Claim · model-written summary
July SPI was the most significant factor related to historic relative yield change in 11 of 35 districts.
- Taxon
- corn
Zea mays subsp. mayst0 - Outcome
- changes in historic RYse0
- Value
- 11 of the 35 CRDse0
- Setting
- central U.S. Corn Belte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SPI during July is the most significant factor related to changes in historic RYs, impacting yields in 11 of the 35 CRDs in the central U.S. Corn Belt”
t0“corn”
Title
Spatial and temporal corn yield variability in the US Corn Belt during the hybrid era
D Martinez; L Nowatzke; O G Kirchner; et al. Environmental Research Communications 2026. doi:10.1088/2515-7620/ae66cc
Other claims from this paper (6)
- Association Corn yield rose across periods and districts by an average 113 kg per hectare per year.
- Observation Some Nebraska districts exceeded 150 kg per hectare per year in 1960–1980.
- Method / resource NCCPI became less robust for predicting corn yield since 1960.
- Observation Corn yield stability improved in recent years.
- Association Relative yields had their strongest precipitation-index relationship in central Illinois and northwestern Indiana.
- Association Several Nebraska districts had weaker precipitation-index relationships.