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1. Effects of Residue Placement on Co2 Loss in an Irrigated, No-till Corn SystemIt is well known that residue management practices that leave crop residue on the surface, such as no-till agriculture, promote soil fertility. However, the effects of such practices on carbon sequestration can be highly variable. To better understand how residue management impacts the loss of carbon through mineralization, we investigated the effects of residue location and addition on CO2 produced from residue decomposition under no-till irrigated continuous corn in Northern Colorado. Over... H. Oleszak, F. Cotrufo, S. Leichty, C. Stewart |
2. Evaluation of Cation Exchange Resin As Indicator of In-season Potassium Supply to SoybeanThe use of ion-exchange resins to measure soil nutrient availability has potential applications for fertilizer recommendations. The objective of this study was to evaluate the relationship between potassium (K) adsorption by cation exchange resins (CER) and K uptake by soybean (Glycine max) in field conditions. The study was conducted at two locations in Kansas during 2019. Two treatments were selected to evaluate the CER. Treatments included a check (0 lbs K2O acre-1) and a high K rate... D. Charbonnier, D. Ruiz diaz |
3. Assessing Corn Response to Cover Crops and Nitrogen Fertilization in a No –Till, Three-year Rotation in Northeast KansasAs industry initiatives and government programs begin funding and incentivizing climate-smart agricultural practices, more farmers in the great plains region may be interested in incorporating cover crops into their rotations. Annual yield data can aid in understanding how cover crops impact cash crop productivity in this region. A long-term cover crop experiment in northeast Kansas was established in 2007 based on a wheat – corn – soybean rotation to determinate the... A. Correira, J. Grunberg, P. Tomlinson, K. Roozeboom, D. Presley |