Antoniya Stoyanova Trakia University, Faculty of Agriculture, Stara Zagora, Bulgaria

Gancho Ganchev Trakia University, Faculty of Agriculture, Stara Zagora, Bulgaria

Velika Kuneva Agricultural University, Plovdiv, Bulgaria

Mitko Georgiev Trakia University, Faculty of Agriculture, Stara Zagora, Bulgaria

The present research aims at assessing the influence of leaf fertilizers on the two common wheat varieties. Study results show that the crude protein content ranges from 128.50-143.94 g/kg DM in the Enola variety and from 115.93 to 127.34 g/kg DM in the Illico variety. The introduction of Wuxal Grano slurry increased the crude protein content by 9.1 and 12.0 % relative to the control. The applied leaf fertilizers do not affect the contents of FUM, FUG and PDI. As a result of the correlation analysis, a very high correlation (r = 0.947-0.993) was found between CP and PDI for both common wheat varieties.