The department shall issue and cause to be printed and distributed to the commissioners, and to such other persons as it may deem proper, bulletins, charts, photographs or other illustrative material or statements which contain all the information which is best adapted to advance the interest, business, and development of agriculture in the state. The department may broadcast such portions of the illustrative material or statements as are adapted to give effect to this code. It may exhibit or display such data and material as have been collected or prepared, and may incur expenses which are necessarily incidental to the exhibit or display of such data and material.