OKFIELD

Okfield is a hard red winter wheat containing the Clearfield gene technology released by the OAES in 2005. The variety is an exclusive license to OGI.

Okfield is cross between an experiment breeding line from TX A&M and 2174 providing resistance to imidazolinone (Beyond) chemical.

Okfield has a relatively large kernel size but test weight is average. It is a moderately tall semi-dwarf with about the same straw strength as Ok101. It is resistant to powdery mildew in adult plants.

Okfield is intermediate in acid-soil tolerance, Moderately susceptible to wheat soil-borne mosaic, stripe rust, stem rust, septoria leaf blotch, and tan sport. It is susceptible to leaf rust.

Okfield should appeal to grain-only and dual-purpose producers who place greater emphasis on winter grazing potential and grain production. Forage accumulation in early fall is average but forage regrowth during the grazing period and recovery from grazing are above average.

Adaptation to dual-purpose systems that emphasize grain production following grazing throughout central and Western Oklahoma is a strong suit of Okfield. Stand establishment will likely be delayed for Okfield when planted extremely early or in hot soils compared with rapid emerging varieties like Jagger and Ok101.

CENTERFIELD
Centerfield is widely adapted to Oklahoma and combines into one cultivar the primary adaptation zones ascribed to AP502CL (western Oklahoma) and 2174 (central Oklahoma). It will be primarily positioned for the north central and central portions of the state prone to acquire wheat soilborne mosaic and spindle streak mosaic virus and low pH areas prone to aluminum toxicity.

Centerfield, like Okfield, will not only appeal to grain-only producers but also to dual-purpose producers who place greater emphasis on winter grazing potential and grain production. Forage accumulation in the early fall is above-average, but we do not recommend extremely early seeding of Centerfield due to its heat sensitivity during germination (similar to 2174).