UC ANR supports California's almond crop protection workforce through Airblast Sprayer Calibration Trainings to maintain or improve their technical knowledge. 100% of participants reported both learning professional skills and their intent to adopt practices that can improve the sustainability and profitability of California ag.

The Issue

For efficient and effective pesticide spray application, all sprayers should be calibrated as often as necessary throughout the growing season of almonds, especially when dealing with orchards of different ages and sizes. Calibration is considered a best practice in pesticide spray application ensuring accurate application rates and adherence to pesticide labels which is the law. As such, proper understanding of sprayer calibration objectives and steps is needed to avoid using incorrect methods that give a false sense of accuracy. Educating growers and applicators in calibration methods will therefore empower them to ensure the use of properly calibrated sprayers well-adjusted to the target canopy to deliver maximum crop protection while minimizing pesticide loss. 

How UC Delivers

In June 2023, UC ANR co-hosted two Calibration Safety & Compliance Training events, one for Northern California and the other for Central California, with the Almond Board of California (ABC), AgSafe Food and Farms (AgSafe), and the Western Agricultural Processors Association (WAPA). The Northern California training was held at the Nickels Soil Lab in Arbuckle, CA, while the Central California event took place at the UC's Kearney Agricultural Research and Extension (KARE) Center in Parlier, CA. The events were aimed at providing practical calibration training on how to prepare and calibrate airblast sprayers as well as compliance training such as how to manage required documents for pesticide applications. The 4.5-hour trainings included “Welcome” by the ABC, “Regulatory Update” by WAPA, “Calibration Training” by UC ANR, “Headquarters Compliance Training” by AgSafe, and “DPR Laws & Regulations Update” also by AgSafe. The DPR approved 4.0 hours of continuing education credits – 2.0 ‘Laws' and 2.0 ‘Other' – for qualifying participants. Overall, 50+ attendees participated in both events: 30+ in Arbuckle and 23 in Parlier.

The Calibration Training by UC ANR was a 2-hour practical session conducted in an almond orchard along with airblast sprayer demonstrations. It was presented in an interactive format allowing participants to interject with questions, comments, and observations. The Northern California training was led by UC Cooperative Extension advisor Dr. Franz Niederholzer in collaboration with UC Cooperative Extension specialist Dr. Peter Ako Larbi. Alternatively, the Central California training was led by Dr. Larbi in collaboration with Dr. Niederholzer. Both sections covered: “Sprayer parts review”; “Sprayer calibration basics and calculations”; “Sprayer speed determination”; “Sprayer air profile assessment and nozzle configuration”; “Flow rate measurement”; and “Spray coverage evaluation”. Staff from the Nickels Soil Lab, the Agricultural Application Engineering (AgAppE) Lab, and KARE Center provided Logistical, technical, and documentation support. The participants completed evaluation forms to provide feedback for just the Calibration Training section. Comments from the evaluation forms included…

“Very good class.”

 “Great rapport with participants.” 

 

The Impact

In all, 22 participants provided feedback on their learning for the combined Calibration Training sections for the Northern and Central California events. Overall, 100% reported “much” to “very much” learning from the combined Calibration Training sections indicating that they were very effective and provided participants with a great amount of learning. Likewise, 100% also indicated their intent to adopt the practices learned from the section. Looking at each section of the training, 82% reported learning “much” to “very much” from the “Sprayer parts review”, 100% the same for “Sprayer calibration basics and calculations”, 91% for “Sprayer speed determination with flagging”, 91% for “Sprayer air profile assessment and nozzle configuration”, 91% for “Flow rate measurement”, and 82% for “Spray coverage evaluation” (full breakdown of feedback by section in the graphic below). Additional written comments were mostly positive.

The needs assessment conducted by Dr. Larbi for his Agricultural Application Engineering Program in 2019 showed that 56% of perennial specialty crop growers and applicators in the San Joaquin Valley used airblast sprayers, 12% used tower sprayers, 15% used electrostatic mist blowers, and 17% used other sprayers. Also, 22% calibrated their sprayers 10 or more times a year, 32% calibrated 4-6 times, and 46% calibrated only 1-3 times a year. According to the California Pesticide Use Report, in 2021, 456,802 pesticide applications delivered 34,323,828 lbs. of pesticide across 24,147,968 acres of almond orchards. This amounts to 75.14 lbs. per application or 1.42 lbs. per acre. If even 1% of the application was overapplied and another 1% was underapplied due to using uncalibrated sprayers in the year (a conservative guess if nearly half of applicators only calibrate 1-3 years times a year), then 686,477 lbs would have been misapplied leading to either reduced pest control or increased pesticide loading on the environment. This number is very significant considering that the situation does not apply to only almond production. Thus, by increasing the competency of California's almond crop protection workforce for properly calibrating sprayers as a best practice, UC ANR potentially improved environmental sustainability.

UCCE academics Dr. Niederholzer and Dr. Larbi have an extended collaboration in providing spray application and sprayer calibration training in both Northern and Central California since 2019. The results presented here exemplify the impact of such trainings. Expanding this collaboration to include industry stakeholders reaches other audiences, potentially new participants, and increases the extent of impact. UC ANR will continue to support California agriculture through such trainings and the dissemination of science-based information to promote operational efficiency and profitability.

UC ANR Advisors restructured Range Camp, a rangeland education program that has helped 95% of participants improve their understanding of ecosystem processes in California's rangelands, supporting a more qualified workforce.

Elkus Youth Ranch - Welcome!

The Issue

Rangelands cover 62.9 million acres of California; almost 63% of the state. California rangelands support livestock production and provide important ecosystem services including wildlife habitat, recreation opportunities and beautiful viewsheds. California's Range and Natural Resources Camp (Range Camp) provides a five day immersive camp experience for high school students ages 15-18 focused on the science and art of range and natural resources management. The camp is held annually at UC's Elkus Ranch. For 35 years, the California-Pacific Section of the Society for Range Management organized and sponsored Range Camp. As time passed, it became clear that a new organization needed to pick up the reins of Range Camp to sustain this effective youth science education outreach program.

 

How UC Delivers

This week-long long camp is held annually at UC's Elkus Ranch and provides an immersive experience focused on the science and art of range and natural resource management. Livestock and natural resources Advisors Theresa Becchetti, Julie Finzel, Rebecca Ozeran, and Devii Rao provided capacity for all facets of Range Camp planning and operations. They secured funding to integrate a teacher training component into camp and to facilitate the development of a high school range management curriculum focused on the unique characteristics of California rangelands.

When the COVID-19 pandemic struck, and it became clear that an in-person camp was not feasible, the camp was restructured to accommodate an all virtual experience. The traditionally week-long camp was condensed into 23 brief videos and activities, each of which covered an important science concept. Topics included:

• Rangeland Ecology
• Rangeland Monitoring
• Plant Identification
• Ornithology
• Virtual Ranch Tours
• Ranch Economics
• Wildlife
• Climate Change
• Fire Ecology
• Careers in Range Management

The Impact

A survey was distributed in 2017 to campers from 2001-2016 to assess the impact of Range Camp. The survey response rate was 18%, with 95% of respondents indicating that camp increased their understanding of natural resources and 90% of respondents reporting that camp changed their perceptions of how our personal actions affect the environment. College majors among survey respondents were heavily weighted towards science degrees. Range Camp graduates have gone on to be UCCE Advisors, work for NASA, direct youth education outreach organizations and more, demonstrating how new partnerships and contributions from UC ANR Advisors have cultivated new rangeland professionals and contributes to UC ANR's public value of developing a qualified workforce. Range Camp is about more than teaching science; it's about challenging preconceptions, fostering new friendships, and building life skills. One camper stated:

I felt so complete when the sun was disappearing behind the hills…it was as if camp made me realize that I can make a difference. Suddenly, beating global warming and climate change seemed possible…Range Camp has enlightened me. It has changed me. It has permanently made me a ‘happy camper.'

To learn more about Range Camp, visit our program website.

After attending West Coast Rodent Academy, 75% of participants implemented improved rodent management skills, decreasing negative environmental impacts and demonstrating UC ANR's commitment to protecting California's natural resources.

The Issue

Commensal rodents, rats and mice, are among the most economically significant pests in the world. Three species of commensal rodents (Rattus rattus, Rattus norvegicus, and Mus musculus) are found in almost all California cities. These rodents exist in close proximity to human populations and are regularly found in homes, schools, restaurants, and other commercial settings, as well as food processing plants, storage areas and warehouses. In the United States, the need for rodent-focused integrated pest management (IPM) strategies is increasing. Studies have shown that climate change may affect fecundity and survivorship in some mammalian species. Climate change may also affect the free-living, intermediate, or vector stages of pathogens, such as those that infect commensal rodents. The lack of cost-effective alternatives to rodenticide use and property owners' resistance to making structural changes to their properties, combined with the pressure on the applicator to rapidly remediate the rodent infestation proves challenging for all involved in rodent management.

How UC Delivers

UCCE Advisor Niamh Quinn co-created the Rodent Academy curriculum, informed by research that has determined ways to decrease rodenticide exposure to nontarget wildlife. The goal of commensal rodent management is to reduce the population of rodents quickly so that no further damage or exposure to allergens and pathogens occurs. To achieve this goal, rodent management needs to be quick and efficient and involve a combination of trapping and rodenticides.

The curriculum is being delivered via the three-day West Coast Rodent Academy (WCRA). To date, 307 individuals from 115 pest management companies, as well as city, county, and state agencies have participated. It is projected that the WCRA will continue to grow and reach pest management professionals across California. WCRA has also had attendees from ten other states despite the program being developed  for California's pest management professionals. For example, Oregon State University's School of Integrated Pest Management Program attends  WCRA trainings  to learn more about starting  an academy in the Pacific Northwest. Furthermore, funds generated from the West Coast Rodent Academy are applied to research being conducted in three Master of Science projects related to pest management.

To evaluate the impact of WCRA, a follow-up survey was sent to approximately 180 professionals trained through the West Coast Rodent Academy in 2019.

The Impact

Over 90% of 43 West Coast Rodent Academy participants that responded to surveys indicated they have started or improved behavior changes related to identifying rodents and implementing safe work practices that reduce the risk of contracting rodent-borne disease. Over 85% reported behavioral changes around developing an integrated pest management plan for rodents and communicating with customers about the importance of integrated pest management. Three-quarters of the respondents reported improvements in following rodenticide label instructions. A majority of respondents believe these changes led to more efficient management, decreased negative environmental impacts, and increased customer satisfaction. These measured outcomes demonstrate how Rodent Academy contributes to increased ecological sustainability as part of UC ANR's commitment to the public value of protecting California's natural resources.

Universities adopted UCCE agriculture production innovation and technology video series, contributing to workforce competency.

 

The Issue

Projections for near-future retirements of people working in California's agricultural production, marketing and post-harvest handling sectors indicate severe re-staffing needs in the coming years. Technological advances have reduced manual labor in agriculture, but increased the need for skilled labor to maintain the sustainability of the vegetable industry.  Maintaining California's leading role in producing abundant, safe vegetables is critical not only to Americans' health, but also to the state's economy. 

 How UC Delivers

 UC ANR's Cropping Systems Cooperative Extension Specialist, Jeff Mitchell assembled a team of professors from California's public universities with agricultural programs – UC Davis, Chico State, Fresno State and CalPoly San Luis Obispo - to pull together the series of videos designed to spark the interest and begin training future farmers and agriculture workers in sound agronomic, economic and environmental stewardship skills. The team received financial support from the California Department of Food and Agriculture Specialty Crops Block Grant Program.  The video series is offered on the UC Agriculture and Natural Resources (UC ANR) YouTube page on a playlist titled “Training of a New Generation of California Vegetable Producers.” 

The videos depict state-of-the-art technologies and techniques that are in use in many production regions of California today, vegetable farming systems used in other parts of the world, and increasingly popular cottage farming systems that are popping up in urban areas for easy access to healthful foods.  A key feature of the videos is their showcasing leading vegetable farmers and industry leaders and having them speak directly to students about their work and how they manage the complex dimensions of today's vegetable crop production systems.

“We know that maintaining California's leading role in producing abundant, safe vegetables is critical not only to Americans' health, but also to the state's economy,” UC ANR's Mitchell says.  “These videos have greatly increased knowledge and awareness of production practices.”

The Impact

The video-series  has been adopted by four universities, used in courses to provide real-world information on state-of-the-art production practices and technologies to over 200 students each year.  Pre- and post-video viewing surveys indicate student knowledge of production innovation and technology provided by an example video on “urban agriculture” increased from 0% being very knowledgeable to extremely knowledgeable to 67% after viewing the video.  Because many of today's students in agriculture-related courses do not have practical experience with crop production, the videos have provided a critically important means for learning and increasing the practical knowledge of this next generation of production workers.  In addition, the video series has had broad interest beyond the classrooms.  The agricultural industry, students in other parts of the United States and the world, and the broader public all have an interest in understanding how the vegetables we eat are produced at the ever-increasing scale at which they are needed. Importantly, the California Agricultural Vision statement of CDFA (https://www.cdfa.ca.gov/agvision/docs/AgVision_2017.pdf(2017) strongly recognizes the critical need to equip the next generation of workers in the field and throughout the packing and processing chain. A World Bank study (2007) determined effects of agricultural education and training on agricultural productivity, including enhanced worker productivity; increased grower abilities to choose prime combinations of inputs and outputs, and increased grower capacity to innovate and adapt new technologies. In this way, UC ANR contributes to increasing workforce competency and the public value of developing a qualified workforce in California.