Abstract
SUMMARY In field experiments in 1981 and 1982, uninoculated seed tubers (cv. Désirée) and those inoculated with Erwinia carotovora subsp. atroseptica at the rose (apical) or heel (stolon attachment) ends were planted at normal (35 cm) or double spacing; in additional plots, inoculated and uninoculated tubers were planted alternately. Inoculation, especially at the rose end, decreased plant height and sometimes resulted in blackleg symptoms. Individual plant yields were recorded at the end of the season. In plots of uniform seed type at normal spacing, inoculation decreased total yield compared with uninoculated by 12–13% (heel‐end inoculation) or 26–40% (rose‐end inoculation). At double spacing, yields increased compared with normal spacing by 44–58% (uninoculated or heel‐end inoculation) or 30–39% (rose‐end inoculation). When rose‐end‐inoculated and uninoculated seed tubers were planted alternately, inoculated plants yielded less and uninoculated plants more than in plots planted throughout with the same seed treatment. The abilities of inoculated and uninoculated plants to compensate for weak or missing neighbours were combined using equations to predict the yields of crops with different proportions of diseased or missing plants.
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Claims 10
Claim · model-written summary
Inoculation reduced plant height, especially at the rose end.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- Inoculatione0
- Interactor
- Erwinia carotovora subsp. atroseptica
Pectobacterium atrosepticumt0pathogen - Outcome
- plant heighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation, especially at the rose end, decreased plant height”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Inoculation sometimes caused blackleg symptoms.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Inoculatione0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- blackleg symptomse0
- Qualifier
- sometimese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation, especially at the rose end, decreased plant height and sometimes resulted in blackleg symptoms”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Heel-end inoculation reduced total yield by 12–13% at normal spacing.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- heel‐end inoculatione0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- total yielde0
- Direction
- decreasede0
- Value
- 12–13%e0
- Comparator
- uninoculatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation decreased total yield compared with uninoculated by 12–13% (heel‐end inoculation)”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Rose-end inoculation reduced total yield by 26–40% at normal spacing.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- rose‐end inoculatione0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- total yielde0
- Direction
- decreasede0
- Value
- 26–40%e0
- Comparator
- uninoculatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation decreased total yield compared with uninoculated by 12–13% (heel‐end inoculation) or 26–40% (rose‐end inoculation)”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Double spacing raised uninoculated plant yield by 44–58%.
- Taxon
- potatoSolanum tuberosumt0
- Material
- uninoculatede0
- Treatment
- double spacinge0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 44–58%e0
- Comparator
- normal spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At double spacing, yields increased compared with normal spacing by 44–58% (uninoculated or heel‐end inoculation)”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Double spacing raised heel-end inoculated plant yield by 44–58%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- double spacinge0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 44–58%e0
- Qualifier
- heel‐end inoculatione0
- Comparator
- normal spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At double spacing, yields increased compared with normal spacing by 44–58% (uninoculated or heel‐end inoculation)”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Double spacing raised rose-end inoculated plant yield by 30–39%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- double spacinge0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 30–39%e0
- Qualifier
- rose‐end inoculatione0
- Comparator
- normal spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At double spacing, yields increased compared with normal spacing by 44–58% (uninoculated or heel‐end inoculation) or 30–39% (rose‐end inoculation)”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Alternating rose-end inoculated and uninoculated tubers reduced yields of inoculated plants.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- planted alternatelye0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- inoculated plants yieldede0
- Direction
- lesse0
- Comparator
- plots planted throughout with the same seed treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When rose‐end‐inoculated and uninoculated seed tubers were planted alternately, inoculated plants yielded less and uninoculated plants more than in plots planted throughout with the same seed treatment”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Alternating rose-end inoculated and uninoculated tubers increased yields of uninoculated plants.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- planted alternatelye0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- uninoculated plantse0
- Direction
- moree0
- Comparator
- plots planted throughout with the same seed treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When rose‐end‐inoculated and uninoculated seed tubers were planted alternately, inoculated plants yielded less and uninoculated plants more than in plots planted throughout with the same seed treatment”
t0“Erwinia carotovora subsp. atroseptica (blackleg) on potato plants”
Claim · model-written summary
Equations combined compensatory growth abilities to predict yields at different diseased-plant proportions.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- predict the yields of cropse0
- Value
- different proportions of diseased or missing plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abilities of inoculated and uninoculated plants to compensate for weak or missing neighbours were combined using equations to predict the yields of crops with different proportions of diseased or missing plants”
t0“potato plants”
The same questions in other papers
inoculation · Pectobacterium atrosepticum · Solanum tuberosum (potato)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
4 papers more in this group
See all 8 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.