2016 Arkansas Corn Standardized County Hybrid Trials

Transcription

1 06 Arkansas Corn Standardized County Trials U.S. Department of Agriculture and County Governments Cooperating

2 The University of Arkansas System Division of Agriculture offers all its Extension and Research programs and services to all eligible persons without regard to race, color, sex, gender identity, sexual orientation, national origin, religion, age, disability, marital or veteran status, genetic information, or any other legally protected status, and is an Affirmative Action/Equal Opportunity Employer.

3 Table of Contents Authors and Acknowledgments Introduction Arkansas Corn Standardized County Trials District Map River Valley & Southwest District Reports (Conway, Faulkner, Lafayette, Logan and Yell) Central District Reports (Lee, Lonoke, Monroe, Prairie, White and Woodruff) Northeast District Reports (Craighead, Crittenden, Cross, Greene, Lawrence/Randolph, Mississippi and Poinsett)... 8 Southeast District Reports (Ashley, Chicot, Desha, Lincoln, and Phillips) Appendix A. Corn Relative Maturity, Traits and Participants Page

4 Arkansas Corn Standardized County Trials, 06 Conducted by: Kevin Lawson Program Associate Corn and Grain Sorghum Verification Dr. Jason Kelley Extension Agronomist Wheat and Feed Grains County District County Agent Cooperator Ashley Southeast Kevin Norton Keith Ladd Chicot Southeast Gus Wilson SMAC Farms Conway River Valley Kevin VanPelt Brothers Farm Craighead Northeast Branon Thiesse John Johnson Crittenden Northeast Russ Parker Phil Pirani Cross Northeast Rick Wimberley Karl Garner Desha Southeast Chuck Capps Eddie Palsa Faulkner River Valley Rebecca Thomas Jill Evans Greene Northeast Allen Davis & Dave Freeze Derek Boling Lafayette Southwest Amanda Greer Clarence Brent Lawrence/Randolph Northeast Herb Ginn & Mike Andrews Craig Williams Lee Central Stan Baker Aaron Traylor Lincoln Southeast Steven Stone John Freeman Logan River Valley Bob Harper Kenny Schluterman Lonoke Central Keith Perkins & Jenny Ross Scott Mitchell Mississippi Northeast Jason Osborn Ron Holthouse Monroe Central Van Banks Chris Hodge Phillips Southeast Robert Goodson & Shawn Payne David Gregory Poinsett Northeast Craig Allen & Justin Chlapecka James Wray Prairie Central Brent Griffin & Amy Carroll Greenwalt Company White Central Brett Gordon Keith Feather Woodruff Central Richard Klerk Perry Galloway Yell River Valley Bob Powell Chris Mans Special thanks to the Industry Representatives that supplied seed: Company AgriGold s Armor DeKalb Delta Grow Crop Production Services (Dyna-Gro) Terral Seed Inc. Representative Chad Coleman Jeff Pangle Chet Chaney Lee Hughes Stacey Bruff Paul Sumner

5 INTRODUCTION The 06 growing season was the ninth year for the Corn Standardized County Trial Program. The program s goal is to increase knowledge on selected hybrids that are being evaluated in the University of Arkansas Corn testing program ( The trials were a collaborative effort between growers, County Extension agents, Extension specialists, and industry representatives. In the trials, producers followed their normal production practices they use on their farms. The cooperation of all producers mentioned in this publication is appreciated. Producers donate time, equipment and hired labor to make these trials possible. Trials were separated into five districts and within each district hybrids entered were consistent. Districts included the Northeast, Central, Southeast, River Valley and Southwest, representing the major corn producing areas of Arkansas. A map on page 4 shows the counties in each district. Industry representatives and Extension specialists choose hybrids to be entered, and hybrids were required to be commercially available and have been tested/or being tested in the University of Arkansas Corn testing program. All hybrid trials were irrigated with the exception of Logan County in the River Valley and all hybrids were glyphosate tolerant. Relative maturity of hybrids entered ranged from to 8 days. A full list of hybrids entered along with relative maturity and traits can be found on page. Trials were strip trials and were not replicated, but multiple locations within a district do provide useful information on yield potential and agronomic considerations. Information collected in each trial included; soil type, planting date, agronomic production practices utilized by each producer, final plant population, test weight, grain moisture at harvest, plant lodging and yield. Plots were planted with producer equipment and typically were eight rows wide by the length of field ( ft). Grain moisture and test weights were recorded by commercial or hand held grain analysis equipment. Grain yields were adjusted to 5.5% moisture. When lodging occurred visual ratings were taken by County Extension agents, Extension specialists and/or producers. in 06 was greater than in previous years and in some trials greatly impacted yields. In 06, trials were harvested and results reported. Planting dates ranged from March to April 6 with an average planting date of April 4. Planting rates ranged from 8,000 to 40,000 seeds per acre with an average of 4,000. dates ranged from August 9 to September with an average harvest date of September 7. The authors would like to express their gratitude to the producers, County Agents, and industry representatives that made these trials possible. An electronic copy of this publication can be found at the following web addresses: Cooperative Extension Service Corn Webpage - Cooperative Extension Service Corn & Grain Sorghum Verification Webpage -

6 Arkansas Corn Standardized County Trials District Map Dre Southwest River Valley Central Southeast Northeast 4

7 River Valley and Southwest Districts Summary The River Valley District had four trials and the Southwest had one trial. The following table is a yield summary of the hybrids across these districts bushels per acre Conway Faulkner Lafayette Logan* Yell Average Armor 500 PRO Armor 77 PRO DeKalb 67-4GENVTP DeKalb 67-7GENVTP Dyna-Gro D57VP Dyna-Gro D58VC Terral REV BHR Terral REV 5BHR County Average Note: *Trial was non irrigated. Conway County Faulkner County Lafayette County 4 Logan County 5 Yell County 5

8 Conway County Grower: Brothers Farms County Agent: Kevin VanPelt Location of Field: South of Plummerville GPS: N W Soil Type: Roxana Silt Loam Previous Crop: Soybeans Row Width: 0 inches Planting Population:,000 Planting Date: April 8, 06 Date: September, 06 Irrigation Type and Frequency: Pivot irrigated times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO %, Armor 77 PRO %, DeKalb 67-4GENVTP 8..6% 4, DeKalb 67-7GENVTP 08..7%, Dyna-Gro D57VP5 0..%, Dyna-Gro D58VC %, Terral REV BHR %, Terral REV 5BHR %, County Average 9..7%, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 6

9 Faulkner County Grower: Jill Evans County Agent: Rebecca Thomas Location of Field: Lollie Bottoms GPS: N W 9.96 Soil Type: Moreland Silty Clay Previous Crop: Soybeans Row Width: 0 inches Planting Population: 8,000 Planting Date: March 9, 06 Date: August, 06 Irrigation Type and Frequency: Pivot irrigated times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO % 9, Armor 77 PRO 7. 6.%, DeKalb 67-4GENVTP %, DeKalb 67-7GENVTP % 7, Dyna-Gro D57VP %, Dyna-Gro D58VC %, Terral REV BHR55* Terral REV 5BHR % 8, County Average %, * not reported due to harvest error. Note: Final plant populations were low due to cool wet weather after planting. Yield is adjusted to 5.5% moisture. Plant Stand is given as plants per acre. Score is no lodging, 0 is completely lodged. 7

10 Lafayette County Grower: Clarence Brent County Agent: Amanda Greer Location of Field: Spirit Lake GPS: N 8.09 W Soil Type: Rilla Silt Loam Previous Crop: Corn Row Width: 0 inches Planting Population: 4,000 Planting Date: April 8, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO 0.7.5% 0, Armor 77 PRO % 4, DeKalb 67-4GENVTP.8.6%, DeKalb 67-7GENVTP.9 4.0%, Dyna-Gro D57VP5.0.8%, Dyna-Gro D58VC %, Terral REV BHR % 5, Terral REV 5BHR %, County Average %, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 8

11 Logan County Grower: Mike & Kenny Schluterman County Agent: Bob Harper Location of Field: Paris GPS: N 5.4 W Soil Type: Roxana Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population: 8,000 Planting Date: April 4, 06 Date: September 4, 06 Irrigation Type and Frequency: Non irrigated --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO % 6, Armor 77 PRO % 7, DeKalb 67-4GENVTP* , DeKalb 67-7GENVTP* , Dyna-Gro D57VP5 8..7% 6, Dyna-Gro D58VC % 7, Terral REV BHR % 7, Terral REV 5BHR % 7, County Average 6..7% 7, * s not reported due to harvesting error. Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 9

12 Yell County Grower: Chris Mans County Agent: Bob Powell Location of Field: Cotton Town GPS: N W Soil Type: Dardanelle Silt Loam Previous Crop: Soybeans Row Width: 0 inches Planting Population:,000 Planting Date: March 9, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 5 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO % 0, Armor 77 PRO %, DeKalb 67-4GENVTP 4.8.%, DeKalb 67-7GENVTP 0..%, Dyna-Gro D57VP %, Dyna-Gro D58VC % 0, Terral REV BHR %, Terral REV 5BHR6.7.8% 4, County Average %, Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 0

13 Central District Summary The Central District had six trials. The following table is a yield summary of the hybrids across this district bushels per acre Lee Lonoke Monroe Prairie White Woodruff Average Armor 500 PRO Armor 77 PRO DeKalb 67-4GENVTP DeKalb 67-7GENVTP Delta Grow Delta Grow Dyna-Gro D57VP Dyna-Gro D58VC Terral REV BHR Terral REV 5BHR County Average Lee County Lonoke County Monroe County 4 Prairie County 5 White County 6 Woodruff County

14 Lee County Grower: Aaron Traylor County Agent: Stan Baker Location of Field: Moro GPS: N W Soil Type: Henry Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population:,000 Planting Date: March, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 8 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO %, Armor 77 PRO %, DeKalb 67-4GENVTP.6 6.% 6, DeKalb 67-7GENVTP % 5, Delta Grow % 5, Delta Grow % 5, Dyna-Gro D57VP %, Dyna-Gro D58VC % 6, Terral REV BHR % 5, Terral REV 5BHR %, County Average % 4, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

15 Lonoke County Grower: Scott Mitchell County Agent: Keith Perkins & Jenny Ross Location of Field: Lonoke GPS: N W Soil Type: Stuttgart Silt Loam Previous Crop: Soybeans Row Width: 0 inches Planting Population: 5,000 Planting Date: March 4, 06 Date: September 8, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO % 9, Armor 77 PRO %, DeKalb 67-4GENVTP % 4, DeKalb 67-7GENVTP % 4, Delta Grow % 4, Delta Grow %, Dyna-Gro D57VP % 4, Dyna-Gro D58VC %, Terral REV BHR %, Terral REV 5BHR6. 5.4%, County Average %, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

16 Monroe County Grower: Chris Hodge County Agent: Van Banks Location of Field: Brinkley GPS: N W 9.6 Soil Type: Dubbs Silt Loam Previous Crops: Soybeans Row Width: 0 inches Planting Population: 0,000 Planting Date: March, 06 Date: September 6, 06 Irrigation Type and Frequency: Furrow irrigated 8 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO %, Armor 77 PRO %, DeKalb 67-4GENVTP 7..8% 7, DeKalb 67-7GENVTP %, Delta Grow %, Delta Grow % 0, Dyna-Gro D57VP %, Dyna-Gro D58VC %, Terral REV BHR %, Terral REV 5BHR %, County Average %, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 4

17 Prairie County Grower: Greenwalt Company County Agent: Brent Griffin & Amy Carroll Location of Field: Hazen GPS: N W Soil Type: Immanuel Silt Loam Previous Crops: Soybeans Row Width: 0 inches Planting Population: 4,000 Planting Date: March 9, 06 Date: September 7, 06 Irrigation Type and Frequency: Furrow irrigated 5 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO 9.8.7%, Armor 77 PRO %, DeKalb 67-4GENVTP 8.7.9% 5, DeKalb 67-7GENVTP 5.5.4% 7, Delta Grow % 4, Delta Grow % 4, Dyna-Gro D57VP % 8, Dyna-Gro D58VC7* Terral REV BHR % 5, Terral REV 5BHR6..4% 0, County Average 0..8% 6, * not reported due to planting error. Plant Populations were low due to cool wet weather and bird damage after planting. Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 5

18 White County Grower: Keith Feather County Agent: Brett Gordon Location of Field: Griffithville GPS: N W Soil Type: Calhoun Silt Loam Previous Crop: Soybeans Row Width: 0 inches Planting Population: 6,000 Planting Date: April 7, 06 Date: August 9, 06 Irrigation Type and Frequency: Furrow irrigated 7 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO % 4, Armor 77 PRO.7 8.9% 4, DeKalb 67-4GENVTP.8 8.% 6, DeKalb 67-7GENVTP 4. 8.% 6, Delta Grow % 4, Delta Grow % 4, Dyna-Gro D57VP % 6, Dyna-Gro D58VC % 6, Terral REV BHR % 5, Terral REV 5BHR % 6, County Average.5 8.% 5, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 6

19 Woodruff County Grower: Perry Galloway County Agent: Richard Klerk Location of Field: Gregory GPS: N W Soil Type: Wiville Fine Sandy Loam Previous Crop: Soybeans Row Width: 8 inch twin Planting Population: 4,500 Planting Date: April 8, 06 Date: September 6, 06 Irrigation Type and Frequency: Pivot irrigated times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score Armor 500 PRO 6.6.5% 5, Armor 77 PRO 5..6%, DeKalb 67-4GENVTP % 4, DeKalb 67-7GENVTP 5.0.8%, Delta Grow % 4, Delta Grow %, Dyna-Gro D57VP % 4, Dyna-Gro D58VC % 6, Terral REV BHR % 5, Terral REV 5BHR6 4..8% 4, County Average 45..8% 4, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 7

20 Northeast District Summary The Northeast District had seven trials. The following table is a yield summary of the hybrids across this district bushels per acre Craighead Crittenden Cross Greene Lawrence/ Randolph Mississippi Poinsett Average AgriGold 6659VTRIB AgriGold 67VTPRO Armor 500 PRO Armor 77 PRO DeKalb 67-4GENVTP DeKalb 67-7GENVTP Dyna-Gro D57VP Dyna-Gro D58VC Terral REV BHR Terral REV 5BHR County Average Craighead County Crittenden County Cross County 4 Greene County 5 Lawrence/Randolph 6 Mississippi County 7 Poinsett County 8

21 Craighead County Grower: John Johnson County Agent: Branon Thiesse Location of Field: Jonesboro GPS: N W Soil Type: Fountain Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population:,000 Planting Date: April 6, 06 Date: September 5, 06 Irrigation Type and Frequency: Furrow irrigated 0 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB 8.4.7% 8, AgriGold 67VTPRO % 4, Armor 500 PRO 64.4.% 4, Armor 77 PRO 64.4.% 4, DeKalb 67-4GENVTP 6.8.% 4, DeKalb 67-7GENVTP 80..6% 6, Dyna-Gro D57VP %, Dyna-Gro D58VC % 4, Terral REV BHR % 4, Terral REV 5BHR % 5, County Average 7.9.5% 5, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 9

22 Crittenden County Grower: Phil Pirani County Agent: Russ Parker Location of Field: James Mill GPS: N W Soil Type: Dundee Silt Loam Previous Crop: Corn Row Width: 8 inch twin Planting Population: 4,500 Planting Date: April 0, 06 Date: September 0, 06 Irrigation Type and Frequency: Furrow irrigated 5 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB 5. 5.% 4, AgriGold 67VTPRO 4. 5.%, Armor 500 PRO.5 4.5%, Armor 77 PRO % 8, DeKalb 67-4GENVTP % 7, DeKalb 67-7GENVTP % 9, Dyna-Gro D57VP % 4, Dyna-Gro D58VC % 7, Terral REV BHR % 9, Terral REV 5BHR % 40, County Average % 7, Yield is adjusted to 5.5% moisture. Plant Stand is given as plants per acre. Score is no lodging, 0 is completely lodged. 0

23 Cross County Grower: Karl Garner County Agent: Rick Wimberley Location of Field: Wynne GPS: N 5 4. W Soil Type: Henry Silt Loam Previous Crop: Soybeans Row Width: 8 inch twin Planting Population: 6,000 Planting Date: April 6, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 8 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB % 6, AgriGold 67VTPRO % 5, Armor 500 PRO % 5, Armor 77 PRO % 6, DeKalb 67-4GENVTP % 5, DeKalb 67-7GENVTP* , Dyna-Gro D57VP % 5, Dyna-Gro D58VC % 6, Terral REV BHR % 5, Terral REV 5BHR6* , County Average % 5, *Yields not reported due to harvest errors. Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

24 Greene County Grower: Derek Boling County Agent: Dave Freeze & Allen Davis Location of Field: Paragould GPS: N W Soil Type: Calhoun Silt Loam Previous Crop: Rice Row Width: 0 inches Planting Population: 5,000 Planting Date: April 9, 06 Date: September 6, 06 Irrigation Type and Frequency: Furrow irrigated 5 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB %, AgriGold 67VTPRO % 5, Armor 500 PRO % 4, Armor 77 PRO %, DeKalb 67-4GENVTP % 4, DeKalb 67-7GENVTP %, Dyna-Gro D57VP % 4, Dyna-Gro D58VC % 4, Terral REV BHR %, Terral REV 5BHR % 5, County Average %, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

25 Lawrence/Randolph County Grower: Craig Williams County Agent: Herb Ginn & Mike Andrews Location of Field: Walnut Ridge GPS: N W Soil Type: Sharkey Silty Clay Previous Crop: Soybeans Row Width: 0 inches Planting Population: 4,000 Planting Date: April, 06 Date: September 9, 06 Irrigation Type and Frequency: Furrow irrigated 8 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB 4.0.9% 7, AgriGold 67VTPRO.9.6%, Armor 500 PRO 6.5.5% 4, Armor 77 PRO % 6, DeKalb 67-4GENVTP 48.9.% 7, DeKalb 67-7GENVTP 86..7% 7, Dyna-Gro D57VP5.5.5% 8, Dyna-Gro D58VC7 5..5% 8, Terral REV BHR %, Terral REV 5BHR % 6, County Average 06..6% 5, Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

26 Mississippi County Grower: Ron Holthouse County Agent: Jason Osborn Location of Field: Athelstan GPS: N W Soil Type: Dundee Silt Loam Previous Crop: Cotton Row Width: 8 inches Planting Population:,500 Planting Date: March 5, 06 Date: August 0, 06 Irrigation Type and Frequency: Furrow irrigated 9 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB %, AgriGold 67VTPRO % 4, Armor 500 PRO % 8, Armor 77 PRO %, DeKalb 67-4GENVTP 6. 5.%, DeKalb 67-7GENVTP. 6.0%, Dyna-Gro D57VP %, Dyna-Gro D58VC % 4, Terral REV BHR %, Terral REV 5BHR %, County Average.9 5.7%, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 4

27 Poinsett County Grower: James Wray County Agent: Craig Allen & Justin Chlapecka Location of Field: Bay Village GPS: N W Soil Type: Falaya Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population: 8,000 Planting Date: March 5, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB % 7, AgriGold 67VTPRO % 4, Armor 500 PRO % 4, Armor 77 PRO % 7, DeKalb 67-4GENVTP % 6, DeKalb 67-7GENVTP % 8, Dyna-Gro D57VP % 5, Dyna-Gro D58VC % 6, Terral REV BHR % 8, Terral REV 5BHR % 6, County Average % 6, Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 5

28 Southeast District Summary The Southeast District had five trials. The following table is a yield summary of the hybrids across this district bushels per acre Ashley Chicot Desha Lincoln Phillips Average AgriGold 6659VTRIB AgriGold 67VTPRO Armor 500 PRO Armor 77 PRO DeKalb 67-4GENVTP DeKalb 67-7GENVTP Delta Grow Delta Grow Dyna-Gro D57VP Dyna-Gro D58VC Terral REV BHR Terral REV 5BHR County Average Ashley County Chicot County Desha County 4 Lincoln County 5 Phillips County 6

29 Ashley County Grower: Keith Ladd County Agent: Kevin Norton Location of Field: Mist GPS: N 6.8 W Soil Type: Calhoun Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population: 7,000 Planting Date: March 9, 06 Date: August 9, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB %, AgriGold 67VTPRO % 4, Armor 500 PRO %, Armor 77 PRO %, DeKalb 67-4GENVTP. 6.% 5, DeKalb 67-7GENVTP %, Delta Grow %, Delta Grow %, Dyna-Gro D57VP %, Dyna-Gro D58VC % 5, Terral REV BHR % 4, Terral REV 5BHR % 4, County Average %, Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged. 7

30 Chicot County Grower: SMAC Farm County Agent: Gus Wilson Location of Field: Lake Village GPS: N.00 W Soil Type: Sharkey Clay Previous Crop: Soybeans Row Width: 8 inches Planting Population:,000 Planting Date: March, 06 Date: September 7, 06 Irrigation Type and Frequency: Furrow irrigated times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB % 9, AgriGold 67VTPRO 96..%, Armor 500 PRO %, Armor 77 PRO 85..5% 0, DeKalb 67-4GENVTP %, DeKalb 67-7GENVTP %, Delta Grow % 9, Delta Grow % 0, Dyna-Gro D57VP % 9, Dyna-Gro D58VC % 8, Terral REV BHR % 0, Terral REV 5BHR %, County Average 8.8.% 0, Yield is adjusted to 5.5% moisture. Plant Stand is given as plants per acre. Score is no lodging, 0 is completely lodged. 8

31 Desha County Grower: Eddie Palsa County Agent: Chuck Capps Location of Field: Cutoff GPS: N 48.6 W Soil Type: McGehee Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population: 6,000 Planting Date: April 9, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB 9.8.5%, AgriGold 67VTPRO.9.8%, Armor 500 PRO 08..8%, Armor 77 PRO 8.6.%, DeKalb 67-4GENVTP %, DeKalb 67-7GENVTP.6.6% 4, Delta Grow %, Delta Grow %, Dyna-Gro D57VP5.8.9%, Dyna-Gro D58VC %, Terral REV BHR % 4, Terral REV 5BHR %, County Average 0.8.6%, Note: High levels of stalk lodging likely reduced yields of some hybrids. Yield is adjusted to 5.5% moisture. Plant Stand is given as plants per acre. Score is no lodging, 0 is completely lodged. 9

32 Lincoln County Grower: John Freeman County Agent: Steven Stone Location of Field: Avery GPS: N W Soil Type: Perry Clay Previous Crop: Corn Row Width: 0 inches Planting Population: 4,000 Planting Date: March 0, 06 Date: August, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB..% 9, AgriGold 67VTPRO %, Armor 500 PRO %, Armor 77 PRO 5.6.6% 0, DeKalb 67-4GENVTP.8.9% 4, DeKalb 67-7GENVTP %, Delta Grow %, Delta Grow %, Dyna-Gro D57VP % 8, Dyna-Gro D58VC %, Terral REV BHR % 0, Terral REV 5BHR6 9.8.% 9, County Average. 4.0%, Yield is adjusted to 5.5% moisture. Plant Stand is given as plants per acre. Score is no lodging, 0 is completely lodged. 0

33 Phillips County Grower: David Gregory County Agent: Robert Goodson & Shawn Payne Location of Field: Barton GPS: N 4.8 W Soil Type: Memphis Silt Loam Previous Crop: Soybeans Row Width: 8 inches Planting Population: 5,000 Planting Date: April 7, 06 Date: September, 06 Irrigation Type and Frequency: Furrow irrigated 6 times --- Preplant Sidedress Pretassel Total Fertility bu/ac Population Score AgriGold 6659VTRIB % 4, AgriGold 67VTPRO % 4, Armor 500 PRO %, Armor 77 PRO % 4, DeKalb 67-4GENVTP % 5, DeKalb 67-7GENVTP* % 4, Delta Grow %, Delta Grow % 4, Dyna-Gro D57VP % 4, Dyna-Gro D58VC % 5, Terral REV BHR % 6, Terral REV 5BHR6* %, County Average % 4, Note: *Yields not reported due to irrigation problems. Yield is adjusted to 5.5% moisture. Population is given as plants per acre. Score is no lodging, 0 is completely lodged.

34 Appendix A. Corn Relative Maturity and Traits Relative Maturity Trait AgriGold 6659VTRIB 6 Genuity VT Double Pro AgriGold 67VTPRO 8 Genuity VT Double Pro Armor 500 PRO 5 Genuity VT Double Pro Armor 77 PRO 7 Genuity VT Double Pro DeKalb 67-4GENVTP 7 Genuity VT Double Pro DeKalb 67-7GENVTP 7 Genuity VT Double Pro Delta Grow Roundup Ready, Liberty Link, YieldGard Corn Borer, Viptera Delta Grow Roundup Ready, Liberty Link, YieldGard Corn Borer Delta Grow Roundup Ready, Liberty Link, YiledGard Corn Borer, Viptera Dyna-Gro D57VP5 7 Genuity VT Triple Pro Dyna-Gro D58VC7 8 Genuity VT Double Pro Terral REV BHR55 Herculex, Roundup Ready Corn, Liberty Link, YieldGard Corn Borer Terral REV 5BHR6 5 Herculex, Roundup Ready Corn, Liberty Link, YieldGard Corn Borer 06 Arkansas Corn Standardized Trial Participants Armor AgriGold s Armor Seed AgriGold s P.O. Box Akin Rd Fisher, AR 749 St Francisville, IL 6460 DeKalb Delta Grow Monsanto Company Delta Grow Seed 800 N. Lindbergh Blvd. P.O. Box 9 St. Louis, MO 667 England, AR 7046 Dyna-Gro Terral Crop Production Services Terral Seed Inc. 67 N. US Hwy 6 P.O. Box 86 Portageville, MO 687 Lake Providence, LA 754