Investigating the role of soybean planting date, especially early planting dates, on weed control it is vital to further understand the proper timing of foliar and soil active herbicide for maximum control of these troublesome weeds. These investigations must be beyond immediate weed control and must also evaluate herbicide selection pressure placed on weed populations to understand potential future herbicide resistance selection events. Furthermore, understanding the influence of planting date on soybean growth and its competitive ability with weeds is essential in understanding the role of planting date on the critical weed free period of soybean. The objectives of this research will be to: -Evaluate the influence of application timing of both foliar and soil residual herbicides in ultra-early, early, and typical soybean planting timings on control of waterhemp -Evaluate soybean emergence, soybean growth stage progression, and target weed emergence as influenced by soybean planting date and herbicide application timing.

-Evaluate the influence of application timing of both foliar and soil residual herbicides in ultra-early, early, and typical soybean planting timings on control of waterhemp -Evaluate soybean emergence, soybean growth stage progression, and target weed emergence as influenced by soybean planting date and herbicide application timing.

Data from this research will be showcased at University of Kentucky weed science field days, published in research reports, presented at national and regional meetings, and published within refereed scientific journals.

The research will benefit farmers by providing research backed recommendations for controlling problematic weeds in early planted soybean acres as the trend towards early planting increases. Data from this research will be showcased at University of Kentucky weed science field days, published in research reports, presented at national and regional meetings, and published within refereed scientific journals.