Claim · model-written summary
In untreated control plots, whole-plot gray leaf spot ratings ranged from 3.0 to 7.7 on a 1 to 9 scale in maize.
- Interactor
- Cercospora zeae-maydis
Cercospora zeae-maydise0pathogen - Outcome
- whole-plot ratingse1
- Value
- 3.0 to 7.7 (1 to 9 scale)e1
- Qualifier
- untreated control plotse1
Zea maysNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Probabilities for Profitable Fungicide Use Against Gray Leaf Spot in Hybrid Maize”
e0“Gray leaf spot, caused by the fungus Cercospora zeae-maydis, causes considerable yield losses in hybrid maize”
e1“Gray leaf spot severity in untreated control plots ranged from 2.6 to 72.8% for the ear leaf and from 3.0 to 7.7 (1 to 9 scale) for whole-plot ratings”
Title
Probabilities for Profitable Fungicide Use Against Gray Leaf Spot in Hybrid Maize
G. P. Munkvold; C. A. Martinson; J. M. Shriver; et al. Phytopathology 2001. doi:10.1094/phyto.2001.91.5.477
Other claims from this paper (11)
- Observation In untreated control plots, gray leaf spot severity on the ear leaf ranged from 2.6 to 72.8% in maize.
- Intervention effect Fungicide applications with propiconazole or mancozeb significantly reduced gray leaf spot severity in maize in Iowa field experiments.
- Intervention effect A single propiconazole application increased maize yield by as much as 1.65 t/ha, significantly.
- Association Gray leaf spot severity was significantly correlated with maize yield; the direction of the correlation is not stated.
- Observation For one propiconazole application, the probability of a positive net return ranged from about 0.06 to more than 0.99 in maize.
- Observation The probability of a positive net return exceeded 0.50 in six of nine maize fungicide scenarios.
- Observation The highest probabilities of profitable fungicide use occurred in the 1995 experiments with the most susceptible maize hybrid.
- Intervention effect A single propiconazole application gave higher probabilities of profitable net return than two applications in maize, almost always.
- Recommendation A single propiconazole application frequently can be profitable for gray leaf spot management in maize in Iowa.
- Association The probability of a profitable fungicide application is strongly influenced by hybrid susceptibility; the direction is not stated.
- Method / resource Calculating probabilities of positive net return was more informative than mean separation for assessing the economic success of fungicide applications in maize.