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Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

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April 5, 2018

Alternative Nutrient Supply Products: Highlights of On-Farm Research Results

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Laura Thompson - Former Extension Educator, Jackson Stansell - On-Farm Research Assistant

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April 5, 2018

What’s New with P Fertilizer Use?

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

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April 5, 2018

What's New with S Fertilizer Use?

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Bijesh Maharjan - Extension Soil and Nutrient Management Specialist

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April 5, 2018

What’s New with K Fertilizer Use?

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

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April 5, 2018

Nutrient Management for Organic Production

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

CO2 sensor in rye cover crop

February 26, 2018

Cover Crop and CO2 Emissions

By Sabrina Ruis - Post-Doctoral Associate, Humberto Blanco - Professor of Soil Science, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Virginia Jin - USDA ARS Research Soil Scientist, Tyler Williams - Former Cropping Systems Extension Educator

Taking CO2 measurements in plots where residue has been baled

February 26, 2018

Corn Residue Removal and CO2 Emissions

By Manbir Rakkar - Doctoral Student, Humberto Blanco - Professor of Soil Science, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Tyler Williams - Former Cropping Systems Extension Educator, Virginia Jin - USDA ARS Research Soil Scientist

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.

January 8, 2018

Fertilizer N Substitution Values of Land-Applied Organic Materials

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Tim Shaver - Extension Nutrient Management Specialist, Juan Pablo Garcia - Graduate Student, Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Bijesh Maharjan - Extension Soil and Nutrient Management Specialist, Brian Krienke - Former Soils Extension Educator

Land-applied manure

January 8, 2018

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

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Tim Shaver - Extension Nutrient Management Specialist, Juan Pablo Garcia - Graduate Student, Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Bijesh Maharjan - Extension Soil and Nutrient Management Specialist, Brian Krienke - Former Soils Extension Educator

Chart

January 8, 2018

Improved Use Efficiency of Applied Organic Nitrogen

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Tim Shaver - Extension Nutrient Management Specialist, Juan Pablo Garcia - Graduate Student, Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Bijesh Maharjan - Extension Soil and Nutrient Management Specialist, Brian Krienke - Former Soils Extension Educator

Figure 1. Based corn stalk residue.

December 8, 2017

Crop Residue Removal: Impacts on Yield

By Jenny Rees - Extension Educator, Marty Schmer - USDA Research Agronomist, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

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December 7, 2017

Amelioration Strategies after Corn Residue Removal

By Jenny Rees - Extension Educator, Marty Schmer - USDA Research Agronomist, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

Figure 1. Corn stalk residue with downed ears, baled and ready to use. (Photo by Jenny Rees)

December 7, 2017

Corn Stover Removal: Nutrient Value of Stover and Impacts on Soil Properties

By Jenny Rees - Extension Educator, Marty Schmer - USDA Research Agronomist, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

Wheat

August 29, 2017

Fertilizer Management for Winter Wheat

By Bijesh Maharjan - Extension Soil and Nutrient Management Specialist, Richard Ferguson - Extension Soil Fertility Specialist, Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Tim Shaver - Extension Nutrient Management Specialist, Brian Krienke - Former Soils Extension Educator

drought stressed corn

August 11, 2017

Estimating the Full Value of Crop Residue

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Robert Klein - Western Nebraska Crops Specialist

Cover of the new ISU Publication,

June 8, 2017

Iowa Releases New Publication on Use of the Late Spring Soil Nitrate Test

By Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Brian Krienke - Former Soils Extension Educator, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

Chart of potential for nitrate-N leaching in spring 2017

May 25, 2017

Risk of Nitrate Leaching Across Nebraska as of May 21, 2017

By Haishun Yang - UNL Associate Professor of Agronomy and Horticulture, Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Brian Krienke - Former Soils Extension Educator, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Richard Ferguson - Extension Soil Fertility Specialist

NebGuide cover

March 2, 2017

New NebGuide: Soil Management for Increased Soil Organic Matter

By Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist

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January 6, 2017

The Long View of Nitrogen Recommendations from Nebraska Extension

By Charles Shapiro - Extension Soil Scientist—Crop Nutrition, Charles Wortmann - Emeritus Extension Soil and Nutrient Management Specialist, Richard Ferguson - Extension Soil Fertility Specialist, Tim Shaver - Extension Nutrient Management Specialist, Brian Krienke - Former Soils Extension Educator, Bijesh Maharjan - Extension Soil and Nutrient Management Specialist, Gary Hergert - Emeritus Soil Nutrient Management Specialist