Eric Adee
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View article: Macronutrient Fertility on Irrigated Corn/Soybean in Rotation
Macronutrient Fertility on Irrigated Corn/Soybean in Rotation Open
Effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on a corn/ soybean cropping sequence were evaluated from 2015 to 2023 (corn planted in odd years) from a study initiated in 1983. Corn yields responded most to N, fol…
View article: East Central Kansas Experiment Field
East Central Kansas Experiment Field Open
This report includes the annual summary of precipitation and temperatures from 2024 at the research locations represented in the 2025 Field Research Report and further details about the Kansas River Valley locations and the east central Ka…
View article: Effect of Early Planting on Soybean Yield: 2021-2024 at Kansas River Valley
Effect of Early Planting on Soybean Yield: 2021-2024 at Kansas River Valley Open
To increase soybean yield potential, early planting dates have been promoted as a management practice that can increase the yield of soybeans. Early planting of soybeans can be a relative term, meaning late April/early May for some soybean…
View article: Effect of Corn Row Spacing on Herbicide Effectiveness for Weed Control
Effect of Corn Row Spacing on Herbicide Effectiveness for Weed Control Open
Cultural weed control practices, such as narrow row spacing, can be an essential component of successful weed management. In 2022 and 2023, experiments were conducted in the Kansas River Valley to evaluate the interactions of herbicide pro…
View article: Kansas River Valley Experiment Field
Kansas River Valley Experiment Field Open
This report includes the annual summary of precipitation and temperatures from 2024 at the research locations represented in the 2025 Field Research Report and further details about the Kansas River Valley locations and the east central Ka…
View article: Integrating Field Data and a Modeling Approach to Inform Optimum Planting Date × Maturity Group for Soybeans under Current and Future Weather Conditions in Kansas
Integrating Field Data and a Modeling Approach to Inform Optimum Planting Date × Maturity Group for Soybeans under Current and Future Weather Conditions in Kansas Open
Optimizing planting date by maturity group (PD × MG) is critical to increase productivity and reduce production risks. Understanding the effect of management, not only under current, but also future weather conditions, is even more relevan…
View article: Tillage Study for Corn and Soybeans: Comparing Vertical, Deep, and No-Tillage / Year 10
Tillage Study for Corn and Soybeans: Comparing Vertical, Deep, and No-Tillage / Year 10 Open
Trends from a tillage study conducted since 2011 have shown no clear differences between tillage systems for either corn or soybeans in lighter soils under irrigation. One year out of eight years has shown a yield advantage for either corn…
View article: Effect of Corn Row Spacing on Herbicide Effectiveness for Weed Control in 2022
Effect of Corn Row Spacing on Herbicide Effectiveness for Weed Control in 2022 Open
Cultural weed control practices such as narrow row spacing can be a key component of successful weed management. Experiments were conducted in the Kansas River Valley to evaluate interactions of herbicide programs and corn row spacings on …
View article: Footprints of corn nitrogen management on the following soybean crop
Footprints of corn nitrogen management on the following soybean crop Open
Corn ( Zea mays L.)–soybean [ Glycine max (L.) Merr.] is among the most typical crop rotations in the U.S. Corn Belt, and N is the most limiting nutrient for both crops. This study aims to assess the effects of N management for corn on the…
View article: Soybean planting date x maturity group in Kansas
Soybean planting date x maturity group in Kansas Open
Authors: Ignacio Ciampitti1, Luiz Henrique Moro Rosso1, Emmanuela van Versendaal1, James Kimball1, and Eric Adee1 1 Department of Agronomy, Kansas State University This dataset contains information on soybean planting dates and maturit…
View article: Macronutrient Fertility on an Irrigated Corn/Soybean in Rotation
Macronutrient Fertility on an Irrigated Corn/Soybean in Rotation Open
Effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on a corn/soybean cropping sequence were evaluated from 2013 to 2020 (corn planted in odd years) from a study initiated in 1983. Corn yield was near optimum at 160 lb…
View article: Comparison of Static and Active Downforce on Corn at the Kansas River Valley Experiment Field in 2020
Comparison of Static and Active Downforce on Corn at the Kansas River Valley Experiment Field in 2020 Open
Uniformity of plant spacing and emergence have been shown to be significant contributing factors to increasing corn yields. Improved seed meters that offer very precise seed drop have been available on planters for a number of years. Howev…
View article: Weed Management and Soybean Yields as Influenced by Row Width and Post-Emergent Herbicide Application Timing
Weed Management and Soybean Yields as Influenced by Row Width and Post-Emergent Herbicide Application Timing Open
Irrigated soybeans were grown in 2018 and 2019 at the Kansas River Valley Experiment Field near Rossville, KS. Soybeans were planted in 30-inch or 15-inch rows and a standard pre-emergent herbicide was applied. Planting dates were May 11 …
View article: Effect of Saltro Soybean Seed Treatment on Sudden Death Syndrome in Kansas in 2019
Effect of Saltro Soybean Seed Treatment on Sudden Death Syndrome in Kansas in 2019 Open
Sudden death syndrome (SDS) is a disease caused by the soilborne fungusFusarium virguliforme. This fungus prefers wet conditions and thus is usually most severe in irrigated fields. SDS tends to be most severe on well-managed soybeans with…
View article: Planting Date and Maturity Group Interaction for Soybean Productivity and Seed Quality in East Central Kansas
Planting Date and Maturity Group Interaction for Soybean Productivity and Seed Quality in East Central Kansas Open
Soybean seed quality is an important component for soybean meal. Different factors affect seed quality, such as genetics, environment, and management (G × E × M). The objectives of this study were to 1) evaluate the effect of planting date…
View article: Genotypic Variation on Root Growth and Nutrient Uptake in Corn and Soybean
Genotypic Variation on Root Growth and Nutrient Uptake in Corn and Soybean Open
Core Ideas Drought‐tolerant corn increased root length up to 33% over conventional corn. Differences in root growth among soybean genotypes were site‐specific. Nutrient dilution effect occurred in both corn shoot and root, but not in soybe…
View article: Influence of Soybean Planting Date on Sudden Death Syndrome and Soybean Yield
Influence of Soybean Planting Date on Sudden Death Syndrome and Soybean Yield Open
Sudden death syndrome (SDS) is a disease caused by the soilborne fungusFusarium virguliforme. This fungus prefers wet conditions and thus is usually most severe in irrigated fields. Sudden death syndrome tends to be most severe on well-ma…
View article: Effect of Late Planting Dates on Corn Yield
Effect of Late Planting Dates on Corn Yield Open
Planting date studies have been conducted for corn over many years. Often the focus has been to determine the optimum planting date for maximizing yield. In some areas, planting early-maturing corn hybrids as early as possible has been a s…
View article: Effect of Fungicides on Southern Rust of Corn
Effect of Fungicides on Southern Rust of Corn Open
The decision to apply fungicides to corn is not an easy decision in Kansas, especially when grain prices are low. Numerous factors determine what diseases are present, and whether the plants will be defoliated enough to reduce yield. Corre…
View article: Kansas Field Research 2018
Kansas Field Research 2018 Open
The research program at the Kansas State University East Central Kansas Experiment Field is designed to keep area crop producers abreast of technological advances in agronomic agriculture.
View article: Impact on Soybean Yield from Sudden Death Syndrome and Soybean Planting Date
Impact on Soybean Yield from Sudden Death Syndrome and Soybean Planting Date Open
Sudden Death Syndrome (SDS) is a disease caused by the soilborne fungusFusarium virguliforme. This fungus prefers wet conditions and thus is usually most severe in irrigated fields. SDS tends to be most severe on well-managed soybeans with…
View article: Field Station Weather Reports
Field Station Weather Reports Open
The research program at the Kansas State University East Central Kansas Experiment Field is designed to keep area crop producers abreast of technological advances in agronomic agriculture. Specific objectives are to (1) identify top perfor…
View article: Tillage Study for Corn and Soybeans: Comparing Vertical, Deep, and No-Tillage
Tillage Study for Corn and Soybeans: Comparing Vertical, Deep, and No-Tillage Open
Trends from a tillage study conducted since 2011 are beginning to show that corn yields are greater when there is an occasional deep tillage. The yield of soybeans have not been affected significantly by tillage systems ranging from no-til…
View article: Soybean Evaluation of Inoculation: A Three-Year Summary
Soybean Evaluation of Inoculation: A Three-Year Summary Open
The relationships between soybean (Glycine max) seed yield and response to nitrogen (N) fertilization have received considerable coverage in scientific literature. This project aims to quantify the response to inoculation for soybean in a …
View article: High Yielding Soybean: Genetic Gain and Nitrogen Limitation
High Yielding Soybean: Genetic Gain and Nitrogen Limitation Open
The United States and Argentina account for more than 50% of the global soybean production. Closing yield gaps (actual on-farm yield vs. genetic yield potential) would require an improvement in the use of the available resources. Overall, …
View article: Effects of Nitrogen in Soybean Seed Quality Definition During Seed-Filling Period
Effects of Nitrogen in Soybean Seed Quality Definition During Seed-Filling Period Open
During the seed filling period (SFP), parallel to the seed changes, translocation of assimilates and nutrients takes place from different plant organs to the seed in order to provide sufficient supply for the seed storage components (i.e.,…
View article: Benefits and Profitability of Fluopyram-Amended Seed Treatments for Suppressing Sudden Death Syndrome and Protecting Soybean Yield: A Meta-Analysis
Benefits and Profitability of Fluopyram-Amended Seed Treatments for Suppressing Sudden Death Syndrome and Protecting Soybean Yield: A Meta-Analysis Open
A meta-analytic approach was used to summarize data on the effects of fluopyram-amended seed treatment on sudden death syndrome (SDS) and yield of soybean (Glycine max L.) in over 200 field trials conducted in 12 U.S. states and Ontario, C…
View article: Timing of Strobilurin Fungicide for Control of Top Dieback in Corn
Timing of Strobilurin Fungicide for Control of Top Dieback in Corn Open
Significant yield losses can result from top dieback (TDB) in dent corn (Zea mays L.), which is caused by infection by the fungus Colletotrichum graminicola, which also causes anthracnose. Research on the effectiveness of fungicide applica…
View article: Sudden Death Syndrome and Soybean Planting Date
Sudden Death Syndrome and Soybean Planting Date Open
The effect of planting date on severity of sudden death syndrome (SDS) and yield was evaluated for the second year in two studies at the Kansas River Valley experiment fields in 2016. One study was established to promote SDS and the other …