Monday, 6 October 2008

George R. Brown Convention Center, Exhibit Hall E

Bradford Brown, Plant, Soil, and Entomological Sciences, University of Idaho, 29603 U of I Lane, Parma, ID 83660

Winter triticale is an important winter forage for irrigated double crop systems designed to maximize forage and phosphorus (P) removal from compost P enriched soils. Whereas nitrogen timing for maximum small grain seed production has been determined for this irrigated system, the appropriate timing for boot stage forage production and P removal has not. Nitrogen rates (0, 112, and 224 lb urea N/ha) were evaluated at two timings (preplant incorporated or late winter top-dressed) in two years on soil differing in compost P enrichment at the University of Idaho Parma R & E Center. Unlike small grain seed production where winter topdressed urea N is generally more effective than preplant incorporated urea, preplant incorporated urea was the most effective timing for maximizing boot stage triticale forage biomass production and P removal. Forage P uptake from P enriched soil was greater for the highest N rate in both years regardless of whether forage biomass was the highest. Uptake of P appears to be more sensitive than forage yield to available N in compost P enriched soils.

See more of: Management Strategies to Improve Nitrogen Use Efficiency (Posters)
See more of: S08 Nutrient Management & Soil & Plant Analysis

2008 Joint Annual Meeting (5-9 Oct. 2008): Nitrogen Timing for Boot Stage Triticale Forage Yield and Phosphorus Removal.

602-4 Nitrogen Timing for Boot Stage Triticale Forage Yield and Phosphorus Removal.