Abstract
The effect of four nitrogen levels (KNO3: 5, 10, 15 and 20 meq L-1) on the production of ricinine was studied using a semi-hydroponic system. The insecticidal activity of methanolic extracts of Ricinus communis L. leaves against Spodoptera frugiperda Smith larvae was also tested. A dosage – response relationship showed strong positive correlation (R2 = 0.92, P ≤ 0.05) between the nitrogen concentration in the hydroponic solution and ricinine percentage in leaves. A strong correlation (R2 = 0.94, P ≤ 0.05) was also shown for nitrogen content in tissues and ricinine percentage. The use of nitrogen in the form of KNO3 increased the production of ricinine, and it also affected mortality of S. frugiperda larvae. LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively. Increased nitrogen concentration in the hydroponic solution associated with increments in leaf area and ricinine concentration. This indicates that nitrogen concentration can be manipulated to improve production of this alkaloid, and the extracts used for crop protection.
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Claims 11
Claim · model-written summary
Ricinine percentage in leaves had a strong positive correlation with the nitrogen concentration in the hydroponic solution.
- Taxon
- Ricinus communis
Ricinus communist0 - Treatment
- nitrogen concentration in the hydroponic solutione1
- Outcome
- ricinine percentage in leavese1
- Direction
- positive correlatione1
- Value
- R2 = 0.92e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e1“strong positive correlation (R2 = 0.92, P ≤ 0.05) between the nitrogen concentration in the hydroponic solution and ricinine percentage in leaves”
Claim · model-written summary
Ricinine percentage had a strong correlation with nitrogen content in tissues.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen content in tissuese2
- Outcome
- ricinine percentagee2
- Direction
- correlatione2
- Value
- R2 = 0.94e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e2“A strong correlation (R2 = 0.94, P ≤ 0.05) was also shown for nitrogen content in tissues and ricinine percentage”
Claim · model-written summary
Nitrogen supplied as KNO3 increased the production of ricinine in Ricinus communis.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen in the form of KNO3e3
- Outcome
- production of ricininee3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e3“The use of nitrogen in the form of KNO3 increased the production of ricinine, and it also affected mortality of S. frugiperda larvae”
Claim · model-written summary
Nitrogen supplied as KNO3 affected the mortality of Spodoptera frugiperda larvae fed on Ricinus communis leaves; the direction is not stated.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen in the form of KNO3e3
- Interactor
- S. frugiperda
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Spodoptera frugiperdae3pest - Outcome
- mortality of S. frugiperda larvaee3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Ricinus communis”
e3“The use of nitrogen in the form of KNO3 increased the production of ricinine, and it also affected mortality of S. frugiperda larvae”
Claim · model-written summary
LC50 of methanolic leaf extracts on S. frugiperda was 13,469.12 for the 20 meq L-1 nitrogen treatment.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen concentrations of 20, 15, 10 and 5 meq L-1e4
- Interactor
- S. frugiperdaSpodoptera frugiperdae4pest
- Outcome
- LC50 for ricine methanolic extractse4
- Value
- 13,469.12e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e4“LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively”
Claim · model-written summary
LC50 of methanolic leaf extracts on S. frugiperda was 15,754.34 for the 15 meq L-1 nitrogen treatment.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen concentrations of 20, 15, 10 and 5 meq L-1e4
- Interactor
- S. frugiperdaSpodoptera frugiperdae4pest
- Outcome
- LC50 for ricine methanolic extractse4
- Value
- 15,754.34e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e4“LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively”
Claim · model-written summary
LC50 of methanolic leaf extracts on S. frugiperda was 16,046.11 for the 10 meq L-1 nitrogen treatment.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen concentrations of 20, 15, 10 and 5 meq L-1e4
- Interactor
- S. frugiperdaSpodoptera frugiperdae4pest
- Outcome
- LC50 for ricine methanolic extractse4
- Value
- 16,046.11e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e4“LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively”
Claim · model-written summary
LC50 of methanolic leaf extracts on S. frugiperda was 18,155.75 for the 5 meq L-1 nitrogen treatment.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen concentrations of 20, 15, 10 and 5 meq L-1e4
- Interactor
- S. frugiperdaSpodoptera frugiperdae4pest
- Outcome
- LC50 for ricine methanolic extractse4
- Value
- 18,155.75e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e4“LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively”
Claim · model-written summary
Increased nitrogen concentration in the hydroponic solution was associated with increments in leaf area and ricinine concentration.
- Taxon
- Ricinus communisRicinus communist0
- Treatment
- nitrogen concentration in the hydroponic solutione5
- Outcome
- leaf area and ricinine concentratione5
- Direction
- incrementse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e5“Increased nitrogen concentration in the hydroponic solution associated with increments in leaf area and ricinine concentration”
Claim · model-written summary
Nitrogen concentration can be manipulated to improve production of ricinine.
- Taxon
- Ricinus communisRicinus communist0
- Outcome
- production of this alkaloide6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e6“nitrogen concentration can be manipulated to improve production of this alkaloid”
Claim · model-written summary
The methanolic extracts of Ricinus communis leaves could be used for crop protection.
- Taxon
- Ricinus communisRicinus communist0
- Outcome
- crop protectione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ricinus communis”
e7“the extracts used for crop protection”
The same questions in other papers
nitrogen · yield · Ricinus communis (castor bean)Positive and negative results
30 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
30 papers more in this group
See all 34 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.