RSS 1.0Colleges, Departments, and Organizations
ABOUT THE COLLECTIONS
Several University of Arizona organizations, such as colleges, departments, research and administrative groups, have established collections in the UA Campus Repository to share, archive and preserve unique materials.
These materials range from historical and archival documents, to technical reports, bulletins, community education materials, working papers, and other unique publications.
QUESTIONS?
Please contact Campus Repository Services personnel repository@u.library.arizona.edu with your questions about items in these collections, or if you are affiliated with the University of Arizona and are interested in establishing a collection in the repository. We look forward to working with you.
Sub-communities within this community
Recent Submissions
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Building Blocks to Teach Children Money HabitsThese easy-to-use Parent Tip Sheets aim to improve caregiver confidence and prepare children with essential knowledge and skills to understand important financial concepts. The Building Blocks to Teaching Children Money Habits features selected children's books and complementary activity sheets that emphasize developmentally appropriate financial literacy building blocks with a focus on executive function, math, and social-emotional concepts, including counting, sorting, opposites, sharing, trueness to self, choices and consequences.
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Computer Models and Decision-Support Platforms for Precision Irrigation ManagementThe irrigation management tools reviewed in this publication serve different but interrelated purposes. The WINDS model functions as a field-scale model for evaluating soil water, salinity, and related processes, while the pyfao56 model is a FAO-56 evapotranspiration and soil-water-balance analysis model designed for customized integration within other software platforms and user interfaces. The OpenET platform provides satellite-derived evapotranspiration data rather than direct management recommendations, and CropManage focuses on crop-specific irrigation and nitrogen management. SWAN Systems is designed as a farm-scale platform that integrates irrigation and nutrient management Because these tools are intended for different applications, selection should be guided by the required management level and objectives. Platforms such as SWAN Systems and CropManage are better suited for operational irrigation scheduling, particularly when sensor data or crop-specific recommendations are desired. The current version of WINDS is more appropriate for scenario analysis and salinity management, while OpenET is useful for accessing regional or field-scale ET information. In practice, using more than one tool may provide the most effective support, especially when irrigation scheduling, evapotranspiration estimation, salinity management, and automation are all part of the management strategy.
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A Guide to Maintaining and Calibrating Field-Installed Soil and Plant Moisture SensorsSoil moisture and sap-flow sensors can be valuable tools for improving irrigation management and crop water use efficiency, but their effectiveness depends on proper installation, calibration, and ongoing maintenance. Field conditions such as soil variability, extreme temperatures, salinity, physical damage, and power or connectivity issues can significantly affect sensor accuracy and reliability, especially in environments like the arid climate of Arizona. Without routine inspection and calibration, sensor drift and localized measurement errors can lead to misleading data and poor irrigation decisions. This guide highlights that no single sensor or method can fully capture the complexity of soil-plant-water interactions. Using multiple sensors at representative locations and depths, validating readings with manual or gravimetric measurements, and applying site- and crop-specific calibration are essential steps for obtaining reliable information. Similarly, sap-flow sensors are best suited for tracking relative changes in plant water use and stress rather than absolute irrigation requirements, especially under variable environmental conditions.
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The Connectedness of People and Geological Features in the El Malpais Lava Flows of New Mexico, USAEl Malpais National Monument in New Mexico, USA, is a landscape of significant cultural and geological importance, characterized by extensive lava flows, caves, and cinder cones. Despite its harsh terrain, El Malpais holds deep cultural and spiritual meanings for Native American communities, including the Acoma, Zuni, Laguna, and Navajo tribes, whose cosmologies and histories are interwoven with this landscape. Employing a mixed-methods approach combining ethnographic fieldwork with comparative literature studies, this paper documents how these Indigenous groups perceive and interpret interconnected geological features as sacred and meaningful parts of their ancestral heritage. The findings reveal that volcanic landscapes are central not only to cultural origin narratives but also to ongoing rituals, resource use, and pilgrimage practices. This interconnectedness is exemplified by the cultural links between El Malpais and adjacent Mount Taylor, highlighting how geological features form a unified sacred geography. This study positions El Malpais as a culturally animated landscape, where Indigenous epistemologies and spiritual relationships with volcanic landforms challenge conventional notions of geoheritage and call for relational, community-informed approaches to heritage management.
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Executive Summary: Roundtable on an Arizona North–South Local Foods PipelineThe development of local food systems across Arizona has progressed unevenly, leaving rural communities and small farmers with significant gaps in market access, wholesale opportunities, and affordable processing infrastructure. While these disparities are well-documented, a lack of coordinated effort and recent reductions in federal and technical support have created a persistent barrier to progress. To address these structural realities, a statewide roundtable was convened on July 22, 2025, to establish a foundation for a "North-South" food pipeline that supports small farmers and improves institutional procurement. The resulting findings emphasize that a mid-supply-chain gap restricts the ability of producers to scale and limits community access to Arizona-grown foods. To overcome these challenges, the report concludes that stakeholders must prioritize three key areas: investment in physical cold-chain infrastructure, the reform of complex institutional procurement policies to include local producers, and the strengthening of stakeholder education and relational transparency.
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Lygus In Cotton: Implementing Action Thresholds. No. 3Lygus bugs are a key economic pest in Arizona cotton, causing yield losses through square abscission, delayed crop maturity, and reduced fiber quality. Effective management requires balancing control with the risks of insecticide overuse, including secondary pest outbreaks and resistance. This IPM short outlines a research-based action threshold system designed to optimize economic returns while minimizing unnecessary applications. The recommended threshold—15 total Lygus with at least 4 nymphs per 100 sweeps (15/4)—focuses on the most damaging and controllable life stage, nymphs, while using adult counts as indicators of population establishment. Field studies demonstrate that this threshold reduces pest densities effectively and achieves near-optimal net returns, avoiding the yield penalties associated with excessive spraying. Implementation requires systematic sampling, careful interpretation of both adult and nymph counts, and consideration of crop stage, natural enemies, and environmental conditions. Overall, the 15/4 threshold provides a practical, economically sound framework for Lygus management that supports sustainable cotton production in Arizona.
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Arizona Native Plant Seedling Identification Pocket GuideThis guide is meant to assist in the identification of a few of Arizona’s most common native grasses and forbs. Identifying plants can be hard, identifying seedlings can be outrageously difficult. Here, we attempt to provide general guidelines for seedling identification in the field, in the garden, or in the greenhouse. The species in this guide are just a small fraction of all of the native plants in Arizona. They were chosen for inclusion due to their general common distribution across the state and their high frequency of use in ecological restoration projects. To confirm your identification, take a picture of your plant and ask a Master Gardener for assistance, or wait until the plant grows. Never pick a native (or unknown) plant from the ground. Measurements for this guide were taken inside of a greenhouse and environmental conditions can modify aspects of growth, so all values are provided as a suggested guide.
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Using OpenET Platform and LI-710 Sensor for Irrigation Management in ArizonaWhile freshwater is renewable, water resource depletion is occurring considerably more quickly than expected. With population growth and socioeconomic development, global water consumption has increased nearly sevenfold in the last century (Gleick, 2000), impacting the long-term sustainability of agriculture. The agriculture sector, the largest water user, accounts for over two-thirds of withdrawals. Therefore, precise irrigation is vital in arid regions where agriculture uses a significant share of water resources. Crop evapotranspiration (ETc) accounts for most of irrigation water use, especially in dry climates. Thus, accurate ETc estimation is important. Different methods are used to estimate ETc, such as lysimeters, Bowen ratio, surface renewal, and eddy covariance (EC), but they are costly and require expertise (Elsadek et al., 2025). Remote sensing models can also be used to estimate ETc, but their applications are limited by cost, expertise, and computational requirements (Volk et al., 2024). Recently, the OpenET platform has been developed to offer free, high-resolution ET data suitable for US irrigation management. The LI-710 sensor (LI-COR Inc., Lincoln, Nebraska, USA) was also presented as a lower-cost, user-friendly alternative to EC systems, providing continuous ETc measurements with less maintenance. Limited studies evaluated OpenET for irrigated alfalfa in Arizona; however, no cited studies evaluated OpenET or LI-710 for late-planted cotton in Arizona (Attalah et al., 2025, 2024). The following guide leverages a field study that cross-validates cotton ET from OpenET and LI-710 against soil water balance (SWB) estimates in Gila Bend, Arizona, aiming to identify the best technique for estimating cotton ET for irrigation management under arid conditions.
