Abstract
BACKGROUND: Phytophthora blight induced by Phytophthora capsici is responsible for serious yield loss in vegetable production in the United States and other countries. This study was conducted to evaluate the efficacy of Brassica cover crops used as soil amendments for managing Phytophthora blight of squash. RESULTS: In greenhouse studies, disease incidence on squash plants was significantly reduced by soil amendment with mustard shoots or roots used at 1 and 2.5% (plant tissue/soil, w/w). The shoots of canola used at 1 or 2.5% also suppressed disease, while the roots of canola or other crops did not reduce disease significantly. In field studies, soil amendments with mustard and canola provided the greatest disease reduction and increased squash yield significantly compared with the non-treated control. Mustard and canola did not appear to be susceptible to P. capsici. CONCLUSION: The results indicated that some Brassica crops, particularly mustard and canola, had the potential to significantly reduce Phytophthora blight on squash when used as soil amendments. As P. capsici has a remarkable ability to develop resistance to chemical fungicides, use of effective Brassica cover crops could be a biorational alternative to fungicides and a valuable component in developing integrated disease management programs.
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Claims 7
Claim · model-written summary
Mustard shoots or roots at 1 and 2.5% significantly reduced squash disease incidence in greenhouse studies.
- Taxon
- squashe0
- Treatment
- soil amendment with mustard shoots or roots used at 1 and 2.5% (plant tissue/soil, w/w)e0
- Interactor
- Phytophthora
Phytophthorat0pathogen - Outcome
- disease incidence on squash plantse0
- Direction
- reducede0
- Setting
- greenhouse studiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In greenhouse studies, disease incidence on squash plants was significantly reduced by soil amendment with mustard shoots or roots used at 1 and 2.5% (plant tissue/soil, w/w).”
t0“Phytophthora blight on squash”
Claim · model-written summary
Canola shoots at 1 or 2.5% suppressed squash disease.
- Taxon
- squasht0
- Treatment
- shoots of canola used at 1 or 2.5%e0
- Interactor
- PhytophthoraPhytophthorat0pathogen
- Outcome
- Phytophthora blightt0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoots of canola used at 1 or 2.5% also suppressed disease”
t0“Phytophthora blight on squash”
Claim · model-written summary
Canola roots and roots of other crops did not significantly reduce squash disease.
- Taxon
- squasht0
- Treatment
- roots of canola or other cropse0
- Interactor
- PhytophthoraPhytophthorat0pathogen
- Outcome
- Phytophthora blightt0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots of canola or other crops did not reduce disease significantly”
t0“Phytophthora blight on squash”
Claim · model-written summary
Field mustard and canola amendments gave the greatest squash disease reduction versus untreated control.
- Taxon
- squashe0
- Treatment
- soil amendments with mustard and canolae0
- Interactor
- PhytophthoraPhytophthorat0pathogen
- Outcome
- Phytophthora blightt0
- Direction
- greatest disease reductione0
- Comparator
- non-treated controle0
- Setting
- field studiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field studies, soil amendments with mustard and canola provided the greatest disease reduction and increased squash yield significantly compared with the non-treated control.”
t0“Phytophthora blight on squash”
Claim · model-written summary
Field mustard and canola amendments significantly increased squash yield versus untreated control.
Verbatim
e0“In field studies, soil amendments with mustard and canola provided the greatest disease reduction and increased squash yield significantly compared with the non-treated control.”
Claim · model-written summary
Mustard and canola did not appear susceptible to P. capsici.
- Taxon
- Mustard and canolae0
- Interactor
- P. capsici
.jpg?width=60)
Phytophthora capsicie0pathogen - Outcome
- did not appear to be susceptiblee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Mustard and canola did not appear to be susceptible to P. capsici.”
Claim · model-written summary
The authors suggest effective Brassica cover crops as a fungicide alternative in integrated squash disease management.
Verbatim
e0“use of effective Brassica cover crops could be a biorational alternative to fungicides and a valuable component in developing integrated disease management programs.”
t0“Phytophthora blight on squash”
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