Effect of different nitrogen fertilization regimes on the chemical composition of field-grown eggplants

• Autorzy: Adamczewska-Sowinska K. , Krygier M.

Warianty tytułu

PL

Wpływ zróżnicowanego nawożenia azotem na skład chemiczny owoców oberżyny w uprawie polowej

• Języki publikacji: EN

Abstrakty

EN

Eggplant is a vegetable which deserves our interest owing to its high nutritive value and a wide range of possible cooking recipes. The biological value of this vegetable depends on several biotic and abiotic factors. The aim of this research has been to determine the effect of nitrogen fertilization methods on the quality of eggplant fruits. Application of ammonium sulphate, ammonium nitrate and Entec 26, a slow-release fertilizer containing a nitrification inhibitor, was tested in a three–factorial experiment. The fertilizers were applied once, before planting, making use of the whole dose (100, 150 and 200 kg N ha–1), or twice, divided into a dose given before the growing period and another one supplied as top dressing (75+25, 100+50, 100+100 kg N ha–1). The eggplant fruits contained on average 6.80% – 8.06% of dry matter, 1.85-2.48% of reducing sugars and 2.00- -2.56% of total sugars, 10.58 mg 100 g–1 f.m. of vitamin C, 4.27-6.56 mg 100 g–1 f.m. of anthocyanins, 50.70-71.06 mg 100 g–1 f.m. of polyphenols. The mean content of P in dry matter was 0.33%, K – 3.99%, Mg – 0.25% and Ca – 0.25%. Significant differences in the quality of eggplant fruits were demonstrated between particular years of cultivation. The biological value of eggplant fruits did not depend on the method of nitrogen fertilization.

PL

• Wydawca: -
• Czasopismo: Journal of Elementology
• Rocznik: 2013
• Tom: 18
• Numer: 4
• Opis fizyczny: p.553-564,ref.

Twórcy

autor

Adamczewska-Sowinska K.

• Department of Horticulture, University of Environmental and Life Sciences in Wroclaw, pl.Grunwaldzki 24a, 50-363 Wroclaw, Poland

autor

Krygier M.

• Department of Horticulture, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland

Uwagi

PL

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