Roger Elmore - Emeritus Extension Cropping Systems Agronomist

Roger Elmore

emeriti
Work Keim Hall (KEIM) 202
Lincoln NE 68583-0915
US
Work 402-472-2811 On campus, dial 2-2811
Roger Elmore, is an University of Nebraska–Lincoln agronomy and horticulture professor, Heuermann Chair and interim associate department head. Elmore, a Nebraska Extension cropping systems specialist and Water for Food Daugherty Global Institute Faculty Fellow, has spent his entire career addressing agronomic issues relevant to the immediate needs of crop producers. He provides research information that is science-based, timely, and relevant to a diverse audience. Elmore has a long history of applied crop production research and extension programs focused on maintaining or increasing crop production, profitability, and water use efficiency by seeking and demonstrating environmentally sound production practices. His focus is on research and developing, teaching and extending timely and pertinent crop management information for farmers, agribusiness, extension personnel and students. His most significant research contributions have centered on evaluating corn growth and yield response to extreme weather events. He has been able to engage diverse groups based on this research with high-impact extension programming. He co-leads a cover crop research project supported by the Nebraska Soybean Board and the Nebraska Corn Board. He has served as a consultant for various organizations across the globe and he was worked on projects in Ghana, China, Argentina and Puerto Rico. He was employed with the University of Nebraska–Lincoln for 24 years before spending nearly nine years as a corn extension specialist at Iowa State University where he lead development of the “Corn growth and development” extension publication — one of his most important extension contributions to date. He returned to Nebraska in 2014 as a cropping systems agronomist. Having a successful career as a cropping systems agronomist focusing primarily on corn and soybean production, Elmore believes in the synergism of effective teams and has been able to develop and deliver effective state, regional, national and international programs.

icon-academic-capEducation

  • Other, Illinois Valley Community College, 1972
  • BS, Illinois State University, 1974
  • MS, University of Illinois, 1978
  • Ph D, University of Illinois, 1981

icon-business-chartResearch & Grants

  • Sustainable Corn/Soybean Production, Ne Soybean Board, October 2017
  • Sustainable Corn/Soybean Production, Ne Corn Board, July 2015

icon-bookmark-starAwards & Honors

  • Fellow, Crop Science Society of America, 2017
  • Agronomic Education and Extension Award , American Society of Agronomy, 2017

Faculty Bio

Palmer amaranth
Figure 1. This female Palmer amaranth plant can produce up to 0.5 million seeds.

Watch for Palmer Amaranth in Conservation Reserve Program (CRP) Fields

May 12, 2017
Palmer amaranth has not been confirmed in conservation plantings in Nebraska; however, the identification and occurrence of Palmer amaranth in CRP fields in Iowa has raised concerns among weed scientists and growers about its spread into conservation plantings in Nebraska and offer some suggestions for growers.

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Corn seedlings exhibiting "yellow banding"
Figure 1. "Cross-banding" on emerged corn at SCAL planted on April 17, 2017. Leaves were encased in the coleoptile below ground during the extreme dip in air and soil temperatures. Emergence occurred between May 5 and 10 and was about 50% May 10. Expect plant-to-plant variation in emergence, growth, and development with early-planted corn. (SCAL, May 10, 2017. Photos by Roger Elmore)

‘Cross-Banding’ on Corn Leaves Due to Pre-Emergent, Cold Soil Temperatures

May 12, 2017
Early-planted corn at the university's South Central Ag Lab was not emerged during the late-April cold snap, but upon emergence displayed symptoms of “cross-banding”: yellow to pale green, horizontal bands ― perpendicular to the leaf midribs. These often appear in a similar position on other seedlings and at about the same height above ground on different leaves.

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Freeze damage to corn seedlings
Figure 1. (left) Yellow corn displaying damage from last week’s frost. Eighty to ninety percent of plants in this area of the field will likely recover, thus replanting would not be justified. Figure 2. Plant displaying frost injury. Both in Lancaster County, May 4, 2017. (Photos by Roger Elmore)

Do I Need to Replant My Corn?

May 5, 2017
Considering whether your corn should be replanted? The authors look at types of plant damage at early growth stages and the effect on potential yield. It includes a table of relative yield potential of corn by planting date and population.

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Frost-damaged corn
Figure 1. Buggy-whipping, shown hear in the two plants on the left, is when dead leaf tissue traps new leaf tissue, is one symptom of frost-damaged early season corn. (Archive photo by Roger Elmore)

Risk of Freeze Damage in Early-Planted, Emerged Corn

April 28, 2017
Early-season freeze damage results in a range of potential yield impacts. Severe damage is often limited to low-lying areas within a field because cool air is heavier than warm air. Early season survival of corn plants is attributed to growing-point protection below the soil surface; however, a hard frost can penetrate the ground and kill plants. Regrowth of corn following freeze damage is often impeded by dead leaf tissue that can entrap new leaves.

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Meat thermometer measuring soil temperature

Corn, Soybean Planting Considerations for this Week’s Cold Snap

April 24, 2017
With nighttime lows predicted to drop several nights this week, growers are advised to cautiously assess the potential for germination problems due to imbibitional chilling before planting. Agronomists advise checking soil temperatures in each field the day of planting as well as forecast temperatures for 24 hours (soybeans) or 48 hours (corn) after planting.

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Center pivot irrigated soybeans
Management in a successful soybean-after-soybean cropping system may require growers to make some slight adjustments in their practices, including irrigation, seed selection, and pest management.

Planting Soybean after Soybean (Part 2): In-Season Management Considerations

April 13, 2017

In Part 1 of this article, we look at considerations for planting soybean after soybean. In this article, Part 2, we share considerations for in-season management.

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soybean field

Planting Soybean after Soybean (Part 1): Planting Considerations

April 13, 2017
Farmers are increasing their soybean plantings for 2017, which likely means some are shifting to soybeans-after-soybeans. This article looks at what you should be considering at planting time as you consider changing your cropping sequence.

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Well nodulated soybean roots

Making Data-Driven Decisions on Soybean Inoculation

April 6, 2017
Farmers, agronomists, and researchers provide three steps to deciding whether to inoculate soybeans this spring.

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