Section 28
SEC. 28. The purchaser shall have not less than one-fifth of the land broken and cultivated within five years after the date of the award; and before any patent is issued, the purchaser must show of occupancy, cultivation, and improvement of at least one-fifth of the land applied for until the date on which final payment is made: Provided, however, That in case land purchased is to be devoted to pasture, it shall be sufficient compliance with this condition if the purchaser shall graze on the land as many heads of his cattle as will occupy at least one-half of the entire area at the rate of one head per hectare.