Javed Iqbal - Extension Nutrient Management and Water Quality Specialist
Nathan Mueller, Nebraska Extension water and integrated cropping systems educator, speaks to participants during the 2023 4Rs Nutrient Stewardship Field Day.
September 13, 2023
Throughout the field day, educators shared insights and conducted live demos on optimizing management of nitrogen, phosphorus and potassium, including via sensor-based fertigation.
May 17, 2023
Nebraska Extension recommendations on minimizing crop injury from anhydrous ammonia applications.
Nitrogen management with sensor-based fertigation is one of many topics that will be discussed by experts from the University of Nebraska-Lincoln and Iowa State University during the 2023 4Rs Nutrient Stewardship Field Day.
April 27, 2023
This year’s 4Rs Field Day will focus on up-to-date research information and demonstrations on all three major crop nutrients: nitrogen, phosphorus and potassium.
As it aggressively scavenges nitrogen in the soil, alfalfa can greatly reduce nitrate contamination of groundwater with no negative implications for future crops if planted in rotations.
March 30, 2023
This UNL research study provides insights on the rotation of annual crops with alfalfa as a highly effective means of reducing nitrate-nitrogen contamination in groundwater.
For producers planting corn-on-corn this growing season, Nebraska Extension encourages taking soil samples to determine accurate nitrate levels and adjusting N application rates accordingly, as there may be considerable amounts of residual nitrogen left from the previous corn crop.
March 14, 2023
For producers planning corn-on-corn this growing season, there may be a substantial opportunity to reduce nitrogen fertilizer applications, as drought and reduced yields likely left higher-than-normal residual N in many fields.
September 29, 2022
At the end of the season, a nitrate test can help determine whether the crop was under-, adequately or over-fertilized with nitrogen, resulting in the potential to significantly reduce input costs.
Figure 1. Departure from normal precipitation during 2022 growing season in Nebraska.
September 28, 2022
In irrigated or dryland areas with normal production, management practices may continue as normal, but for dryland areas with drastic yield reductions, there is potential for nitrogen fertilizer adjustment for the 2023 crop.
Javed Iqbal, Department of Agronomy and Horticulture assistant professor and Extension soil nutrient management and water quality specialist, presents updated research on nitrogen source management, and nitrogen rate using publicly available nitrogen recommendation tools at the 2022 4Rs Nutrient Stewardship Field Day.
August 2, 2022
The annual 4R Nutrient Stewardship Field Day featured research and tools on improving nutrient management, sulfur management, nitrogen use efficiency and more.