Abstract
Nutrient management is an important challenge to agricultural sustainability. In this study, the effects of three nitrogen (N) fertilizer levels (N1 = 0, N2 =150, and N3 = 300 kg ha−1) on growth, chlorophyll content, and antioxidant capacity of two grain sorghum cultivars were investigated in a two-year (2017 and 2018) field trial. The treatments were arranged in a randomized complete block design with three replicates. Nitrogen application (N2 and N3) improved plant growth and antioxidant enzymes activity; compared to the control N1, N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar and increased leaf width by 12.8% and stem weight by 27.4% in CFSH30 cultivar. In 2017 and 2018, increasing nitrogen N2 and N3 enhanced superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities and leaf protein content in both cultivars. While in 2017, chlorophyll content decreased in the CFSH30 cultivar. Our study showed that increased nitrogen supply could improve morpho-physiological activities of sorghum, but N3 was relatively more effective for sorghum growth in Siyong 3180 cultivar compared to CFSH30 cultivar.
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Claims 11
Claim · model-written summary
Nitrogen raised Siyong 3180 germination by 18.7%.
- Material
- Siyong 3180e0
- Treatment
- Ne0
- Outcome
- germinatione0
- Direction
- increasede0
- Value
- 18.7%e0
- Comparator
- control N1e1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar”
t0“Sorghum”
e1“compared to the control N1,”
Claim · model-written summary
Nitrogen raised Siyong 3180 leaf length by 7.5%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar”
t0“Sorghum”
Claim · model-written summary
Nitrogen raised Siyong 3180 leaf weight by 10.8%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar”
t0“Sorghum”
Claim · model-written summary
Nitrogen raised Siyong 3180 specific leaf weight by 11.6%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar”
t0“Sorghum”
Claim · model-written summary
Nitrogen raised Siyong 3180 plant height by 2.5%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N increased germination by 18.7%, leaf length by 7.5%, leaf weight by 10.8%, specific leaf weight by 11.6%, and plant height by 2.5% in Siyong 3180 cultivar”
t0“Sorghum”
Claim · model-written summary
Nitrogen raised CFSH30 leaf width by 12.8%.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf width by 12.8% and stem weight by 27.4% in CFSH30 cultivar.”
t0“Sorghum”
Claim · model-written summary
Nitrogen raised CFSH30 stem weight by 27.4%.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf width by 12.8% and stem weight by 27.4% in CFSH30 cultivar.”
t0“Sorghum”
Claim · model-written summary
Increasing nitrogen enhanced SOD, CAT and POD activity in both cultivars across 2017 and 2018.
- Treatment
- increasing nitrogen N2 and N3e0
- Outcome
- superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activitiese0
- Direction
- enhancede0
- Qualifier
- In 2017 and 2018e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017 and 2018, increasing nitrogen N2 and N3 enhanced superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities and leaf protein content in both cultivars.”
t0“Sorghum”
Claim · model-written summary
Increasing nitrogen enhanced leaf protein content in both cultivars across 2017 and 2018.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017 and 2018, increasing nitrogen N2 and N3 enhanced superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities and leaf protein content in both cultivars.”
t0“Sorghum”
Claim · model-written summary
CFSH30 chlorophyll content decreased in 2017.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While in 2017, chlorophyll content decreased in the CFSH30 cultivar.”
t0“Sorghum”
Claim · model-written summary
N3 was relatively more effective for growth of Siyong 3180 than CFSH30.
- Material
- Siyong 3180e0
- Treatment
- N3e0
- Outcome
- sorghum growthe0
- Direction
- more effectivee0
- Comparator
- CFSH30 cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N3 was relatively more effective for sorghum growth in Siyong 3180 cultivar compared to CFSH30 cultivar.”
t0“Sorghum”
The same questions in other papers
nitrogen · quality: protein · SorghumResults differ
42 papers in the same direction as this paper · 4 in the opposite direction
- positive
- no effect
- no effect
43 papers more in this group
See all 47 papers →nitrogen · growth · SorghumResults differ
80 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- negative
- positive
- positive
89 papers more in this group
See all 93 papers →nitrogen · physiology: antioxidant enzymes · SorghumResults agree
1 paper in the same direction as this paper
- positive
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.