• 2003 Cooperative dry bean nursery

      Clark, Lee J.; Ellsworth, Keller F.; Norton, Eric R.; Ottman, Michael J. (College of Agriculture, University of Arizona (Tucson, AZ), 2004-10)
      This report contains the results of the 2003 National Cooperative Dry Bean Nursery Trials grown at two different sites in southeastern Arizona. These replicated, small plot trials contained twenty-eight varieties from ten different classes of beans. Bill-Z, a pinto variety, was the highest yielding variety in the Terry Brother=s trial with a yield over 3800 pounds per acre. K124467, a Flor de Mayo variety from Archer-Daniels-Midland, was the highest yielding variety in the Haas trial with a yield just under 2900 pounds per acre. Yields, aerial biomass, harvest index, and 100 bean weights are reported for all varieties in both studies.
    • Alfalfa variety trial in Graham County Arizona, 2003

      Clark, Lee J.; Ellsworth, Keller F.; Ottman, Michael J. (College of Agriculture, University of Arizona (Tucson, AZ), 2004-10)
      Thirteen alfalfa varieties with fall dormancy ratings of 7 - 9 were tested in a replicated small plot trial on a clay loam soil on the Safford Agricultural Center. This was the first year of the study. Beacon was the highest yielding variety in 2003 with ZX 9899B and AmeriStand 801S following closely behind. All three varieties produced a yield over 9 tons per acre.
    • Durum wheat response to nitrogen fertilization at Safford Agricultural Center, 2004

      Clark, Lee J.; Ellsworth, Keller F.; Ottman, Michael J. (College of Agriculture, University of Arizona (Tucson, AZ), 2004-10)
      This study was initiated in 2003 in response to a push by one of the grain buying companies to produce more durum wheat for export from Arizona. The export market required a minimum of 13% protein and other quality constraints. A nitrogen timing regime was established by the University to provide the crop with this nutrient according to its physiological development. This study had four nitrogen application treatments addressing different ways to provide the crop with its nitrogen needs. This second year of the study showed statistically different yields from the treatments applied and different inferences from the first year of the study. An economic analysis is included to show the profitability of nitrogen applications for this year and an economic summary for the last four years of nitrogen studies on durum wheat.
    • Irrigation scheduling on small grains using AZSCHED for Windows - Safford Agricultural Center, 2004

      Clark, Lee J.; Ellsworth, Keller F.; Ottman, Michael J. (College of Agriculture, University of Arizona (Tucson, AZ), 2004-10)
      The AZSCHED irrigation scheduling software was developed in the early 1990's to be used in a DOS environment on computers (1) and has been used extensively for irrigation scheduling on the Safford Agricultural Center since its development. The new Windows version of AZSCHED (2) was first tested for barley and wheat in 2003. This is a follow-up verification to the first test using a wider range of irrigation depletion levels.
    • Small Grain Variety Trials, Safford Agricultural Center, 2004

      Clark, Lee J.; Ellsworth, Keller F.; Ottman, Michael J. (College of Agriculture, University of Arizona (Tucson, AZ), 2004-10)
      Small plot replicate trials were established to test fifteen durum wheat varieties and thirteen varieties of barley (including six malting varieties from Colorado). Duraking from World Wide Wheat was the leading durum wheat variety with a yield just over two tons per acre. Max barley variety from World Wide Wheat was the highest yielding barley variety with a yield over two and three quarters tons per acre. A multi-year summary is also provided in this paper.