One of the most feared weeds in corn fields is giant foxtail. Postemergence herbicides also are of much value in controlling weeds and increasing corn yields. Wild oat and mustard were much more serious competitors than yellow foxtail and wild buckwheat. Sixteen years of weed research since the information recorded in the agronomy monograph has revealed new chemical compounds and variations on spraying techniques. However, many of the problems prevalent then are still present.
Weeds are indeed survivalists.