Nutrien Ag Solutions Seed Guide 2018 | Page 19

CANADIAN WESTERN AMBER DURUM (CWAD) WHEAT YIELD PROTEIN (%) DESCRIPTION 88 62.5 14.4 – 13.7 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; moderately resistant to stripe rust 14.6 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 14.3 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 (% STRONGFIELD) MATURITY LODGING HEIGHT Strongfield (chk) 100 S/M P AC Brigade NEW CDC Carbide CDC Fortitude 110 103 103 M/L F S P M F 96 90 87 (LB/BU) 63.1 62.2 62.9 100 S/M G 89 62.4 14.5 An early-maturing durum variety with stronger rust resistance, shorter straw and improved standability. Disease package: High resistance to all rusts 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 AC Navigator * (CM) TEST WEIGHT VARIETY Source: 2014-2016 CPS Local Performance Checks, 13 Locations, 22 Trials, 66 Replications *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 17