Abstract
The effect of fibrous root infection by S. ipomoea on disease on storage roots and production of marketable yield in the susceptible sweetpotato cultivar `Jewel' was evaluated in field experiments in 3 years. Drip irrigation (main plots) reduced disease on fibrous roots in plots not treated with sulfur or fumigated, but did not significantly increase yields in any year. Sulfur (subplots) reduced the severity of the disease on fibrous roots in nonfumigated plots in 2 years, but reduced yields by 21-33% in 2 of 3 years. Fumigation of soil with Telone C-17 (sub-subplots) reduced the percentage of diseased storage roots produced per plot from 71%, 8%, and 22% in nonfumigated plots to 52%, 3% and 6% in fumigated plots in 1988, 1989 and 1990, respectively and reduced the severity of disease on fibrous roots in all years. Only fumigation increased the yield of marketable storage roots by 68% and 19% in two of three years. The severity of disease on fibrous roots was positively correlated with the percentage of diseased storage roots produced per plot ( r = 0.84) and the number of diseased storage roots produced per plant ( r = 0.64), and was negatively correlated with the number of storage roots produced per plant ( r = -0.66). Yield of marketable storage roots was negatively correlated with both the severity of disease on fibrous roots ( r = -0.77) and the percentage of diseased storage roots produced per plot ( r = -0.73). These data demonstrate the importance of fibrous root disease in this pathosystem. Management strategies that reduce disease on fibrous roots may ultimately lead to increased yield of storage roots.
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Claims 16
Claim · model-written summary
Drip irrigation reduced fibrous root disease in untreated plots.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- Drip irrigatione0
- Interactor
- STREPTOMYCES IPOMOEAStreptomyces ipomoeaet0pathogen
- Outcome
- disease on fibrous rootse0
- Direction
- reducede0
- Comparator
- plots not treated with sulfur or fumigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Drip irrigation (main plots) reduced disease on fibrous roots in plots not treated with sulfur or fumigated”
t0“STREPTOMYCES IPOMOEA ON YIELD OF SWEETPOTATO”
Claim · model-written summary
Drip irrigation did not significantly increase yield in any year.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Drip irrigatione1
- Interactor
- STREPTOMYCES IPOMOEAStreptomyces ipomoeaet0pathogen
- Outcome
- yieldse0
- Direction
- did not significantly increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but did not significantly increase yields in any year”
t0“STREPTOMYCES IPOMOEA ON YIELD OF SWEETPOTATO”
e1“Drip irrigation (main plots) reduced disease on fibrous roots in plots not treated with sulfur or fumigated”
Claim · model-written summary
Sulfur reduced fibrous root disease severity in nonfumigated plots in two years.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Sulfure0
- Interactor
- STREPTOMYCES IPOMOEAStreptomyces ipomoeaet0pathogen
- Outcome
- severity of the disease on fibrous rootse0
- Direction
- reducede0
- Qualifier
- in 2 yearse0
- Comparator
- nonfumigated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur (subplots) reduced the severity of the disease on fibrous roots in nonfumigated plots in 2 years”
t0“STREPTOMYCES IPOMOEA ON YIELD OF SWEETPOTATO”
Claim · model-written summary
Sulfur reduced yields by 21-33% in two of three years.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Sulfure1
- Outcome
- yieldse0
- Direction
- reducede0
- Value
- 21-33%e0
- Qualifier
- in 2 of 3 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but reduced yields by 21-33% in 2 of 3 years”
t0“SWEETPOTATO”
e1“Sulfur (subplots) reduced the severity of the disease on fibrous roots in nonfumigated plots in 2 years”
Claim · model-written summary
Telone C-17 fumigation reduced diseased storage roots from 71% to 52% in 1988.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Fumigation of soil with Telone C-17e0
- Outcome
- percentage of diseased storage roots produced per plote0
- Direction
- reducede0
- Value
- 52%e0
- Qualifier
- 1988e0
- Comparator
- nonfumigated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation of soil with Telone C-17 (sub-subplots) reduced the percentage of diseased storage roots produced per plot from 71%, 8%, and 22% in nonfumigated plots to 52%, 3% and 6% in fumigated plots in 1988, 1989 and 1990”
t0“SWEETPOTATO”
Claim · model-written summary
Telone C-17 fumigation reduced diseased storage roots from 8% to 3% in 1989.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Fumigation of soil with Telone C-17e0
- Outcome
- percentage of diseased storage roots produced per plote0
- Direction
- reducede0
- Value
- 3%e0
- Qualifier
- 1989e0
- Comparator
- nonfumigated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation of soil with Telone C-17 (sub-subplots) reduced the percentage of diseased storage roots produced per plot from 71%, 8%, and 22% in nonfumigated plots to 52%, 3% and 6% in fumigated plots in 1988, 1989 and 1990”
t0“SWEETPOTATO”
Claim · model-written summary
Telone C-17 fumigation reduced diseased storage roots from 22% to 6% in 1990.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Fumigation of soil with Telone C-17e0
- Outcome
- percentage of diseased storage roots produced per plote0
- Direction
- reducede0
- Value
- 6%e0
- Qualifier
- 1990e0
- Comparator
- nonfumigated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation of soil with Telone C-17 (sub-subplots) reduced the percentage of diseased storage roots produced per plot from 71%, 8%, and 22% in nonfumigated plots to 52%, 3% and 6% in fumigated plots in 1988, 1989 and 1990”
t0“SWEETPOTATO”
Claim · model-written summary
Fumigation reduced fibrous root disease severity in all years.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- Fumigation of soil with Telone C-17e1
- Outcome
- severity of disease on fibrous rootse0
- Direction
- reducede0
- Qualifier
- in all yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced the severity of disease on fibrous roots in all years”
t0“SWEETPOTATO”
e1“Fumigation of soil with Telone C-17 (sub-subplots) reduced the percentage of diseased storage roots produced per plot from 71%, 8%, and 22% in nonfumigated plots to 52%, 3% and 6% in fumigated plots in 1988, 1989 and 1990”
Claim · model-written summary
Fumigation increased marketable storage-root yield by 68% in one year.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- fumigatione0
- Outcome
- yield of marketable storage rootse0
- Direction
- increasede0
- Value
- 68%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only fumigation increased the yield of marketable storage roots by 68% and 19% in two of three years”
t0“SWEETPOTATO”
Claim · model-written summary
Fumigation increased marketable storage-root yield by 19% in another year.
- Taxon
- sweetpotatoIpomoea batatast0
- Treatment
- fumigatione0
- Outcome
- yield of marketable storage rootse0
- Direction
- increasede0
- Value
- 19%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only fumigation increased the yield of marketable storage roots by 68% and 19% in two of three years”
t0“SWEETPOTATO”
Claim · model-written summary
Fibrous-root disease severity correlated positively with diseased storage-root percentage (r=0.84).
- Taxon
- sweetpotatoIpomoea batatast0
- Outcome
- percentage of diseased storage roots produced per plote0
- Direction
- positively correlatede0
- Value
- r = 0.84e0
- Comparator
- severity of disease on fibrous rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The severity of disease on fibrous roots was positively correlated with the percentage of diseased storage roots produced per plot ( r = 0.84)”
t0“SWEETPOTATO”
Claim · model-written summary
Fibrous-root disease severity correlated positively with diseased storage roots per plant (r=0.64).
- Taxon
- sweetpotatoIpomoea batatast1
- Outcome
- number of diseased storage roots produced per plante0
- Direction
- positively correlatedt0
- Value
- r = 0.64e0
- Comparator
- severity of disease on fibrous rootst0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of diseased storage roots produced per plant ( r = 0.64)”
t0“The severity of disease on fibrous roots was positively correlated with the percentage of diseased storage roots produced per plot ( r = 0.84) and the number of diseased storage roots produced per plant ( r = 0.64)”
t1“SWEETPOTATO”
Claim · model-written summary
Fibrous-root disease severity correlated negatively with storage-root number per plant (r=-0.66).
- Taxon
- sweetpotatoIpomoea batatast1
- Outcome
- number of storage roots produced per plante0
- Direction
- negatively correlatede0
- Value
- r = -0.66e0
- Comparator
- severity of disease on fibrous rootst0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was negatively correlated with the number of storage roots produced per plant ( r = -0.66)”
t0“The severity of disease on fibrous roots”
t1“SWEETPOTATO”
Claim · model-written summary
Marketable yield correlated negatively with fibrous-root disease severity (r=-0.77).
- Taxon
- sweetpotatoIpomoea batatast0
- Outcome
- Yield of marketable storage rootse0
- Direction
- negatively correlatede0
- Value
- r = -0.77e0
- Comparator
- severity of disease on fibrous rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of marketable storage roots was negatively correlated with both the severity of disease on fibrous roots ( r = -0.77)”
t0“SWEETPOTATO”
Claim · model-written summary
Marketable yield correlated negatively with diseased storage-root percentage (r=-0.73).
- Taxon
- sweetpotatoIpomoea batatast1
- Outcome
- Yield of marketable storage rootst0
- Direction
- negatively correlatedt0
- Value
- r = -0.73e0
- Comparator
- percentage of diseased storage roots produced per plote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of diseased storage roots produced per plot ( r = -0.73)”
t0“Yield of marketable storage roots was negatively correlated”
t1“SWEETPOTATO”
Claim · model-written summary
Management that reduces fibrous-root disease may increase storage-root yield.
- Taxon
- sweetpotatoIpomoea batatast0
- Outcome
- Management strategies that reduce disease on fibrous rootse0
- Qualifier
- may ultimately lead to increased yield of storage rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Management strategies that reduce disease on fibrous roots may ultimately lead to increased yield of storage roots.”
t0“SWEETPOTATO”
The same questions in other papers
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solarization · quality: postharvest · Ipomoea batatas (sweet potato)Results agree
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solarization · disease · Ipomoea batatas (sweet potato)Results agree
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- 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.