The influence of variety and fertilization on the content of nitrates in parsley (Petroselinum ssp.)

This paper presents the results of research on the impact of different varieties and fertilizers on the nitrate content in the leaf and root of parsley. In two-year research, three varieties of parsley were used and three variants of fertilization were applied (mineral fertilizers, organic and organo-mineral fertilizer) as well as a control variant. Nitrate content differed in the leaf and root. Depending on the investigated factors, their content in the leaf ranged from 55.60 to 426.09 mg/kg and in the root it ranged from 98.46 to 688.97 mg/kg. The nitrate content in parsley leaf and root was significantly influenced by the variety and type of fertilizer. The variety 'Domestic sawmills' accumulated the minimum nitrate content in the leaf and root of parsley. Mineral fertilization contributed to the accumulation of the highest content of harmful nitrates in the leaf and root of parsley.