Scientific national weather forecasts are available from accessible sources of electronic quote and news services, as well as through direct subscription. Included in their web site is a section devoted to various weather services and reports. Many members and customers use this function as a means of knowing ahead of time the anticipated weather patterns for specific regions. To be an effective manager of commodity price risk a reliable source of ag-weather forecasts is needed. One should avoid forecasters who tend to sensationalize, and keep in mind that weather is not the only factor driving grain markets.
Some fields have soybeans ranging from three trifoliates to still emerging.
When to spray a postemergence herbicide is not an easy decision. Start with the size of the weeds and determine your herbicide choices. Herbicide injury can often be minimized but not eliminated. The environment at time of application is a factor. Hot, humid weather is an environment more prone to herbicide injury.