Parent Category: Cereals Category: Wheat

Winter Wheat Production Manual

DEFINITIONS OF PRIMARY GRADE DETERMINANTS. Grain Grading Handbook for Western Canada.

Blackpoint: Blackpoint refers to a distinct dark brown or black discoloration of the germ and surrounding area. Slight discoloration restricted to the germ is disregarded in assessing blackpoint. When the discoloration affects more than one-half of the kernel it is interpreted as smudge.

Common bunt (stinking smut): A plant disease caused by smut fungi, characterized by masses of black spores. Kernels affected by smut may or may not have an associated odour. Samples having no distinct odour but containing smut balls may be specially cleaned by aspiration to remove the smut balls. Samples having no odour but which are tagged with smut spores are considered naturally stained. Samples having a smutty odour and/or which are heavily infected with smut are graded Wheat, Sample C.W./ Canada, Account Odour.

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