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1. Soil Carbon and Agroecosystem Benefits of Conservation Management and Perennial Bioenergy Crop ProductionConservation agricultural management practices and perennial bioenergy crops can increase soil organic C (SOC) stocks on marginal soils yet the time necessary to observe these benefits, as well as the upper limit of C storage isn’t known. Co-benefits often associated with SOC accumulation are positive effects on water and nutrient retention, soil microbial biomass and diversity and soil structure, resulting in better soil quality. However, interactions between nitrogen fertilizer, crop biochemistry,... C.E. Stewart, V.L. Jin, M.R. Schmer, R.B. Mitchell, C. Williams, G.L. Miner |
2. Soil Microbes Are Critical to Maintaining Soil Fertility in the Great PlainsSoil in the Great Plains is known to be susceptible to wind and water erosion due to moisture deficits throughout the region that limit soil organic matter (SOM) accumulation that helps form stable soil structure. Conservation management practices like reduced tillage are emphasized to maintain SOM that provides habitat for soil microbes to perform ecosystem services related to nutrient cycling and soil aggregation to increase resistance to erosion and maintain fertile topsoil. Soils under long-term... W. Roper, V. Acosta-martinez, J. Moore, M. Mikha, D.K. Manter, C.E. Stewart, R.M. Lehman, M.A. Liebig, V.L. Jin |
3. Effect of Seeding Rate on Annual Warm Season Forage Yield and Plant StructureDue to the decline of the Ogallala Aquifer and reduced irrigation capacity, there is growing interest in more water-efficient cropping systems in the semi-arid central Great Plains. To support the region’s livestock industry, there is increased interest in forages because they use water more efficiently than grain crops. However, there is insufficient information on summer annual forage seeding rates in the range of environments encountered in the region. The objective of this study was... J. Holman, N. Detter, A. Obour, P. Tamea |