Two field experiments were conducted at EI·Mansoura Agric. Center,
Dakahlia district, Egypt during 1996/1997 and 1997/1998 seasons. The main purpose
of this investigation was to study the effect of fertilization treatments, foliar application
times on performance of some wheat cultivars as well as their interactions on growth
characters, grain protein content, nitrogen uptake and protein yield. The trails were
arranged in a strip split plot design with four replications. The main findings could be
summarized as follows: 1· Addation of Syrialin (400 gm/fad) + Phosphorin (400 gm/fad) + organic fertilizer (40
m³/fad) as b iofertilization increased f lag I eaf a rea ( cm²) and number 0 f t illers/m².
Plant height, grain protein percentage and protein yield/fad were Significantly
increased by adding the biofertilization of Syria lin (600 gm/fad) + Phosphorin (600
gm/fad) + organic fertilizer (40 m³/fad). Hcwever, the highest nitrogen uptake was
obtained from NPK fertilization. 2-Foliar application of Super Grow 20-20·20 significantly increased plant height,
number of tillers/m², flag leaf area, nitrogen uptake and protein yield/fad when
sprayed at tillering + elongation stages. Spraying Super Grow at heading stage
significantly increased grain protein percentage. 3-Gemmiza 3 CV surpassed the other two tested wheat cultivars, i.e. Sakha 69 and
Sids 8 in plant height and number of tillers/m2. Sids 8 CV had the highest flag leaf
area, grain protein percentage, nitrogen uptake and protein yield/fad compared with
Gemmiza 3 and Sakha 69 CVs. 4- The tallest plants. highest flag leaf area and highest grain protein percentage of
Sakha 69 and Gemmiza 3 CVs were obtained from biofertilization of Syrialin (600
gm/fad) + Phosphorin (600 gm/fad) + organic fertilizer (40 m³/fad). The highest
nitrogen uptake of Sids 8 produced with biofertilization of Syria lin (400 gm/fad) +
Phosphorin (400 gm/fad) + organiC fertilizer (40 m3/fad). Generally, it could be concluded that Sids 8 and Gemmiza 3 CVs produced
the highest growth parameters, grain protein percentage, protein yield/fad and
nitrogen uptake per unit area with biofertilization of Syrialin (400 gm/fad) + Phosphorin
(400 g m/fad) + 0 rganic fertilizer (40 m³/fad) with spraying Super Grow 20·20-20 at
tillering + elongation stages.