Annual Report For 2000

W128

I. State or Agency: Department of Agronomy and Horticulture, Agricultural Experiment Station, New Mexico State University, Las Cruces, NM 88003.

II. Principal Leaders: T.W. Sammis

III. Progress of Work and Principal Accomplishment

The home page for W128 was expanded and a news letter written and posted on the internet. A spread sheet was written that uses I. P. Wu optimal solution for water application based on the cost of water and the cost of remediate an  pollution passing below the root zone. 

IV. Usefulness of Findings: The Economic calculator can determine the optimal economic level to operate an micro-irrigation system over the growing season. It can also show the cost of loading nitrogen below the root zone. The news letter was to advertise how W128  contributes to the knowledge of micro-irrigation. It needs to be distributed to be  affective.

V. Work Planned for Next Year:

Continue to put information on the W128 home page with links to tools developed by the W128 research group. Develop a drip irrigation scheduling  model in excel that is easy to use and uses Samani's method of calculating reference potential evapotranspiration which uses only temperature data.

VI. Publications Issued or Manuscripts Approved:

M.S. Al-Jamal, T.W. Sammis*, S. Ball, D. Smeal. Yield-Based irrigated Onion Crop Coefficients. 1999 ASAE Applied Engineering in Agriculture Vol 15 (6): pp659-668

Sammis, T. W and J. G. Mexal. 2000 Irrigation water management to sustain agriculture in the desert. New Mexico Academy of Science Journal Vol. 39 p301-310

Joe Corgan, M. .Wall, C. Crammer, T. Sammis, B. Lewis, J. Schroeder. 2000. Bulb Onion culture and management. NMSU cooperative extension circular 563 p1-16