Research Updates

Distribution of the 1-square-kilometer cells where irrigated land in 2012 exceeded 50 percent of the cell area (blue-green dots) in Nebraska. Pink corresponds to declining annual, while yellow corresponds to declining irrigation-season (May-July) precipitation rates over the 1979-2015 period. The brownish color marks their spatial overlap.

Research Shows Large-Scale Irrigation Reduces Local Precipitation February 28, 2018

A University of Nebraska-Lincoln researcher has shown that widespread irrigation has resulted in a net moisture loss in Nebraska, a finding that could have worldwide water conservation implications if substantiated by further research.

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CO2 sensor in rye cover crop

Cover Crop and CO2 Emissions February 26, 2018

Do cover crops affect CO2 emissions from the soil and if so, under what conditions? These were among the questions addressed by university researchers monitoring CO2 emissions from cereal rye cover crops in irrigated and dryland no-till continuous corn treatments.

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Taking CO2 measurements in plots where residue has been baled
Taking CO2 measurements in plots where residue has been baled

Corn Residue Removal and CO2 Emissions February 26, 2018

University research looking at CO2 emissions from two types of residue removal (baling and grazing) compared with a control treatment found little day-to-day impact; however, when looking at cumulative data for the whole year, grazing did appear to affect cumulative CO2 emissions in irrigated crop-livestock systems. This data represents the first year of this study.

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Figure 1. Aerial imagery was collected at bean emergence using a drone. All dark green rows correspond to plots with different rates of char (10, 20, 30, 40, and 60 tons/acre).
Figure 1. Aerial imagery was collected at bean emergence using a drone. All dark green rows correspond to plots with different rates of char (10, 20, 30, 40, and 60 tons/acre).

Coal Combustion Residue: A Potential Soil Amendment February 22, 2018

University of Nebraska researchers applied char, a by-product of sugar beet processing, at three sites to study its effect on soil properties.

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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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Don Batie with his strip-till soybean plot.

Growers Share about Their On-Farm Research February 21, 2018

Three growers — Don Batie of Lexington, Ken Herz of Lawrence, and Derek Dam of Hooper — share what they learned from conducting on-farm research in 2017. Hear from other growers and learn how you can participate at Nebraska On-Farm Research Network Updates this week in Grant and Alliance.

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Interns Share Research Results from Field Studies and Extension Experience February 14, 2018

Seven Experiential Learning Fellows in a USDA-funded program at the University of Nebraska-Lincoln spent their summer 2017 working with scientists, reviewing and conducting research, and developing Extension education to convey research findings to growers for field application. This article describes the program and links to their articles on timely topics from cover crops to soil management.

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Figure 1. Season-long glyphosate-resistant common ragweed competition in a soybean field near Adams.
Figure 1. Season-long glyphosate-resistant common ragweed competition in a soybean field near Adams.

Preplant Tillage to Manage Glyphosate-resistant Common Ragweed February 13, 2018

Nebraska university weed scientists conducted research in 2017 to identify the effect of preplant tillage on weed emergence in an effort to develop an integrated weed management plan to control glyphosate-resistant weeds. Here's what they found.

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