Abstract
Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC). Control was most effective when spraying commenced as disease severity levels reached 2 to 3% of the leaf area blighted and when lesions were restricted to the basal five leaves of the maize plant. Highest grain yields were achieved with treatments providing disease control until the crop was physiologically mature. To provide this length of control, the frequency and number of fungicide applications varied with the stage of host development when disease was first apparent; with early infections, more fungicide treatments were necessary to provide protection until physiological maturity. Yield responses to fungicides appeared to be a function of the growth stage of the host when sprays were initiated, the amount of disease at spray date, the length of fungicide control, and effective control through to physiological maturity.
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Claims 5
Claim · model-written summary
Gray leaf spot control in maize was most effective when spraying began as disease severity reached 2 to 3% of the leaf area blighted and lesions were restricted to the basal five leaves.
- Treatment
- spraying commenced as disease severity levels reached 2 to 3% of the leaf area blightede1
- Interactor
- Cercospora zeae-maydis
Cercospora zeae-maydise0pathogen - Outcome
- Controle1
- Direction
- most effectivee1
- Value
- 2 to 3%e1
- Qualifier
- when lesions were restricted to the basal five leaves of the maize plante1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC)”
e1“Control was most effective when spraying commenced as disease severity levels reached 2 to 3% of the leaf area blighted and when lesions were restricted to the basal five leaves of the maize plant”
Claim · model-written summary
Highest maize grain yields were achieved with fungicide treatments that controlled disease until physiological maturity.
- Treatment
- treatments providing disease control until the crop was physiologically maturee2
- Outcome
- grain yieldse2
- Direction
- Higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC)”
e2“Highest grain yields were achieved with treatments providing disease control until the crop was physiologically mature”
Claim · model-written summary
With early infections, more fungicide treatments were necessary to protect maize until physiological maturity.
- Interactor
- Cercospora zeae-maydisCercospora zeae-maydise0pathogen
- Outcome
- fungicide treatmentse3
- Direction
- moree3
- Qualifier
- with early infectionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC)”
e3“with early infections, more fungicide treatments were necessary to provide protection until physiological maturity”
Claim · model-written summary
The frequency and number of fungicide applications in maize varied with the host development stage when disease was first apparent.
- Organ / stage
- stage of host development when disease was first apparente5
- Outcome
- frequency and number of fungicide applicationse5
- Direction
- variede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC)”
e5“the frequency and number of fungicide applications varied with the stage of host development when disease was first apparent”
Claim · model-written summary
Yield responses to fungicides appeared to depend on host growth stage at spray start, disease amount at spray date, length of control, and control through maturity.
- Treatment
- fungicidese4
- Outcome
- Yield responses to fungicidese4
- Qualifier
- the growth stage of the host when sprays were initiatede4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing and frequency of fungicide treatments for management and control of gray leaf spot of maize, caused by Cercospora zeae-maydis, were quantified with the logistic model and area under disease progress curve (AUDPC)”
e4“Yield responses to fungicides appeared to be a function of the growth stage of the host when sprays were initiated, the amount of disease at spray date, the length of fungicide control, and effective control through to physiological maturity”
The same questions in other papers
application · Cercospora zeae-maydis · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- 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.