RESEARCH INTERESTS:

• Waste management i.e. manure, sludge and other agricultural and industrial by-products amendments to soil, organic N and P mineralization.
• Soil acidity and liming
• Effect of tillage on soil properties
• International agriculture

COURSES TAUGHT:

• AGRO/SOIL/HORT 153 Soil Resources
• AGRO/SOIL 366 Soil Nutrient Relationships

MAJOR PROJECT ACTIVITIES:

Research

• Quantifying effect of soil acidity (surface and subsurface) on nutrient (P) uptake, soil chemistry, and mycorrhizal-crop relationships.
• USAID-INTSORMIL: Soil and water management for sorghum production in Eastern Africa; starter fertilizer effect on sorghum; P management.
• Quantifying soil management effects on water quality.

Teaching

• Design supplemental online lessons to enhance basic and practical understanding of macro- and micro- scale soil processes to undergraduate audience.
• Evaluate the impact of online lessons on student learning
• A multidisciplinary and multi-institutional Soil Science Education Project-Phase I:
  M. Mamo, T. Kettler, J. Ippollito, and D. McCallister. Broadening Soil Science Education Through On-Line Lessons. Funded by the National Science Foundation (NSF) DUE-CCLI.

SELECTED PUBLICATIONS:

• Wortmann, C, S. Xerinda, M. Mamo, and C. Shapiro. 2005. No-till row crop response to starter fertilizer in eastern nebraska: I. Irrigated and rainfed corn. Agronomy J. (in review).
  
  
• Mamo, M., D. Ginting, W. Zanner, D. McCallister, R. Renken, C. Shapiro, and B. Eghball. 2005. Stratification of soil phosphorus and increased potential for runoff loss after long-term manure application. J. Soil and Water Conservation. (in press).
  
  
• Mamo, M., S.C. Gupta, C.J. Rosen, U.B. Singh. 2005. Phosphorus leaching at cold temperatures as affected by wastewater application and soil phosphorus levels. J. Environ. Qual. 34: 1243-1250.
  
  
• Mamo, M., T.A. Kettler, and D. Husmann. 2005. Learning style responses to an on-line soil erosion lesson. J. Nat. Resour. Life Sci. Educ. 34: 44-48.
  
  
• Mamo, M., T.A. Kettler, D. Husmann, and D. McCallister. 2004. Assessment of interactive computer modules and student learning in introductory soil science. NACTA J. 48: 47-52
  
  
• Mamo, M., D. Ginting, R. Renken, B. Egbhall. 2004. Stability of Ion Exchange Resin Under Freeze-Thaw or Dry-Wet Environment. Soil Sci. Soc. Am. 68: 677-681.
  
  
• Mamo, M., G.L. Malzer, D.J. Mulla, D.J. Huggins, and J. Strock. 2003. Spatial and temporal variation in economically optimum N rate for corn. Agronomy Journal. 95: 958-964.
  
  
• Wortmann, C., M. Mamo, and S. Shapiro. 2003. Management Strategies to Reduce the Rate of Soil Acidification. NebGuide G03-1503-A. University of Nebraska Cooperative Extension, Lincoln, NE.
  
  
• Mamo, M., C. Wortmann, C. Shapiro. 2003. Lime use for soil acidity management. NebGuide G03-1504-A. University of Nebraska Cooperative Extension, Lincoln, NE.
  
  
• Mamo, M., J.F. Moncrief, C.J. Rosen, and T.R. Halbach. 2000. The effect of municipal solid waste compost application on soil water and water stress in corn. J. Compost Science and Utilization 8: 236-246.
  
  
• Mamo, M., C.J. Rosen, and T.R. Halbach. 1999. Nitrogen availability and leaching from soil amended with Municipal solid waste compost. J. Environ. Qual. 28: 1074-1082.
  
  
• Mamo, M., J.A.E. Molina, C.J. Rosen, and T.R. Halbach. 1999. Nitrogen and carbon mineralization in soil amended with municipal solid waste compost. Can. J. Soil Sci. 79: 535-542.
  
  
• Mamo, M., C.J. Rosen, T.R. Halbach, and J.F. Moncrief. 1998. Corn yield, nitrogen uptake, and nitrate leaching in soil amended with municipal solid waste compost. J. Prod. Agr. 11: 469-475.

PROFESSIONAL MEMBERSHIPS:

ASA , SSSA, Sigma Xi