Corn Testing – Different Versions of the Same Hybrid – How do we Handle This?

1. SCC-33 National Variety Testing Meeting New Orleans – February 8-10, 2012 Rick Mascagni, LSU AgCenter, St. Joseph, LA Daryl Bowman, NC State Corn Testing – Different Versions of the Same Hybrid – How do we Handle This?

2. GenuitySmartstax – Controls ECB, SWCB, SCB, CE, FA, SB, LCSB, WBC, BC, WCR, NCR,MCR/RR2 • Genuity VT Triple PRO (GenVT3) – Controls ECB, SWCB, SCB, SCSB, CE, FA, CSB, WCR, NCR, MCR/RR2 • Genuity VT Double PRO (VT2) – Controls ECB, SWCB, SCB, SCSB, CE, CSB, FA/RR2 • YieldGard VT Triple (VT3)- Controls ECB, SWCB, SCB, WCR, NCR, MCR/RR2 Trans-genes

3. YieldGard Corn Borer – Controls ECB, SWCB, SCB/RR2 • YieldGard Plus – Controls ECB, SWCB, SCB, WCR, NCR, MCR/RR2 • YieldGard VT Rootworm/RR2 – Controls WCR, NCR, MCR/RR2 Trans genes

4. Agrisure®GT – provides tolerance to in-crop applications of glyphosate-based herbicides • Agrisure®GT/CB/LL – provides control against ECBaswella s other insects and is tolerant to glyphosate and glufosinate herbicides • Agrisure®3000GT – protects against ECB, CE, WR, NR, MR; suppresses FA, CSB/tolearnt to glyphosate and glufosinate herbicides • AgrisureViptera™ 3111 – protects against ECB, SWCB, SCB, WBC, BC, FA, CE/ tolerant to glyphosate and glufosinate herbicides • Herculex I (HX1) – SWB, ECB, SCB, WBC, BC,FA/tolearnt to glufosinate herbicide • YHR – pyramid of HX1 and YieldGard corn borer • Note: There are several species of corn rootworm in the Southeast. Southern corn rootworm is the most prevalent species. None of the above “rootworm” products are not effective against southern corn rootworm. Trans-genes

5. Cruiser Extreme 250 • Cruiser (thiamethoxam) @ 0.25 mg ai/seed • Three fungicides: Apron XL®, Maxim® XL, Dynasty® • Cruiser 1250 • Cruiser (thiamethoxam) @ 1.25 mg ai/seed • Three fungicides: Apron XL®, Maxim® XL, Dynasty® Seed Treatments

6. Poncho/Votivo • Insecticide and a new biological mode of action with a unique bacteria strain that lives and grows with young roots, creating a living barrier strain that prevents important nematode species from reaching the roots • Acceleron • Fungicides: Ipconazole (Vortex), Metalaxyl (Apron XL, Ridomil), Trifloxystrobin (Stratego, Compass) • Insecticide: Clothianidin (Poncho 250) Seed Treatments

7. Trans-gene traits and seed treatments for hybrids entered in the LAES Corn OVT over three years.

8. Trans-gene traits and seed treatments for the 2012 LAES Corn OVT

9. DARYL BOWMAN CORN TESTING – DIFFERENT VERSIONS OF THE SAME HYBRID

10. TOM BECHMAN AUGUST 14, 2007 FARM FUTURES 60 CORN HYBRIDS PARENT AND 2 VERSIONS ONLY A FEW VERSIONS WERE NOT THE SAME AS PARENTS WATCH FOR VARIATIONS IN CORN HYBRIDS

11. I see no harm in combining/subbing RR versions with non-RR versions. I'd be hesitant to do the same for bt or LL versions. I see no harm - even some good - in head-to-head testing of conventional vs GMO vs stacks in the same trials. The data might save some farmers $$$$ as there is apt to be little difference in some locations and the rootworm bts (and some cbbts as well) may actually come at a yield cost. I doubt that most of your corn tests are accurate enough to detect such differences, as they tend to be small and our errors (relative to the Midwest) are large/huge. MAJOR GOODMAN - NCSU

12. 1) One version of a hybrid should be entered. 2) Second version should be considered the same as previous year because the base genetics are the same. DENNIS MCCOY - PIONEER

13. Have no good solution…..sometimes version changes have an anticipated effect on performance, sometime they won’t, so not sure you can make a hard and fast rule…..simplest and cleanest is probably to accept each version as a different product and not combine for multi-location or multi-year summaries. The version changes probably won’t slow down….I’m know that we, and I’m sure others,  have a pipeline that will continue to launch new traits in all crops. MIKE BAKER – MONSANTO