Whenever any citrus trees have been removed from any parcel of land included in the district, the owner of the parcel of land may file with the board an affidavit particularly describing the parcel of land, and setting forth the fact of the removal therefrom of the trees. Thereupon, the board shall cause an investigation of the parcel of land to be made and, if the board finds the allegations of the affidavit are true, the board shall immediately certify this fact to the county assessor and the amount of citrus acreage removed shall not be assessed on the next assessment roll.