Western Kansas Agricultural Research Centers
Soil Science
Augustine Obour, Soil Scientist
Program Description
The overall goal of the Soils Program at Hays is to identify and develop soil management and agronomic production practices which protect soil, water, and air resources while sustaining crop yields and maintaining soil and environmental quality. To achieve this goal, the Program strongly relies on basic and applied research principles. The program approach is based on the concept of multi-functionality in which soils are managed to provide a number of ecosystem services, including: 1) conserve and store water, 2) meet the increasing demands for food and fiber production, 3) filter and purify air and water, 4) store urban and industrial wastes, 5) sequester carbon (C) to offset the anthropogenic emissions of greenhouse gases (CO2, CH4, and NO2) that contribute to projected global climate change, and 6) sustain wildlife habitat.
The emphasis of the Program is to develop efficient soil and nutrient management cropping systems for western Kansas. Specific  research efforts are focused on 1) investigating soil fertility and nutrient management issues in dryland (water-limited) cropping systems , 2) investigate the interaction among tillage, cropping sequence and nutrient management and evaluate their impacts on crop productivity, nutrient cycling, C sequestration  and overall soil health, and 3) develop oilseed and bioenergy feedstock production recommendations for western Kansas.
Current Projects
10/20/14 - Augustine Obour recently was interviewed by Jennifer Ryan of Dryland No-Tiller E-Magazine. The article appeared in their mid-October issue. See the link to the article below:
04/14/14 - Augustine Obour joins the Agriculture Today program and discussing his soil and cropping system research, (Audio File).

Augustine Obour
Soil Scientist
Agricultural Research Center - Hays
785-625-3425 x 215





Walsh, M.J., R.W. Groose, A.K. Obour, D.A. Claypool, R.H. Delaney and J.M. Krall.  2013. Seed persistence in soil of five medic cultivars in southeastern Wyoming, USA. Crop Sci.53:674-678.
Islam, M.A., A.K. Obour, J.M. Krall, J.T. Cecil, and J.J. Nachtman. 2013. Performance of turfgrass under supplemental irrigation and rain-fed conditions in the Central Great Plains of USA. Grassland Sci. 59:111-119.
Islam, M.A., A.K. Obour, M.C. Saha, J.J. Nachtman, and R.E. Baumgartner. 2013. Small grains have forage production potential and nutritive value in Central High Plains of Wyoming. Forage and Grazinglands. doi:10.1094/FG-2013-0121-02-RS.
Islam, M.A., A.K. Obour, M.C. Saha, J.J. Nachtman, W.K. Cecil, and R.E. Baumgartner. 2013. Grain yield, forage yield, and nutritive value of dual-purpose small grains in the Central High Plains of USA. Crop Management. doi:10.1094/CM-2012-0154-RS.
Agyin-Birikorang, S., Y.C. Newman, A.K. Obour, and G.N. Kasozi. 2012. Agro-ecological nitrogen management in soils vulnerable to nitrate leaching: a case study in the lower Suwannee watershed. Nutr. Cycl. Agroecosyst. 92: 91-105.
Silveira, M.L., A.K. Obour, J.M. Vendramini, and L.E. Sollenberger. 2011. Using tissue analysis as a tool to predict bahiagrass phosphorus fertilization requirement. J. Plant Nutr. 34:2193-2205.
Obour, A.K., M.L. Silveira, J.M.B. Vendramini, L.E. Sollenberger, G.A. O’Connor, and J.W. Jawitz, 2011. Agronomic and environmental impacts of phosphorus fertilization of low input bahiagrass systems in Florida. Nutr. Cycl. Agroecosyst. 89:281-290.
Obour, A.K., J.M.B. Vendramini, M.L. Silveira, L.E. Sollenberger, G.A. O'Connor, and J. Jawitz. 2011. Phosphorus fertilization responses on bahiagrass pastures: forage production and water quality. Agron. J. 103:324-330.
Silveira, M.L., A .K. Obour, J. Arthington, and L.E. Sollenberger. 2011. The cow-calf industry and water quality in South Florida, USA: a review. Nutr. Cycl. Agroecosyst. 89:439-452.
Obour, A.K., M.L. Silveira, J.M.B.Vendramini, J. Jawitz, G.A. O’Connor and L.E. Sollenberger. 2011. A Phosphorus budget for bahiagrass pastures growing on a typical Florida spodosol. Agron. J. 103:611-616.
Obour, A.K., M.L. Silveira, J.M.B. Vendramini, L.E. Sollenberger, andG.A.O'Connor.2011.Fluctuating water table effect on phosphorus release and availability from a Floridaspodosol. Nutr. Cycl. Agroecosyst. 91:207-217.
Obour, A.K., M.L. Silveira, J.M.B. Vendramini, M.B. Adjei, and L.E. Sollenberger. 2010.Evaluating cattle manure application strategies on phosphorus and nitrogen losses from a Florida spodosol. Agron. J. 102:1511-1521.
Obour, A.K., M. L. Silveira, M.B. Adjei, J. M. Vendramini and J. E. Rechcigl. 2009. Cattle manure application strategies effects on bahiagrass yield, nutritive value, and phosphorus recovery. Agron. J. 101:1099-1107.
Akromah, R., S.Y.C. Essah and A.K. Obour. 2009. Reaction of local and improved cassava germplasm to the African cassava mosaic virus disease. Crop Res. 38:219-223.