OPEN ACCESS Science International ISSN 2305-1884 DOI: 10.17311/sciintl.2017. Research Article How Inorganic Nitrogen Fertilization and Foliar Sprayed Treatments Affect Grain Quality of Maize W.A.E Abido, S.E. Seadh and D.R.A. Abdulrahman Department of Agronomy, Faculty of Agriculture, Mansoura University, Egypt Abstract Background and Objective: Enhancing grain quality of maize hybrid single cross 131 (SC 131) and reducing environmental pollution may be achieving by using foliar spraying using foliar fertilization treatments. Methodology: Two experiment was conducted at the Experimental Station Farm, Faculty of Agriculture, Mansoura University, Egypt, during 2014 and 2015 summer seasons. A strip-plot design with four replications. Results: Foliar spraying with the mixture of gibberellic acid (GA 3 ) at the rate of 50 mL+amino acids (AA) at the rate of 500 mL+yeast extract (YE) at the rate of 2000 mL/200 L water/fed produced the highest parentages of grains quality characters in both seasons. On the other hand, the lowest values of grains quality characters were resulted from plants grown without foliar spraying in the two growing seasons. Highest percentages of grains quality characters were obtained from fertilizing maize plants with 120 kg N/fed (100 of the recommended dose) in both seasons. On the other hand, the lowest percentages of grains quality characters were given when fertilizing plants with 72 kg N/fed (60 of the recommended dose) in the two growing seasons. Conclusion: It can be summarized that for improving grains quality at the same time reduce environmental pollution under the environmental conditions of Dakahlia Governorate, Egypt foliar fertilizing maize with the mixture of GA 3 at the rate of 50 mL+AA at the rate of 500 mL+YE at the rate of 2000 mL/200 L water/fed three times after 30, 37 and 44 days from sowing plus 96 kg N/fed. Key words: Maize, foliar spraying, (GA 3 ), nitrogen, quality Received: Accepted: Published: Citation: W.A.E Abido, S.E. Seadh and D.R.A. Abdulrahman, 2017. How Inorganic nitrogen fertilization and foliar sprayed treatments affect grain quality of maize. Sci. Int., 5: 1-6. Corresponding Author: W.A.E Abido, Department of Agronomy, Faculty of Agriculture, Mansoura University, Egypt Copyright: © 2017 W.A.E Abido, et al. This is an open access article distributed under the terms of the creative commons attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. Competing Interest: The authors have declared that no competing interest exists. Data Availability: All relevant data are within the paper and its supporting information files.