When you test your hay or corn stalks or cover crop for nitrates, look closely at the report to see what method your lab used to report your nitrate results.
Poisonous plants are responsible for considerable losses in livestock although many cases go unrecognized and undiagnosed due to a lack of knowledge of which plants could be responsible.
Be cautious when turning livestock into pastures with certain warm season grasses as toxic nitrate and prussic acid can accumulate in drought situations.
In some cases, plants can become more toxic during drought and heat stress. In addition, there is the increased potential for cattle to ingest toxic plants due to lack of other feedstuffs.