Charles Wortmann
emeriti
- Emeritus Professor Agronomy & Horticulture University of Nebraska–Lincoln
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402-472-2811
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Research Cited in CW
How Manure Impacts Soil Aggregation
Soil Sampling for Better Fertilization Decisions
October 17, 2023
Recommendations for collecting soil samples to ensure the quality results needed for good management decisions about fertilizer, manure and lime application rates.
Considerations for Fall Fertilizer-Nitrogen Application
October 30, 2019
Fall fertilizer applications offer cost savings and time management benefits, but also may contribute to increased soil nitrate-N leaching. With Nebraska's high soil moisture levels, consider these suggestions when applying nitrogen this fall.
Adding Alfalfa to Corn-Soybean Rotation can Increase Profit, Reduce Nitrate Leaching
July 31, 2019
University research shows that adding alfalfa into corn-soybean rotations can help reduce the loss of nitrate to and increase the extraction of nitrate from aquifers while improving profitability.
Hemp Production for Fiber or Grain - Revised
March 25, 2020
Information for those considering growing hemp for fiber or grain in Nebraska, including a Q&A and sample production budgets from other states.
Hemp Production for CBD - Revised
March 25, 2020
Research from other states and countries offers some insight into practices for growing CBD hemp in Nebraska. CBD hemp is a high-value crop that's labor-intensive and often grown more as a horticultural than as an agronomic crop.
Hemp Production in Nebraska - Revised
March 25, 2020
Is hemp on your horizon as a new crop for your rotation? In this, the first of three stories on the topic in this week's CropWatch, two agronomy professors outline key production information, often drawn from research in other states and countries.
Nutrient Management Suggestions for Corn Updated in EC117
July 9, 2019
The Nebraska Extension Circular, Nutrient Management Suggestions for Corn (EC117), has been updated to account for residual soil nitrate-N and provide an alternative for determining fertilizer-P rates.
Industrial Hemp Production in Nebraska
June 21, 2019
Under the 2019 Nebraska Hemp Farming Act, the Nebraska Department of Agriculture (NDA) may license persons to cultivate, handle or process hemp under an expanded NDA hemp pilot program. Individuals may apply to NDA by 5 p.m. Friday, June 28 for hemp cultivation licenses under the pilot program.