Cultivation of Brassica pekinensis under different forms of nitrogen nutrition

A pot trial was aimed to investigate the effect of different forms of nitrogen fertilizer on the aboveground phytomass yield, vitamin C content and uptake of some macroelements by Brassica pekinensis. The trial was conducted in 2000 and 2001 in pots containing 10 kg of loamy brown soil. Optimized NP...

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Bibliographic Details
Published in:Horticultural science (Praha) 2003-09, Vol.30 (3), p.112-115
Main Authors: Ducsay, L., Varga, L.
Format: Article
Language:English
Subjects:
Ammonium nitrate
Ammonium sulfate
Ascorbic acid
Brassica
Brassica oleracea
brassica pekinensis
Brown soils
Chinese cabbage
Fertilizers
macroelements
Nitrogen
npk nutrition
Nutrients
Nutrition
Optimization
Vitamin C
Yield
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Summary:A pot trial was aimed to investigate the effect of different forms of nitrogen fertilizer on the aboveground phytomass yield, vitamin C content and uptake of some macroelements by Brassica pekinensis. The trial was conducted in 2000 and 2001 in pots containing 10 kg of loamy brown soil. Optimized NPK nutrition with the rate of 90.9 kg/ha N increased phytomass yields of Chinese cabbage in all treatments compared to the unfertilized control. The most marked increase (by 55.6%) of yield was obtained when N was applied in the form of (NH4)2 SO4. The yields in the other treatments declined as follows: NH4NO3 > Mg (NO3)2 > KNO3 > DAM-390. Positive effects of full NPK nutrition on vitamin C content were determined. Depending on the forms of N fertilizer, the content of vitamin C in fresh mass of cabbage decreased in the following order: DAM-390 (629.0 mg/kg of fresh mass) >Mg(NO3)2 > KNO3 > NH4NO3 > (NH4)2SO4. Optimization of NPK rates contributed to the increase in N, P, K, Ca, Mg and S uptake by the yield of final product in comparison with unfertilized control. The highest uptake of nutrients was determined in the treatment with N applied in the form of (NH4)2SO4.
ISSN:0862-867X
1805-9333
DOI:10.17221/3871-HORTSCI