Abstract
Vinca ( Catharanthus roseus ) is a common annual bedding plant species that is susceptible to root and stem rot caused by Phytophthora nicotianae . The experimental design was a 6×2×1 factorial with a total of 12 treatment combinations that had five replications and was repeated twice. Vinca seeds were planted in the middle nine plugs of a 5×5 five-milliliter round plug tray filled with sphagnum peat (control) or peat amended with 2.1 kg/m 3 calcitic lime, 5.9 and 7.3 kg/m 3 potassium silicate alone and combined with 3.0 kg/m 3 calcium sulfate. A peat control drenched with metalaxyl after inoculation was also included. After germination, when the seedlings had one true leaf, half of the treatments were inoculated with 500 cfu of Phytophthora nicotianae per plug cell while the other half remained uninoculated. The percentage of germination for the potassium silicate combined with calcium sulfate (KSCS) (79% and 78%) was similar to the control (86%) and the metalaxyl treatment (83%), whereas the potassium silicate alone had poorer germination (69% and 71%) and plant growth. The percentage of mortality for the KSCS treatment (6% and 14%) was similar to the metalaxyl treatment (9%) but was significantly less than the control (100%). The average dry shoot and root weights for the KSCS treatments (4.4 and 4.9 mg; 2.7 and 2.2 mg) were similar to the metalaxyl treatment (5.0 and 3.6 mg) and the uninoculated control (5.0 and 3.2 mg), but were higher than the potassium silicate treatment alone (2.1 and 1.6 mg; 0.7 and 0.6 mg).
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Claims 10
Claim · model-written summary
The two potassium-silicate plus calcium-sulfate treatments had germination of 79% and 78%, similar to the 86% control.
- Treatment
- potassium silicate combined with calcium sulfate (KSCS)e0
- Outcome
- percentage of germinatione0
- Direction
- similare0
- Value
- 79% and 78%e0
- Qualifier
- 86%e0
- Comparator
- controle0
VincaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of germination for the potassium silicate combined with calcium sulfate (KSCS) (79% and 78%) was similar to the control (86%) and the metalaxyl treatment (83%)”
t0“Vinca”
Claim · model-written summary
The KSCS treatments had germination similar to the 83% metalaxyl treatment.
- Treatment
- potassium silicate combined with calcium sulfate (KSCS)e0
- Outcome
- percentage of germinatione0
- Direction
- similare0
- Value
- 79% and 78%e0
- Qualifier
- 83%e0
- Comparator
- metalaxyl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of germination for the potassium silicate combined with calcium sulfate (KSCS) (79% and 78%) was similar to the control (86%) and the metalaxyl treatment (83%)”
t0“Vinca”
Claim · model-written summary
Potassium silicate alone produced poorer germination, 69% and 71%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas the potassium silicate alone had poorer germination (69% and 71%) and plant growth.”
t0“Vinca”
Claim · model-written summary
Potassium silicate alone produced poorer plant growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas the potassium silicate alone had poorer germination (69% and 71%) and plant growth.”
t0“Vinca”
Claim · model-written summary
KSCS mortality of 6% and 14% was similar to metalaxyl mortality of 9%.
- Treatment
- KSCS treatmente0
- Interactor
- Phytophthora nicotianae
Phytophthora nicotianaee1pathogen - Outcome
- percentage of mortalitye0
- Direction
- similare0
- Value
- 6% and 14%e0
- Qualifier
- 9%e0
- Comparator
- metalaxyl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of mortality for the KSCS treatment (6% and 14%) was similar to the metalaxyl treatment (9%) but was significantly less than the control (100%).”
e1“root and stem rot caused by Phytophthora nicotianae”
t0“Vinca”
Claim · model-written summary
KSCS mortality of 6% and 14% was significantly below the control mortality of 100%.
- Treatment
- KSCS treatmente0
- Interactor
- Phytophthora nicotianaePhytophthora nicotianaee1pathogen
- Outcome
- percentage of mortalitye0
- Direction
- lesse0
- Value
- 6% and 14%e0
- Qualifier
- 100%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of mortality for the KSCS treatment (6% and 14%) was similar to the metalaxyl treatment (9%) but was significantly less than the control (100%).”
e1“root and stem rot caused by Phytophthora nicotianae”
t0“Vinca”
Claim · model-written summary
KSCS shoot dry weights of 4.4 and 4.9 mg were similar to metalaxyl at 5.0 mg and uninoculated control at 5.0 mg.
- Treatment
- KSCS treatmentse0
- Outcome
- dry shoote0
- Direction
- similare0
- Value
- 4.4 and 4.9 mge0
- Qualifier
- 5.0 and 3.6 mge0
- Comparator
- metalaxyl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average dry shoot and root weights for the KSCS treatments (4.4 and 4.9 mg; 2.7 and 2.2 mg) were similar to the metalaxyl treatment (5.0 and 3.6 mg) and the uninoculated control (5.0 and 3.2 mg)”
t0“Vinca”
Claim · model-written summary
KSCS root dry weights of 2.7 and 2.2 mg were similar to metalaxyl at 3.6 mg and uninoculated control at 3.2 mg.
- Treatment
- KSCS treatmentse0
- Outcome
- root weightse0
- Direction
- similare0
- Value
- 2.7 and 2.2 mge0
- Qualifier
- 5.0 and 3.6 mge0
- Comparator
- metalaxyl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average dry shoot and root weights for the KSCS treatments (4.4 and 4.9 mg; 2.7 and 2.2 mg) were similar to the metalaxyl treatment (5.0 and 3.6 mg) and the uninoculated control (5.0 and 3.2 mg)”
t0“Vinca”
Claim · model-written summary
KSCS shoot weights exceeded potassium silicate alone.
- Treatment
- KSCS treatmentse1
- Outcome
- shoote1
- Direction
- highere0
- Qualifier
- 2.1 and 1.6 mge0
- Comparator
- potassium silicate treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but were higher than the potassium silicate treatment alone (2.1 and 1.6 mg; 0.7 and 0.6 mg).”
e1“dry shoot and root weights for the KSCS treatments”
t0“Vinca”
Claim · model-written summary
KSCS root weights exceeded potassium silicate alone.
- Treatment
- KSCS treatmentse1
- Outcome
- root weightse1
- Direction
- highere0
- Qualifier
- 0.7 and 0.6 mge0
- Comparator
- potassium silicate treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but were higher than the potassium silicate treatment alone (2.1 and 1.6 mg; 0.7 and 0.6 mg).”
e1“dry shoot and root weights for the KSCS treatments”
t0“Vinca”
The same questions in other papers
potassium · growth · VincaResults agree
2 papers in the same direction as this paper
- no effect
- negative
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.