Abstract
The efficacy of fungicides with different modes of action i.e. Curzate M-8 (cymoxanil 8% + mancozeb 64% 72 WP), Amistar 25% SC (azoxystrobin) and Acrobat 50% WP (dimethomorph) along with Ridomil MZ 72 WP (metalaxyl 8% + mancozeb 64%) and Indofil M-45 (mancozeb 75%) was determined against metalaxyl resistant population of Psuedoperonospora cubensis in a cucumber field in village Jand (Amritsar) during 2007–08 crop season. The cucumber fields in this village have been facing the problem of inferior efficacy of Ridomil MZ in controlling downy mildew because of development of metalaxyl resistance in P. cubensis due to repeated application of Ridomil MZ in the past several years. Cultivar Poinsette was used for conducting the experiment and standard agronomic practices were followed to raise the crop planted in December 2007–08 under low plastic tunnel. Three replications were used per treatment and each replication had a plot size of 2.0 m x 15.0 m. Fungicide applications were started with the initial appearance of downy mildew symptoms in the field towards end February followed by three more applications at 10 days interval. The data on disease severity on cucumber leaves were recorded after 10 days of the last spray following a 0–5 rating scale. Data revealed that Ridomil MZ applications badly failed to control the disease effectively and the disease scenario in the plots treated with this fungicide appeared like that in untreated plots with disease severity of 55.0%. Curzate M-8 72 WP was able to control the disease to the maximum level with an average disease severity of 2.6%. Similarly, Amistar 25% SC, a strobilurin compound and Acrobat 50% WP (dimethomorph) also appeared quite effective against resistant population of P. cubensis and showed average disease severity of 6.0 and 5.0%, respectively. The performance of Indofil M-45 also appeared satisfactory and showed disease severity of 10.5% as compared to 70.0% in untreated control. The results revealed that where metalaxyl resistance has developed in P. cubensis, fungicides like Curzate M-8, Amistar and Acrobat can be used for effective disease control.
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Claims 6
Claim · model-written summary
Ridomil MZ failed to control cucumber downy mildew effectively, with disease severity of 55.0% and plots resembling untreated plots.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- Ridomil MZ applicationse0
- Interactor
- Psuedoperonospora cubensist0pathogen
- Outcome
- disease severitye0
- Direction
- appeared likee0
- Value
- 55.0%e0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ridomil MZ applications badly failed to control the disease effectively and the disease scenario in the plots treated with this fungicide appeared like that in untreated plots with disease severity of 55.0%.”
t0“Psuedoperonospora cubensis causing downy mildew of cucumber”
Claim · model-written summary
Curzate M-8 72 WP gave maximum cucumber downy mildew control, with average severity of 2.6%.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Curzate M-8 72 WPe0
- Interactor
- Psuedoperonospora cubensist0pathogen
- Outcome
- average disease severitye0
- Direction
- lowerinferrede0
- Value
- 2.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Curzate M-8 72 WP was able to control the disease to the maximum level with an average disease severity of 2.6%.”
t0“Psuedoperonospora cubensis causing downy mildew of cucumber”
Claim · model-written summary
Amistar 25% SC was effective against resistant P. cubensis, with cucumber disease severity of 6.0%.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Amistar 25% SCe0
- Interactor
- P. cubensise0pathogen
- Outcome
- average disease severitye0
- Direction
- lowerinferrede0
- Value
- 6.0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amistar 25% SC, a strobilurin compound and Acrobat 50% WP (dimethomorph) also appeared quite effective against resistant population of P. cubensis and showed average disease severity of 6.0 and 5.0%, respectively.”
t0“cucumber”
Claim · model-written summary
Acrobat 50% WP was effective against resistant P. cubensis, with cucumber disease severity of 5.0%.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Acrobat 50% WP (dimethomorph)e0
- Interactor
- P. cubensise0pathogen
- Outcome
- average disease severitye0
- Direction
- lowerinferrede0
- Value
- 5.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amistar 25% SC, a strobilurin compound and Acrobat 50% WP (dimethomorph) also appeared quite effective against resistant population of P. cubensis and showed average disease severity of 6.0 and 5.0%, respectively.”
t0“cucumber”
Claim · model-written summary
Indofil M-45 gave satisfactory cucumber disease control, with severity 10.5% versus 70.0% in untreated control.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Indofil M-45e0
- Interactor
- Psuedoperonospora cubensist0pathogen
- Outcome
- disease severitye0
- Direction
- lowerinferrede0
- Value
- 10.5%e0
- Qualifier
- 70.0%e0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of Indofil M-45 also appeared satisfactory and showed disease severity of 10.5% as compared to 70.0% in untreated control.”
t0“Psuedoperonospora cubensis causing downy mildew of cucumber”
Claim · model-written summary
Curzate M-8, Amistar and Acrobat are recommended for effective cucumber disease control where P. cubensis has developed metalaxyl resistance.
- Taxon
- cucumberCucumis sativust0
- Interactor
- P. cubensise0pathogen
- Outcome
- Curzate M-8, Amistar and Acrobat can be used for effective disease controle0
- Qualifier
- where metalaxyl resistance has developede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results revealed that where metalaxyl resistance has developed in P. cubensis, fungicides like Curzate M-8, Amistar and Acrobat can be used for effective disease control.”
t0“cucumber”
The same questions in other papers
dimethomorph · disease · Cucumis sativus (cucumber)Results agree
4 papers in the same direction as this paper
- positive
- 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.