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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,

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Presentation on theme: "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,"— Presentation transcript:

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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