There is established the seed distribution program revolving fund, the purpose of which shall be to enable the seed distribution program to operate at a level that will adequately meet the demand for seeds. The fund shall be used for the cultivation and production of seeds and for research and developmental purposes directly related to cultivation and production. The fund shall be administered by the college of tropical agriculture and human resources of the University of Hawaii. All sums withdrawn from the fund shall be reimbursed or restored from the proceeds realized through the sale of seeds.