Skip Navigation

University of Nebraska–Lincoln

Agronomy and Horticulture

The Science and Application of Plants to Sustain and Enhance Human Life

Timothy A. Kettler

Assistant Professor of Practice
Soil Science

Contact Information
(click on Back button in browser to return to this page)

DEGREES:

  • B.S., Physical Science Education, University of Nebraska-Lincoln, 1986
  • M.S., Soil and Water Science (Agronomy), University of Nebraska-Lincoln, 1998
kettlerb.jpg

COURSES TAUGHT:

  • AGRO/HORT/SOIL 153, Fall and Spring Semesters annually
  • AGRI/NRES 103 Recitation, Fall Semesters

RESEARCH INTERESTS:

My research interests are:

  1. Assessment of teaching method and student learning in teacher-centered, student-centered, and computer-delivered courses.
  2. The Assessment of Soil Quality and Health, and development of simple soil test methodologies useful to producers and lay people.

MAJOR PROJECT ACTIVITIES:

  • Coordinator for Nebraska State FFA, 'Agronomic Resources' Career Development Event, held the first week of April, annually.
  • Creation of a series of on-line, interactive learning modules to be utilized in the field of Soil Science Distance Education.

EXTENSION INTERESTS:

Participated in creation of the USDA Soil Quality Test Kit. This kit is useful for on-site soil quality analyses and currently is in use all over the world.

SELECTED PUBLICATIONS:

  • 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.

  • Kettler, T.A, M. Mamo, D. Husmann, and D. McCallister. 2002. Assessment of an interactive computer module and student learning in introductory soil science. In 2002 Agronomy Abstracts. ASA Madison, WI.

  • Kettler, T.A., J.W. Doran, and T.L. Gilbert. 2001. A simplified method for soil particle size determination to accompany soil quality analyses. Soil Sci. Soc. Am. J. 65:000-000. (May-June 2001)

  • Gajda, A.M., J.W. Doran, T.A. Kettler, B.J. Wienhold, J.L. Pikul, Jr., and C.A. Cambardella. 2001. Soil quality evaluations of alternative and conventional management systems in the Great Plains. p. 381-400. In: R. Lal, J.M. Kimble, R.F. Follett and B.A. Stewart (eds.), Assessment Methods for Soil Carbon. Lewis Publishers, Boca Raton, FL.

  • Cambardella, C.A., A.M. Gajda, J.W. Doran, B.J. Wienhold, and T.A. Kettler. 2001. Estimation of particulate and total organic matter by weight loss-on-ignition. p. 349-359. In: R. Lal, J.M. Kimble, R.F. Follett and B.A. Stewart (eds.), Assessment Methods for Soil Carbon. Lewis Publishers, Boca Raton, FL.

  • Kettler, T.A., J.W. Doran, D.J. Lyon, W.L. Powers, and W.W. Stroup. 2000. Soil Quality Assessment After Weed Control Tillage in a No-Till Wheat-Fallow Cropping System. Soil Sci. Soc. Am. J. 64:339-346.

  • Stamatiadis, S., J.W. Doran, and T.A. Kettler. 1999. Field and laboratory evaluation of soil quality changes resulting from injection of liquid sewage sludge. App. Soil Ecol. 12:263-272.

  • Kettler, T.A. 1998. Soil quality as influenced by intermittent plowing in conservation tillage wheat-fallow systems. M.S. thesis. Univ. of Nebraska, Lincoln, NE 68583.

  • Kesavalou, A., J.W. Doran, W.L. Powers, T.A. Kettler, and J.H. Qian. 1996. Bromide and 15N tracers of nitrate leaching under irrigated corn in central Nebraska. J. Environ. Qual. 25:1008-1014.