Abstract
Potato (Solanum tuberosum L.) is native to South America and is the main vegetable grown in Brazil and worldwide. One of the diseases that can attack potato crops is the common scab, caused by the bacteria Streptomyces scabies, which affect roots and tubers. The objective of this research was to evaluate the effect of different sources of cultivation on potato crop in the management of common potato scab. The experimental design was in randomized blocks (DBC) containing five treatments urea (45% N), ammonium sulfate (20% N), protected urea (45% N), organomineral (0.75% N) and control (0% N). N) and four replications, in a total of 20 pots. The bacterium was removed from infected potato tubers and isolated in petri dishes containing YMA (Yeast, Manitol, Agar) culture medium. The bacterium was inoculated into the soil 15 times, seven days before planting. Seeds were distributed in pots with a capacity of 8 L, in a proportion of 2:1 (earth and sand), which were placed in a greenhouse. Fertilizing for planting and coverage was carried out according to the requirements of the crops: fertilization with urea and ammonium sulfate was carried out once at planting and twice at the top dressing; fertilizing with protected urea and organomineral was carried out once at planting and once at the top dressing; and nitrogen fertilization was not performed in the control treatment. The tubers were harvested 90 days after sowing. The variables analyzed were severity (graded) and incidence, counting the number of contaminated tubers, tuber weight yield of each plot, number of leaves, number of stems, and plant height. It was observed that the treatments with urea and ammonium sulfate had a lower percentage of common scab incidence, with an average incidence of 6.74% and 8.42%, respectively, followed by protected urea (8.90%). Urea and ammonium sulfate were efficient in reducing potato scab and increasing tuber production.
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Claims 7
Claim · model-written summary
Urea treatment had 6.74% common scab incidence, lower than other treatments.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- ureae0
- Interactor
- Streptomyces scabiesStreptomyces scabieie2pathogene0
- Outcome
- common scab incidencee0
- Direction
- lowere0
- Value
- 6.74%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatments with urea and ammonium sulfate had a lower percentage of common scab incidence, with an average incidence of 6.74% and 8.42%, respectively”
t0“Potato”
e2“the common scab, caused by the bacteria Streptomyces scabies”
Claim · model-written summary
Ammonium sulfate treatment had 8.42% common scab incidence, lower than other treatments.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- ammonium sulfatee0
- Interactor
- Streptomyces scabiesStreptomyces scabieie2pathogene0
- Outcome
- common scab incidencee0
- Direction
- lowere0
- Value
- 8.42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatments with urea and ammonium sulfate had a lower percentage of common scab incidence, with an average incidence of 6.74% and 8.42%, respectively”
t0“Potato”
e2“the common scab, caused by the bacteria Streptomyces scabies”
Claim · model-written summary
Protected urea treatment had 8.90% common scab incidence.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- protected ureae0
- Interactor
- Streptomyces scabiesStreptomyces scabieie2pathogene0
- Outcome
- common scab incidencee1
- Value
- 8.90%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by protected urea (8.90%)”
t0“Potato”
e2“the common scab, caused by the bacteria Streptomyces scabies”
e1“the treatments with urea and ammonium sulfate had a lower percentage of common scab incidence, with an average incidence of 6.74% and 8.42%, respectively”
Claim · model-written summary
Urea reduced potato scab.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Ureae0
- Interactor
- Streptomyces scabiesStreptomyces scabieie2pathogene0
- Outcome
- potato scabe0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea and ammonium sulfate were efficient in reducing potato scab and increasing tuber production”
t0“Potato”
e2“the common scab, caused by the bacteria Streptomyces scabies”
Claim · model-written summary
Ammonium sulfate reduced potato scab.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- ammonium sulfatee0
- Interactor
- Streptomyces scabiesStreptomyces scabieie2pathogene0
- Outcome
- potato scabe0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea and ammonium sulfate were efficient in reducing potato scab and increasing tuber production”
t0“Potato”
e2“the common scab, caused by the bacteria Streptomyces scabies”
Claim · model-written summary
Urea increased tuber production.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Ureae0
- Outcome
- tuber productione0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea and ammonium sulfate were efficient in reducing potato scab and increasing tuber production”
t0“Potato”
Claim · model-written summary
Ammonium sulfate increased tuber production.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- ammonium sulfatee0
- Outcome
- tuber productione0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Urea and ammonium sulfate were efficient in reducing potato scab and increasing tuber production”
t0“Potato”
The same questions in other papers
ammonium sulfate · Streptomyces scabiei · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
ammonium sulfate · yield · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
nitrogen · yield · Solanum tuberosum (potato)Results differ
108 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
128 papers more in this group
See all 132 papers →nitrogen · Streptomyces scabiei · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- 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.