Abstract
Plant Population and Fungicide Treatment Reduce Winter Wheat Yield Gap in Kansas
Highlights
The last two winter wheat growing seasons in Kansas were characterized by above average yields, with 57 and 47 bu/a in 2015–16 and 2016–2017, respectively
Despite the large winter wheat yield gap in Kansas, limited research is available on integrated agronomic practices to increase grain yield
An incomplete factorial treatment structure established in a randomized complete block design was conducted in three locations in Kansas during 2016–2017 to evaluate the impacts of 14 treatments on yield and grain protein concentration of the modern wheat variety ‘Everest.’ We individually added six treatments to a low-input standard control or removed from a high-input intensive control, which received all treatments
Summary
The last two winter wheat growing seasons in Kansas were characterized by above average yields, with 57 and 47 bu/a in 2015–16 and 2016–2017, respectively. These yields are below the long-term yield potential of 75 bu/a. Further research is needed to determine which management strategies will help narrow this yield gap. Our hypothesis is that improved management can largely contribute to closing wheat yield gaps in Kansas. Our objectives were to quantify the partial contribution of different management strategies, including fertilization, plant population density, fungicide, and growth regulator applications, all individually or in combination to close the wheat yield gap in central Kansas
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