Effect of mineral fertilization on the quality parameters of head cabbage (Brassica oleracea L. var. capitata L.)

Lyuba Nenova and Ivanka Mitova
Agricultural Academy, Institute for Soil Science, Agrotechnology and Plant Protection, “N. Poushkarov”, Sofia 1080, Bulgaria

Abstract

Nenova, L. & Mitova, I. (2020). Effect of mineral fertilization on the quality parameters of head cabbage (Brassica oleracea L. var. capitata L.). Bulg. J. Agric. Sci., 26 (2), 457–460

The effect of mineral fertilization – increasing norms of nitrogen (N80, N160 and N240, kg.ha-1) and background levels of phosphorus and potassium (P150 K100, kg.ha-1) on the quality characteristics of head cabbage was studied in the conditions of field experiment. Absolutely dry weight of cabbage head and inner stem decreased by 7.8% and 8.2% respectively in the variants were fertilization was applied compared to the control. The total sugars content of cabbage head of variants T1-N80 and T2-N160 increased by 18–22%. The total nitrogen and nitrates content in cabbage head biomass were within the tolerable concentrations. Only in the inner stem of the variant fertilized by N240P150K100 the concentration of – 386.6 mg NO3.kg-1 fresh weight was above the admissible norms. A positive correlation relationship was found between absolutely dry weight and total sugars content (R = 0.812). Most of the quality parameters determined as optimal the fertilization applied in the variant N160P150K100.

Keywords: head cabbage; mineral fertilization; quality; production

See the article as a PDF.