On-farm field experiments were conducted to assess the impacts of some nitrogen (N) and phosphorus (P) bio-chemical fertilization regimes on wheat grain yield and its components and harvest index of wheat cultivar Misr-1. Experiments were conducted in a farmer's field, El-Sheikh Essa Village, Zagazig District, Sharkia Governorate, Egypt, during the two successive winter seasons of 2012-2013 and 2013-2014.
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