Now showing items 1-20 of 17852

    • Soil Health: Organic and Inorganic Industrial Fertilizers Impact of Crop and Soil Health

      Silvertooth, Jeffrey C.; University of Arizona (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-12-09)
      This article, published in the VegIPM Newsletter (Vol. 16, No. 25), compares organic and inorganic fertilizers and their effects on soil health. Silvertooth explains how each contributes differently to soil structure, biology, and nutrient delivery, emphasizing the value of integrating both in desert crop systems.
    • The Journey Toward Implementing Trauma-Informed Practices to Support Patrons and Staff in an Academic Library Setting

      Lema, Dana V.; Bones, Bethany; Franz-Harder, Alexandra; Huff-Eibl, Robyn; Mody, Nisha; Perry, Gerald J.; Senseney, Megan; University of Arizona Libraries (Emerald Publishing Limited, 2025-02-10)
      The University of Arizona Libraries (UAL) has engaged in learning and applying trauma-informed concepts since 2020. These efforts followed conversations about how to compassionately uphold the libraries' Code of Conduct (CoC). Conversations occurred against the backdrop of the global COVID-19 pandemic, a national racial reckoning following the murder of George Floyd and a series of local incidents including border control, racial aggression, insecure access to basic needs and mental health services, and the recent on-campus homicide of a faculty member. In response, the library's Diversity, Social Justice, and Equity Council (DSJEC) began working to identify resources for trauma-informed services and leadership. UAL has interrogated the ways in which the CoC serves both as a response to expressions of trauma and a potential perpetuating source of trauma for patrons and staff. Moreover, many staff members have experienced trauma that occurred either within or outside the workplace that affects their work experience. UAL contracted with relational healing and life coach Nisha Mody to deliver a series of webinars introducing trauma-informed concepts and connecting them to academic library work. A result of trauma-informed training was a deeper knowledge of trauma-informed principles and their connection to systemic inequity and power. For this reason, UAL and other academic libraries may encounter challenges when applying trauma-informed practices within the administrative and cultural context of higher education.
    • Geologic Map of the Safford 30' x 60' Quadrangle, Graham and Greenlee Counties, Arizona, Grant and Hidalgo Counties, New Mexico

      Pearthree, Philip A.; Mako, Calvin A.; Gootee, Brian F.; Wilson, Tawnya C.; Youberg, Ann; Richardson, Carson A.; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Map of Potential Aggregate Resources in the Tucson – Nogales Area, Pima and Santa Cruz Counties, Arizona

      Pearthree, Philip A.; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Geologic Map of Surficial and Basin Deposits of the Upper Santa Cruz Valley, Southeastern Arizona

      Pearthree, Philip A.; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Geologic Map of the Rattlesnake Hill 7.5' Quadrangle, Mohave County, Arizona

      Kwiatkowski, Chad; Blackford, Nolan; Ma, Chong; Mako, Calvin; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Geologic Map of the Hualapai Spring 7.5' Quadrangle, Mohave County, Arizona

      Ma, Chong; Kwiatkowski, Chad; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Geologic Map of the Cerbat 7.5’ Quadrangle, Mohave County, Arizona v. 1.1

      Richardson, Carson A.; Pearthree, Philip A.; Arizona Geological Survey (Arizona Geological Survey (Tucson, AZ), 2025)
    • Comparing the Ignitability of Mulch Materials for a Firewise Landscape

      Rogstad, Alix; DeGomez, Tom; Hayes, Chris; Schalau, Jeff; Kelly, Jack (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2014-10)
      Eight different landscape mulches were tested for their flammability using a propane torch, charcoal briquette, and a cigarette at two different times of the year. Three randomized compete blocks with eight one square meter plots were tested at three locations; Tucson, Prescott, and Flagstaff, Arizona. Each of the mulches was subjected to the heat of a handheld propane torch (15 seconds), a glowing charcoal briquette (five minutes), and a lit cigarette (until burned out). We found that the least dense mulches (pine needles and straw) burned rapidly when subjected to the torch and ignited after the briquette was removed. The medium density mulches (pine bark nuggets and wood chips) had low flame lengths and smoldered. Heavy density mulches (garden compost and shredded bark) only smoldered. The decomposed granite and sod did not ignite or smolder.
    • Which Biological Insecticides Work Best Against Lepidopteran Pests in Brassicas and Lettuces?

      Calvin, Wilfrid; University of Arizona (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11-25)
      This article in the VegIPM Newsletter (Vol. 16, No. 24) summarizes organic insecticide performance against major lepidopteran pests in Brassicas and lettuce. Across three seasons of trials, XenTari and Entrust provided the most consistent suppression, while other biological products showed more variable results.
    • Soil Health: Sources Utilized in Plant Nitrogen Uptake

      Silvertooth, Jeffrey C.; University of Arizona (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11-25)
      This article in the VegIPM Newsletter (Vol. 16, No. 24) explains that crops mainly rely on inorganic nitrogen and that organic forms play only a minor role in plant uptake.
    • Nonprofits And Their Impact In Communities Cochise County

      Holden, Carol (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-10)
      Nonprofit organizations are the quiet architects of American community life, shaping the social, economic, and cultural fabric of the nation. While their contributions often receive less attention than government programs or private enterprise, nonprofits fulfill essential roles in addressing unmet needs and advancing the common good. From food banks and health clinics to arts councils and educational foundations, these organizations provide critical services, foster resilience, and strengthen civic life. This article examines the multifaceted role of nonprofits in shaping community well-being. It highlights their economic contributions, influence on public policy, and capacity to advance social transformation—drawing on national data as well as regional insights from Arizona and Cochise County.
    • Groundwater Fluoride Exposure and Potential Effects on Arizona Livestock

      Whitmore, Chrisa; Caroll, Lynn; Sethuraman, Anupama; Rondon, Anna; Yancy, Jayme; Ingram, Jani C.; Johnson, Michael K.; Chief, Karletta; Karanikola, Vasiliki; Hoover, Joseph H. (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11)
      Fluoride (F-) is a naturally occurring mineral commonly found in surface and groundwater. It is present in water sources due to the erosion of F- containing rocks and soil found throughout the United States. While chronic, long-term F- exposure in livestock, particularly cattle, may lead to dental and skeletal fluorosis, the risk to human health through meat consumption remains low, though uncertain due to limited previous research. Despite this limitation, previous work has demonstrated that chronic F- accumulation in cattle, primarily through water, feed, forage, and crops, is an important consideration for livestock health. Due to its widespread occurrence in groundwater through Arizona, continued research is needed to address knowledge gaps regarding F- accumulation in cattle and refine our knowledge of how to effectively diminish risks to maintain livestock health and well-being.
    • Manure and Composted Manure Use in Arizona Agriculture

      Pierce, Michael (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11)
      Manure and composted manure have long been recognized as valuable resources for building healthy soils. When used thoughtfully, they contribute organic matter, supply essential plant nutrients, and support nutrient cycling. However, their use also requires careful management to avoid unintended impacts such as introducing weed seeds, spreading pathogens, or altering soil chemistry through salt or nutrient buildup. Understanding these risks and applying best management practices ensures that manure and compost remain beneficial tools for soil health and agricultural production. Arizona soils present unique challenges that make manure and composted manure especially relevant. In the state’s hot, arid climate, organic matter decomposes rapidly, leaving many Arizona soils with minimal organic matter for nutrient cycling (Bliss, 2003). These soils are often alkaline, with pH values ranging from 7.0 to 8.8, and may contain hardened layers of calcium carbonate (caliche). Although mineral-rich and geologically diverse, the high pH can limit plant uptake of micronutrients such as iron, manganese, and zinc. This combination of low organic matter and alkaline chemistry means that soil amendments, such as manure or composted manure, can provide significant benefits.
    • Proactive Resistance Management App Instructional Booklet

      Ellsworth, P.C.; Fournier, A.; Keith, M.; Calvin, W; Brown, A; Dixon, W; King, M.; Rahr, M; University of Arizona (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11-06)
      This instructional booklet provides a concise, field-ready guide to the Proactive Resistance Management (PRM) web tool, a community-based decision-support system developed by the Arizona Pest Management Center to promote proactive insect resistance management. Through short explanatory panels and annotated screenshots, the booklet introduces key concepts such as temporal refuge and Mode of Action (MoA) color families, explaining how users can interpret and apply PRM outputs to support sustainable insecticide stewardship across crops and regions. Designed for one-on-one or small-group teaching in the field, this resource complements the online tool available at PRM.extension.arizona.edu.
    • Crop Evapotranspiration in Organic Lettuce Production as a Water-Saving Strategy under Sensor-Guided Irrigation in the Lower Colorado River Basin

      Mohammed, Ali T. (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11)
      This study was conducted at the University of Arizona, Yuma Agricultural Center, to quantify and compare the seasonal crop evapotranspiration (ETc) of organic and conventional iceberg lettuce under sensor-based and traditional irrigation scheduling, with and without biostimulant applications..
    • Projected Temperature Increase Across the Cotton Belt Region of the United States

      Singh, Bhupinder; Samanta, Sayantan; Ale, Srinivasulu (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-10)
      This article outlines projections for maximum and minimum air temperatures averaging across nine selected GCMs under four Shared Socioeconomic Pathways (SSP) scenarios: SSP1-2.6 ("Sustainability" pathway with low greenhouse gas emissions), SSP2-4.5 (moderate future warming), SSP3-7.0 (medium to high level of greenhouse gas emissions), and SSP5-8.5 (high greenhouse gas emissions scenario). The projections are provided for five sites across the US Cotton Belt: Maricopa, AZ; Halfway, TX; Chillicothe, TX; Camilla, GA; and Lewiston-Woodville, NC, where key research and extension centers linked with the University of Arizona, Texas A&M University, Texas Tech University, the University of Georgia, and the University of North Carolina, respectively are located.
    • Arizona Agricultural Enterprise Budgets: Maricopa County’s 2025 Field Crops’ Production Budgets

      Quintero, José H.; Mukherjee, Avik (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-10)
      This report estimates the typical economic costs and returns for growing major crops, including alfalfa, barley, corn silage, cotton, sorghum grain, sorghum silage, durum wheat, and winter wheat in Maricopa County, Arizona. The Arizona Agricultural Enterprise Budgets are estimated based on a representative farm and its related cropping operations in a determined location; numbers are reported on a per-unit basis.
    • Soil Health: Nitrogen Cycle and Management in Agricultural Soils

      Silvertooth, Jeffrey C.; University of Arizona (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-11-11)
      This article, published in the Vegetable IPM Newsletter (Vol. 16, No. 23), explains the nitrogen cycle and the biological processes that transform nitrogen into plant-available forms. It highlights the importance of the mineralization–immobilization transformation (MIT) cycle in maintaining soil fertility, supporting crop productivity, and managing nitrogen efficiently in agricultural systems.
    • Arizona Agricultural Enterprise Budgets: Pinal County’s 2025 Field Crops’ Production Budgets

      Quintero, José H.; Mukherjee, Avik (College of Agriculture, Life & Environmental Sciences, University of Arizona (Tucson, AZ), 2025-10)
      This report estimates the typical economic costs and returns for growing major crops, including alfalfa, barley, corn silage, cotton, sorghum grain, sorghum silage, durum wheat, and winter wheat in Pinal County, Arizona. The Arizona Agricultural Enterprise Budgets are estimated based on a representative farm and its related cropping operations in a determined location; numbers are reported on a per-unit basis.