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Learn about optimizing nitrogen scheduling during late season for improved protein content in durum wheat in Arizona. Explore the impact of nitrogen application and irrigation on pasta quality, cooking tolerance, firmness, color, and grain protein content.
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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, and S. A. White University of Arizona
Pasta Quality • Cooking tolerance • Firmness • Color
N application at anthesis (Average of 20 site years, 9 on-farm, 11 on-station)
N rate at anthesis (Average of 3 cultivars, 3 irrigation levels, and 2 years)
Irrigation during grain fill (Average of 3 cultivars, 3 N rates at anthesis, and 2 years)
N application during grain fill (Average of 3 cultivars)
Arizona Wheat • Mostly durum (> 90%) • 75% exported • Yield ~ 5500 lbs/a • Quality = General and IP
Early N effects on late N Late N (lbs/a)