Roger Elmore - Extension Cropping Systems Agronomist

Roger Elmore

(faculty)
Work Keim Hall (KEIM) 165
Lincoln NE 68583-0915
US
Work 402-472-1451 On-campus 2-1451
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

Comparison of cover crop planting dates

How Planting Date, Varieties Affect Spring Cover Crop Growth May 4, 2018

Reduced spring growth resulting from delayed planting of small grain cover crops has been widespread throughout the western Corn Belt.

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Soybean fields in planting date study at UNL's East Campus
Planting date studies conducted on UNL's East Campus showed yield decreases of 1/4 bu/ac (2003) and 5/8 bu/ac (2004) for each day after May 1 that soybean were planted.

Amplifying Positive Impacts of Early Soybean Planting April 19, 2018

The benefits of planting soybean near May 1 are well documented. Now, what are the next steps growers can take to further expand on these benefits? Are different maturity groups warranted? What groups are typically being used in irrigated and rainfed environments in Nebraska?

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Figure 1. Planting into cold soil (below 50°F) when cold conditions are expected for the next 48 hours can lead to germination problems and seedlings not emerging or not emerging well. 1a. Corn seedling that started leafing out below ground and now has twisted leaves which will delay or negate normal plant development.. Figures 1b-c. Unemerged seedlings attempting to leaf out belowground. None of the seedlings shown should be counted as a productive plant.
Figure 1. Planting into cold soil (below 50°F) when cold conditions are expected for the next 48 hours can lead to germination problems and seedlings not emerging or not emerging well. 1a. Corn seedling that started leafing out below ground and now has twisted leaves which will delay or negate normal plant development.. Figures 1b-c. Unemerged seedlings attempting to leaf out belowground. None of the seedlings shown should be counted as a productive plant.

Cold Soil Temperature and Corn Planting Windows April 12, 2018

With stormy conditions back in the picture, many growers may be concerned about planting corn into cold, wet soils? By checking weather forecasts and soil temperature at planting (in the field and online) and the cold tolerance of seed, growers can identify 48-hour windows of opportunity for planting.

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Chart showing results of soybean row-spacing research

Results from 2017 Soybean Study and Insights for 2018 Planting February 22, 2018

University researchers report results from studies conducted on herbicide tolerance trait, row spacing (15-inch vs. 30-inch), and soybean maturities (early vs. late) at three locations of the Soybean Management Field Days in summer 2017.

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Integrating Cover Crops into a Corn and Soybean Cropping System January 8, 2018

An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics on recent research to understand the impact of planting dates, plant populations, and corn (Zea mays L.) hybrid comparative relative maturity (CRM) on corn growth, kernel moisture content, and corn yield prior to cover crops.

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Figure 1. Various soybean varieties exhibit differences in Sudden Death Syndrome foliar symptoms. (Photo by Nathan Mueller)
Figure 1. Various soybean varieties exhibit differences in Sudden Death Syndrome foliar symptoms. (Photo by Nathan Mueller)

Large Check, Small Seed, Significant Impact October 11, 2017

Seed selection is one of the first and most important management decisions you make. Consider the factors described here when deciding which corn hybrids and soybean varieties are apt to be top performers under your management and field conditions.

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Map indicating how various Nebraska and Kansas sites are expected to vary from average yields.

2017 Corn Yield Forecasts as of September 20 September 21, 2017

Crop modelers wrap up their forecasts of rainfed and irrigated corn yields across the Corn Belt for 2017, noting above-average yields for about 80% of the irrigated sites and more than 60% of the rainfed sites. Irrigated yields ranged from 11%-17% over long-term averages at those sites and rainfed yields at those sites were 13%-40% above average. View data for all the sites.

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Figure 1. Early-planted rye on the left and late-planted rye on the right in a research study at the Eastern Nebraska Research and Extension Center near Mead.
Figure 1. Early-planted rye on the left and late-planted rye on the right at in a research study at the Eastern Nebraska Research and Extension Center near Mead.

Cover Crop Productivity In Corn And Soybean Systems September 7, 2017

University researchers share results from their study of cover crops planted pre- and post-harvest and in seed corn at three sites: Clay Center, Concord, and Mead.

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