• Evaluation of Nitrogen Fertilization Practices for Surface-Irrigated Lemon Trees - 2012

      Wright, Glenn C; Department of Plant Sciences, University of Arizona; Yuma Agriculture Center, Yuma, AZ (College of Agriculture, University of Arizona (Tucson, AZ), 2015-02)
      Lisbon lemons were treated with N levels ranging from 0.5 to 3.0 lbs. N per tree annually. Fourth–season yield results from the trial show significant effects of the treatments upon overall yield and leaf N concentrations, but no effect upon fruit packout. Treatments did lead to a significant effect upon leaf nutrient concentration. Total cumulative yields from 2008 to 2012 (not including the freeze-affected 2011-12 season) were significantly affected by the treatments. Trees treated annually with 2.0 lbs N had the greatest yield, which represented a 12% increase over the yield of trees treated with just 0.5 lbs. N annually.
    • Evaluation of Palisade as a Plant Growth Regulator in Durum, 2016

      Ottman, Michael J; Sheedy, Michael D; Ward, Richard W (College of Agriculture, University of Arizona (Tucson, AZ), 2016-11)
      Lodging has historically been a problem in small grain production. Palisade is a relatively new plant growth regulator that has shown some promise in reducing lodging. The effect of Palisade on height and lodging of durum, and subsequent yield was tested in a study at the Maricopa Ag Center. Plant height was not affected by Palisade since the chemical was applied at boot, one stage past the recommended window where the plant was near maximum height. Lodging was reduced from 83 to 61% and 28 to 8% under the high and medium input growing conditions, respectively. Grain yield was increased from 4481 to 6152 lb/acre and 5600 to 7330 lb/acre under high and medium input growing conditions, respectively. Palisade is effective in reducing but not eliminating lodging, and can have a large impact on yield as in this study.
    • Factors Contributing to Development of Salinity Problems in Turf

      Brown, Paul; Walworth, Jim; Soil, Water & Enviromental Science (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010-08)
      The bulletin reviews the factors contributing to the development of salinity and sodium problems in desert turfgrass systems. Key factors include water restrictions, poor water quality, irrigation management, drought and poor soil structure.
    • Fertilizer Recommendations for Arizona

      Ray, Howard E. (College of Agriculture, University of Arizona (Tucson, AZ), 1954-10)
    • Fertilizer Recommendations for Arizona, 1953

      Ray, Howard E. (College of Agriculture, University of Arizona (Tucson, AZ), 1952-12)
    • Fertilizer Recommendations for Arizona, 1954

      Ray, Howard E. (College of Agriculture, University of Arizona (Tucson, AZ), 1953-12)
    • Fertilizers for Arizona Soils

      McGeorge, W. T. (College of Agriculture, University of Arizona (Tucson, AZ), 1933-10)
    • 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.
    • Field Crop Varieties for Arizona

      College of Agriculture, University of Arizona (Tucson, AZ), 1965-03
    • Field Crop Varieties for Arizona, 1960

      College of Agriculture, University of Arizona (Tucson, AZ), 1960-02
    • Field Crop Varieties for Arizona, 1961

      College of Agriculture, University of Arizona (Tucson, AZ), 1961-01
    • Fire Blight

      Olsen, Mary W.; Young, Deborah; Plant Pathology (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2011-01)
      Fireblight is a bacterial disease that affects only plants in the rose family, particularly apple, pear and pyracantha. This article briefly discusses the symptoms and environmental conditions for this disease and the way to control it.
    • Fitting Cropping Systems to Water Supplies in Central Arizona

      Hobart, Charles; Harris, Karl (College of Agriculture, University of Arizona (Tucson, AZ), 1946-04)
    • Forage Sorghum Hybrid Yield and Quality at Maricopa, AZ, 2015

      Ottman, Michael J; Diaz, Duarte E; Sheedy, Michael D; Ward, Richard W (College of Agriculture, University of Arizona (Tucson, AZ), 2017-02)
      Forage sorghum is commonly grown in Arizona for silage for dairy cattle and is valued for its lower nitrogen fertilizer and water requirements compared to corn. Five forage sorghum hybrids were evaluated in a study conducted at the Maricopa Agricultural Center in 2015. The hybrids tested did not differ in yield or overall feeding quality (TDN, total digestible nutrients) although some differences in heading, plant height, moisture content, and some specific quality parameters were detected.
    • General Maturity Groups for Cotton Varieties

      Silvertooth, Jeffrey C. (College of Agriculture, University of Arizona (Tucson, AZ), 2015-06)
      Three maturity groupings are often used to classify cotton varieties, consisting of: 1) short season or more determinate plants, 2) medium season varieties, and 3) long or full season varieties which are more indeterminate in nature. Classification of cotton varieties into one of these three categories is not necessarily straightforward in all cases. In fact, it easily can become a process of “splitting hairs” when making maturity grouping designations for cotton varieties. Nevertheless, maturity designations are commonly assigned to most commercially available varieties, which can effect selection and management.
    • Grafting and Budding Fruit and Nut Trees

      Tate, Harvey F. (College of Agriculture, University of Arizona (Tucson, AZ), 1939-07)
    • Grapefruit in Maricopa County: Response of Young Trees to Environment and Practices

      Barr, George W.; Hess, Reuben M.; O'Dell, J. H. (College of Agriculture, University of Arizona (Tucson, AZ), 1933-04)
    • Green Feeds and Green Feed Substitutes for Arizona Poultry

      Rowe, Clyde F. (College of Agriculture, University of Arizona (Tucson, AZ), 1935-06)
    • Growing Alfalfa for Seed in Arizona

      Husman, Stephen H; Ottman, Michael J (College of Agriculture, University of Arizona (Tucson, AZ), 2015-04)
      Seed production for profitability is challenging. Cultural practices differ from those commonly used in forage production. This article outlines management recommendations that may help to accomplish profitable seed alfalfa yields.
    • Growing Alfalfa Seed in Arizona

      Ottman, Michael; Plant Sciences, School of (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1999-07)
      Due to worldwide shortages of non-dormant alfalfa seed, production opportunities and acreage have increased recently in Central Arizona. Seed production for profitability is challenging. Cultural practices differ from those commonly used in forage production. This article outlines management recommendations that may help to accomplish profitable seed alfalfa yields.