Akram M, Ashraf MY, Waraich EA, Hussain M and Hussain N, 2010. Performance of autumn planted maize (Zea mays L.) hybrids at various nitrogen levels under salt affected soils. Journal of Soil and Environment, 29: 23-32.
Aliasgharzade N, Neyshabouri MR and Salimi G, 2006. Effects of arbuscular mycorrhizal fungi and Bradyrhizobium japonicum on drought stress of soybean. Biologia Journal, 61: 324-328.
Arif M, Amin I, Jan MT, Munir I and Nawab K, 2010. Effect of plant population and nitrogen levels and methods of application on ear characters and yield of maize. Pakistan Journal of Botany, 42: 1959-1967.
Baodong C, Shen H, Li X, Feng G and Christie P, 2004. Effects of EDTA application and arbuscular mycorrhizal colonization on growth and zinc uptake by maize (Zea mays L.) in soil experimental contaminated with zinc. Journal of Plant and Soil, 261: 219-229.
Barea JM, Pozo MJ, Azcon R and Azcon-Aguilar C, 2005. Microbial co-operation in the rhizosphere. Journal of Experimental Botany,56: 1761-1778.
Boyer CN, Roberts RK, Larson JA, McClure MA and Tyler DD, 2015. Risk effects on optimal nitrogen rates for corn rotations in Tennessee. Agronomy Journal,107: 896-902.
Bhatt PS, 2012. Response of sweet corn hybrid to varying plant densities and nitrogen levels. African Journal of Agricultural Research, 7: 6158-6166.
Ciampitti IA and Vyn TJ, 2012. Physiological perspectives of changes over time in maize yield dependency on nitrogen uptake and associated nitrogen efficiencies: A review. Field Crops Research, 133: 48-67.
Cakmakc R, Donmez MF and Erdogan U, 2007. The effect of plant growth promoting rhizobacteria on barley seedling growth, nutrient uptake, some soil properties, and bacterial counts. Turkish Journal of Agriculture and Forestry,31: 189-199.
De Juan V J., Maturano M, Artigao Ramirez A, Tarjuelo MB and Ortega A J, 2005. Growth and nitrogen use efficiency of irrigated maize in a semiarid region as affected by nitrogen fertilization. Spanish Journal of Agricultural Research, 3(1): 134-144.
Delfieh, M,
Modarres SAM and
Farhoudi R, 2016. Effects of Organic, Biologic and Chemical Nitrogen Fertilizers on Fennel (
Foeniculum vulgare Mill.) Yield and Essential Oil. Journal of Essential Oil Bearing Plants, 19 (2): 339-348.33.
Forrestal PJ, Kratochvil RJ, and Meisinger JJ, 2012. Late-season corn measurement to assess soil nitrate and nitrogen management. Agronomy Journal, 104: 148-157.
Gholami A, Shahsavani S and Nezarat S, 2009. The effect of Plant Growth Promoting Rhizobacteria (PGPR) on germination, seedling growth and yield of maize. International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, 49: 19-24.
Gosling P, Hodge A, Goodlass G and Bending GD, 2006. Arbuscular mycorrhiza fungi and organic farming.Journal of Agriculture, Ecosystems and Environment, 113: 17-35.
Ijaz1 MM, Raza AS, Ali S, Ghazi K, Yasir TA, Saqib M, and Naeem M, 2015. Differential planting density influences growth and yield of hybrid maize (Zea mays L.). Journal of Agriculture and Environmental Sciences,2: 1-4.
Jasemi M, Darab F, Naser R, 2013. Effect of planting date and nitrogen fertilizer application on grain yield and yield components in maize. American-Eurasian Journal of Agricultural and Environmental Sciences, 13: 914-919.
Joseph B, Patra RR and Lawrence R, 2007. Characterization of plant growth promoting rhizobacteria associated with chickpea (Cicer arietinum L). International Journal of Plant Production,1: 141-152.
Kamil SS, Sarkawt AA, Ismael AH, Pshtiwan HA, 2015. Effect of Bio-fertilizer and Chemical Fertilizer on Growth and Yield in Cucumber (Cucumis sativus) in Green House Condition. Pakistan Journal of Biological Sciences, 18 (3): 129-134.
Keskin B, Akdeniz H, Yilamz IH and Turan N, 2005. Yield and quality of forage corn (Zea mays L.) as influenced by cultivar and nitrogen rate. Agronomy Journal, 4(2): 138-141.
Maria CL, Dartora J, Marini D and Hann JE, 2012. Inoculation with Azospirillum, nitrogen fertilization in Associated with maize. Journal of Revista Ceres Vicosa, 59: 399-405
Marinari S, Mascinadaro G, Ceccanti B and Grego S, 2000. Influence of organic and mineral fertilizers on soil biological and physical properties. Journal of Bioresource Technology, 72: 9-17.
Migahed HA, Ahmed AE and Abd El-Ghany BF, 2004. Effect of different bacteial strains as biofertilizer agents on growth, production and oil of Apium graveolense under Calcareous soil. Journal of Agricultural Science, 12: 511-525.
Narula N, Kumar V, Behl RK, Deubel A, Gransee A and Merbach W, 2000. Effect of P-Solubilizing Azotobacter chroococcum on N, P and K uptake in P-responsive wheat genotypes grown under greenhouse conditions. Journal of Plant Nutrition and Soil Science,163: 393-398.
Narula N, Kumar V, Singh B, Bhatia R and Lakshminarayana K, 2005. Impact of biofertilizers on grain yield inspring wheat under varying fertility conditions and wheat-cotton rotation. Journal of Agronomy and Soil Science,51: 79-89.
O’Neil PM, Shanahan JF, Schepers JS and Caldwel B, 2004. Agronomic responses of corn hybrids from different eras to deficit and adequate levels of water and nitrogen. Agronomy Journal, 96: 1660-1667.
Pablo BA, Hernan EE, Hernán S R and Fernando AH, 2008. Nitrogen use efficiency in maize as affected by nitrogen availability and row spacing. Agronomy Journal,100: 1094-1100.
Rahmati H, 2012. Effect of Plant Density and Nitrogen Rates on Morphological characteristics Grain Maize. Journal of Basic Applied Science Research, 2 (5): 4680-4683.
Raja V, 2001. Effect of nitrogen and plant population on yield and quality of super sweet corn (Zea mays). Indian Agronomy Journal, 46: 246-249.
Sharifi RS, Taghizadeh R, 2009. Response of maize (Zea mays L.) cultivars to different levels of nitrogen fertilizer. Journal of Agriculture and Environmental Sciences, 73: 518-521.
Shrestha J, 2013. Effect of nitrogen and plant population on flowering and grain yield of winter maize. Sky Journal of Agricultural Research, 2: 64-68.
Vanyine V, Toth AS and Nagy J, 2012. Effect of nitrogen doses on the chlorophyll concentration, yield and protein content of different genotype maize hybrids in Hungary. African Journal of Agricultural Research, 7(16): 2546-2552.
Worku M, Bänziger M, Erley GS, Friesen D, Diallo AO and Horst WJ, 2007. Nitrogen uptake and utilization in contrasting nitrogen efficient tropical maize hybrids. Crop Science, 47: 519-528.
Wortmann CS, Tarkalson DD, Shapiro CA, Dobermann AR, Ferguson RB, Hergert GW and Walters D, 2011. Nitrogen use efficiency of irrigated corn for three cropping system in Nebraska. Agronomy Journal, 103:76-84.
Yeasmin T and Zamani P, 2007. Arbuscular mycorrhizal fungus inoculum production in rice plants. African Journal of Agricultural Research, 2(9): 463-467.
Zaidi A and Khan MS, 2005. Interactive effect of rhizotrophic microorganisms on growth, yield andphosphorus uptake of wheat. Journal of Plant Nutrition, 28: 2079-2092.