Nutrien Ag Solutions Seed Guide 2019 | Page 15

C A N A D I A N W E S T E R N A M B E R D U R U M ( C WA D ) W H E AT VARIETY Strongfield (chk) AC Brigade TEST HEIGHT PROTEIN MATURITY LODGING WEIGHT (% STRONGFIELD) (CM) (%) YIELD 100 109 E/M P M/L F 87 94 64.3 64.4 14.4 – 13.8 Highest yields and test weights plus best rated durum for FHB. The best choice for durum growers. Disease package: Resistant to stem and leaf rust; MR to stripe rust 14.5 The first and only midge tolerant durum wheat in the Proven Seed cereals line-up. Yields are comparable to the class leaders. Disease package: Resistant to stem, leaf and stripe rust and MS to FHB CDC Carbide VB NEW 103 CDC Fortitude DESCRIPTION (LB/BU) E P 89 63.7 103 M F 86 64.4 14.5 The first solid stem variety. Provides sawfly resistance for successful harvest results. Excellent option for high fertility or irrigation acres. Disease package: Resistant to stem and leaf rust; MS to FHB 99 E/M G 88 64.3 14.4 An early-maturing durum variety with stronger rust resistance, shorter straw and improved standability. Disease package: High resistance to all rusts 109 E/M F 88 64.3 14.9 High yield and test weight, strong straw, excellent protein. 94 M F 80 62.2 13.8 A great variety for growers in southwest Saskatchewan and southeast Alberta. Available with a grain production premium contract on limited acres. CDC Vivid CDC Dynamic NEW AC Navigator * Source: 2014-2017 Nutrien Ag Solutions Local Performance Checks – 102 replicates | *Source: 2016 Saskatchewan Regional Variety Trials Maturity: E = Early, M = Mid, L = Late | Lodging: P = Poor, F = Fair, G = Good, VG = Very Good Interspersed refuge extends midge tolerance Without an interspersed refuge system, midge tolerance could break down within 10 years. If midge tolerant wheat is grown in a pure stand, only the small number of naturally occurring virulent (resistant) midge survive. The virulent midge would mate only with other virulent midge. An interspersed refuge system could extend the life of midge tolerance to 90 years or longer. A large virulent population quickly builds and feeds on tolerant varieties. Virulent Midge Tolerant Wheat Non-virulent Midge Susceptible Wheat Non-virulent midge survive on the 10% susceptible plants interspersed throughout the wheat field. The non-virulent midge would inter-mate with virulent midge. The progeny of this cross would be non-virulent. This prevents a build up of a large virulent midge population. Virulent Midge Tolerant Wheat Non-virulent Midge Susceptible Wheat Cereals 13