Wheat is not usually regarded as a substitute for corn as a feed for livestock, but a small carry-over of old corn and a new crop greatly reduced by drought leaves many farmers short of corn for feed. With the other feed grain supplies only about equal to the amounts normally fed, the main source of making up the shortage of corn is wheat.

Knowledge of plant toxicity has always been important, but the information has not always been reliable. Now, increasing international trade is drawing attention to the inadequacy of regional information and highlighting the geographical fragmentation and notorious discrepancies of thinly documented information. The international community of safet