Abstract
Alternaria leaf blight, caused by the fungus Alternaria dauci, is considered to be the most common and destructive disease in carrot crops in Brazil and worldwide. To evaluate the effectiveness of different fungicides in controlling Alternaria leaf blight, we conducted an experiment using the cultivar 'Verano' in Andradas, Minas Gerais, from February to April 2017. A randomized complete block design was used with seven treatment and four replicate plots of 4 m 2 each. Six applications of 400 L/ha were applied at 7-day intervals. The severity of the disease was determined based on the percentage of leaf area affected by the disease (0 to 100%). The results of four evaluations were used to calculate the area under the disease-progress curve. All fungicides significantly reduced the severity and progression of the disease compared to the control. Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha). Azoxystrobin (0.12 kg c.p./ha) was the least effective fungicide. None of the tested fungicides were phytotoxic to the carrot crop.
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Claims 8
Claim · model-written summary
All tested fungicides significantly reduced Alternaria leaf blight severity and progression in carrot compared with control.
- Taxon
- carrot
Daucus carotat0 - Treatment
- fungicidese0
- Interactor
- Alternaria dauciAlternaria daucie1pathogen
- Outcome
- severity and progression of the diseasee0
- Direction
- reducede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fungicides significantly reduced the severity and progression of the disease compared to the control.”
t0“carrot crops”
e1“Alternaria dauci”
Claim · model-written summary
Fluxapyroxad plus pyraclostrobin was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha) for carrot leaf blight control.
- Taxon
- carrotDaucus carotat0
- Treatment
- Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha)e0
- Outcome
- effectivenesse0
- Direction
- more effectivee0
- Comparator
- boscalid + kresoxim-methyl (0.5 L c.p./ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha).”
t0“carrot crops”
Claim · model-written summary
Fluxapyroxad plus pyraclostrobin was more effective than copper hydroxide (1.5 kg c.p./ha) for carrot leaf blight control.
- Taxon
- carrotDaucus carotat0
- Treatment
- Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha)e0
- Outcome
- effectivenesse0
- Direction
- more effectivee0
- Comparator
- copper hydroxide (1.5 kg c.p./ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha).”
t0“carrot crops”
Claim · model-written summary
Fluxapyroxad plus pyraclostrobin was more effective than azoxystrobin (0.12 kg c.p./ha) for carrot leaf blight control.
- Taxon
- carrotDaucus carotat0
- Treatment
- Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha)e0
- Outcome
- effectivenesse0
- Direction
- more effectivee0
- Comparator
- azoxystrobin (0.12 kg c.p./ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha).”
t0“carrot crops”
Claim · model-written summary
Fluxapyroxad plus pyraclostrobin was similar in effectiveness than pyraclostrobin + metiram (2.0 kg c.p./ha) for carrot leaf blight control.
- Taxon
- carrotDaucus carotat0
- Treatment
- Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha)e0
- Outcome
- effectivenesse0
- Direction
- similar in effectivenesse0
- Comparator
- pyraclostrobin + metiram (2.0 kg c.p./ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha).”
t0“carrot crops”
Claim · model-written summary
Fluxapyroxad plus pyraclostrobin was similar in effectiveness than boscalid (0.15 kg c.p./ha) for carrot leaf blight control.
- Taxon
- carrotDaucus carotat0
- Treatment
- Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha)e0
- Outcome
- effectivenesse0
- Direction
- similar in effectivenesse0
- Comparator
- boscalid (0.15 kg c.p./ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fluxapyroxad + pyraclostrobin (0.3 L c.p./ha) was more effective than boscalid + kresoxim-methyl (0.5 L c.p./ha), copper hydroxide (1.5 kg c.p./ha), and azoxystrobin (0.12 kg c.p./ha), but similar in effectiveness to pyraclostrobin + metiram (2.0 kg c.p./ha) and boscalid (0.15 kg c.p./ha).”
t0“carrot crops”
Claim · model-written summary
Azoxystrobin was the least effective fungicide for carrot leaf blight.
- Taxon
- carrotDaucus carotat0
- Treatment
- Azoxystrobin (0.12 kg c.p./ha)e0
- Outcome
- least effective fungicidee0
- Direction
- least effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azoxystrobin (0.12 kg c.p./ha) was the least effective fungicide.”
t0“carrot crops”
Claim · model-written summary
No tested fungicide was phytotoxic to carrot.
- Taxon
- carrotDaucus carotae0
- Treatment
- tested fungicidese0
- Outcome
- phytotoxice0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the tested fungicides were phytotoxic to the carrot crop.”
The same questions in other papers
fungicide · Alternaria dauci · Daucus carota (carrot)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
1 paper more in this group
See all 5 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.