Abstract
The nitrogen requirements of flowering Chinese cabbage are unknown. Our study aimed at investigating the effect of varied nitrogen nutrition levels (including 50, 70, 90, 110, and 130 mg N per dm3, described as N-50 to N-130, respectively) on the yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee) grown in two varied soilless cultivation systems (substrate and hydroponic) and seasons (spring and autumn). We confirmed that the intensity of the nitrogen nutrition modified the yield of plants within a range of 50 to 90 mg N; the yields were increased; however, the higher N concentrations were not effective. In both cultivation systems, the content of K, Ca, and Fe in leaves was higher in autumn compared to spring. Nitrogen nutrition improved the weight of plants—an effect that varied depending on the system of cultivation—and increased the phenolic content. N-90 was the optimal level of nitrogen nutrition. More intensive N-nutrition did not significantly modify plant yields or phenolic content. We Concluded that N fertilisation might be an effective tool to obtain plants with high bioactive compound content.
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Claims 8
Claim · model-written summary
Nitrogen nutrition within 50 to 90 mg N per dm3 increased the yield of flowering Chinese cabbage.
- Taxon
- flowering Chinese cabbage
Brassica rapa subsp. pekinensise0 - Treatment
- nitrogen nutritione1
- Outcome
- yield of plantse1
- Direction
- increasede1
- Qualifier
- within a range of 50 to 90 mg Ne1
- Setting
- substrate and hydroponice2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“We confirmed that the intensity of the nitrogen nutrition modified the yield of plants within a range of 50 to 90 mg N; the yields were increased; however, the higher N concentrations were not effective”
e2“grown in two varied soilless cultivation systems (substrate and hydroponic) and seasons (spring and autumn)”
Claim · model-written summary
Nitrogen levels above 90 mg N per dm3 did not increase the yield of flowering Chinese cabbage.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- higher N concentrationse1
- Outcome
- yield of plantse1
- Direction
- were not effectivee1
- Comparator
- within a range of 50 to 90 mg Ne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“We confirmed that the intensity of the nitrogen nutrition modified the yield of plants within a range of 50 to 90 mg N; the yields were increased; however, the higher N concentrations were not effective”
Claim · model-written summary
Nitrogen nutrition improved the weight of flowering Chinese cabbage plants, with the effect varying by cultivation system.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- Nitrogen nutritione1
- Outcome
- weight of plantse1
- Direction
- improvede1
- Qualifier
- an effect that varied depending on the system of cultivatione1
- Setting
- system of cultivatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“Nitrogen nutrition improved the weight of plants—an effect that varied depending on the system of cultivation—and increased the phenolic content”
Claim · model-written summary
Nitrogen nutrition increased the phenolic content of flowering Chinese cabbage.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- Nitrogen nutritione1
- Outcome
- phenolic contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“Nitrogen nutrition improved the weight of plants—an effect that varied depending on the system of cultivation—and increased the phenolic content”
Claim · model-written summary
Leaf K, Ca and Fe contents of flowering Chinese cabbage were higher in autumn than in spring.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Organ / stage
- leavese1
- Treatment
- autumne1
- Outcome
- content of K, Ca, and Fe in leavese1
- Direction
- highere1
- Comparator
- springe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“In both cultivation systems, the content of K, Ca, and Fe in leaves was higher in autumn compared to spring”
Claim · model-written summary
N-90 was the optimal nitrogen nutrition level for flowering Chinese cabbage.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Outcome
- optimal level of nitrogen nutritione1
- Qualifier
- N-90e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“N-90 was the optimal level of nitrogen nutrition”
Claim · model-written summary
More intensive N-nutrition did not significantly change yields or phenolic content of flowering Chinese cabbage compared with N-90.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- More intensive N-nutritione2
- Outcome
- plant yields or phenolic contente2
- Direction
- did not significantly modifye2
- Comparator
- N-90e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“N-90 was the optimal level of nitrogen nutrition”
e2“More intensive N-nutrition did not significantly modify plant yields or phenolic content”
Claim · model-written summary
Nitrogen fertilisation may be an effective tool to obtain flowering Chinese cabbage with high bioactive compound content.
- Taxon
- flowering Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- N fertilisatione1
- Outcome
- plants with high bioactive compound contente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee)”
e1“We Concluded that N fertilisation might be an effective tool to obtain plants with high bioactive compound content”
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