28. Effect of foliar fertilizers on young sunflower and corn plants under nitrogen deficiency

The effect of foliar fertilizers on young sunflower (Helianthus annuus L. cv. Biser) and corn (Zea mays L., cv. Knezha 613) plants under nitrogen deficiency was studied. The experiments were conducted in controlled conditions as sand culture. The plants were grown for 3 weeks separated in 2 groups – control with complete Knop nutrient solution and plants under nitrogen deficiency with Knop without nitrogen. After that period the stressed plants were recovered with foliar fertilizers trade mark Aveikan and Poly-plant in concentrations of 0,3%. Three weeks later the biometrical and physiological parameters were analyzed. On the ground of the obtained results the foliar fertilizers Aveikan and Ploly-plant were suggested as a reliable tool which improves the growth of sunflower and corn plants under nitrogen deficiency.