The board of directors by resolution shall find and determine that any such real property that it proposes to sell or dispose of is not needed for the use of such irrigation district and is not essential to its operation, and such finding and determination shall be conclusive upon such irrigation district, and the purchaser shall not be required to show or prove that such property is not needed for the use of such irrigation district or essential to its operation, and such purchaser shall not be required to see that any moneys paid in pursuance of said sale is paid into the general fund of such irrigation district.L. 25: p. 329, § 4. CSA: C. 90, § 511. CRS 53: § 149-1-59. C.R.S. 1963: § 150-1-59.