Abstract
Abstract In addition to cultural practices, the application of the fungicide mefenoxam is an important disease management tactic used to control both pink rot and leak on potato tubers grown in the USA. Mefenoxam resistance has been identified in many of the potato growing regions, and therefore resistance management strategies are very important for retaining this fungicide as a tool to manage these storage rot diseases. The relationship between mefenoxam efficacy and cultivar susceptibility to pink rot and leak was assessed in post‐harvest inoculation studies. Mefenoxam was applied to potato ( Solanum tuberosum ) cultivars known to express varying levels of susceptibility to pink rot and leak caused by Phytophthora erythroseptica and Pythium ultimum , respectfully. Tubers harvested from plants treated with in‐furrow and foliar applications of mefenoxam were inoculated with isolates sensitive to the fungicide. Incidence and severity of both diseases ranged widely among cultivars. Russet Norkotah was the most susceptible to infection by P. erythroseptica , while cvs Pike and Atlantic were the most resistant. Cultivars Dark Red Norland, Russet Norkotah, Goldrush and Russet Burbank were most susceptible to infection by P. ultimum whereas Snowden was most resistant. Control of pink rot differed significantly among cultivars following mefenoxam treatment, ranging from 28% (cv. Goldrush) to 67% (cv. Snowden) and generally provided the greatest level of disease control on susceptible and moderately susceptible cultivars such as Russet Norkotah and Snowden, respectively. In contrast, the impact of mefenoxam on leak development was minimal and disease control did not differ significantly among the cultivars. The fungicide failed to control leak in the susceptible cvs Atlantic and Pike and control ranged from 1.7% to 5.2% in cvs Goldrush, Russet Norkotah, Dark Red Norland, Russet Burbank and Kennebec. The greatest level of leak control was achieved with the moderately resistant cv., Snowden, at 12.7%. Cultivars most likely to benefit from mefenoxam treatments should be targeted as part of a pink rot management programme. Judicious use of the fungicide, when matched with the level of cultivar susceptibility, may prove to be an efficient and effective approach to reduce infection rates and possibly manage mefenoxam resistance thereby maintaining longevity of the compound.
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Claims 13
Claim · model-written summary
Pink rot incidence and severity varied among cultivars.
- Taxon
- potato
Solanum tuberosumt0 - Material
- cultivarse0
- Interactor
- Phytophthora erythroseptica
_with_Phytophthora_erythroseptica_zoospores_fmicb-10-00131-g003.jpg?width=60)
Phytophthora erythrosepticae1pathogen - Outcome
- Incidence and severitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_with_Phytophthora_erythroseptica_zoospores_fmicb-10-00131-g003.jpg?width=500)
Verbatim
e0“Incidence and severity of both diseases ranged widely among cultivars”
e1“pink rot and leak caused by Phytophthora erythroseptica and Pythium ultimum”
t0“potato”
Claim · model-written summary
Leak incidence and severity varied among cultivars.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cultivarse0
- Interactor
- Pythium ultimumGlobisporangium ultimume1pathogen
- Outcome
- Incidence and severitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incidence and severity of both diseases ranged widely among cultivars”
e1“pink rot and leak caused by Phytophthora erythroseptica and Pythium ultimum”
t0“potato”
Claim · model-written summary
Russet Norkotah was most susceptible to P. erythroseptica infection.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Russet Norkotahe0
- Interactor
- P. erythrosepticaPhytophthora erythrosepticae0pathogen
- Outcome
- infection by P. erythrosepticae0
- Direction
- most susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Russet Norkotah was the most susceptible to infection by P. erythroseptica”
t0“potato”
Claim · model-written summary
Pike and Atlantic were most resistant to P. erythroseptica.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Pike and Atlantice0
- Interactor
- P. erythrosepticaPhytophthora erythrosepticae1pathogen
- Outcome
- infection by P. erythrosepticae1
- Direction
- most resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cvs Pike and Atlantic were the most resistant”
e1“infection by P. erythroseptica”
t0“potato”
Claim · model-written summary
Four cultivars were most susceptible to P. ultimum infection.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Dark Red Norland, Russet Norkotah, Goldrush and Russet Burbanke0
- Interactor
- P. ultimumGlobisporangium ultimume0pathogen
- Outcome
- infection by P. ultimume0
- Direction
- most susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars Dark Red Norland, Russet Norkotah, Goldrush and Russet Burbank were most susceptible to infection by P. ultimum”
t0“potato”
Claim · model-written summary
Snowden was most resistant to P. ultimum infection.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Snowdene0
- Interactor
- P. ultimumGlobisporangium ultimume1pathogen
- Outcome
- infection by P. ultimume1
- Direction
- most resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Snowden was most resistant”
e1“infection by P. ultimum”
t0“potato”
Claim · model-written summary
Mefenoxam controlled pink rot by 28% in Goldrush.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Goldrushe0
- Treatment
- mefenoxam treatmente0
- Outcome
- Control of pink rote0
- Direction
- Controle0
- Value
- 28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control of pink rot differed significantly among cultivars following mefenoxam treatment, ranging from 28% (cv. Goldrush) to 67% (cv. Snowden)”
t0“potato”
Claim · model-written summary
Mefenoxam controlled pink rot by 67% in Snowden.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Snowdene0
- Treatment
- mefenoxam treatmente0
- Outcome
- Control of pink rote0
- Direction
- Controle0
- Value
- 67%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control of pink rot differed significantly among cultivars following mefenoxam treatment, ranging from 28% (cv. Goldrush) to 67% (cv. Snowden)”
t0“potato”
Claim · model-written summary
Mefenoxam had minimal impact on leak development, without significant cultivar differences.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- mefenoxame0
- Outcome
- leak developmente0
- Direction
- minimale0
- Comparator
- cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the impact of mefenoxam on leak development was minimal and disease control did not differ significantly among the cultivars”
t0“potato”
Claim · model-written summary
Mefenoxam failed to control leak in Atlantic and Pike.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Atlantic and Pikee0
- Treatment
- mefenoxame1
- Outcome
- control leake0
- Direction
- failed to controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fungicide failed to control leak in the susceptible cvs Atlantic and Pike”
e1“impact of mefenoxam on leak development”
t0“potato”
Claim · model-written summary
Mefenoxam leak control ranged from 1.7% to 5.2% across five cultivars.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Goldrush, Russet Norkotah, Dark Red Norland, Russet Burbank and Kennebece0
- Treatment
- mefenoxame1
- Outcome
- controle0
- Direction
- controle0
- Value
- 1.7% to 5.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“control ranged from 1.7% to 5.2% in cvs Goldrush, Russet Norkotah, Dark Red Norland, Russet Burbank and Kennebec”
e1“impact of mefenoxam on leak development”
t0“potato”
Claim · model-written summary
Snowden had the greatest leak control, 12.7%.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Snowdene0
- Treatment
- mefenoxame1
- Outcome
- leak controle0
- Direction
- greateste0
- Value
- 12.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest level of leak control was achieved with the moderately resistant cv., Snowden, at 12.7%”
e1“impact of mefenoxam on leak development”
t0“potato”
Claim · model-written summary
The authors recommend targeting cultivars most likely to benefit from mefenoxam in pink rot management.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- Cultivars most likely to benefit from mefenoxam treatments should be targetede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars most likely to benefit from mefenoxam treatments should be targeted as part of a pink rot management programme”
t0“potato”
The same questions in other papers
metalaxyl-M · control · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
metalaxyl-M · disease · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
- 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.