OKLAHOMA SMALL GRAINS VARIETY PERFORMANCE TESTS

Transcription

1 OKLAHOMA SMALL GRAINS VARIETY PERFORMANCE TESTS J.T. Edwards R.D. Kochenower R.E. Austin M.K. Inda B.F. Carver R.M. Hunger Partial funding provided by OKLAHOMA STATE UNIVERSITY DEPARTMENT OF PLANT AND SOIL SCIENCES PRODUCTION TECHNOLOGY REPORT PT Vol. 18 No. 5

2 ACKNOLWEDGMENTS The assistance of the following individuals, companies, and organizations is gratefully acknowledged Funding was provided by Oklahoma Wheat Commission Oklahoma Wheat Research Foundation State/Area Extension Staff Roger Gribble, OSU Area Agronomist Northwest District Bob Woods, OSU Area Agronomist Northeast District Mark Gregory, OSU Area Agronomist Southwest District Curtis Bensch, Oklahoma Panhandle Research and Extension Center, Goodwell County Staff Thomas Puffinbarger, Alfalfa County Extension Educator Rick Nelson, Beaver County Extension Educator Greg Hartman, Beckham County Extension Educator David Nowlin, Caddo County Extension Educator Brad Tipton, Canadian County Extension Educator Justin Barr, Ellis County Extension Educator Scott Price, Grant County Extension Educator Gary Strickland, Jackson County Extension Educator Chad Otto, Kay County Extension Educator Keith Boevers, Kingfisher County Extension Educator Jeff Bedwell, Major County Extension Educator Steve Kraich, Texas County Extension Educator Aaron Henson, Tillman County Extension Educator Jim Rhodes, Woods County Extension Educator Station Superintendents Erich Wehrenberg, Agronomy Research Station, Stillwater Rick Matheson, Agronomy Research Station, Perkins Tom Pickard, Eastern Research Station, Haskell Ray Sidwell, North Central Research Station, Lahoma Lawrence Bohl, Oklahoma Panhandle Research and Extension Center, Goodwell The following donated materials (seed, fertilizer, etc.) for variety trials AgriPro Wheat, Vernon, TX Johnston Enterprises, Enid, OK Westbred LLC, Haven, KS Farmer cooperators for each location are listed in the heading of variety trial results. In addition, we thank the following who donated land, resources and time, but whose variety trial location was not harvestable due to environmental factors such as drought. Don Schieber, Kildare, OK Larry Bassel, Olustee, OK Brook Strader, Okeene, OK 2

3 CONTENTS Wheat crop overview. 4 Fall forage production... 6 Variety comparison chart. 7 Summary of all locations year average test weight of varieties results by location Alva. 10 Apache Balko 12 Buffalo. 13 Cherokee.. 14 Elk City 15 El Reno 16 Gage 17 Haskell. 18 Hooker. 19 Kingfisher 20 Lahoma 21 Lamont 22 Marshall 23 Plant height, lodging scores, and heading dates.. 24 This and other wheat-related publications can be found at: 3

4 2006 WHEAT CROP OVERVIEW Production season The wheat production season will go down among the driest in recorded history for many areas of Oklahoma. There were a few late-summer/early-fall rains that allowed for emergence of early-septembersown wheat, and some areas of the state benefited from an early-october rainfall. The majority of the state, however, did not see significant rainfall again until April of As a result there were many acres of wheat sown in the fall of 2005 that did not emerge until the spring of Those who sowed wheat in early September into adequate moisture conditions were generally pleasantly surprised by their forage production and cattle gains. Production in our wheat forage variety test sites, for example, were around 500 lb/ac below average, which was not bad considering the extreme drought conditions. Reports of cattle gains above 3 lb/hd/day were not uncommon and outstanding gains were probably the result of very few cold days and almost no damp/wet conditions during the winter of Although initial wheat forage production was adequate in many areas of Oklahoma, re-growth during and after grazing was almost nonexistent due to drought. Further, drought conditions inhibited root growth and plants were not anchored well at the time of grazing, which led to pulled plants and stand losses. As a result, dual-purpose wheat yields across the state were extremely low and there was great disparity between grain yield of grazed vs. nongrazed wheat. Herbicide efficacy was generally much lower than normal. This was mostly due to drought-stressed weeds and a lack of activating rainfall. This frequently resulted in weedy fields at harvest and prompted some growers to apply chemical harvest aids. High nitrogen fertilizer prices, low yield potential and extreme drought meant that most producers were very conservative in top-dress nitrogen application rates. With all things considered this generally proved to be the right call, as response to supplemental nitrogen fertilizer was less than normal. Spring freezes injured some wheat in lowlying areas of north-central and northeastern Oklahoma in March. Likewise, temperatures dipped below 32 0 F in the Panhandle on April 26. Unfortunately this cold snap caught some fields just at flowering and greatly reduced the yield potential of some outstanding fields of irrigated wheat. Harvest proceeded well ahead of schedule in 2006 and the majority of wheat was harvested by mid-june (approx. 1-2 weeks ahead of schedule). Harvested acreage was much lower than normal, with most acres west of I-35 and south of I-40 being abandoned prior to harvest. At the time of this report, the 2006 crop was estimated at 68.2 million bushels with an average yield of 22 bu/ac. Pest problems Drought certainly reduced yield potential of the wheat crop, but it did not seem to have a significant effect on insect pests. Some newly-emerged wheat fields were lost and many others were sprayed for fall armyworm in September. Hessian fly was a widespread problem in north central Oklahoma, with some fields having infestation levels high enough to result in total crop loss. 4

5 Aphid numbers were generally not that high in the fall of 2005, but barley yellow dwarf virus symptoms were still widespread in the spring of In addition, many fields in central and southern Oklahoma had to be sprayed for greenbugs in the spring of Other insect problems included brown wheat mite and wheat head armyworm. Damage from these two insects, however, was not as widespread as that from Hessian fly and greenbugs. High plains virus and wheat streak mosaic virus were both major problems in the Oklahoma Panhandle. These two viruses resulted in the destruction of several fields of irrigated wheat, and theories about the wheat curl mite over summering in conservation reserve program acres in the corners of pivots have producers in this region rethinking management strategies for these viruses. Dryland root rot caused by the fungus Fusarium was another disease that caused significant losses in certain areas and fields of Oklahoma wheat this past season. In the late fall, fields infected with dryland root rot and common root rot (Bipolaris) were both found. However, the dry and hot conditions through the winter and spring greatly favored dryland root rot, and by early April fields severely infected with dryland root rot were observed across southwestern, central, west-central and to a lesser extent, northern Oklahoma. Many of these fields were abandoned or grazed-out. Foliar diseases were generally not a major yield-limiting factor during the wheat production season. There was some powdery mildew present on lower leaves of susceptible varieties, but infestations rarely made it up to the flag leaf. Leaf rust could be observed on some varieties later in the season, but disease incidence and severity were generally below economic thresholds for control. Methods Locations. Just like farmers fields, our variety trials suffered due to drought. Some locations such as Kildare, Okeene, and Frederick were dry at planting and never really had satisfactory emergence. Others, such as Olustee had satisfactory emergence but then perished due to drought. We lost our irrigated variety trial at Goodwell due to application errors and our nonirrigated trial at Goodwell due to a hail storm right after crop maturity. Cultural Practices. We lost our no-till locations due to drought, so all harvested locations this year were conventionally tilled. We used a 6-inch row spacing and plots were eight rows wide and either 20 or 40 feet long. All plots received 50 lb/ac of in-furrow at planting. The El Reno and Cherokee locations were sown at 120 lb/ac and all other locations were sown at 60 lb/ac. Grazing pressure, nitrogen fertilization, insect and weed control decisions were all made on a location-bylocation basis and reflect standard management practices for the area. Additional information on the Web A copy of this publication as well as additional variety information and more information on wheat management can be found at 5

6 Table 1. Fall forage production of winter wheat varieties sown in 2004 and 2005 at El Reno, OK. Year 2 -Year Source Variety Average lb/ac AgriPro Fannin Oklahoma Endurance Oklahoma Deliver Oklahoma Ok AgriPro Cutter Oklahoma Custer Oklahoma AgriPro Jagalene Kansas Jagger Kansas Overley AgriPro AP 502CL Mean LSD Shaded cells within a column are not statistically different from the highest-yielding variety within that column Table 2. Fall forage production of winter wheat varieties sown in 2004 and 2005 at Perkins, OK. Year 2 -Year Source Variety Average lb/ac AgriPro Fannin Oklahoma Deliver AgriPro Cutter Oklahoma Endurance Oklahoma Custer AgriPro Jagalene Oklahoma Ok Oklahoma AgriPro AP 502CL Kansas Overley Kansas Jagger Mean LSD Shaded cells within a column are not statistically different from the highest-yielding variety within that column *More information on fall forage production by wheat varieties can be found in OSU extension publication PT Fall forage production by winter wheat varieties in Oklahoma. To download a copy, visit 6

7 Wheat Variety Comparison Chart Production Technology Vol. 18, No. 6 July, 2006 Lodging First Hollow Stem Maturity High-temp germ. sensitivity Coleoptile Length Acid Soil Tolerance Hessian Fly Source Entry HARD RED WINTER WHEAT VARIETIES AgriPro AP502 CL 3 VE VE S P-94 AgriPro Coronado - VE VE P-94 AgriPro Cutter 4 VE M S P-94 AgriPro Dumas 1 E E S P-94 AgriPro Fannin 2 VE VE P-94 AgriPro Jagalene 2 E E S P-94 AgriPro Longhorn 1 E L ~ 2 - P AgriPro Ogallala 1 VE M ~ 3 - P AgriPro Thunderbolt 2 M L P AgriPro Tomahawk 2 L VL ~ 2 - P AGSECO VE M ~ 2 - N AGSECO Onaga 2 E E PR ~ 2 - N CSU Above 3 VE VE P-94 KSU Karl 92 3 E E ~ P KSU L L S P-94 KSU E E PR P-94 KSU E E P KSU VE VE P KSU Ike 3 VL L PR P-94 KSU Jagger 3 VE VE S P-94 KSU Overley 2 VE VE S A-94 NE Scout L N OSU Triumph 64 4 L M N OSU VL L P-94 OSU Chisholm 2 L E N OSU Cimarron 3 - E N OSU Custer 2 E E N OSU Deliver 3 L E A-94 OSU Endurance 2 VL M S A-94 OSU OK Bullet 1 E E S A-94 OSU Ok101 2 E VE S N OSU Ok102 1 VL L S N OSU Okfield 2 M L A-94 OSU Tonkawa 1 M E N TX Lockett 4 E VL 1-2 S P-94 TX TAM E M P TX TAM VE VE S P-94 TX TAM M L PR P-94 TX TAM E E N TX TAM E E P TX TAM E E P-94 TX TAM L E P-94 Westbred Santa Fe 2 VE E S A-94 HARD WHITE WHEAT VARIETIES AgriPro Oro Blanco - VE E P-94 KSU Betty 3 E M P-94 KSU Danby 3 VL L A-94 KSU Heyne 3 VE M P-94 KSU Lakin 2 VL M P-94 KSU Trego 4 L M S P-94 OSU Guymon 2 VE L A-94 OSU Intrada 4 E E N General: Maturity & First Hollow Stem Coleoptile: Hessian Fly Variety Protection: 1 = Excellent VE = Very Early 1 = Longest S = Susceptible N = Not protected, P + Protected PVPA = Poor E = Early 4 = Shortest PR = Partially resistant P - 94 = Protected PVPA M = Medium R = Resistant A-94 = PVPA applied for L = Late VL = Latest Oklahoma State University, Department of Plant and Soil Sciences, Production Technology Report PT Jeff Edwards - Small Grains Extension; Bob Hunger - Plant Pathology Extension; Brett Carver - Wheat Breeding; and Tom Royer - Extension Entomologist Septoria Soil- borne Mosaic Leaf Rust Stripe Rust Powdery Mildew Tan Spot Variety Protection 7

8 Cherokee Grazed Elk City El Reno 2006 Oklahoma Wheat Variety Trial Summary Non-grazed Gage Alva Apache Apache fungicide bu/ac AP502CL Avalanche (W) Custer Cutter Danby (W) Deliver Endurance Fannin Guymon (W) Ike Intrada (W) Jagalene Jagger JEI Lakin (W) Neosho OK Bullet Ok Okfield Overley Protection CL Santa Fe Stanton TAM TAM Trego (W) OK93P656H OK03918C OK03928C OK OK OK OK OK OK0522W OK00611W Mean LSD (0.05) Balko Buffalo Haskell Hooker Kingfisher Lahoma Lahoma fungicide Lamont Marshall early-sown Marshall late-sown 8

9 OK93P656H Intrada OK Bullet Jagalene Danby Neosho OK03918C Coronado Guymon Santa Fe Overley Trego Fannin Deliver Thunderbolt Cossack Cutter Chisholm 2174 Ok102 Custer Ok Endurance TAM 111 Jagger Avalanche Stanton JEI Okfield Protection CL Ike Sturdy 2K 2158 Cisco Lakin TAM 110 Above AP502CL TAM 302 Average = 58.9 lb/bu year average test weight (lb/bu) of wheat varieties in the OSU variety testing program 9

10 Cooperator: Wes Mallory Management: Grain only Soil type: Grant silt loam Soil test information: ph = 6.1, P = 91, K = 704 Planting date: Test Weight Source Variety Year -----bu/ac Year lb/bu--- AgriPro AP502CL Kansas Jagger Kansas Overley AgriPro Jagalene Oklahoma OK Bullet Westbred Santa Fe AgriPro TAM AgriPro Cutter Oklahoma Okfield AgriPro Fannin Oklahoma Custer Oklahoma Guymon (W) Oklahoma Oklahoma Endurance Johnstons JEI Oklahoma Ok Oklahoma Deliver OK OK00611W (W) OK OK93P656H OK OK0522W (W) Mean LSD (0.05) (W) = Hard white wheat variety Alva Variety Trial 10

11 Apache Variety Trial Cooperator: Paul Jackson Management: Grain only Soil type: Hollister silt loam Soil test information: ph = 6.5, P = 50, K = 470. Planting date: Fungicide = 10 oz/ac on April 3, 2006 Test Weight Year 3-Year* Source Variety No Fungicide Fungicide Diff. No Fungicide Fungicide Diff. No Fungicide No Fungicide Fungicide Diff bu/ac lb/bu----- AgriPro Jagalene Oklahoma OK Bullet Kansas Jagger AgriPro Cutter Kansas Overley Oklahoma Endurance Westbred Santa Fe Oklahoma Deliver Oklahoma Ok AgriPro TAM Oklahoma Custer Johnstons JEI Oklahoma Okfield Oklahoma AgriPro AP502CL AgriPro Fannin OK OK OK93P656H OK00611W OK OK0522W Mean LSD (same variety + or - fung.) LSD (any two varieties ) * 2005 was the first year for the Apache fungicide trial, so there are no 3-year fungicide/no fungicide comparisons 11

12 Balko Variety Trial Cooperator: Steve Frantz Management: Grain only Soil type: Ulysses-Richfield complex Soil test information: ph = 8.1, P = 32, K = 836 Planting date: Test Weight Source Variety Year -----bu/ac Year lb/bu----- Colorado Avalanche (W) AgriPro Cutter Kansas Danby (W) Oklahoma OK Bullet AgriPro TAM Kansas Trego (W) AgriPro Jagalene Oklahoma Okfield Texas TAM AgriPro AP502CL Oklahoma Guymon (W) Kansas Ike Kansas Jagger Kansas Stanton Oklahoma Intrada (W) Westbred Santa Fe Oklahoma Custer Oklahoma Ok Kansas Overley Oklahoma Johnstons JEI Kansas Lakin (W) Oklahoma Deliver Oklahoma Endurance AgriPro Fannin OK93P656H OK Mean LSD (0.05) (W) = Hard white wheat variety 12

13 Buffalo Variety Trial Cooperator: NRCS Management: Grain only Soil type: St. Paul silt loam Soil test information: ph = 7.1, P = 71, K = 598 Planting date: Test Weight Source Variety Year -----bu/ac Year lb/bu----- AgriPro Jagalene Kansas Jagger Johnstons JEI AgriPro Cutter Kansas Overley AgriPro TAM Oklahoma Endurance Oklahoma OK Bullet Oklahoma Okfield Oklahoma AgriPro AP502CL Oklahoma Deliver Oklahoma Custer Westbred Santa Fe AgriPro Fannin OK OK93P656H OK Mean LSD (0.05)

14 Cherokee Variety Trial Cooperator: Kenneth Failes Management: Dual purpose Soil type: Dale silt loam Grazing pressure: Heavy* Planting date: Soil test information: ph = 6.2, P = 53, K = 557 Test Weight Source Variety ** 2-Year 3-Year bu/ac lb/bu----- Kansas Jagger AgriPro Jagalene Kansas Overley Agseco ProtectionCL AgriPro Cutter Oklahoma OK Bullet Westbred Santa Fe AgriPro AP502CL Johnstons JEI Oklahoma Okfield Oklahoma Ok Oklahoma Oklahoma Endurance AgriPro Neosho AgriPro Fannin Oklahoma Deliver OK OK OK OK93P656H OK00611W OK OK0522W OK Mean LSD (0.05) *** * Plots were grazed from November 9, 2005 until February 26, An average of 118 lb/ac of beef weight gain was removed. **Yields were reduced by brown wheat mite infestation in conjuction with severe drought ***Samples were too small to measure test weight on a plot-by-plot basis; therefore, all four replications were combined to measure test weight. 14

15 Elk City Variety Trial Cooperator: Carl Simon Management: Dual purpose Soil type: Grandfield sandy loam Grazing pressure: Light Planting date: Soil test information: ph = 5.1, P = 48, K = 320 Test Weight Source Variety Year -----bu/ac Year lb/bu----- Oklahoma OK Bullet AgriPro Cutter AgriPro Jagalene Kansas Jagger Westbred Santa Fe AgriPro AP502CL Kansas Overley Oklahoma Okfield Oklahoma Endurance Oklahoma AgriPro Fannin Oklahoma Custer Johnstons JEI Oklahoma Deliver Oklahoma Ok AgriPro TAM OK OK93P656H OK OK OK OK Mean LSD (0.05)

16 El Reno Variety Trial Cooperator: Bornemann Farms Management:Dual purpose Soil type: Pond creek silt loam Grazing pressure: Heavy* Planting date: Soil test information: ph = 5.5, P = 106, K = 328 Test Weight Source Variety Year bu/ac lb/bu-- Kansas Overley Oklahoma OK Bullet AgriPro TAM AgriPro Jagalene Oklahoma Okfield AgriPro Cutter Oklahoma Deliver Kansas Jagger AgriPro AP502CL Oklahoma Endurance Westbred Santa Fe Oklahoma Ok Oklahoma Oklahoma Custer Johnstons JEI AgriPro Fannin OK OK03918C OK00611W OK0522W OK93P656H OK OK OK03928C Mean LSD (0.05) * Plots were in a 129 acre field that was grazed from November 10, 2005 to February 10, Stocking rate was 92 head (1.4 acres per calf) with an average daily gain of 2.75 lbs/hd, which equates to 180 lb/ac of beef weight gain removed. 16

17 Cooperator: Curtis Torrance Management:Dual Purpose* Soil type: St. Paul silt loam Grazing pressure: Light Planting date: Soil test information: ph = 7.4, P = 222, K = 730 Test Weight Source Variety Year* -----bu/ac Year* lb/bu----- Oklahoma OK Bullet Johnstons JEI Oklahoma Ok AgriPro Cutter AgriPro TAM AgriPro AP502CL Oklahoma Endurance AgriPro Jagalene Westbred Santa Fe Oklahoma Deliver Kansas Jagger Oklahoma Okfield Oklahoma Oklahoma Guymon (W) Kansas Overley Oklahoma Custer AgriPro Fannin OK93P656H Mean LSD (0.05) N.S.** * Plots were not grazed in the crop year Gage Variety Trial *N.S. = differences in test weight were nonsignificant at the P= 0.05 level. 17

18 Haskell Variety Trial Cooperator: Eastern Research Station Management: Grain only Soil type: Taloka silt loam Soil test information: ph = 6.6, P = 182, K = 494 Planting date: Test Weight Source Variety Year 3-Year bu/ac lb/bu----- Oklahoma Endurance Kansas Oklahoma OK Bullet AgriPro Cutter AgriPro Jagalene Kansas Jagger Kansas Overley Westbred Santa Fe Johnstons JEI Oklahoma Okfield Oklahoma AgriPro AP502CL Oklahoma Deliver Oklahoma Ok AgriPro Fannin AgriPro Neosho Agseco ProtectionCL OK93P656H OK OK03918C Mean LSD (0.05) *Overley and Jagger sustained significant bird damage (greater than 50%) prior to harvest in 2004 and 2005 Oklahoma Cooperative Extension Service publicaiton PT

19 Cooperator: Tom Arnold Management: Grain only Soil type:dalhart fine sandy loam Soil test information: ph = 6.9, P = 51, K = 1032 Planting date: Test Weight Source Variety bu/ac lb/bu----- Texas TAM Oklahoma OK Bullet Oklahoma Endurance Kansas Trego (W) AgriPro Jagalene Kansas Jagger Oklahoma Guymon (W) Oklahoma Deliver AgriPro TAM Oklahoma Intrada (W) Mean LSD (0.05) 4 1 (W) = Hard white wheat variety Hooker Variety Trial 19

20 Kingfisher Variety Trial Cooperator: Rodney Mueggenborg Management: Grain only Soil type: Renfro clay loam Soil test information: ph = 6.8, P = 49, K = 559 Planting date: Test Weight Source Variety Year -----bu/ac Year lb/bu----- AgriPro Cutter Kansas Jagger Westbred Santa Fe Oklahoma Endurance Oklahoma OK Bullet Oklahoma Okfield AgriPro Jagalene Kansas Overley Oklahoma Johnstons JEI Oklahoma Ok AgriPro AP502CL Oklahoma Deliver AgriPro Fannin Oklahoma Custer AgriPro TAM OK OK OK03918C OK0522W OK93P656H OK00611W Mean LSD (0.05)

21 Lahoma Variety Trial Cooperator: North Central Research Station Management: Grain only Soil type: Pond creek silt loam Soil test information: ph = 6.3, P = 68, K = 492 Planting date: Fungicide = 14 oz/ac on April 8, 2006 Test Weight Year 3-Year Source Variety No Fungicide Fungicide Diff. No Fungicide Fungicide Diff. No Fungicide Fungicide Diff. No Fungicide Fungicide Diff bu/ac lb/bu----- Kansas Overley Oklahoma OK Bullet Oklahoma Endurance AgriPro Cutter AgriPro Jagalene Agseco ProtectionCL Westbred Santa Fe AgriPro AP502CL Kansas Jagger AgriPro Neosho Oklahoma Ok AgriPro Fannin Johnstons JEI Oklahoma Okfield Oklahoma Deliver Oklahoma OK OK93P656H OK Mean LSD (same variety + or - fung.) LSD (any two varieties )

22 Lamont Variety Trial Cooperator: Kirby Farms Management:Grain only Soil type: Pond creek silt loam Soil test information: ph = 5.8, P = 65, K = 544 Planting date: Test Weight Source Variety Year* bu/ac lb/bu----- Kansas Jagger AgriPro Jagalene Westbred Santa Fe Oklahoma OK Bullet AgriPro Cutter Agseco ProtectionCL AgriPro AP502CL Kansas Overley Johnstons JEI AgriPro Fannin Oklahoma Ok Oklahoma Okfield Oklahoma Endurance Oklahoma Deliver AgriPro Neosho Oklahoma OK93P656H OK OK OK OK0522W OK00611W OK03918C Mean LSD (0.05) *Variety trial was not harvested in , so the two year average is the average of the and crop years 22

23 Marshall Variety Trial Cooperator: Henry Fuxa Management: Grain only and Dual purpose Soil type: Kirkland silt loam Soil test information: ph = 5.1, P = 45, K = 269 Planting date: Early-sown = ; Late-sown = Test * 2-Year 3-Year Weight Source Variety Earlysown Latesown Diff. Grazed Nongrazed Diff. Grazed Nongrazed Diff. Late-sown bu/ac lb/bu--- Oklahoma OK Bullet AgriPro Cutter Oklahoma Ok Oklahoma Endurance Oklahoma AgriPro Jagalene Kansas Jagger Kansas Overley Westbred Santa Fe Oklahoma Okfield AgriPro TAM Oklahoma Deliver AgriPro Fannin Oklahoma Custer Johnstons JEI AgriPro AP502CL OK OK93P656H OK00611W OK0522W Mean LSD for any two means within the same year * Due to insect damage and overall poor growth, the early-sown (normally dual-purpose) plots were not grazed in

24 Plant height, lodging score, and heading date for selected variety trials in Oklahoma in 2006 Plant Height Lodging Heading date Balko Buffalo Hooker Kingfisher Lahoma Haskell Lahoma Stillwater early-sown Stillwater late-sown Variety inches scale* /13 4/ /20 4/14 4/14 AP 502CL /15 4/7 4/10 Avalanche (W) /13 4/15 Custer /10 4/13 Cutter /18 4/12 4/14 Danby (W) /11 4/15 Deliver /19 4/11 4/14 Endurance /19 4/12 4/14 Fannin /18 4/8 4/11 Guymon (W) /14 4/15 Ike /14 4/16 Intrada (W) /11 4/14 Jagalene /18 4/10 4/13 Jagger /16 4/9 4/13 JEI /19 4/12 4/14 Lakin (W) /11 4/13 Neosho /17 4/11 4/13 OK Bullet /19 4/13 4/14 Ok /17 4/11 4/13 Okfield /19 4/13 4/15 Overley /16 4/12 4/13 ProtectionCL /15 4/6 4/11 Santa Fe /17 4/9 4/12 Stanton /13 4/14 TAM /7 4/10 TAM /11 4/14 Trego (W) /12 4/14 OK93P656H /19 4/12 4/14 OK03918C /11 4/13 OK03928C /10 4/12 OK /10 4/11 OK /18 4/12 4/14 OK /14 4/18 OK /16 4/9 4/11 OK /13 4/15 OK0522W /11 4/13 OK00611W /13 4/14 * Scale of 0-10 with 0 representing no lodging and 10 representing 100% lodging 24