Research Updates

Cattle grazing cover crops

Cover Crop Grazing: Impacts on Soils and Crop Yields January 22, 2019

Results from a three-year study in rainfed and irrigated no-till cropping systems in Nebraska suggest that moderate cattle grazing of cover crops may not negatively impact soil properties and crop production.

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Routes of nitrogen loss in the soil

Nitrogen Inhibitors for Improved Fertilizer Use Efficiency January 14, 2019

This article looks at how some nitrogen inhibitors temporarily reduce populations of Nitrosomonas and Nitrobacter bacteria, the soil bacteria responsible for converting ammonium to nitrite and nitrite to nitrate as well as what to look for in product claims.

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Trial studying efficacy of products on Palmer amaranth

Palmer Amaranth Control in Dry Bean January 14, 2019

Residual herbicides applied at or before planting are critically important to controlling emerged Palmer amaranth in dry bean. Research at the Panhandle REC assessed the efficacy of PRE and pre-plant incorporated (PPI) residual herbicide programs.

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Figure 1. Cover crop trials were conducted in 2017-2018 at the UNL Havelock Research Farm near Lincoln to discover the impact of several practices on management of winter- and summer-annual weeds.
Figure 1. Cover crop trials were conducted in 2017-2018 at the UNL Havelock Research Farm near Lincoln to discover the impact of several practices on management of winter- and summer-annual weeds.

Using Cover Crops as a Weed Management Tool for Managing Herbicide-Resistant Weeds January 9, 2019

Cover crop research trials were conducted in 2017-2018 at the UNL Havelock Research Farm near Lincoln to discover the impact of soybean maturity group, planting date, termination date, and herbicide use on on management of winter- and summer-annual weeds.

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Soybean field where previous cover crop provided adequate weed control.
Soybean field where previous cover crop provided adequate weed control.

How Much Cover Crop Growth Is Needed For Weed Control? January 9, 2019

How well do cover crops control weeds and can they offset herbicide costs in corn-soybean cropping systems across the Corn Belt? That's the focus of a multi-state meta-analysis of 15 cover crop research projects.

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Field of cover crops

Native Warm-Season Grass Management and Planting Decisions for Alternative Forages January 9, 2019

One of the most important drivers of productivity and cost effectiveness of annual forages is planting date. Having realistic planting date expectations is one key to proper species selection.

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Double cropping trial near Mead

Double Cropping Field Peas with Cover Crops, Forages, and Short-Season Crops January 9, 2019

Farmers throughout the Corn Belt may want to consider diversifying traditional corn and soybean rotations to increase agronomic sustainability and to spread financial risks associated with low market prices of corn and soybean. An alternative is a more diverse crop rotation using field pea (short-season grain crop) followed by cover crops, forages, or short-season crops (Figure 1).

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Chart of grain yield (averages for 15 site-years) with five P application practices.

Fertilizer P for Corn: Update of Research Findings and Revised Recommendations January 9, 2019

Results of research conducted since 2000 to address fertilizer phosphorus (P) for corn will be reviewed. The current fertilizer P recommendations for corn will be discussed and revised recommendations presented at the 2019 Crop Production Clinics.

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