To ensure the proper management of land acquired pursuant to sections 23-73 to 23-79, inclusive, concurrent with each land acquisition, an amount not to exceed twenty per cent of the appraised value of the land may be allocated from the proceeds of bonds authorized for the purposes of this program to be used for the management of acquisitions or to be deposited in a stewardship account which shall be established by the Comptroller as a separate nonlapsing account within the General Fund. Income derived from the investment of such account shall be credited to such account and such account shall be used for the management of acquisitions. The commissioner may name a cooperator as primary manager of the land and on such nomination may authorize, at reasonable times and in reasonable amounts, payments to the primary manager for expenses incurred in the management of program acquisitions. A cooperator shall not be required to provide matching funds for any expenditure from a stewardship account. Said account shall also receive any other funds, as required by law or any contributions from others.