Midge/sawfly damage

Description

The tolerance for sawfly damage and midge damage is combined in the Canadian grading system. The damaged kernels are weighed together and a percentage determined. This percentage is then compared to the Grade Determinant table and the appropriate grade is assigned.

Different insects cause the two damages. The Orange Blossom Wheat Midge causes midge damage. The Wheat Stem Sawfly causes sawfly damage.

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