Grades
U.S. No. 1.
U.S. Commercial.
Tolerances
10% total defects, including 2% soft decay.
Good Delivery Guidelines:
15% total, including 4% decay
Common Defects:
Damage by:
(a) Bruising when materially affecting the appearance of three or more head
leaves.
(b) Burst heads when affecting five or more head leaves.
(c) Thrip injury, when on a 3 lb. head the aggregate area exceeds the equivalent area of a 2 inch circle on two head leaves
(d) Worm injury on the outer head leaves or wrapper leaves which materially affects the appearance of the head or worm holes which penetrate three or more head leaves into the compact portion of the head.
(e) Mechanical damage when the cut is more than 2 inches in length and deeper than
three head leaves.
(f) Sunscald when the affected area exceeds more than 1/4 the area of the
crown or penetrates more than two head leaves.
(g) Tipburn when present on more than three head leaves or when the aggregate area exceeds that of a 1 x 2 inch rectangle.
(h) Yellowing and discoloration on a head with four wrapper leaves; score as damage when the wrapper leaves are affected by discoloration more than the area equivalent in size to the smallest wrapper leaf; or, when the head leaves are affected by discoloration that materially detracts from the appearance of the head. Also, score as damage when the
combination of discoloration on the wrapper leaves and head leaves exceeds the guideline for either.
Serious damage by:
(a) Bruising when seriously affecting the appearance of five or more head leaves.
(b) Burst heads when affecting nine or more head leaves.
(c) Thrip injury, when on a 3 lb. head the aggregate area exceeds the equivalent area of a 2-1/4 inch circle on three head leaves
(d) Worm injury on the outer head leaves or wrapper leaves which seriously affects the appearance of the head or worm holes which penetrate six or more head leaves into the compact portion of the head.
(e) Mechanical damage when the cut is more than 4 inches in length and deeper than
five head leaves.
(f) Sunscald when the affected area exceeds more than 1/2 the area of the
crown or penetrates more than three head leaves.
(g) Tipburn when present on more than five head leaves or when the aggregate area exceeds that of a 1 x 4 inch rectangle.
(h) Yellowing and discoloration when the wrapper leaves are affected by discoloration more than the area equivalent in size to the two smallest wrapper leaves; or, when the head leaves are affected by discoloration that seriously detracts from the appearance of the head. Also, score as serious damage when the combination of discoloration on the wrapper leaves and head leaves exceeds the guideline for either.