Kansas has just completed the twentieth year of its organized program for the control of noxious weeds. The Kansas Noxious Weed Law was passed in 1937 by the State legislature. At that time, field bindweed, Vonvolvulus arvensis, was recognized as a menace to agriculture and the law was passed to provide for an organized fight against this weed. The law at that time contained provisions only for control and eradication measures of that one weed. In 1945, it was foreseen that a program which did not include “preventive” measures was inadequate. Provisions were then added to the law which made it unlawful to sell or offer for sale, unless processed to destroy the viability of the noxious weed seeds, grain and hay (livestock feed material), screenings, nursery stock, soil and sod containing seeds of noxious weeds.