Technical Report
 

Wheat Variety Screening, Seeding Rate by Variety, and Seed Treatment Trials in the Klamath Basin, 2011

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https://ir.library.oregonstate.edu/concern/technical_reports/pr76fb85c

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  • Grain is produced on upwards of 100,000 acres in the Klamath Basin including nearly 50,000 acres within the Klamath Reclamation Project. Susceptibility to late spring frosts has historically limited winter cereal production and spring cereals have accounted for the majority of production. Klamath Basin Research & Extension Center (KBREC) cereal variety evaluation efforts have focused on spring and winter cereal varieties in the past, but with a shortage of seasonal help, funding, and repeated failures due to bird predation, we discontinued winter wheat trials in 2010. In 2011, small grain variety trials were conducted on-site at KBREC on a mineral soil, and at a Lower Klamath Lake (LKL) site on a silty clay loam muck (high organic matter) soil. The OSU Oregon Spring Elite Yield Trial (OSEYT) and a new Wheat Seeding Rate by Variety Trial, measuring the response of different seeding rates on four common wheat varieties, were only seeded at the KBREC site. The seeding rate trial was done to evaluate whether common grower practice of seeding spring wheat at rates upwards of 200 lb/ac was justified, updating results from an earlier trial done at a LKL site in 2001 and at both a LKL site and at KBREC in 2002 (Clark and Smith, 2001 and 2002), but testing more commonly (Meloidogyne naasi) can be a problem in small grain fields in the Klamath Basin. Thus, a seed treatment trial, sponsored by Bayer Crop Science, was also done in 2011 to measure the effect of several seed treatments on wheat germination, growth, and yield in a LKL commercial field infested with barley root knot nematode.
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