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

Field trials comparing early and late planted rye cover crop
Field trials comparing early and late planted rye cover crop

Implementation of Cover Crops in Corn and Soybean Systems in Nebraska November 29, 2016

A short review of cover crop research conducted at four University of Nebraska research fields (two irrigated, two dryland) to study the feasibility and impact of winter cover cropping on soil quality, soil water, and crop yields in corn-soybean systems. Objectives were to quantify cover crop emergence, fall and spring biomass production, soil water changes, soil chemical and physical property changes, and crop yields.

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Graph showing cover crop effect on corn yield based on planting date
Graph showing cover crop effect on corn yield based on planting date

Interseeding Cover Crops into Corn November 29, 2016

This cover crop study looked at the effect on corn yield and cover crop biomass production from interseeding cover crops at various points in the corn production cycle.

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Harvest 2016 — When Corn Yields are Below Expectations October 14, 2016

A review of 2016 growing conditions across Nebraska sheds light on a number of factors that may have contributed to reduced yield in individual fields. An understanding of these factors may be helpful when selecting seed for 2017.

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Figure 1. Variation in kernel setting in corn in Iowa. (Photo by Mark Licht)
Figure 1. Variation in kernel setting in corn in Iowa. (Photo by Mark Licht)

Yield Forecast Center Predicts Corn Yields Well Below USDA-NASS Projections September 22, 2016

End-of-season yield forecasts for irrigated and dryland corn across eight states in the Corn Belt indicate above average yields for 2016, but not the record-breaking yields predicted by USDA in their September forecast. While two states are forecast to have yields below the 10-year average (-1% to -4%), the remaining states showed above average yields ranging from 1% to 21% above the 10-year average.

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Probabilities of yield deviations for rainfed corn production across the Corn Belt.
Probabilities of yield deviations for rainfed corn production across the Corn Belt.

Corn Yield Forecasts as of Sept. 7 September 8, 2016

The Sept. 7 corn yield forecasts show a majority of the irrigated sites expected to produce above normal, but not record-breaking yields. Forecasted yields for rainfed sites are more variable, although most are expected to be near normal. Above average yields are expected for 11 of the 37 sites studied and below-normal yields are forecast for five sites.

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Map of corn yield deviation from long-term averages

Corn Yield Forecasts for Aug. 24, Including State Forecasts August 25, 2016

August 24 corn yield forecasts for 41 sites across the Corn Belt showed many near or above average. At Nebraska rainfed corn sites there is a high probability (>75%) of above-average yield at the North Platte and central east sites and a high probability (>75%) of below-average yield at the southwestern and southeastern Nebraska sites (McCook, Clay Center, and Beatrice). In irrigated corn there was a high probability of near or above average yields for all except the Beatrice site. See the story for data tables and discussion.

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Malformed corn ears
Malformed corn ears

Corn Ear Formation Issues Likely Correlated With the Loss of the Primary Ear Node August 19, 2016

UNL agronomists and educators responding to grower questions surveyed a number of corn fields this week and found a range of corn ear issues: short husks, dumbbell-shaped ears, and multiple ears per node. The article describes and discusses the situation, potential stress agents, and the development of corn. It also encourages growers to check their fields pre-harvest to better assess causes of potential yield loss.

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Figure 1: Early-planted rye (left) and late-planted rye before corn at Concord, April 22, 2016.
Figure 1: Early-planted rye (left) and late-planted rye before corn at Concord, April 22, 2016.

Biomass Production of Winter Annual Cover Crops in Corn and Soybean August 11, 2016

Rye was the leading biomass producer in the first two years of a four-year study exploring whether winter cover cropping in no-till corn and soybean systems in Nebraska can benefit soil quality despite their short growing season.

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