Sec. 91.122. GRADE NO. 1. Grade No. 1 potatoes: (1) are sound; (2) are practically free from dirt or foreign matter, frost injury, sunburn, second growth, cuts, mechanical damage, or damage from disease or insects; (3) are a minimum of 1-3/4 inches in diameter; and (4) have similar varietal characteristics. Acts 1981, 67th Leg., p. 1227, ch. 388, Sec. 1, eff. Sept. 1, 1981.