It is here recognized that agriculture is characterized by individual production in contrast to the group or factory system that characterizes other forms of industrial production; and that the ordinary form of corporate organization permits industrial groups to combine for the purpose of group production and the ensuing group marketing; and that the public has an interest in permitting farmers to bring their industry to the high degree of efficiency and merchandising skill evidenced in the manufacturing industries; and that the public interest urgently needs to prevent the migration from the farm to the city in order to keep up farm production and to preserve the agricultural supply of the nation; and that the public interest demands that the farmer be encouraged to attain a superior and more direct system of marketing in the substitution of merchandising for the blind, unscientific, and speculative selling of crops.