Table 2. Summary of statistically significant (P < 0.1) observed maize yield trends due to the realized monthly precipitation and maximum temperature anomalies.
| Region-Location | Maximum Temperature | Precipitation | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March | April | May | June | July | August | September | March | April | May | June | July | August | September | |
| kg ha−1 year−1 | ||||||||||||||
| North-Belle Mina | — | 36 | — | −88.8 | — | — | −59.3 | — | — | — | — | — | — | — |
| North-Blairsville | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Central-Prattville | — | — | — | −34.2 | — | — | 11.2 | — | — | −11.9 | −12.1 | −8.6 | — | — |
| Southcentral-Tifton | 3.2 | — | — | — | 10.3 | — | — | −10 | — | −13.2 | 22.9 | −14.7 | — | — |
| South- Fairhope | −35 | — | — | — | — | — | — | — | 2.0 | — | — | — | −2.1 | — |
| Southeastern U.S. average | — | — | — | −18.6 | 0.2 | — | — | — | 4.1 | — | −2.8 | — | — | — |
The estimates were calculated by multiplying the observed monthly precipitation and maximum temperature trends (mediated by climate change) that are documented in Table S2 and the estimated potential impacts on yield that are documented in Table 2 for each of the 5 locations over the past 33 years (1981–2013). The location-specific data were aggregated to generate a southeastern-US average for each of the 7 months. Dashes denote statistically non-significant observed maize yield trends (P > 0.1).