Abstract:
Winter wheat is a crop, which capitalizes very efficiently high fertilizer levels.
Therefore, applying 80 kg/ ha active ingredient of N, together with 70 kg/ha active ingredient
of P, has resulted in a statistically assured very significant yield increases of 1550 kg/ha (143
%), the average of the nine tested wheat varieties. Maintaining a constant phosphorus soil
background (70 kg/ha active ingredient), corroborated to the application of other two nitrogen
levels, higher with 40 kg/ha active ingredient of N, led to significant yield increases. From the
N0P0 unfertilized background to the N80P70 background, a yield increase of 1550 kg/ha can be
achieved. It diminished until 1090 kg/ha between N80P70 and N120P70 soil background and until
430 kg/ha between N120P70 and N160P70 soil background. The interaction between wheat
varieties and fertilization rates pointed out the Alex Variety and the N160P70 fertilization rate,
with a yield of 7800 kg/ha.
