Research Updates

Three soybean plants demonstrating how plant architecture responds to planting population.

Variable Seeding Rate for Soybean

January 23, 2019
Discussion of findings from on-farm soybean research to identify uniform field management zones and the optimum seeding rate within each zone. This is from one of the presentations to be made at the Nebraska Crop Management Conference Jan. 28-29 in Kearney.

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Pollen-Mediated Gene Flow and Transfer of Herbicide-Resistant Alleles

January 22, 2019
Pollen-mediated gene flow at a distance could allow the spread of rare herbicide-resistant alleles and favor the evolution of multiple herbicide-resistant biotypes through the accumulation of different resistant genes in an individual weed or weed population. From the Nebraska Crop Management Conference Proceedings.

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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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Hairy vetch cover crop

Impact of Cover Crop Management on Rainfed Corn Production in Western Nebraska

January 9, 2019
Researchers report their findings from a one-year cover crop study at two sites in western Nebraska to study the impact of planting and termination dates and cover crop species selection. This article is part of the Crop Production Clinic Proceedings 2019.

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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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