Abstract
The yield of common bean ( Phaseolus vulgaris L.) is affected by several factors, including diseases such as angular leaf spot ( Phaeoisariopsis griseola ) and N deficiency caused by lack of nodulation. In Minas Gerais State, Brazil, farmers have been using both fungicide and molybdenum (Mo) applications to improve crop yield. The objective of this research was to investigate the effect of Mo application in conjunction with variably applied fungicide on common bean in the management of angular leaf spot (ALS). Field experiments were conducted in two seasons, wet and dry, with eight fungicide treatment schedules, with and without Mo. Angular leaf spot severity, plant growth, photosynthesis, and yield were measured. A single application of Mo 25 d after sowing (DAS) decreased the area under the disease progress curve by 38% and increased the area under the leaf area progress curve by 20%, leaf photosynthesis by 26%, and yield by 51%. When combined with the Mo applications, fungicide spray applied once (at an early growth stage) or twice in the bean flowering period (25–45 DAS) should provide substantial control of ALS.
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Claims 6
Claim · model-written summary
Molybdenum application 25 days after sowing decreased angular leaf spot disease progress area by 38%.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- A single application of Mo 25 d after sowing (DAS)e0
- Interactor
- Phaeoisariopsis griseola
_Figure_19.jpg?width=60)
Pseudocercospora griseolae1pathogen - Outcome
- area under the disease progress curvee0
- Direction
- decreasede0
- Value
- 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_19.jpg?width=500)
Verbatim
e0“A single application of Mo 25 d after sowing (DAS) decreased the area under the disease progress curve by 38%”
t0“Common Bean (Phaseolus vulgaris L.)”
e1“Phaeoisariopsis griseola”
Claim · model-written summary
Molybdenum application 25 days after sowing increased leaf area progress area by 20%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- A single application of Mo 25 d after sowing (DAS)e0
- Outcome
- area under the leaf area progress curvee0
- Direction
- increasede0
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A single application of Mo 25 d after sowing (DAS) decreased the area under the disease progress curve by 38% and increased the area under the leaf area progress curve by 20%”
t0“Common Bean (Phaseolus vulgaris L.)”
Claim · model-written summary
Molybdenum application 25 days after sowing increased leaf photosynthesis by 26%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- A single application of Mo 25 d after sowing (DAS)e1
- Outcome
- leaf photosynthesise0
- Direction
- increasede1
- Value
- 26%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf photosynthesis by 26%”
e1“A single application of Mo 25 d after sowing (DAS) decreased the area under the disease progress curve by 38% and increased the area under the leaf area progress curve by 20%, leaf photosynthesis by 26%”
t0“Common Bean (Phaseolus vulgaris L.)”
Claim · model-written summary
Molybdenum application 25 days after sowing increased yield by 51%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- A single application of Mo 25 d after sowing (DAS)e1
- Outcome
- yielde0
- Direction
- increasede1
- Value
- 51%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield by 51%”
e1“A single application of Mo 25 d after sowing (DAS) decreased the area under the disease progress curve by 38% and increased the area under the leaf area progress curve by 20%, leaf photosynthesis by 26%, and yield by 51%”
t0“Common Bean (Phaseolus vulgaris L.)”
Claim · model-written summary
The authors recommend one early fungicide spray with molybdenum to control angular leaf spot.
- Taxon
- beane0
- Treatment
- fungicide spray applied once (at an early growth stage)e0
- Interactor
- Phaeoisariopsis griseolaPseudocercospora griseolae1pathogen
- Outcome
- substantial control of ALSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicide spray applied once (at an early growth stage) or twice in the bean flowering period (25–45 DAS) should provide substantial control of ALS”
e1“Phaeoisariopsis griseola”
Claim · model-written summary
The authors recommend two fungicide sprays during bean flowering with molybdenum to control angular leaf spot.
- Taxon
- beane0
- Treatment
- twice in the bean flowering period (25–45 DAS)e0
- Interactor
- Phaeoisariopsis griseolaPseudocercospora griseolae1pathogen
- Outcome
- substantial control of ALSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicide spray applied once (at an early growth stage) or twice in the bean flowering period (25–45 DAS) should provide substantial control of ALS”
e1“Phaeoisariopsis griseola”
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1 paper in the same direction as this paper
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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.