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Late Season N for Grain Protein Enhancement for Irrigated Durum

Late Season N for Grain Protein Enhancement for Irrigated Durum. M. J. Ottman, T. A. Doerge, T. L. Thompson, E. A. Riley-Saxton, E. C. Martin, S. H. Husman, and S. A. White University of Arizona. Nitrogen Scheduling. Pasta Quality. Cooking tolerance Firmness Color. Crop N Content.

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Late Season N for Grain Protein Enhancement for Irrigated Durum

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  1. Late Season N for Grain Protein Enhancement for Irrigated Durum M. J. Ottman, T. A. Doerge, T. L. Thompson, E. A. Riley-Saxton, E. C. Martin, S. H. Husman, and S. A. White University of Arizona

  2. Nitrogen Scheduling

  3. Pasta Quality • Cooking tolerance • Firmness • Color

  4. Crop N Content

  5. N application at anthesis (Average of 20 site years, 9 on-farm, 11 on-station)

  6. N rate at anthesis (Average of 3 cultivars, 3 irrigation levels, and 2 years)

  7. Irrigation during grain fill (Average of 3 cultivars, 3 N rates at anthesis, and 2 years)

  8. N application during grain fill (Average of 3 cultivars)

  9. Arizona Wheat • Mostly durum (> 90%) • 75% exported • Yield ~ 5500 lbs/a • Quality = General and IP

  10. Early N effects on late N Late N (lbs/a)

  11. Flag leaf N vs. Protein

  12. Stem nitrate vs. Protein

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