Accumulation and reduction of nitrate nitrogen content in Komatsuna (Brassica campestris L.) plants
2009
Kaidzuka, T.(Ibaraki-ken. Agricultural Center, Kasama (Japan). Horticultural Inst.)
It is known that the high concentrations of nitrate nitrogen (N) in leafy vegetables such as Komatsuna, Chinese cabbage, and Spinach might be potential toxicological risk for human health. Some consumers who are interested in the concentration of nitrate N in leafy vegetable are increased, and producers of leafy vegetable is trying to reduce the concentration of nitrate N in leafy vegetable. In this study, we investigated the effects of crop season, amount of N fertilizer, form of fertilizer or cultivar on concentrations of nitrate N in Komatsuna plants. In summer, it was higher concentration of nitrate N than in winter, so we focused on the temperature and the amount of irrigation. Furthermore we confirmed the way that was able to reduce the concentration of nitrate N in plants after harvest.
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