Research Updates

Field photos of the three herbicide treatments tested.
Figure 1. Three herbicide treatments were applied to determine whether a pre-emergence herbicide affected the critical period of weed control. From left, the plots show: 1) Corn at V12 that had not received a pre-emergence herbicide; 2) corn at V12 that received an atrazine treatment; corn at V12 that received an Acuron treatment

Preemergence Herbicides Influence the Critical Period for Weed Removal in Roundup Ready Corn

May 11, 2018
Researchers tested three preemergence herbicide strategies in Roundup-Ready Corn to identify how their application affected the critical period of weed control — the period when weed control is essential to avoid yield loss.

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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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Chart

Improved Use Efficiency of Applied Organic Nitrogen

January 8, 2018
An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics about recent research to validate or adapt canopy sensor-guided in-season N application practices for fields with manure or other organic material applied and to improve the predictionof fertilizer N substitution for organic materials.

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Land-applied manure
Research to validate or adapt canopy sensor-guided in-season N application practices for manured fields was evaluated in two trials.

Adaptation of Canopy Sensor-Guided In-Season Nitrogen Application for Manured Fields

January 8, 2018
An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics on research on land application of manure to enhance soil nutrients for crop production.

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Chart of residue required for different slopes

Crop Residue and High-Carbon Char: Potential Soil Conservation Tools

May 8, 2018

Soil is the single most important resource on which our agriculture depends. Proper soil management is necessary to sustain long-term agricultural productivity. Soil loss through erosion or run-off hurts agricultural production with depletion of organic matter and fertility. It also has environmental implications.

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Chart of N research treatments

Feasibility of Sensor-Based Nitrogen Fertigation Management in Corn

January 8, 2018
An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics on university research testing sensor-based N fertigation treatments.

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Figure 1. Land-applied manure from finishing 5 million beef cattle per year in Nebraska contains the equivalent of 150 lb/ac/yr N applied to 1.2 million acres.
Figure 1. Land-applied manure from finishing 5 million beef cattle per year in Nebraska contains the equivalent of 150 lb/ac/yr N applied to 1.2 million acres.

Fertilizer N Substitution Values of Land-Applied Organic Materials

January 8, 2018
An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics on accounting for nitrogen from land-applied manure when determining soil nutrient needs for crop production.

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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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