Agronomy Facts No. 54 November 10, Maryland Corn Hybrid Performance Tests

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1 Department of Plant Sciences and Landscape Architecture 0 Plant Science Building College Park, MD 07 (0) 0-6 Agronomy Facts November 0, Maryland Corn Performance s Agronomy Facts is prepared by: Dr. Robert Kratochvil and Mr. Louis Thorne. Procedures The University offers a fee-based, corn hybrid performance-testing program to seed corn companies. The results from these replicated trials provide agronomic performance information about the corn hybrids tested at five Maryland locations (Table ) considered representative of the state s geography and weather conditions. Table summarizes the agronomic and production information for each test site. s tested during 07 were submitted in two ways. First, participating seed companies (Table ) were solicited for submission of hybrids. These hybrids represented those currently available for purchase to experimental lines still under evaluation. Second, seed was purchased for hybrids chosen to be representative checks. The inclusion of the performance data for check hybrids allows comparisons of newer hybrids with some that are familiar. During 07, hybrids were tested using four maturity group tests: () very early season (6 hybrids; Table ); () early-season (9 hybrids; Table 6); () mid-season (0 hybrids; Table 7); and fullseason (9 hybrids; Table 8). Each company designated the maturity group assignments for hybrids they submitted. Check hybrids were included in each of the four tests. All hybrids with the exception of one had genetic traits for insect protection and/or herbicide tolerance (Tables -8). Each hybrid was assigned to its maturity group where it was replicated three times per location. Planting was done with a modified, four-row John Deere 70 planter equipped with coulters and trashwheels for no-till planting. The modified planter units were manufactured by Clewell Precision Machine, Inc., Milton, PA. Each plot was four rows spaced 0 inches apart. Plot harvest length was feet. Harvest stand and number of lodged plants were counted during the same week of harvest. The center two rows of each plot were harvested with a Massey Ferguson 8-XP research combine (Kincaid Equipment Manufacturing, Haven, KS). Grain yield, harvest moisture and test weight were measured for each plot. These data were collected with a HarvestMaster HM 800 GrainGage system (Juniper Systems, Inc., Logan, UT). Data was recorded using Mirus software (Juniper Systems, Inc.) on a Panasonic Toughpad computer. Results The overall performance across the locations for the hybrids in each maturity group is found in Tables 9-. performance at individual locations can be found in Tables -7. The agronomic characteristics reported are yield in bushels/acre at moisture content, harvest moisture content, per cent lodging, harvest population, and test weight (lb/bu) at moisture content. As seen in Table, growing season precipitation was above the long-term averages at all five locations. Highlighting the 07 trial year was a cooler, wetter May and a much wetter July and August than generally experienced. The cool, wet May caused no planting delay at any of the locations but it did result in slower than normal early season growth. The wet summer months provided adequate

2 moisture for the crop during the growing season and extended the grain fill period resulting in a very good trial year. Averaged over the five locations, yield for the very-early (6), early (9), mid (0), and full season (9) hybrids was 9 bu/acre, 96 bu/acre, 0 bu/acre, and bu/acre, respectively. Compared to 06, these yields were - (very-early and early), +, and +, respectively, than was observed for the early, mid, and full season hybrids for that season. Average yield for the hybrids tested across the five locations was 06 bu/acre or bu/acre less than the record bu/acre in 0. However, 07 was the third time in four years that average yield across the five testing locations exceeded 00 bu/acre. Three locations exceeded average yield of 0 bu/acre (Salisbury.6; Keedysville.; and Clarksville 0.6); but none were better than the bu/acre best location yield attained at the Wye during 06. A least significant difference (LSD) value is reported for each test where statistically significant differences (p 0.0) for a variable were observed among hybrids. The mean separation value has been calculated at the 0 percent probability level (LSD 0.0). The LSD can be used to compare two hybrids within the same test. For example, when the yield difference between two hybrids is greater than or equal to the LSD value, there is a 90 certainty that the difference is real rather than due to random variability. The coefficient of variation (CV) is a measurement of the variability that existed at a test site. It is used as an indicator of the degree of precision for a test. In general, CV values below 0 for yield indicate that the precision for distinguishing yield differences was very good. The selection of a hybrid or hybrids based solely on performance at one location is not recommended. It is better to select a hybrid/s based upon performance over a number of locations and/or years, if possible. In order to compare the performance of each hybrid across the five locations, relative yield tables (Tables -6) are included. yield is the ratio of the yield of a hybrid at a location to the mean yield of all the hybrids at that location expressed in percentage. A hybrid that has a relative yield consistently greater than 00 across all testing locations is considered to have excellent stability. During 07, ten hybrids met this gold standard; Pioneer brand 09 AM (very early); Pioneer brand 060 AM and T.A. Seeds TA8-8RIB (early season); Dekalb brand DKC6-88RIB and Doebler s brands RPM 97AM, RPM 08AM and RPM AM (mid-season); and Dekalb brands DKC 6-RIB, DKC 66-7RIB, and Hubner brand H7RCP (full-season). Eight hybrids (four mid-season and four full season) had relative yield greater than 00 at - locations and are considered to have good stability. Acknowledgments The University of Maryland Corn ing Program would not happen if it weren t for the assistance and oversight with equipment maintenance, seed packaging, planting, data collection, and plot harvest by lead research technician, Louis Thorne. Student assistant, Alyssa Mills, is owed a debt of gratitude for helping with seed packaging and student assistant, Kossi Bossinan, deserves a big thank you for helping with growing season plot maintenance. A special thank you goes to the staff at Wye Research Center for assisting Louis with advice and assistance with combine, planter, truck, and trailer maintenance. Assistance with land preparation, planting, plot management, harvesting, and equipment maintenance/repair (as needed) was provided by research farms personnel (Table ). Finally, I want to thank the research farm managers David Armentrout, John Draper, Ryan McDonald, and David Justice. Additional Information The inclusion of hybrids in these tests is not an endorsement by the University of Maryland. Advertising statements about a company s hybrids can be made as long as they are accurate statements about the data as published. Statements similar to See the Maryland Corn s Agronomy Facts or Endorsement or recommendation by the University of Maryland is not implied must accompany any information that is reproduced.

3 Index to Tables Page Table. Production management information Table. Participating companies Table. Precipitation received at each location Table. Glossary of genetic trait abbreviations 6 Table. Maturity, genetics, and seed treatments for very-early season hybrids 7 Table 6. Maturity, genetics, and seed treatments for early-season hybrids 7 Table 7. Maturity, genetics, and seed treatments for mid-season hybrids 8 Table 8. Maturity, genetics, and seed treatments for full-season hybrids 9 Table 9. Average performance for very-early season hybrids at five locations 0 Table 0. Average performance for early-season hybrids at five locations 0 Table. Average performance for mid-season hybrids at five locations Table. Average performance for full-season hybrids at five locations Table. Very-early season hybrids at Wye Research and Education Center Table. Early-season hybrids at Wye Research and Education Center Table. Mid-season hybrids at Wye Research and Education Center Table 6. Full-season hybrids at Wye Research and Education Center Table 7. Very-early season hybrids at LESREC-Poplar Hill 6 Table 8. Early-season hybrids at LESREC-Poplar Hill 6 Table 9. Mid-season hybrids at LESREC-Poplar Hill 7 Table 0. Full-season hybrids at LESREC-Poplar Hill 8 Table. Very-early season hybrids at LESREC-Salisbury 9 Table. Early-season hybrids at LESREC-Salisbury 9 Table. Mid-season hybrids at LESREC-Salisbury 0 Table. Full-season hybrids at LESREC-Salisbury Table. Very-early season hybrids at Western Maryland R&E Center Table 6. Early-season hybrids at Western Maryland R&E Center Table 7. Mid-season hybrids at Western Maryland R&E Center Table 8. Full-season hybrids at Western Maryland R&E Center Table 9. Very-early season hybrids at CMREC-Clarksville Table 0. Early-season hybrids at CMREC-Clarksville Table. Mid-season hybrids at CMREC-Clarksville 6 Table. Full-season hybrids at CMREC-Clarksville 7 Table. yield summary for very-early season hybrids 8 Table. yield summary for early-season hybrids 8 Table. yield summary for mid-season hybrids 9 Table 6. yield summary for full-season hybrids 0

4 Table. Production management practices used and other pertinent information for the locations of the 07 Maryland Corn. Location Wye R & E Center Queenstown, MD Lower Eastern Shore R&E Center-Poplar Hill Quantico, MD Lower Eastern Shore R&E Center-Salisbury Salisbury, MD Central Maryland R&E Center - Clarksville Clarksville, MD Western Maryland R&E Center Keedysville, MD Soil Type & Previous Crop Mattapeake silt loam Soybean Mattapex silt loam Nassowango silt loam Soybean followed by wheat cover crop Fort Mott loamy sand Soybean followed by wheat cover crop Delanco silt loam Soybean Swanpond silt loam Double Crop Soybean 9 April: 0 May: Total: Fertilizer Herbicides & Insecticides Tillage Plant & Harvest Dates Farm Staff lb/a as lb N as April: 8 lb/a s-.mg May: 8.9 lb/a as B-0.0Zn June: 0 lb N/a as 0 UAN Total: 0---S-.Mg-.9B-0.Zn 0 April: 8 lb/a s-.mg May: 8.9 lb/a as B-0.0Zn May: 98 lb N/a as 0 UAN June: 98 lb N/a as 0 UAN Total: 8---S-.Mg-.9B-0.Zn 8 April lb/a --6-S 0 May 0 lb N/a as 0 UAN Total: S April: 60 lb/a s May: 70 lb N/a as 0 UAN Total: S-.0B 7 April Pre-Plant pt/a 0 May Pre-Emerge Lexar qt/a No Insecticide April Pre-Plant Gramoxone qt/a -D pt/a 80 fl oz/a May Pre-Emerge qt/a pt/a No Insecticide April Pre-Plant Gramoxone qt/a -D pt/a 80 fl oz/a May Pre-Emerge qt/a pt/a No Insecticide 0 May Pre-Emerge Bicep II qt/acre Gramoxone pt/acre 80/0 pt/acre May Pre-plant qt/acre pt/acre Gramoxone qt/acre No post-emerge herbicide No insecticide No-till with aid of trash wheels on planter No-till into cover crop with aid of trash wheels on planter No-till into cover crop with aid of trash wheels on planter No-till with aid of trash wheels on planter No-till with aid of trash wheels on planter Plant 8 April Harvest 8 September Very Early; Early s 0 September Mid-Season 9 September Full Season Plant May Harvest 6 September Plant May Harvest September Plant 0 May Harvest 8 October Plant 0 May Harvest 6 October John Draper Joseph Street Thomas Eason David Armentrout Jordan Miller Fred Senkbeil David Armentrout James Lynch Vivian Calder David Long Jordan Miller Mike Dwyer David Justice Michael Gray Ryan McDonald Douglas Price David Wyand

5 Table. Brands and companies represented in the 07 Maryland corn hybrid tests. Brand Address Armor Armor Seed LLC, 8 Pennsylvania Ave., Waldenburg, AR 77 Augusta Augusta Seed, P.O. Box 899, Verona, VA 8 DeKalb Monsanto Company, 800 N. Lindbergh Blvd. St. Louis, MO Dyna-Gro Crop Production Services/Dyna-Gro, 0 Sweet Road, East Aurora, NY 0 Hubner Seed Hubner Seed Company, 080 West State Road 8, West Lebanon, IN NK Syngenta Seeds, 0 Fairmount Pike, Signal Mountain, TN Pioneer Dupont- Pioneer, PO Box 000, Johnston, IA 0 RPM Doebler's PA s, Inc., 000 Commerce Park Dr., Suite 06 Williamsport, PA T.A. Seeds T.A. Seeds., 9 Seeds Lane, Jersey Shore, PA Table. Precipitation received at each location where the Maryland corn hybrid tests were conducted during 07. Month Wye Poplar Hill Salisbury Keedysville Clarksville Inches April May June (.0) July (.6) August September Total (6 month) (.6).7.0 Long Term Average The number in parentheses following the precipitation total for each month at Salisbury indicates the amount of supplemental irrigation used. Long term average precipitation is for these respective number of years at Wye (8), Poplar Hill (7), Salisbury (8), Clarksville (8), and Keedysville (8).

6 Table. Glossary of abbreviations for hybrid genetic traits and description of seed treatments used in Tables, 6, 7, and 8. Abbreviation Description AcreMax or AM Refers to a refuge in the bag hybrid. AcreMax Above Refuge in the bag plus above ground insect protection. AcreMax Xtreme Contains above and below ground insect protection, refuge in the bag, plus glyphosate and glufosinate herbicide tolerance. Agrisure 000GT Protection against corn borer and corn rootworm plus glyphosate and glufosinate herbicide tolerance. Avicta 00 or A00 A nematicide seed treatment. Avicta Complete Corn A nematicide/insecticide/fungicide seed treatment combination. BT Contains a Bacillus thuringiensis (Bt) event for protection against European corn borer. Conventional Indicates a hybrid with no biotechnology linked genetic enhancement. Cruiser 0 and 00 A neonicotinoid based insecticide seed treatment. CruiserMaxx 0 A neonicotinoid based insecticide seed treatment plus seed applied Maxim Quatro fungicide. GENSSRIB Refers to hybrids that have eight traits combined or stacked together 6 for insect resistance (Bt) and for herbicide (Roundup and Liberty) tolerance. Includes non-bt seed blended in the bag creating refuge in the bag. GENVTPRIB Provides protection against aboveground Lepidopteran insects, has tolerance to glyphosate, and has non-bt seed blended in the bag creating refuge in the bag. GENVTPRIB, VTP RIB A triple stack package that protects against European and Southwest corn borer, corn earworm, fall armyworm, and corn rootworm, is glyphosate tolerant, and has non-bt seed blended in the bag creating refuge in the bag. GT Refers to glyphosate (Roundup) herbicide tolerance. GT 000 Agrisure triple stack hybrid for corn borer and corn rootworm protection plus tolerance of in-season applications of glyphosate and glufosinate. 0GT All indicate tolerance to both glufosinate-ammonium (Ignite) and glyphosate (Roundup) herbicides in addition to having protection from Western, Northern, Southern and Mexican rootworm and European and Southwestern corn borer. HX Contains a Bacillus thuringiensis (Bt) event for protection against European corn borer. LL Refers to glufosinate (Liberty) herbicide tolerance. Poncho 0, 00 or 0 An insecticide seed treatment with the number referring to the concentration of insecticide used. RIB Has non-bt seed blended in the bag creating refuge in the bag RR Has glyphosate herbicide tolerance. RR Designates the second generation event for glyphosate herbicide tolerance. RW Designates protection against corn rootworm. SSX, STX Refers to a SmartStax hybrid. SSXRA Refers to a SmartStax hybrid that has non-bt seed blended in the bag creating refuge in the bag. Votivo 00 and Votivo 0 A nematicide seed treatment. VTP, VTPRO Contains RR gene and Gard corn stalk borer gene VTPRO/DroughtGard Contains RR gene, Gard corn stalk borer gene, and Drought Gard gene. VTPDG RIB Contains RR gene, Gard corn stalk borer gene, Drought Gard gene, and non-bt seed blended in the bag for refuge in the bag. VTPRO Contains RR gene plus above and below ground insect protection. VTP RIB A triple stack package that protects against European and Southwest corn borer, corn earworm, fall armyworm, and corn rootworm, is glyphosate tolerant, and has non-bt seed blended in the bag creating refuge in the bag. 6

7 Table. maturity, genetic traits, and seed treatments for very early season hybrids tested in Maryland during 07. Brand/Company Genetic Traits Seed Treatment Maturity Armor 00 PRO 0 PRO RR A00/Votivo Augusta A70 00 GT000 Cruiser 0 Doebler's RPM AMXT 0 BT/CB/LL/RR/RW ACREMAX XTREME Cruiser 0 Doebler's RPM 7AMXT 0 BT/CB/LL/RR/RW ACREMAX XTREME Cruiser 0 Hubner H67RCSS 0 SSTXRIB Accelleron/Poncho/Votivo 00 Pioneer P09AM 0 YGCB, HX, RR, LL Refer to Table to see the descriptions of the trait codes. s in bold print are check hybrids that were included with funding from the Maryland Grain Producers Utilization Board. Table 6. maturity, genetic traits, and seed treatments for early-season hybrids tested in Maryland during 07. Brand/Company Genetic Traits Seed Treatment Maturity Augusta A6 06 SmartStax Cruiser 0 Dekalb DKC-RIB 0 GENVTPRIB A00/Votivo Dekalb DKC6-0RIB 06 GENSSRIB A00/Votivo Dekalb DKC7-99RIB 07 GENDGVTPRIB A00/Votivo Dekalb DKC8-08RIB 08 GENVTPRIB A00/Votivo Doebler's RPM 77AMX 07 BT/CB/LL/RR/RW ACREMAX XTRA Cruiser 0 Hubner H69RCSS 08 SSTXRIB Accelleron/Poncho/Votivo 00 T.A. Seeds TA7-DPRIB 06 VTPRIB A00 T.A. Seeds TA8-8RIB 08 SSXRIB A00 Pioneer P060AM 06 YGCB, HX, RR, LL Refer to Table to see the descriptions of the trait codes. s in bold print are check hybrids that were included with funding from the Maryland Grain Producers Utilization Board. 7

8 Table 7. maturity, genetic traits, and seed treatments for mid-season hybrids tested in Maryland during 07. Brand/ Company Maturity Genetic Traits Seed Treatment Armor 0909 PRO 09 PRO RR A00/Votivo Armor AXG PRO RR A00/Votivo Armor AXG70 0 PRO RR A00/Votivo Augusta A06 0GT Cruiser 0 Augusta A6 000GT Cruiser 0 Augusta A9 09 GTCBLL Cruiser 0 Augusta A09 09 GT Cruiser 0 Dekalb DKC60-69RIB 0 GENDGVTPRIB A00/Votivo Dekalb DKC6-88RIB GENVTPRIB A00/Votivo Dekalb DKC6-08RIB GENSSRIB A00/Votivo Dekalb DKC6-0RIB GENVTPRIB A00/Votivo Doebler's RPM 97AM 09 BT/CB/LL/RR ACREMAX ABOVE Cruiser 0 Doebler's RPM 08AM 0 BT/CB/LL/RR ACREMAX ABOVE Poncho 0/Votivo Doebler's RPM AM BT/CB/LL/RR ACREMAX ABOVE Poncho 0/Votivo Dyna-Gro D0VC0 0 VT PRO Poncho00/Votivo Dyna-Gro DVC9 VT PRO Poncho00/Votivo Dyna-Gro CX7 VT PRO Poncho00/Votivo Hubner HG6 VTPDGRIB Accelleron/Poncho/Votivo 00 Syngenta N66V-0 0 Bt,RR Avicta Complete Pioneer P97AM YGCB, HX, RR, LL Refer to Table to see the descriptions of the trait codes. s in bold print are check hybrids that were included with funding from the Maryland Grain Producers Utilization Board. 8

9 Table 8. maturity, genetic traits, and seed treatments for full-season hybrids tested in Maryland during 07. Brand/ Company Maturity Genetic Traits Seed Treatment Augusta A6 GTCBLL Cruiser 0 Augusta A06 Conventional Cruiser 0 Dekalb DKC6-RIB GENVTPRIB A00/Votivo Dekalb DKC6-89RIB GENVTPRIB A00/Votivo Dekalb DKC6-0RIB GENDGVTPRIB A00/Votivo Dekalb DKC6-9 GENSS A0/Votivo Dekalb DKC66-7RIB 6 GENVTPRIB A00/Votivo Dekalb DKC67-7 GENVTP A00/Votivo Doebler's RPM 8AM BT/CB/LL/RR ACREMAX ABOVE Poncho 0/Votivo Doebler's RPM 88AM 8 BT/CB/LL/RR ACREMAX ABOVE Poncho 0/Votivo Dyna-Gro DVC VT PRO Poncho00/Votivo Hubner H7RCP VTPRIB Accelleron/Poncho/Votivo 00 Hubner H666RCSS SSTXRIB Accelleron/Poncho/Votivo 00 Hubner H7RCP VTPRIB Accelleron/Poncho/Votivo 00 Syngenta N76A-000GT Bt, RR Avicta Complete Syngenta N8D- 8 Bt, RR Avicta Complete T.A. Seeds TA76-8RIB SSXRIB A00 T.A. Seeds TA78-8RIB SSXRIB A00 Pioneer PAM YGCB, HX, RR, LL Refer to Table to see the descriptions of the trait codes. s in bold print are check hybrids that were included with funding from the Maryland Grain Producers Utilization Board. 9

10 Table 9. Performance of very early maturity hybrids evaluated at five Maryland locations during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT Doebler's RPM 7AMXT 98.* Hubner H67RCSS Pioneer P09AM 0.8* Mean Probability > F <0.000 LSD NS 0.6 CV See Table for trait designations for very early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are checks. *s with an asterisk next to yield are not significantly different (p=0.0) compared to the top-yielding hybrid. Table 0. Performance of early maturity hybrids evaluated at five Maryland locations during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS 00.8* T.A. Seeds TA7-DPRIB T.A. Seeds TA8-8RIB 00.* Pioneer P060AM 09.7* Mean Probability > F LSD NS NS NS CV See Table 6 for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are checks. *s with an asterisk next to yield are not significantly different (p=0.0) compared to the top-yielding hybrid. 0

11 Table. Performance of mid-season maturity hybrids evaluated at five Maryland locations during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) Armor Armor AXG Armor AXG Augusta Augusta Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB.* Dekalb DKC6-08RIB.6* Dekalb DKC6-0RIB.* Doebler's RPM 97AM 9.6* Doebler's RPM 08AM 8.6* Doebler's RPM AM.7* Dyna-Gro D0VC0.* Dyna-Gro DVC9.* Dyna-Gro CX Hubner HG6.6* Syngenta N66V-0.* Pioneer P97AM 8.7* Trial Mean Probability > F <0.000 < LSD NS NS CV See Table 7 for hybrid trait designations for mid-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are checks. *s with an asterisk next to yield are not significantly different (p=0.0) compared to the top-yielding hybrid.

12 Table. Performance of full season hybrids evaluated at five Maryland locations during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB.7* Dekalb DKC6-89RIB Dekalb DKC6-0RIB.* Dekalb DKC6-9.9* Dekalb DKC66-7RIB.9* Dekalb DKC67-.0* Doebler's RPM 8AM 8.* Doebler's RPM 88AM 7.* Dyna-Gro DVC Hubner H7RCP 9.* Hubner H666RCSS.* Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Trial Mean Probability > F LSD CV See Table 8 for trait designations for full season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (p=0.0) compared to the top-yielding hybrid.

13 Table. Performance of very early maturity hybrids evaluated at Wye Research and Education Center, Queenstown, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT Doebler's RPM 7AMXT Hubner H67RCSS Pioneer P09AM Mean Probability > F LSD 0.0 NS NS NS. NS CV See Table for trait designations for very early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. /s (bold) are included as checks. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the top-yielding Table. Performance of early maturity hybrids evaluated at Wye Research and Education Center, Queenstown, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS T.A. Seeds TA7-DPRIB T.A. Seeds TA8-8RIB Pioneer P060AM Mean Probability > F LSD 0.0 NS NS NS NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s (bold) are included as checks. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the top-yielding

14 Table. Performance of mid-season maturity hybrids evaluated at Wye R&E Center, Queenstown, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Armor AXG Armor AXG Augusta Augusta 6.* Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB 0.6* Dekalb DKC6-08RIB Dekalb DKC6-0RIB 08.* Doebler's RPM 97AM.9* Doebler's RPM 08AM 08.9* Doebler's RPM AM.* Dyna-Gro D0VC0 07.8* Dyna-Gro DVC9 07.* Dyna-Gro CX7 0.* Hubner HG6 09.* Syngenta N66V-0 08.* Pioneer P97AM Trial Mean Probability > F 0.0 < LSD NS.7 NS CV See Table 6 for hybrid trait designations for mid-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are checks. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding

15 Table 6. Performance of full season hybrids evaluated at Wye Research and Education Center, Queenstown, MD during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB Dekalb DKC6-89RIB Dekalb DKC6-0RIB Dekalb DKC Dekalb DKC66-7RIB Dekalb DKC Doebler's RPM 8AM Doebler's RPM 88AM Dyna-Gro DVC Hubner H7RCP Hubner H666RCSS Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Trial Mean Probability > F LSD 0.0 NS NS CV See Table 7 for trait designations for full season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding

16 Table 7. Performance of very early season hybrids at Lower Eastern Shore R&E Center- Poplar Hill Facility, Quantico, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT Doebler's RPM 7AMXT Hubner H67RCSS Pioneer P09AM Trial Mean Probability > F LSD 0.0 NS NS NS NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding Table 8. Performance of early season hybrids at Lower Eastern Shore R&E Center- Poplar Hill Facility, Quantico, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS T.A. Seeds TA7-DPRIB T.A. Seeds TA8-8RIB Pioneer P060AM Trial Mean Probability > F LSD 0.0 NS NS NS NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids included with funding from the Maryland Grain Producers Utilization Board. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding 6

17 Table 9. Performance of mid-season hybrids evaluated at Lower Eastern Shore R&E Center- Poplar Hill Facility, Quantico, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Armor AXG709 9.* Armor AXG70 96.* Augusta 06 0.* Augusta Augusta * Augusta * Dekalb DKC60-69RIB 0.* Dekalb DKC6-88RIB 08.9* Dekalb DKC6-08RIB Dekalb DKC6-0RIB 0.8* Doebler's RPM 97AM.* Doebler's RPM 08AM 0.8* Doebler's RPM AM 0.* Dyna-Gro D0VC0 99.* Dyna-Gro DVC9 9.* Dyna-Gro CX7 9.9* Hubner HG Syngenta N66V-0 0.* Pioneer P97AM 0.7* Trial Mean Probability > F LSD 0.0. NS NS NS NS CV See Table 6 for trait designations for mid-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding 7

18 Table 0. Performance of full season hybrids evaluated at Lower Eastern Shore R&E Center- Poplar Hill Facility, Quantico, MD during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB Dekalb DKC6-89RIB Dekalb DKC6-0RIB Dekalb DKC Dekalb DKC66-7RIB Dekalb DKC Doebler's RPM 8AM Doebler's RPM 88AM Dyna-Gro DVC Hubner H7RCP Hubner H666RCSS Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Trial Mean Probability > F LSD 0.0 NS NS NS NS NS CV See Table 7 for trait designations for full season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids included. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding 8

19 Table. Performance of very early-season hybrids evaluated at Lower Eastern Shore Research and Education Center, Salisbury Facility, Salisbury, MD during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT 99.* Doebler's RPM 7AMXT Hubner H67RCSS Pioneer P09AM 0.0* Mean Probability > F LSD NS NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding Table. Performance of early-season hybrids evaluated at Lower Eastern Shore Research and Education Center, Salisbury Facility, Salisbury, MD during 07. Entry Brand/ Company (bu/a) Lodging (lb/bu) 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS T.A. Seeds TA7-DPRIB T.A. Seeds TA8-8RIB Pioneer P060AM Mean Probability > F LSD 0.0 NS NS 0.6 NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids included. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding 9

20 Table. Performance of mid-season hybrids evaluated at Lower Eastern Shore R&E Center, Salisbury Facility, Salisbury, MD during 07. Entry Brand/Company (bu/a) Lodging plants/a) (lb/bu) Armor Armor AXG Armor AXG Augusta Augusta Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB Dekalb DKC6-08RIB Dekalb DKC6-0RIB Doebler's RPM 97AM Doebler's RPM 08AM Doebler's RPM AM Dyna-Gro D0VC Dyna-Gro DVC Dyna-Gro CX Hubner HG Syngenta N66V Pioneer P97AM Trial Mean Probability > F LSD 0.0 NS. NS NS NS CV See Table 6 for trait designations for mid-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids included. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding 0

21 Table. Performance of full season hybrids evaluated at Lower Eastern Shore R&E Center, Salisbury Facility, Salisbury, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB Dekalb DKC6-89RIB Dekalb DKC6-0RIB Dekalb DKC Dekalb DKC66-7RIB Dekalb DKC Doebler's RPM 8AM Doebler's RPM 88AM Dyna-Gro DVC Hubner H7RCP Hubner H666RCSS Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Trial Mean Probability > F LSD 0.0 NS NS NS NS NS CV See Table 7 for trait designations for full season hybrids. s are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk next to yield are not significantly different (Probability > F 0.0) compared to the topyielding

22 Table. Performance of very early season hybrids evaluated at Western Maryland Research and Education Center, Keedysville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT.8* Doebler's RPM 7AMXT 0.6* Hubner H67RCSS Pioneer P09AM.0* Mean Probability > F LSD NS 0.7 NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding Table 6. Performance of early season hybrids evaluated at Western Maryland Research and Education Center, Keedysville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) 8 Augusta 6 0.* Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB.8* Doebler's RPM 77AMX 09.* Hubner H69RCSS T.A. Seeds TA7-DPRIB 09.* T.A. Seeds TA8-8RIB.* Pioneer P060AM.0* Mean Probability > F 0.0 < < LSD NS 0.68 NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding

23 Table 7. Performance of mid-season hybrids evaluated at Western Maryland Research and Education Center, Keedysville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Armor AXG Armor AXG Augusta Augusta Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB Dekalb DKC6-08RIB Dekalb DKC6-0RIB Doebler's RPM 97AM Doebler's RPM 08AM Doebler's RPM AM Dyna-Gro D0VC Dyna-Gro DVC Dyna-Gro CX Hubner HG Syngenta N66V Pioneer P97AM Mean Probability > F 0. < < LSD 0.0 NS.6 NS. NS CV See Table 6 for trait designations for mid-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding

24 Table 8. Performance of full season hybrids evaluated at Western Maryland Research and Education Center, Keedysville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB.7* Dekalb DKC6-89RIB Dekalb DKC6-0RIB.9* Dekalb DKC Dekalb DKC66-7RIB.9* Dekalb DKC67-9.9* Doebler's RPM 8AM.9* Doebler's RPM 88AM Dyna-Gro DVC.* Hubner H7RCP.* Hubner H666RCSS 8.8* Hubner H7RCP.7* Syngenta N76A-000GT Syngenta N8D-.0* T.A. Seeds TA76-8RIB.8* T.A. Seeds TA78-8RIB Pioneer PAM Mean Probability > F 0.0 < < LSD NS CV See Table 7 for trait designations for full season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding

25 Table 9. Performance of very early hybrids evaluated at Central Maryland Research and Education Center, Clarksville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Augusta Doebler's RPM AMXT Doebler's RPM 7AMXT Hubner H67RCSS Pioneer P09AM Mean Probability > F LSD 0.0 NS NS NS. NS CV See Table for hybrid type code designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding Table 0. Performance of early season hybrids evaluated at Central Maryland Research and Education Center, Clarksville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB 0.8* Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS.0* T.A. Seeds TA7-DPRIB 0.* T.A. Seeds TA8-8RIB 06.8* Pioneer P060AM 8.6* Mean Probability > F LSD NS NS NS NS CV See Table for trait designations for early-season hybrids. s and test weights are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding

26 Table. Performance of mid-season hybrids evaluated at Central Maryland Research and Education Center, Clarksville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Armor Armor AXG Armor AXG70 7.* Augusta 06 7.* Augusta Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB 6.9* Dekalb DKC6-08RIB.* Dekalb DKC6-0RIB 0.* Doebler's RPM 97AM.6* Doebler's RPM 08AM.9* Doebler's RPM AM 7.* Dyna-Gro D0VC Dyna-Gro DVC9.* Dyna-Gro CX Hubner HG6.* Syngenta N66V Pioneer P97AM 6.6* Mean Probability > F LSD NS NS NS NS CV See Table 6 for trait designations for mid-season hybrids. and test weight are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (Probability > F 0.0) for yield compared to the top-yielding 6

27 Table. Performance of full season hybrids evaluated at Central Maryland Research and Education Center- Clarksville Facility, Clarksville, MD during 07. Entry Brand/Company (bu/a) Lodging (lb/bu) Augusta Augusta Dekalb DKC6-RIB Dekalb DKC6-89RIB Dekalb DKC6-0RIB Dekalb DKC Dekalb DKC66-7RIB Dekalb DKC Doebler's RPM 8AM Doebler's RPM 88AM Dyna-Gro DVC Hubner H7RCP Hubner H666RCSS Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Mean Probability > F LSD 0.0 NS NS.0 NS NS CV See Table 7 for hybrid type code designations for full season hybrids. s are reported at moisture content. Lodging is recorded as the percentage of plants broken below the ear and/or leaning or greater. s in bold are check hybrids. *s with an asterisk are not significantly different (p=0.0) for yield compared to the top-yielding hybrid at this location. 7

28 Table. yield scores for very early season hybrids evaluated in Maryland during 07. s with scores 00 or greater at four or more locations are considered to have good stability. Entry Brand/ Company Avg. Wye Poplar Salisbury Clarksville Keedysville Sites Hill Armor Augusta Doebler's RPM AMXT Doebler's RPM 7AMXT Hubner H67RCSS Pioneer P09AM Trial Mean (bu/acre) Bold hybrids are checks. s highlighted in light gray have relative yield ratings of 00 or greater at all sites tested. s highlighted in dark gray have relative yield ratings of 00 or greater at testing sites. Table. yield scores for early season hybrids evaluated in Maryland during 07. s with scores 00 or greater at four or more locations are considered to have good stability. Entry Brand/ Company Avg. Wye Poplar Salisbury Clarksville Keedysville Sites Hill 8 Augusta Dekalb DKC-RIB Dekalb DKC7-99RIB Dekalb DKC8-08RIB Doebler's RPM 77AMX Hubner H69RCSS T.A. Seeds TA7-DPRIB T.A. Seeds TA8-8RIB Pioneer P060AM Trial Mean (bu/acre) Bold hybrids are checks. s highlighted in light gray have relative yield ratings of 00 or greater at all sites tested. s highlighted in dark gray have relative yield ratings of 00 or greater at testing sites. 8

29 Table. yield scores for mid-season hybrids evaluated in Maryland during 07. s with scores 00 or greater at four or more locations are considered to have good stability. Brand/Company Entry Avg. sites Wye Poplar Salisbury Clarksville Keedysville Hill Armor Armor AXG Armor AXG Augusta Augusta Augusta Augusta Dekalb DKC60-69RIB Dekalb DKC6-88RIB Dekalb DKC6-08RIB Dekalb DKC6-0RIB Doebler's RPM 97AM Doebler's RPM 08AM Doebler's RPM AM Dyna-Gro D0VC Dyna-Gro DVC Dyna-Gro CX Hubner HG Syngenta N66V Pioneer P97AM Trial Mean (bu/acre) Bold hybrids are checks. s highlighted in light gray have relative yield ratings of 00 or greater at all sites tested. s highlighted in dark gray have relative yield ratings of 00 or greater at testing sites. 9

30 Table 6. yield scores for full-season hybrids evaluated in Maryland during 06. s with scores 00 or greater at four or more locations are considered to have good stability. Brand/ Entry Company Avg. Wye Poplar Salisbury Clarksville Keedysville Sites Hill Augusta Augusta Dekalb DKC6-RIB Dekalb DKC6-89RIB Dekalb DKC6-0RIB Dekalb DKC Dekalb DKC66-7RIB Dekalb DKC Doebler's RPM 8AM Doebler's RPM 88AM Dyna-Gro DVC Hubner H7RCP Hubner H666RCSS Hubner H7RCP Syngenta N76A-000GT Syngenta N8D T.A. Seeds TA76-8RIB T.A. Seeds TA78-8RIB Pioneer PAM Trial Mean (bu/acre) Bold hybrids are checks included with funding from the Maryland Grain Producers Utilization Board. s highlighted in light gray have relative yield ratings of 00 or greater at testing locations. s highlighted in dark gray have relative yield ratings of 00 or greater at testing locations. 0