High level of nitrates have been detected in forages this year in South Dakota and other states. Depending on where you live, it could be due to weather conditions, fertilizer, previous crop, or a combination.
It is important to remember that each herbicide varies in terms of target weed response. In other words, herbicides vary in ability to kill specific weeds and always refer to product labels prior to use.
Hot and dry cornfield conditions are breeding grounds for dangerous aspergillus ear and kernel mold that produces aflatoxins. This toxin is a carcinogen, can harm livestock and can lead to rejection at the elevator.