Abstract
Soybean rust (SBR), caused by Phakopsora pachyrhizi, is one of the most destructive fungal diseases affecting soybean production. Silicon (Si) amendments were studied as an alternative strategy to control SBR because this element was reported to suppress a number of plant diseases in other host–pathogen systems. In greenhouse experiments, soybean cultivars inoculated with P. pachyrhizi received soil applications of wollastonite (CaSiO 3 ) (Si at 0, 0.96, and 1.92 t ha –1 ) or foliar applications of potassium silicate (K 2 SiO 3 ) (Si at 0, 500, 1,000, or 2,000 mg kg –1 ). Greenhouse experiment results demonstrated that Si treatments delayed disease onset by approximately 3 days. The area under disease progress curve (AUDPC) of plants receiving Si treatments also was significantly lower than the AUDPC of non-Si-treated plants. For field experiments, an average 3-day delay in disease onset was observed only for soil Si treatments. Reductions in AUDPC of up to 43 and 36% were also observed for soil and foliar Si treatments, respectively. Considering the natural delayed disease onset due to the inability of the pathogen to overwinter in the major soybean production areas of the United States, the delay in disease onset and the final reduction in AUDPC observed by the soil Si treatments used may lead to the development of SBR control practices that can benefit organic and conventional soybean production systems.
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Claims 6
Claim · model-written summary
Greenhouse Si treatment delayed disease onset about three days.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Si treatmentse0
- Interactor
- P. pachyrhiziPhakopsora pachyrhizie0pathogen
- Outcome
- disease onsete0
- Direction
- delayede0
- Value
- approximately 3 dayse0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In greenhouse experiments, soybean cultivars inoculated with P. pachyrhizi received soil applications of wollastonite (CaSiO 3 ) (Si at 0, 0.96, and 1.92 t ha –1 ) or foliar applications of potassium silicate (K 2 SiO 3 ) (Si at 0, 500, 1,000, or 2,000 mg kg –1 ). Greenhouse experiment results demonstrated that Si treatments delayed disease onset by approximately 3 days”
t0“Soybean”
Claim · model-written summary
Greenhouse Si treatment significantly reduced disease progress relative to no Si.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Si treatmentse0
- Outcome
- area under disease progress curve (AUDPC)e0
- Direction
- lowere0
- Comparator
- non-Si-treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The area under disease progress curve (AUDPC) of plants receiving Si treatments also was significantly lower than the AUDPC of non-Si-treated plants”
t0“Soybean”
Claim · model-written summary
Field soil Si delayed disease onset by about three days.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- soil Si treatmentse0
- Outcome
- disease onsete0
- Direction
- delaye0
- Value
- 3-daye0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For field experiments, an average 3-day delay in disease onset was observed only for soil Si treatments”
t0“Soybean”
Claim · model-written summary
Field soil Si reduced disease progress by up to 43%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- soile0
- Outcome
- AUDPCe0
- Direction
- Reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in AUDPC of up to 43 and 36% were also observed for soil and foliar Si treatments, respectively”
t0“Soybean”
Claim · model-written summary
Field foliar Si reduced disease progress by up to 36%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- foliar Si treatmentse0
- Outcome
- AUDPCe0
- Direction
- Reductionse0
- Value
- 36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in AUDPC of up to 43 and 36% were also observed for soil and foliar Si treatments, respectively”
t0“Soybean”
Claim · model-written summary
The authors suggest soil Si may support soybean rust control practices.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- SBR control practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soil Si treatments used may lead to the development of SBR control practices that can benefit organic and conventional soybean production systems”
t0“Soybean”
The same questions in other papers
silicon atom · Phakopsora pachyrhizi · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- positive
- positive
silicon atom · disease · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
soil · disease · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- no effect
application · disease · Glycine max (soybean)Positive and negative results
45 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
50 papers more in this group
See all 54 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.