Hybrid x Herbicide Injury

2009 HYBRID x HERBICIDE CORN INJURY CHART  NuTech Hybrid Chloro./Triazine Guardsman Max® Chloro./Triazine Harness Xtra® Phenoxyacetic Acid Frontline® 2, 4-D Sulfonylurea Accent® HYBRID/BRAND 1X 3X 1X 3X 1X 3X 1X 3X 0A-887 1.0 1.5 1.0 1.5 2.0 5.3 1.5 2.3 5X-591™* RR/HXT 1.5 2.5 1.0 1.8 1.5 3.5 1.3 2.3 5H-797™* RR/HX 1.3 2.8 1.0 1.8 2.0 4.3 1.3 2.3 5X-100  RR/HXT 1.3 2.0 1.0 2.3 1.8 3.5 1.0 1.8 5H-700™* RR/HX 1.3 3.0 1.5 2.5 1.3 2.5 1.5 2.0 0A-201 1.3 2.8 1.3 2.0 1.5 3.3 1.0 2.0 5H-501™* RR/HX 1.0 2.0 1.0 2.0 3.0 4.8 1.0 1.8 0A-506™* 1.3 2.5 1.5 2.5 2.5 4.0 1.3 2.3 0A-809 1.0 1.5 1.0 2.0 1.0 2.5 1.0 1.8 5H-210™* RR/HX 1.0 2.0 1.0 2.0 2.5 4.3 1.0 1.3 5X-211  RR/HXT 1.5 2.0 1.3 2.0 1.5 3.5 1.0 2.3 0A-711™* 1.0 1.8 1.0 1.8 2.8 5.0 1.3 2.3 0A-911™* 1.3 1.5 1.3 2.3 2.5 6.3 1.0 1.5 0A-412™* 1.0 2.0 1.0 1.8 2.0 3.8 1.0 1.5 0C-213 YGCB 1.5 2.0 1.0 1.5 2.0 3.5 1.3 1.8 5X-614™* RR/HXT 1.8 3.5 1.8 3.0 2.0 4.8 1.5 2.0 0A-716™* 1.3 2.8 1.3 2.3 1.5 4.0 1.0 1.3 SCALE OF INJURY:  Average of two ratings. 1-2  =  Adequate tolerance 3-4.5  =  Requires careful management 5-6.5 =  Requires very careful management 7-10  =  Dangerous The corn was planted on May 5th, 2009, at 32,000 seeds/A and chemicals were applied May 10th & May 30th. Visual ratings were on may 28th, June 9th and June 19th with two ratings for each plot and chemical. *G2® brand seed is distributed by NuTech Seed, LLC. Guardsman Max® is a registered trademark of BASF. Harness Xtra® is a registered trademark of Monsanto Technology LLC. Accent® is a registered trademark of DuPont. Frontline™ 2,4-D is a registered trademark of Dow AgroSciences LLC. NuTech Seed is keeping pace with the newest innovation developed to profile starches inside the corn kernel. University of Wisconsin has recently unveiled an evaluation method that quantifies the level of a protein called zein. Low zein levels have been linked to higher starch availability, resulting in more starch for an energy source. Utilizing this industry changing innovation, NuTech has also developed a proprietary evaluation system that provides a numerical index per brand, and the ability to manage hybrids to achieve maximum starch availability. Tech sheets available for more information.

1. Interveinal chlorosis as a result of chlorimuron carryover, due mostly to high soil pH (>6.8). 2. Yellowing of the whorl with chlorotic patches across the leaf. Plants will often be stunted and leaves can be malformed. This was a result of an application during high temps and humidity stress conditions. This can result from an organo phosphate insecticide/ALS interaction. 3. Corn can leaf out underground or have improper leaf unfurling. This can happen with alachlor, metolachlor, actochlor or dimethenamid; with misapplication (herbicide rate too high for soil type), or under stressed conditions (cool, wet soils) where corn is growing slowly. 4. Chlorosis of leaves with purpling midrib also due to chlorimuron carry over. 5. "Pinched ears" as a result of a late herbicide application where most of the corn leaves and whorl intercept the herbicide. 6. Root injury called "bottle brush" roots. This condition can be a result of ALS carryover. It generally leads to the purpling of the midrib in corn due to phosphate deficiencies.                                   PROLAMIN ZEIN AUTHORITY!!! Unfolding the Mysteries of the Kernel!