Abstract
In this study, the yields, nutritional qualities and nitrate (NO3) content of Chinese kale were studied with two cultivars, following partial replacement of nitrate (20%) with ammonium (NH4), urea and glycine in hydroponics. The results showed that, compared with the full nitrate treatment, ammonium replacement increased the fresh weight by 18.1% and 8.0% of ‘Zaobao’ and ‘Lvbao’ cultivars respectively, whereas urea and glycine replacements decreased the biomass significantly. Adding different nitrogen (N) forms significantly improved the contents of vitamin C, soluble sugar, free amino acid, protein, soluble phenol and flavonoids in Chinese kale. Adding the three alternative N forms also reduced nitrate content significantly, in which glycine replacement was the lowest. According to the results obtained, different forms of N replacement could be used for different purposes. Glycine replacement could be the best alternative only to improve qualities, while ammonium replacement could be the best alternative to improve both the yield and qualities.
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Claims 10
Claim · model-written summary
Ammonium replacement increased fresh weight of Zaobao by 18.1% against full nitrate.
- Taxon
- Chinese kale
Brassica oleracea var. alboglabrat0 - Material
- Zaobaoe0
- Treatment
- ammonium replacemente0
- Outcome
- fresh weighte0
- Direction
- increasede0
- Value
- 18.1%e0
- Comparator
- full nitrate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“compared with the full nitrate treatment, ammonium replacement increased the fresh weight by 18.1% and 8.0% of ‘Zaobao’ and ‘Lvbao’ cultivars respectively”
Claim · model-written summary
Ammonium replacement increased fresh weight of Lvbao by 8.0% against full nitrate.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Material
- Lvbaoe0
- Treatment
- ammonium replacemente0
- Outcome
- fresh weighte0
- Direction
- increasede0
- Value
- 8.0%e0
- Comparator
- full nitrate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“compared with the full nitrate treatment, ammonium replacement increased the fresh weight by 18.1% and 8.0% of ‘Zaobao’ and ‘Lvbao’ cultivars respectively”
Claim · model-written summary
Urea replacement significantly decreased biomass against full nitrate.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- ureae0
- Outcome
- biomasse0
- Direction
- decreasede0
- Comparator
- full nitrate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“compared with the full nitrate treatment, ammonium replacement increased the fresh weight by 18.1% and 8.0% of ‘Zaobao’ and ‘Lvbao’ cultivars respectively, whereas urea and glycine replacements decreased the biomass significantly”
Claim · model-written summary
Glycine replacement significantly decreased biomass against full nitrate.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- glycinee0
- Outcome
- biomasse0
- Direction
- decreasede0
- Comparator
- full nitrate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“compared with the full nitrate treatment, ammonium replacement increased the fresh weight by 18.1% and 8.0% of ‘Zaobao’ and ‘Lvbao’ cultivars respectively, whereas urea and glycine replacements decreased the biomass significantly”
Claim · model-written summary
Alternative nitrogen forms significantly improved vitamin C, soluble sugar and free amino acid contents.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrae0
- Treatment
- different nitrogen (N) formse0
- Outcome
- contents of vitamin C, soluble sugar, free amino acide0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding different nitrogen (N) forms significantly improved the contents of vitamin C, soluble sugar, free amino acid, protein, soluble phenol and flavonoids in Chinese kale”
Claim · model-written summary
Alternative nitrogen forms significantly improved protein, soluble phenol and flavonoid contents.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrae0
- Treatment
- different nitrogen (N) formse0
- Outcome
- protein, soluble phenol and flavonoidse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding different nitrogen (N) forms significantly improved the contents of vitamin C, soluble sugar, free amino acid, protein, soluble phenol and flavonoids in Chinese kale”
Claim · model-written summary
The three alternative nitrogen forms significantly reduced nitrate content.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- three alternative N formse0
- Outcome
- nitrate contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“Adding the three alternative N forms also reduced nitrate content significantly”
Claim · model-written summary
Glycine replacement produced the lowest nitrate content.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- glycine replacemente0
- Outcome
- nitrate contente0
- Direction
- loweste0
- Comparator
- three alternative N formse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“Adding the three alternative N forms also reduced nitrate content significantly, in which glycine replacement was the lowest”
Claim · model-written summary
The authors recommend glycine replacement for quality improvement.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- Glycine replacemente0
- Outcome
- improve qualitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“Glycine replacement could be the best alternative only to improve qualities”
Claim · model-written summary
The authors recommend ammonium replacement for both yield and quality improvement.
- Taxon
- Chinese kaleBrassica oleracea var. alboglabrat0
- Treatment
- ammonium replacemente0
- Outcome
- improve both the yield and qualitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese kale”
e0“ammonium replacement could be the best alternative to improve both the yield and qualities”
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See all 103 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.