org/10.2134/agronj2003.0892
 Valadabadi, S.A. and Farhani, H.A. (2010) Effect of Planting Density and Pattern on Physiological Growth Indices and Maize (Zea mays L.) under Nitrogenious Fertilizer Application. Journal of Agricultural Extension and Rural Development, 2, 40-47.
 Cha-um, S., Nhung, N.T.H. and Kirdmanee, C. (2010) Effect of Mannitoland Salt-Induced Iso-Osmotic Stress on Proline Accumulation, Hotosynthetic Abilities and Growth Characters of Rice Cultivars (Oryzasativa L). Pakistan Journal of Botany, 42, 927-941.
 Efthimiadou, A., Bilalis, D., Karkanis, A. and Williams, B.F. (2010) Combined Organic/Inorganic Fertilization Enhance Soil Quality and Increased Yield, Photosynthesis and Sustainability of Sweet Maize Crop. Australian Journal of Crop Science, 4, 722-729.
 Carpenter, A.C. and Board, J.E. (1997) Branch Yield Components Controlling Soybean Yield Stability across Plant Populations. Crop Science, 37, 885-891. http://dx.doi.org/10.2135/cropsci1997.0011183X003700030031x
 Horie, T. and Sakuratani, T. (1985) Studies on Crop-Weather Relationship Model of Rice. I. Relation between Absorbed Solar Radiation by the Crop and Dry Matter Production. Agricultural and Forest Meteorology, 40, 31-242.
 Ayoola, O.T. and Makinde. E.A. (2009) Maize Growth, Yield and Soil Nutrient Changes with N-Enriched Organic Fertilizers. African Journal of Food, Agriculture, Nutrition and Development, 9, 580-592.
 Sarwar, G., Hussain, N., Schmeisky, H., Suhammad, S., Ibrahim, M. and Ahmad, S. (2008) Efficiency of Various Organic Residues for Enhancing Rice-Wheat Production under Normal Soil Conditions. Pakistan Journal of Botany, 40, 2107-2113.