An Integrated Approach to Control Sclerotinia Stem Rot (White Mold) in Soybean

While brown stem rot, Phytophthora root rot, sudden death syndrome and the soybean cyst nematode generally are regarded as the most significant diseases of soybean in the North Central States, Sclerotinia stem rot, also called white mold, has been a problem in Minnesota, Wisconsin and Michigan for many years. Beginning in 1992, and again in 1994, Sclerotinia stem rot developed throughout the northern range of the North Central Region. Nationally, the disease is considered to be minor because it has not involved a high percentage of the national soybean acreage. Possibly this situation has changed and Sclerotinia stem rot will be an annual threat to soybean production in more of the Region. Chamberlain (1951) was the first to make a detailed report on Sclerotinia stem rot in the mid-west after he observed localized, but severe outbreaks of the disease in lllinois in 1946. Chamberlain (1951) summarized his findings by the following quote; \u27There appears to be no ready explanation as to why Sclerotinia stem rot, certainly one of the least prevalent of soybean diseases, can cause such severe but localized damage . After almost 50 years, more is known about factors that impact on the incidence and severity of this disease, but an element of mystery still remains as to why sudden outbreaks occur

Weed Management and Soybean Yields as Influenced by Row Width and Post-Emergent Herbicide Application Timing

Irrigated soybeans were grown in 2018 and 2019 at the Kansas River Valley Experi­ment Field near Rossville, KS. Soybeans were planted in 30-inch or 15-inch rows and a standard pre-emergent herbicide was applied. Planting dates were May 11 and June 4 in 2018 and 2019, respectively. The post-emergent herbicide was applied at approxi­mately 21 or 35 days following soybean planting (DAP). Weed control and crop injury were visually evaluated approximately every seven days following herbicide application. Yields, moisture, and test weights were calculated from the center two rows in 30-inch plots and four rows in 15-inch plots after combine harvest. Predominant weeds present were Palmer amaranth, giant foxtail, ivyleaf morningglory, and honeyvine milkweed. Soybean yields from plots without post-emergent herbicide applied were reduced 6–17% vs. those that were treated. In the 27-day longer growing season of 2018, yield of soybeans planted in 15-inch rows trended slightly, though not significantly, higher than those planted in 30-inch rows

The United States COVID-19 Forecast Hub dataset

Academic researchers, government agencies, industry groups, and individuals have produced forecasts at an unprecedented scale during the COVID-19 pandemic. To leverage these forecasts, the United States Centers for Disease Control and Prevention (CDC) partnered with an academic research lab at the University of Massachusetts Amherst to create the US COVID-19 Forecast Hub. Launched in April 2020, the Forecast Hub is a dataset with point and probabilistic forecasts of incident cases, incident hospitalizations, incident deaths, and cumulative deaths due to COVID-19 at county, state, and national, levels in the United States. Included forecasts represent a variety of modeling approaches, data sources, and assumptions regarding the spread of COVID-19. The goal of this dataset is to establish a standardized and comparable set of short-term forecasts from modeling teams. These data can be used to develop ensemble models, communicate forecasts to the public, create visualizations, compare models, and inform policies regarding COVID-19 mitigation. These open-source data are available via download from GitHub, through an online API, and through R packages

Weed Management and Soybean Yields as Influenced by Row Width and Post-Emergent Herbicide Application Timing

Irrigated soybeans were grown in 2018 and 2019 at the Kansas River Valley Experi­ment Field near Rossville, KS. Soybeans were planted in 30-inch or 15-inch rows and a standard pre-emergent herbicide was applied. Planting dates were May 11 and June 4 in 2018 and 2019, respectively. The post-emergent herbicide was applied at approxi­mately 21 or 35 days following soybean planting (DAP). Weed control and crop injury were visually evaluated approximately every seven days following herbicide application. Yields, moisture, and test weights were calculated from the center two rows in 30-inch plots and four rows in 15-inch plots after combine harvest. Predominant weeds present were Palmer amaranth, giant foxtail, ivyleaf morningglory, and honeyvine milkweed. Soybean yields from plots without post-emergent herbicide applied were reduced 6–17% vs. those that were treated. In the 27-day longer growing season of 2018, yield of soybeans planted in 15-inch rows trended slightly, though not significantly, higher than those planted in 30-inch rows