Abstract
Verticillium dahliae, the causal agent of Verticillium wilt of strawberry, is a major soilborne pathogen in California strawberry production.Recent shifts in disease management have necessitated alternative methods for disease control.Two field experiments were conducted to examine the efficacy of sequential fumigant applications for crop termination and bed fumigation to reduce Verticillium dahliae inoculum density in a naturally infested field.Fumigant efficacy was evaluated for crop termination and for reducing pathogen survival in host tissue.Crop termination was conducted using metam potassium and metam sodium.Bed fumigation was conducted using both metam products and chloropicrin.For plots that were subject to both crop termination and bed fumigation, inoculum levels were somewhat reduced (3-6 CFU/g of soil) but not to a level below the disease threshold for strawberry (2 CFU/g of soil).Plots subjected to crop termination with metam potassium and bed fumigation with chloropicrin resulted in the lowest V. dahliae inoculum density.Injury due to crop termination ranged from 53% to 77% at 7 days after fumigation (DAF) and 73-89% at 14 DAF.The odds ratio of V. dahliae survival in the terminated crop were lower than in crops not terminated and V. dahliae survival was less likely at 14, compared to 7 DAF.In the crop terminated with metam potassium, the odds ratio of pathogen survival in the petiole versus the crown was 0.9-1.4.This research shows that crop termination could constitute management strategies for Verticillium wilt of strawberry.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Sequential crop termination and bed fumigation reduced soil inoculum somewhat to 3-6 CFU/g.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- crop termination and bed fumigatione0
- Interactor
- strawberryFragaria ×ananassae0pathogen
- Outcome
- inoculum levelse0
- Direction
- reducede0
- Value
- 3-6 CFU/g of soile0
- Comparator
- disease threshold for strawberrye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“For plots that were subject to both crop termination and bed fumigation, inoculum levels were somewhat reduced (3-6 CFU/g of soil) but not to a level below the disease threshold for strawberry (2 CFU/g of soil).”
t0“strawberry”
Claim · model-written summary
Metam potassium termination with chloropicrin bed fumigation gave lowest V. dahliae inoculum density.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- crop termination with metam potassium and bed fumigation with chloropicrine0
- Interactor
- V. dahliae
Verticillium dahliaee0pathogen - Outcome
- V. dahliae inoculum densitye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plots subjected to crop termination with metam potassium and bed fumigation with chloropicrin resulted in the lowest V. dahliae inoculum density.”
t0“strawberry”
Claim · model-written summary
Crop termination injury was 53% to 77% at seven days.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- crop terminatione0
- Outcome
- Injurye0
- Value
- 53% to 77%e0
- Qualifier
- 7 days after fumigation (DAF)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Injury due to crop termination ranged from 53% to 77% at 7 days after fumigation (DAF)”
t0“strawberry”
Claim · model-written summary
Crop termination injury was 73-89% at 14 days.
- Taxon
- strawberryFragaria ×ananassat0
- Outcome
- 73-89%e0
- Value
- 73-89%e0
- Qualifier
- 14 DAFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“73-89% at 14 DAF”
t0“strawberry”
Claim · model-written summary
V. dahliae survival odds were lower in terminated than unterminated crops.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- terminated crope0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Outcome
- V. dahliae survivale0
- Direction
- lowere0
- Comparator
- crops not terminatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The odds ratio of V. dahliae survival in the terminated crop were lower than in crops not terminated”
t0“strawberry”
Claim · model-written summary
V. dahliae survival was less likely at 14 than seven days after fumigation.
- Taxon
- strawberryFragaria ×ananassat0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Outcome
- V. dahliae survivale0
- Direction
- less likelye0
- Comparator
- 7 DAFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V. dahliae survival was less likely at 14, compared to 7 DAF”
t0“strawberry”
Claim · model-written summary
With metam potassium termination, pathogen survival odds in petioles versus crowns were 0.9-1.4.
- Taxon
- strawberryFragaria ×ananassat0
- Organ / stage
- petiolee0
- Treatment
- metam potassiume0
- Outcome
- pathogen survivale0
- Value
- 0.9-1.4e0
- Comparator
- crowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the crop terminated with metam potassium, the odds ratio of pathogen survival in the petiole versus the crown was 0.9-1.4.”
t0“strawberry”
Claim · model-written summary
The authors propose crop termination for managing Verticillium wilt of strawberry.
- Taxon
- strawberryFragaria ×ananassat0
- Interactor
- VerticilliumVerticilliume0pathogen
- Outcome
- crop termination could constitute management strategies for Verticillium wilt of strawberrye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop termination could constitute management strategies for Verticillium wilt of strawberry”
t0“strawberry”
The same questions in other papers
metam · Verticillium dahliae · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- positive
chloropicrin · Verticillium dahliae · Fragaria x ananassa (strawberry)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →potassium · Verticillium dahliae · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- positive
solarization · Verticillium dahliae · Fragaria x ananassa (strawberry)Results agree
2 papers in the same direction as this paper
- positive
- 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.