The secretary shall:
(1) Make a survey, investigation, and classification of the lands connected with the state institutions under his or her control, and determine which thereof are of such character as to be most profitably used for agricultural, horticultural, dairying, and stock raising purposes, taking into consideration the costs of making them ready for cultivation, the character of the soil, its depth and fertility, the number of kinds of crops to which it is adapted, the local climatic conditions, the local annual rainfall, the water supply upon the land or available, the needs of all state institutions for the food products that can be grown or produced, and the amount and character of the available labor of inmates at the several institutions;
(2) Establish and carry on suitable farming operations at the several institutions under his or her control;
(3) Supply the several institutions with the necessary food products produced thereat;
(4) Exchange with, or furnish to, other institutions, food products at the cost of production;
(5) Sell and dispose of surplus food products produced.