The goal of this project is increase soybean yields and profitability in Kentucky. Specifically we will examine the yield of double-crop soybean following a fallow treatment and three winter annual crops: barley, canola, and wheat. Wheat is known to produce chemical compounds that negatively affect seed germination of succeeding crops. Identifying if yield reductions due to the preceding rotational crop exist and the extent of those yield reductions of double-crop soybeans will allow producers to choose more profitable cropping systems in Kentucky. It may also allow agronomists to develop management strategies to overcome or compensate for the yield reductions thus increasing overall profita...