Protein Scales Protein Scales – Effective Aug. 31, 2023 Spring Wheat: 14.0 pro to 16.0 pro +.05 cents ea. 1/5 13.9 pro to 13.0 pro -.08 cents ea. 1/5 12.9 pro to 11.0 pro -.15 cents ea. 1/5 Winter Wheat: -.01 per 1/5 under 12 to 10 +.01 per 1/5 over 12 to 13