YIELD AND QUALITY OF LEAFY PARSLEY AS AFFECTED BY THE NITROGEN FERTILIZATION
Eugeniusz KołotaWrocław University of Environmental and Life Sciences
Leafy parsley is a spice rich in vitamins and minerals widely used in West European countries in fresh, dried and frozen form to enhance the flavor of many foods.
In Poland till now the leaves of tuber-rooted parsley are commonly produced for this purpose. Little information is available with respect to the effects of N fertilization on yield and crop quality of different type of leafy parsley cultivars. In a field experiment conducted in 2005–2007 nitrogen fertilizer in the same amount of 160 kg N· ha-1 was supplied as a single preplant or split dose (80 + 80 kg N·ha-1, and 80 + 40 + 40 kg N·ha-1). In the other treatment the split dose was reduced to 120 kg N·ha-1, (40 + 40 + 40 kg N·ha-1). There was determined the yield, dry matter, vitamin C, total N and nitrates content in leaves of two cultivars (Paramount and Titan) in three subsequent harvests. Irrespective of N fertilization, Paramount-a curled leaf cultivar producent higher yield of leaves with favourable percentage of blades and was a richer source of vitamin C, with higher tendency than Titan for nitrates accumulation. Single preplant nitrogen application was preferable
for leaf growth and yield only in the first term of harvest which contained lower amounts of vitamin C, and showed higher tendency for total N and nitrates accumulation compared with split doses. The most favourable method of leafy parsley nutrition was the application of 80 kg N·ha-1 before seedlings transplanting, and the same amount in two top dressing doses used directly after subsequent harvests. Gradual decrease of dry matter, vitamin C, and nitrates while the increment of total N contents was observed at the subsequent arvests of leaves during the growing period.
Keywords:methods of N application, Paramount cv., Titan cv., crop yield, leaves composition
Barker A.V. Maynard D.N., 1971. Nutritional factors affecting nitrate accumulation in spinach. Comm. Soil Sci. Plant Anal., 2(6), 471–478.
Barker A.V., Peck NH., Mc Donald G.E., 1971. Nitrate accumulation in vegetables. Spinach grown in upland soils. Agron. J. 63, 126–129.
Bąkowski J., Michalik H., 1986. Przydatność niektórych gatunków warzyw do produkcji suszu. Biul. Warzywn. 29, 191–207.
Buchter-Weisbrodt H., 2005. Gemüse- Genuss und Gesundheit: Petersilie. Gemüse. 5, 40.
Cantliffe D.J., 1972. Nitrate accumulation in spinach grown at different temperatures. J. Amer. Soc. Hort. Sci. 97(5), 674–676.
Diaz-Maroto M.C., Perez-Coello M.S., Cabezudo M.D., 2002. Effect of different drying methods on the volatile components of parsley (Petrosolinum crispum L.) Europ. Food Res. Technol., 215, 227–234.
Dyduch J., Janowska K., 2004. Plonowanie kilku odmian pietruszki naciowej Petroselinum sativum L. ssp.crispum. Acta Sci. Pol., Hortorum Cultus. 3(1), 145–151.
Frota J.N.E., Tucker T.C., 1972.Temperature influence on ammonium and nitrate absorption by lettuce. Soil. Sci. Soc. Amer. Proc. 36, 97–100.
Grzeszczuk M., Jadczak D., Orłowski M., 2005.The estimation of biological value of leafy type parsley and its suitability for freezing. Hort. Vegetable Growing, 24(3), 387–394.
Kmiecik W., 1995. Wpływ temperatury suszenia i okresu przechowywania suszu z liści pietruszki na jego zasobność w witaminę C. Bromat. Chem. Toksykol. 28/3, 235–239.
Kmiecik W., Lisiewska Z., 1999. Comparison of leaf yields and chemical composition of the Hamburg and leafy types of parsley. I. Leaf yields and their structure. Folia Hort. 11/1, 53–63.
Krug H., 1991. Gemüseproduktion. Ein Lehr- und Nachschlagewerk für Studium und Praxis. Verlag Paul Parey. Berlin und Hamburg.
Lisiewska Z., Kmiecik W., 1997. Effect of freezing and storage on quality factors in Hamburg and leafy parsley. Food Chem. 60/4, 633–637.
Pasikowska R., Dąbrowska B., Capecka E., 2002. The effect of nitrogen fertilization rate on the yield and quality of two cultivars of parsley (Petroselinum sativum L. ssp. crispum) grown on different soil types. Folia Hort. 14/1, 177–185.
Rumpel J., Kaniszewski S., 1994. Influence of nitrogen fertilization on yield and nitrate nitrogen content of turnip-rooted parsley. Acta Hort. 371, 413–416.
Sady W., 2006. Nawożenie warzyw polowych. Wyd. Plantpress. Kraków.
Simon J.E., Quinn J., 1988. Characterization of essential oil of parsley. J. Agric Food Chem. 36, 467–472.
Wills R.B.H., Lim J.S.K., Greenfield H., 1986. Composition of Australian foods. Leafy, stem and other vegetables. Food Technol. 10, 416–417.
Articles are made available under the conditions CC BY 4.0 (until 2020 under the conditions CC BY-NC-ND 4.0).
Submission of the paper implies that it has not been published previously, that it is not under consideration for publication elsewhere.
The author signs a statement of the originality of the work, the contribution of individuals, and source of funding.