Abstract
Oidium mangiferae Berthet was found to be associated With the powdery mildew disease of mango. The air- borne conidia are released from the old tissue harboring the dormant fungal hyphae under favorable weather conditions, which produce the disease. Proper forecasting of release of airborne innoculum significantly reduced the required number of sprays needed for chemical control. Spore traps were used to monitor the concentration of airborne conidia during the months of February, March and April 1996 and l997. Daily temperature and relative humidity were noted and the spore counts from the spore traps were correlated to the meteorological data. There was a positive trend between rising temperature, lowering relative humidity and number of spores in the air alter a low temperature, high humidity and cloudy spell of weather. The maximum spore occurrences were noted around 25°C and relative humidity of 40-60%. It took 5-8 days for the emergence of disease symptoms after the first detection of airborne conidia. Ten fungicides were tested on three mango varieties (Langra, Dashehari, and Anwar Retol). The preventive sprays at the stage of first detection of air born conidia were effective in controlling the disease. Optimal timing of two sprays of fungicide were sufficient to provide preventive control (>90%). The susceptibility of inflorescence varied with its developmental stage. Proper forecasting reduced the number of sprays from 7 to 2 or 3. There was no varietal difference in incidence of the disease or response to fungicide applications. During the course of this study, we identified seedling plants which consistently showed resistance to powdery mildew.
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Claims 11
Claim · model-written summary
Oidium mangiferae is associated with powdery mildew disease of mango.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicat0 - Interactor
- Oidium mangiferae Berthet
Oidium mangiferaee1pathogen - Outcome
- powdery mildew diseasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e1“Oidium mangiferae Berthet was found to be associated With the powdery mildew disease of mango”
t0“Disease of Mango”
Claim · model-written summary
Proper forecasting of airborne inoculum release significantly reduced the number of fungicide sprays needed for chemical control.
- Taxon
- mangoMangifera indicat0
- Treatment
- Proper forecasting of release of airborne innoculume2
- Outcome
- required number of sprays needed for chemical controle2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Proper forecasting of release of airborne innoculum significantly reduced the required number of sprays needed for chemical control”
t0“Disease of Mango”
Claim · model-written summary
Airborne spore number was positively associated with rising temperature and lowering relative humidity.
- Taxon
- mangoMangifera indicat0
- Treatment
- rising temperature, lowering relative humiditye3
- Outcome
- number of spores in the aire3
- Direction
- positive trende3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“There was a positive trend between rising temperature, lowering relative humidity and number of spores in the air”
t0“Disease of Mango”
Claim · model-written summary
Maximum spore occurrence was at about 25°C and 40–60% relative humidity.
- Taxon
- mangoMangifera indicat0
- Outcome
- maximum spore occurrencese4
- Value
- 25°Ce4
- Qualifier
- relative humidity of 40-60%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The maximum spore occurrences were noted around 25°C and relative humidity of 40-60%”
t0“Disease of Mango”
Claim · model-written summary
Disease symptoms emerged 5-8 days after first detection of airborne conidia.
- Taxon
- mangoMangifera indicat0
- Outcome
- emergence of disease symptomse5
- Value
- 5-8 dayse5
- Qualifier
- after the first detection of airborne conidiae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“It took 5-8 days for the emergence of disease symptoms after the first detection of airborne conidia”
t0“Disease of Mango”
Claim · model-written summary
Preventive sprays at first detection of airborne conidia were effective in controlling the disease.
- Taxon
- mangoMangifera indicat0
- Treatment
- preventive sprayse6
- Outcome
- controlling the diseasee6
- Direction
- effectivee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The preventive sprays at the stage of first detection of air born conidia were effective in controlling the disease”
t0“Disease of Mango”
Claim · model-written summary
Two optimally timed fungicide sprays were sufficient for preventive control above 90%.
- Taxon
- mangoMangifera indicat0
- Treatment
- two sprays of fungicidee7
- Outcome
- preventive controle7
- Direction
- sufficiente7
- Value
- >90%e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Optimal timing of two sprays of fungicide were sufficient to provide preventive control (>90%)”
t0“Disease of Mango”
Claim · model-written summary
Susceptibility of inflorescence varied with its developmental stage.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- inflorescencee0
- Outcome
- susceptibility of inflorescencee0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The susceptibility of inflorescence varied with its developmental stage”
t0“Disease of Mango”
Claim · model-written summary
Proper forecasting reduced the number of sprays from 7 to 2 or 3.
- Taxon
- mangoMangifera indicat0
- Treatment
- Proper forecastinge0
- Outcome
- number of sprayse0
- Direction
- reducede0
- Value
- 7 to 2 or 3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proper forecasting reduced the number of sprays from 7 to 2 or 3”
t0“Disease of Mango”
Claim · model-written summary
No varietal difference was found in incidence of the disease or response to fungicide applications.
- Taxon
- mangoMangifera indicat0
- Material
- Langra, Dashehari, and Anwar Retole1
- Outcome
- incidence of the diseasee0
- Qualifier
- no varietal differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no varietal difference in incidence of the disease or response to fungicide applications”
e1“Ten fungicides were tested on three mango varieties (Langra, Dashehari, and Anwar Retol)”
t0“Disease of Mango”
Claim · model-written summary
Seedling plants consistently showed resistance to powdery mildew.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- seedling plantse0
- Outcome
- resistance to powdery mildewe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we identified seedling plants which consistently showed resistance to powdery mildew”
t0“Disease of Mango”
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See all 8 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.