Other issues include animals ingesting plants that are "borderline" in toxicity causing abortion, reduced milk flow, lower weight gains, vitamin A deficiency.
| Field Crops | Vegetables | Weeds |
alfalfa millet soy bean barley oats soy bean corn rape sudan fescue rye wheat | beets lettuce spinach celery mangles squash cucumbers parsnips swiss chard kale radishes turnips | bindweed elderberry Russian thistle blue-green algae fiddleneck smartweed bull thistle goldenrod stinging nettle burdock lambsquarter sunflower Canadian thistle nightshades velvetweed carelessweed ragweed whitecockle |
Oat hay moistened with water can convert nitrates to nitrites in a short time.