• General Recommendations for Establishing a Permanent Vegetative Cover on Retired Farmland

      Thacker, Gary W.; Cox, Jerry R.; Ottman, Michael; Bantlin, Marguerite (College of Agriculture, University of Arizona (Tucson, AZ), 1990-09)
      A permanent vegetative cover should be established on farmland before retirement. After four years of research, we recommend 1. Work with the fanner while he is still on the land; 2 Furrow the land into 38 or 40 -inch beds; 3. Plant adapted species; and 4. Apply establishment irrigations.
    • Revegetation of Retired Farmland: Evaluation of Eight Range Grasses

      Thacker, Gary W.; Cox, Jerry R.; Ottman, Michael; Bantlin, Marguerite (College of Agriculture, University of Arizona (Tucson, AZ), 1990-09)
      In July of 1988, we planted eight range grass species on retired farmland in the Avra Valley west of Tucson. In November of 1989, Arabian yellow bluestem, kleingrass, buffelgrass, "Catalina" lovegrass, and bermudagrass all yielded over 1000 Kg /Ha of oven dry forage "Cochise" lovegrass yielded 889 Kg /Ha, sideoats grama grass yielded 126 Kg /Ha, and bottlebrush yielded 86 Kg /Ha.
    • Revegetation of Retired Farmland: Evaluation of Six Range Grasses Under Three Irrigation Regimes

      Thacker, Gary W.; Cox, Jerry R.; Ottman, Michael; Bantlin, Marguerite (College of Agriculture, University of Arizona (Tucson, AZ), 1990-09)
      In July of 1986 and 1987, we seeded bufelgrass, kleingrass, 'Catalina' lovegrass, "Cochise" lovegrass, bottlebrush, and sideoats grama grass on retired farmland in the Avra Valley west of Tucson. We seeded these grasses under three irrigation regimes: no establishment irrigation, two establishment irrigations, and four establishment irrigations. Establishment irrigations significantly increased the forage production of the grasses in the first two years of the 1986 planting and in the first year of the 1987 planting. Buffelgrass, kleingrass, and the lovegrasses appear to be promising species for vegetative cover on retired farmland.
    • Revegetation of Retired Farmland: Response of Fourwing Saltbush to Establishment Irrigation and Weeding

      Thacker, Gary W.; Ottman, Michael; Bantlin, Marguerite (College of Agriculture, University of Arizona (Tucson, AZ), 1990-09)
      This is an experiment on seeding fourwing saltbush (Atriplex canescens) in 80-inch wide waterharvesting microcatchments on retired farmland west of Tucson. At 32 months after planting plots that received the establishment irrigation had more cover than unirrigated plots. Keeping plots free of competing weeds also gave some advantage. However, the coefficient of variation was very high, and none of these differences was statistically significant.
    • Revegetation of Retired Farmland: Response of Range Grasses to Establishment Irrigations and Microcatchment Water Harvesting

      Thacker, Gary W.; Cox, Jerry R.; Ottman, Michael; Bantlin, Marguerite (College of Agriculture, University of Arizona (Tucson, AZ), 1990-09)
      In July 1987, we began an experiment to evaluate the effects of water harvesting and establishment irrigations on range grasses on retired farmland. In each of the two years since establishment, we have measured significantly higher forage production where we applied establishment irrigations. We have not detected any significant differences in forage production due to water harvesting treatments.