Johnson Grass contains cyanide??
Last week I was looking up info about black cherry trees
being poisonous to cattle. I found what I was looking for.
But I also found this. According to the page below,
Johnson Grass is poisonous to cattle until it is well cured.
I asked my friend/neighbor that raises cows about this
and he told me cows love Johnson Grass and it was wrong.
Can someone explain the descreptancy between
what I read and what I was told?
Leaves and stems possess cyanide. The young shoots are the most toxic, and when wilted or frost-damaged, cyanide becomes readily available in the leaves. Nitrates can also accumulate in johnsongrass. Well-cured hay is relatively safe for animal consumption as mature plants have much lower toxicity.
And what about the Polk Salad it mentions.
Fence rows here are overgrown with the stuff.
Common pokeweed (Phytolacca americana)
All parts, especially roots and seeds.
Irritant effects due to phytolaccigenin are salivation, abdominal pain and diarrhea. In rare cases where large doses are consumed, animals may show anemia and alterations in heart rate and respiration.