Abstract
Early blight, caused by Alternaria solani , is a ubiquitous disease that can reduce potato yield. Adequate crop fertility and appropriate fungicide applications usually suppress the development of this disease. Field trials were established in Prince Edward Island to determine whether strobilurin analogs, namely azoxystrobin and pyraclostrobin, could suppress early blight of potatoes (cvs. Shepody and Russet Burbank) grown under two nitrogen (N) fertility regimes (high or low N). Azoxystrobin and pyraclostrobin were linked to significantly higher total tuber yield for Russet Burbank in 2003 and Shepody in 2004 when compared to plots receiving no strobilurin fungicides. No significant differences in total tuber yield based on N fertility were observed, although the high N rate decreased disease in Russet Burbank control plots in 2004. Due to an absence of early blight in 2003, the increase in Russet Burbank yield may be attributed to the physiological and developmental alterations brought about by strobilurin products in treated plants. In 2004, early blight was severe in inoculated control plots, but it was significantly suppressed in plots having received azoxystrobin or pyraclostrobin, regardless of the cultivar type or fertility regime. Therefore, to prevent unnecessary N inputs, growers need to supply only the necessary N amount to optimize tuber yields and manage early blight with fungicides.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Strobilurin fungicides significantly increased total tuber yield for Russet Burbank in 2003.
- Taxon
- potatoes
Solanum tuberosumt0 - Material
- Russet Burbanke0
- Treatment
- Azoxystrobin and pyraclostrobine0
- Outcome
- total tuber yielde0
- Direction
- highere0
- Qualifier
- 2003e0
- Comparator
- plots receiving no strobilurin fungicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azoxystrobin and pyraclostrobin were linked to significantly higher total tuber yield for Russet Burbank in 2003 and Shepody in 2004 when compared to plots receiving no strobilurin fungicides”
t0“potatoes”
Claim · model-written summary
Strobilurin fungicides significantly increased total tuber yield for Shepody in 2004.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Shepodye0
- Treatment
- Azoxystrobin and pyraclostrobine0
- Outcome
- total tuber yielde0
- Direction
- highere0
- Qualifier
- 2004e0
- Comparator
- plots receiving no strobilurin fungicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azoxystrobin and pyraclostrobin were linked to significantly higher total tuber yield for Russet Burbank in 2003 and Shepody in 2004 when compared to plots receiving no strobilurin fungicides”
t0“potatoes”
Claim · model-written summary
Nitrogen fertility did not significantly differentiate total tuber yield.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- N fertilitye0
- Outcome
- total tuber yielde0
- Direction
- No significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences in total tuber yield based on N fertility were observed”
t0“potatoes”
Claim · model-written summary
High nitrogen decreased early blight disease in Russet Burbank control plots in 2004.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Russet Burbanke0
- Treatment
- high N ratee0
- Interactor
- Alternaria solani
Alternaria solanie1pathogen - Outcome
- diseasee0
- Direction
- decreasede0
- Qualifier
- control plots in 2004e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high N rate decreased disease in Russet Burbank control plots in 2004”
t0“potatoes”
e1“Early blight, caused by Alternaria solani”
Claim · model-written summary
Early blight was severe in inoculated control plots in 2004.
- Taxon
- potatoesSolanum tuberosumt0
- Interactor
- Alternaria solaniAlternaria solanie1pathogen
- Outcome
- early blight was severee0
- Qualifier
- inoculated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2004, early blight was severe in inoculated control plots”
t0“potatoes”
e1“Early blight, caused by Alternaria solani”
Claim · model-written summary
Azoxystrobin significantly suppressed early blight in 2004.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- azoxystrobine0
- Interactor
- Alternaria solaniAlternaria solanie1pathogen
- Outcome
- early blighte0
- Direction
- suppressede0
- Comparator
- inoculated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“early blight was severe in inoculated control plots, but it was significantly suppressed in plots having received azoxystrobin or pyraclostrobin”
t0“potatoes”
e1“Early blight, caused by Alternaria solani”
Claim · model-written summary
Pyraclostrobin significantly suppressed early blight in 2004.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- pyraclostrobine0
- Interactor
- Alternaria solaniAlternaria solanie1pathogen
- Outcome
- early blighte0
- Direction
- suppressede0
- Comparator
- inoculated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“early blight was severe in inoculated control plots, but it was significantly suppressed in plots having received azoxystrobin or pyraclostrobin”
t0“potatoes”
e1“Early blight, caused by Alternaria solani”
Claim · model-written summary
Growers should provide only necessary nitrogen and manage early blight with fungicides.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- supply only the necessary N amount to optimize tuber yields and manage early blight with fungicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growers need to supply only the necessary N amount to optimize tuber yields and manage early blight with fungicides”
t0“potatoes”
The same questions in other papers
azoxystrobin · Alternaria solani · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
pyraclostrobin · Alternaria solani · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
- positive
pyraclostrobin · yield · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
azoxystrobin · yield · Solanum tuberosum (potato)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →nitrogen · Alternaria solani · Solanum tuberosum (potato)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- 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.