Some bio-chemical nitrogen and phosphorus fertilization regimes impacts on wheat (Triticum aestivum L.)‎ productivity

الملخص EN

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 Viallage, Zagazig District, Sharkia Governorate, Egypt, during the two successive winter seasons of 2012-2013 and 2013-2014.

The five nitrogen fertilization regimes (NFR) studied were (control ; 100 kg N/fad.; 75 kg N/fad.

+ cerealine; 50 kg N/fad.+ cerealine; cerealine) as well, the seven phosphorus fertilization regimes (PFR) studied were (control; 15 kg P2O5/fad.; phosphorien; mycorrhiza; 7.5 kg P2O5/fad.

+ phosphorien ; 7.5 kg P2O5/fad.

+ mycorrhiza ; phosphorien + mycorrhiza).

Regarding the impact of (NFR), results show that, whatever the NFR applied, it caused significant increase over the control in each of spike No./m2, grain weight/spike, grain No./spike, 1000-grain weight, grain yield/fad., and harvest index.

The appliance of the dual bio-chemical fertilizers i.e., (75 kg N/fad.+ cerealine) ranked at the top in grain yield/fad., and the main components i.e.

spike number/m2, grain weight/spike, 1000-grain weight.

As for PFR, results revealed that availability of phosphorus via the application of any PFR surpassed the control in each of spike No./m2, 1000-grain weight, harvest index and grain yield/fad.

The PFR which included both chemical and bio-fertilizers i.e.

(7.5 kg P2O5/ fad.

+ phosphorien) outyielded other PFR, and was excellency in each of spike No./m2, grain weight/spike, grain number/spike and harvest index.