Performance of each hybrid was related to all other hybrids across a wide range of growing conditions. He pulled the number of cases produced per acre – a yield metric important to processors that he calls ”case production” – from each trial, and then incorporated environmental data to calculate yield stability for 12 of the most commonly planted hybrids grown for processing.
Williams obtained data from an anonymous vegetable processing company, representing more than a decade of sweet corn hybrid assessment trials across the upper Midwest and the Pacific Northwest. Although the focus is on sweet corn, the study is the first to link a cultivar’s yield stability with adoption in any crop. Our work is about how yield stability of individual hybrids actually relates to hybrid adoption in sweet corn,” he says. No one appears to have quantified if such recommendations are followed. However, previous studies always stopped with recommendations. “Stability analysis is valuable, particularly given the increased weather variability we’re facing. The work has resulted in several recommendations about where to grow specific cultivars for the best results. Williams says a number of crops have been studied for yield stability, a cultivar’s ability to produce consistent yields across inconsistent environments. “Experts say the ideal cultivar would have exceptional yield regardless of the weather, and across a large area, but it’s unknown if such cultivars are commercially available,” says Marty Williams, an ecologist with the Department of Crop Sciences at U of I and USDA-ARS.
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