It is hereby declared to be in the interest of the public welfare that producers of wheat, corn, grain sorghum, and oats shall be authorized and encouraged to act jointly and in cooperation with handlers, dealers, and purchasers of wheat, corn, grain sorghum, and oats and with the Commissioner of Agriculture and Industries and with the State Board of Agriculture and Industries in promoting and stimulating by research, education, advertising and other methods, the increased and efficient production, distribution, use and sale of wheat, corn, grain sorghum, and oats and wheat, corn, grain sorghum, and oats products; and it is the intent and purpose of this article to authorize and provide a method and procedure for a promotional program for the wheat, corn, grain sorghum, and oats industry and the financing thereof pursuant to powers of the Legislature as authorized by the amendment to the state Constitution which expressly authorizes such activity.