Location: Northwest Irrigation and Soils Research
2012 Annual Report
Subobjective 1.1. Identify effects of fertilizer source, and nitrification and urease inhibitors on ammonia and greenhouse gas emissions from soils under irrigation.
Subobjective 1.2. Identify effects of fertilizer source, and nitrification and urease inhibitors on carbon, nitrogen, and phosphorus cycling and losses from soils under irrigation.
Subobjective 1.3. Identify effects of fertilizer source, and nitrification and urease inhibitors on crop nutrient removal from soils under irrigation.
Objective 2. Develop utilization practices for agricultural byproducts to increase nutrient and water use efficiency. (Lentz 0.5, Lehrsch 0.4, Ippolito 0.1).
Subobjective 2.1. Identify effects of biochar and other amendments on soil carbon, nitrogen, and micronutrient budgets and water availability over time.
Subobjective 2.2. Identify the effects of agricultural byproducts and soil water content on the emissions of carbon dioxide and nitrous oxide gases from freezing and thawing soils.
Objective 1: Study initiation was delayed until the fall of 2012 because a vital piece of equipment (gas chromatograph) was not available by the original start date.
Objective 2a: A five-year biochar field research site was established and continues to be monitored for greenhouse gas emissions and nitrogen cycling. Two laboratory incubation microcosms were also established to monitor changes in nitrogen, micronutrients and soil water quantity. A study that improves sugarbeet utilization of mineralized nitrogen from dairy manure was published and data describing the fate of soil carbon in furrow-irrigated, manure-amended soils cropped to corn was summarized.
Objective 2b: Preliminary investigations were conducted to measure changes in aggregate stability and soil gas emissions as frozen soil thaws. Freeze-thaw cycles caused soil water to redistribute and altered the near-surface aggregate stability of wet soil. Moreover, compared to ambient conditions, carbon dioxide emissions increased by a third and nitrous oxide emissions increased by a factor of eight, each peaking 24 to 26 hours after thawing began.
Bartelt-Hunt, S.L., Snow, D.D., Kranz, W.L., Mader, T.L., Shapiro, C.A., Van Donk, S.J., Shelton, D.P., Tarkalson, D.D., Zhang, T.C. 2012. Effect of growth promotants on the occurrence of endogenous and synthetic steroid hormones on feedlot soils and in runoff from beef cattle feeding operations. Journal of Environmental Science and Technology. 46:1352-1360. Lentz, R.D., Ippolito, J.A. 2012. Biochar and manure affects calcareous soil and corn silage nutrient concentrations and uptake. Journal of Environmental Quality. 41(4): 1033-1043 DOI: 10.2134/jeq2011.0126. Lentz, R.D., Lehrsch, G.A. 2012. Nitrogen availability and uptake by sugarbeet in years following manure application. International Journal of Agronomy. DOI:10.1155/2012/120429. Tarkalson, D.D., King, B.A., Bjorneberg, D.L., Taberna, J.P. 2012. Effects of planting configuration and in-row plant spacing on photosynthetic active radiation interception for three irrigated potato cultivars. Potato Research. 55:41-58. DOI:http://dx.doi.org/10.1007/s11540-011-9205-2. Van Donk, S.J., Lindgren, D.T., Schaaf, D.M., Peterson, J.L., Tarkalson, D.D. 2012. Wood chip mulch thickness effects on soil water, soil temperature, weed growth, and landscape plant growth. Journal of Applied Horticulture. 13(2): 91-95. Tarkalson, D.D., Ippolito, J.A. 2011. Clinoptilolite zeolite influence on nitrogen in a manure-amended sandy agricultural soil. Communications in Soil Science and Plant Analysis. 42(19):2370-2378. DOI: 10.1080/00103624.2011.605495. Ippolito, J.A., Novak, J.M., Busscher, W.J., Ahmedna, M., Rehrah, D., Watts, D.W. 2012. Switchgrass biochar effects two aridisols. Journal of Environmental Quality. 41(4): 1123-1130. Ippolito, J.A., Laird, D.A., Busscher, W.J. 2012. Environmental benefits of biochar. Journal of Environmental Quality. 41(4):967-972. Meiman, P., Davis, N., Brummer, J., Ippolito, J.A. 2012. Riparian shrub metal concentrations and growth in amended fluvial mine tailings. Water, Air, and Soil Pollution. 223(4):1815-1828. Blecker, S., Stillings, L., Mcamacher, M., Ippolito, J.A., Decrappeo, N. 2012. Development of vegetation based soil quality indices for mineralized terrane in arid and semi-arid ecosystems. Journal of Ecological Indicators. 20:65-74. Lentz, R.D., Lehrsch, G.A. 2010. Nutrients in runoff from a furrow-irrigated field after incorporating inorganic fertilizer or manure. Journal of Environmental Quality. 39:1402-1415(2010).