Published in Scientific Papers. Series B, Horticulture, Vol. LXIII, Issue 1
Written by Maria DINU, Rodica SOARE, Cristina BĂBEANU, Marius VELEA
The increasing nutritional properties of vegetable species as well as their use in disease prevention has become a growing concern among researchers. This paper aims to study the influence of foliar fertilizers on the nutritional properties of pepper. The biological material was represented by two varieties of Capsicum annuum, var. tetragonum ('Cornel’) and Capsicum annuum var. longum ('Max’). The fertilization procedure of the experiment consisted in the application of N45: P45: K45 followed by foliar fertilization with Agroleaf Power 31:11:11, Agroleaf Total 20:20:20 and Agroleaf High K combined with Crop’Max’. For this purpose, production and quality elements (the content of soluble dry matter, titratable acidity, vitamin C content, reducing sugars, phenolic compounds and lycopene content and antioxidant activity) were determined. The results obtained in the fertilized varieties indicate an increase in the production and vitamin C and titratable acidity content, but a decrease in solid soluble dry matter and in reducing sugars content in both pepper varieties. Comparing the two varieties, the foliar fertilization increased the antioxidant activity caused by the vitamin C content (201.35 mg/100 g FW), the phenolic compounds (251.71 mg/100 g FW) and the lycopene content (126.91 mg/100 g FW) in the var. longum ('Max’).
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