Indiana Code Title 24. Trade Regulation § 24-6-9-1

Sec. 1. The following grades for sweet potatoes are hereby established and shall be known as the Indiana Grades for sweet potatoes.

Grade No. 1 shall consist of cured sweet potatoes from warm air storage, shall be not less than one and one-half (1 1/2 ) inches and not more than three and one-half (3 1/2 ) inches in diameter, and not less than four (4) inches and not more than eleven (11) inches in length, but the length may be less than four (4) inches if the diameter is two and one-fourth (2 1/4 ) inches or more.  Sweet potatoes which are graded at the time they are dug shall be not less than one and three-fourths (1 3/4 ) inches and not more than four (4) inches in diameter.  All sweet potatoes classed as grade No. 1 sweet potatoes shall be sound, of similar varietal characteristics, practically free from dirt or other foreign matter, frost injury, decay, bruises, cuts, scars, cracks and damage caused by heat, disease, insects or mechanical or other means.  For the purposes of allowing for variations incident to commercial grading and handling, five per cent (5%) by weight, of any lot may not meet the requirements as to diameter and length, and, in addition, six per cent (6%) by weight may be below the other requirements of this grade.

Grade No. 2 shall consist of sound sweet potatoes, of similar varietal characteristics, not meeting the requirements of grade No. 1, which are free from serious damage caused by dirt or other foreign matter, frost injury, decay, bruises, cuts, scars, cracks, heat, disease, insects or mechanical or other means.  Cured or dried sweet potatoes classified as grade No. 2 shall be not less than one (1) inch and not more than one and one-half (1 1/2 ) inches in diameter.  Green sweet potatoes shall be not less than one and one-half (1 1/2 ) inches and not more than two (2) inches in diameter.  For the purpose of allowing for variations incident to commercial grading and handling, five per cent (5%) by weight, of any lot of cured or dried sweet potatoes may not meet the requirements as to diameter and length, and, in addition, six per cent (6%) by weight, may be below the other requirements of this grade;  and five per cent (5%) by weight, of any lot of green sweet potatoes may not meet the requirements as to diameter and length.