• Cultural Practices for Karnal Bunt Control

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2002-07)
      The weather near heading is the overriding factor in disease development. Cultural practices may be partially effective in controlling Karnal bunt, but cannot eliminate the disease completely.
    • Fertilizing Small Grains in Arizona

      Ottman, Michael; Thompson, Tom; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006-03)
      Guidelines for nitrogen fertilization of small grains are presented using crop need, calendar dates, or tissue testing. Relationship between grain protein and nitrogen fertilization is presented. Phosphorus, potassium, and other nutrients are also discussed.
    • Irrigation of Small Grains in Arizona

      Ottman, Michael; Husman, Steve; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004-09)
      Water use, critical soil water depletion, and irrigation scheduling for wheat and barley are explained in this publication.
    • Minimum tillage for wheat following winter vegetables

      Nolte, Kurt; Ottman, Mike; Teegerstrom, Trent; Wang, Guangyao (Sam); Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010-08)
      In 2009, over 56,000 acres were planted to wheat in Arizona, all of which following either a lettuce or cotton crop. For wheat grown in the region, the conventional tillage sequence prior to planting can be tied to as many as seven field operations that consume valuable time, labor, and resources. In this study, our aim was to determine the effectiveness of reducing the number tillage (minimum till) operations in fields immediately following lettuce harvest. And demonstrate to Southwest wheat producers a means for conserving time, fuel, and resources. Growing wheat on lettuce beds immediately following lettuce harvest did not significantly reduce grain yield or quality. Although the regrowth of the previous crop can have significant implications for Durum grown with minimum tillage if not managed effectively, lodging was not a significant factor in this study as the degree of lodging was similar in both growing systems. The significant savings in fuel, labor and time, with no apparent reduction in Durum yield or quality, may be a significant benefit to wheat producers who incorporate minimum tillage practices following a lettuce crop.
    • Planting Dates for Small Grains in Arizona

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004-03)
      The optimum planting by elevation is presented for small grains in Arizona. The influence of planting date on crop development, grain yield and frost risk is discussed.
    • Planting Methods for Small Grains in Arizona

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004-03)
      Self seeding, planting equipment, planting into stubble, row spacing, bed vs flat planting, planting into moisture vs. irrigation up, and planting direction are discussed.
    • Recommendations for Growing Standard-Height Wheat Varieties in Arizona

      Ottman, Michael; Hought, Joy M.; School of Plant Sciences, University of Arizona; Native Seeds/Search (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2014-01)
      Until the introduction of semi-dwarf wheat in the late 1960s, wheat varieties were typically one and a half to two times their current height. Most heirloom, traditional, or landrace varieties are considered standard-height wheat (e.g. Sonoran white); in general they are adapted to lower-input conditions, and cannot tolerate high-fertility environments without lodging. Lodging reduces grain yield, delays harvest, and increases harvesting costs. Standard-height wheat needs to be grown at a lower plant density and with less nitrogen and irrigation water than semi-dwarfs in order to prevent lodging, optimize yield, and make the most efficient use of resources.
    • Seeding Rates for Small Grains in Arizona

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004-03)
      The influence of crop species, seed size, seed viability, seed depth,irrigation practices,stand establishment and uniformity, seeding equipment, planting date, crop variety, and planting configuration on optimum seeding rate for small grains is discussed.
    • Small Grain Growth and Development

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004-09)
      Growing degree days to reach various growth stages in small grains is presented in this publication, as well as the optimum timing of cultural practices relative to crop growth stage.
    • Small Grains Variety Evaluation at Maricopa, 2016

      Ottman, Michael J; Sheedy, Michael D; Ward, Richard W (College of Agriculture, University of Arizona (Tucson, AZ), 2016-11)
      Small grain varieties are evaluated each year by University of Arizona personnel. The purpose of these tests is to characterize varieties in terms of yield and other attributes. Variety performance varies greatly from year to year and several site-years are necessary to adequately characterize the yield potential of a variety. A summary of small grain variety trials conducted by the University of Arizona can be found online at https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1265-2015.pdf.
    • Weed Control for Wheat and Barley in the Low Deserts of Arizona

      Ottman, Michael; Tickes, Barry; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2008-04)
      Weeds can be a problem in wheat and barley especially where crop rotation is not practiced. An integrated approach to weed management can be followed. Chemical treatments are important tools in weed management to maintain yield and quality and prevent proliferation of weeds that could affect future crops.
    • Wheat and Barley Varieties for Arizona 2010

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010-10)
    • Wheat and Barley Varieties for Arizona 2011

      Ottman, Michael J. (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2011-10)
    • Wheat and Barley Varieties for Arizona 2012

      Ottman, Michael J. (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2012-12)
    • Wheat and Barley Varieties for Arizona 2013

      Ottman, Michael J.; Plant Sciences (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013-11)
    • Winter Cereal Forage Variety Evaluation at Maricopa, 2016

      Ottman, Michael J; Sheedy, Michael D; Ward, Richard W (College of Agriculture, University of Arizona (Tucson, AZ), 2016-11)
      Winter cereals such as barley, oats, triticale, and wheat are commonly grown as forage for the dairy industry. The purpose of this study is to generate information on yield potential of various winter cereal forage varieties. A trial testing the yield potential of eleven winter cereal forage entries including barley, oat, triticale, and wheat varieties was established at the Maricopa Ag Center on October 16, 2015. Forage yields were obtained at cuttings on December 10, February 29, and April 18. The highest yielding entry at the first cutting was Stockford barley. At the second and third cuttings, the highest yielding entry was Summit 515 wheat. Summit 515 wheat was also the highest yielding entry averaged over all cuttings. As a group, the wheat entries were higher yielding that the other winter cereals except at the first cutting where the barleys were higher yielding.