부산대학교 도서관

Future agricultural systems will need to become more resilient as climate change impacts increase. One expected outcome of climate change is an increase in severe thunderstorms with high velocity straight line winds. In August 2020, a derecho, a cluster of thunderstorms generating high‐speed prolonged‐duration straight line winds, swept through Iowa and Illinois in the north central U.S. Corn Belt. Damage estimates from the derecho range up to US$11.2 billion, with significant impacts to crops, stored grain, and property throughout its path. Fourteen field locations of short‐statured maize research hybrids were growing within the path of the derecho, where data was collected on their lodging damage resistance compared with isogenic and near isogenic tall counterparts. For short‐stature maize, an average of 25% of plants were damaged, compared with 50% for isogenic tall hybrids (across all locations; p =.0009). This decreased lodging damage was associated with a mean estimated yield advantage of 1.57 t ha–1 for short‐stature maize across the breadth of the storm (p =.0011). Economic and environmental models indicated that planting short‐stature maize hybrid across the storm area could have prevented the loss of approximately $938 million in revenue and 1.48 million metric tons of CO2 equivalents. Core Ideas: Wind damage to crops is an underreported impact of climate change on crop resilience.The 2020 derecho damaged more than 4 million maize hectares in the midwestern United States.Short‐stature maize hybrids showed half the wind damage and 13% higher yield.This leads to more economic value for farmers and improved sustainability of the maize system. [ABSTRACT FROM AUTHOR]