DroughtGard® Hybrids Corn Products Response to Overwatering

Trial Overview

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  • Every year, farmers along with their seed13;10;representatives try to predict what corn products and traits will do best in13;10;various environments on dryland and irrigated fields.
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  • Corn products with DroughtGard®13;10;Hybrids technology can allow plants to adapt quickly and handle water stressed13;10;environments better than corn without the technology.
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  • However, there are years when rainfall is13;10;plentiful and corn plants may receive more water than needed.
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  • Can corn products with DroughtGard®13;10;Hybrids technology perform as well as corn products without the technology when13;10;too much water is received? 
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Research Objective

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  • Determine if there are any13;10;differences in performance of two corn products with DroughtGard Hybrids13;10;Technology compared to two similar products without the technology across13;10;irrigated overwatering treatments.
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13;10;Location 13;10;
13;10;Soil Type 13;10;
13;10;Previous Crop 13;10;
13;10;Tillage Type 13;10;
13;10;Planting Date 13;10;
13;10;Harvest Date 13;10;
13;10;Potential Yield 13;10;
13;10;Planting Rate 13;10;
Gothenburg, NE
Hord Silt Loam
Wheat
Strip-Till
05/05/2016
10/25/2016
260
33,940
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13;10; Site Notes:13;10;

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Two corn products (112 and 113 RM) with DroughtGard Hybrids Technology were13;10;compared to two similar products of the same relative maturity in a randomized13;10;split-plot design with irrigation treatment as the whole plot and corn product13;10;type (with or without DroughtGard Hybrids Technology) as the subplot with four13;10;replications.Irrigation treatments with total irrigation applied was as follows: 
          o  13;10;100% full irrigation (FI) – 5 inches 
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          o  13;10;160% FI – 8.3 inches 
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          o  13;10;220% FI – 11.6 inches 
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          o  13;10;280% FI – 14.8 inches
13;10;Seasonal rainfall amounts were as follows: 
           o  13;10;April – 6.7 inches 
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           o  13;10;May – 7.7 inches 
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           o  13;10;June – 2.6 inches 
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           o  13;10;July – 3.6 inches 
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           o  13;10;August – 0.7 inches 
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           o  13;10;September – 0.6 inches
13;10;Herbicide applications were applied to manage weeds, with no insecticide13;10;or fungicide applications.
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Understanding the Results

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Figure 1.  Soil13;10;moisture calculated from capacitance probes.
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  • Soil moisture calculated from capacitance probes13;10;indicated that the 280% FI soil profile had an abundance of moisture over the13;10;growing season when compared to the 100% FI soil profile (Figure 1).
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  • There was no significant corn product by irrigation13;10;treatment interaction with or without  DroughtGard Hybrids Technology (Figures 2 and 3).
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  • Results were similar to testing conducted in 201513;10;where no differences were observed between corn products with and without13;10;DroughtGard Hybrids technology under irrigation treatments of 100%, 120%, and13;10;160% FI.1
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What Does This Mean for Your Farm

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  • The value of corn13;10;products with DroughtGard Hybrids Technology is their ability to yield across a13;10;wide range of environments.
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  • Farmers should13;10;have confidence that corn products with DroughtGard Hybrids Technology will13;10;perform as well as corn products without the trait when growing under13;10;conditions of excess water from irrigation and/or rainfall.
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