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Hands-on learning, training make irrigation best practices accessible

UCCE advisors provide free training to nursery and greenhouse staff

Working as an irrigator seems straightforward at first: if you're not watering plants by hand, you're building and managing systems that can do the watering. What could be complex about a job like this?

University of California Cooperative Extension advisors Bruno Pitton and Gerardo “Gerry” Spinelli can tell you – or better yet, show you.

Pitton and Spinelli, members of the UC Nursery and Floriculture Alliance, offer a one-day technical training in irrigation best-management practices for irrigators working with containerized nursery plants. The comprehensive curriculum – developed with input from two focus groups of California nursery and greenhouse managers – aims to improve irrigation efficiency, reduce water consumption and improve plant health.

Thanks to funding from the California Department of Food and Agriculture, nursery and greenhouse managers in California can request this training for free and advisors like Pitton and Spinelli will travel to conduct the training on-site.

The complexities of irrigation incorporate concepts like evapotranspiration, salinity, irrigation uniformity, capillarity, pressure and flow rate. Spinelli, UCCE production horticulture advisor for San Diego County, said that irrigators have a critical role in the industry because of all the things they must consider to do their job well.

“Our goal is to support irrigators and help them become more confident decision-makers and experts in the field,” said Pitton, UCCE environmental horticulture advisor for Placer and Nevada counties.

Interactive sessions reveal nuances of irrigation

The training consists of a presentation on fundamental concepts for managing irrigation in container plant production and hands-on demonstrations. “In the nursery industry, where precise irrigation is crucial for the health and productivity of our crops, having access to expert knowledge is invaluable,” said Mauricio de Almeida, general manager of Burchell Nursery in Fresno County. “The training's practical demonstrations and real-world examples made the concepts easy to grasp, allowing our team to implement the strategies immediately.”

For one of the demonstrations, the advisors used sponges to model soil saturation when water is applied. Ana, an irrigator at Burchell Nursery, appreciated the step-by-step explanations, which helped her better understand how water pressure differs in drip irrigation, sprinklers and watering by hand. Doing this out in the field, as an example of how irrigation audits occur, was extremely helpful for attendees.

Francisco “Frank” Anguiano, production manager of Boething Treeland Farms in Ventura County, observed his team of irrigators as they learned how to measure distribution uniformity with water collected from sprinklers. “This training isn't just about irrigation and plant management. It's also about savings, both water and costs. Who doesn't want to save money and use less water?” Anguiano said.

Reducing the barriers to learning

Many of the irrigators attending these trainings gained their skills and knowledge from life experience rather than a college education, explained Peter van Horenbeeck, vice president of Boething Treeland Farms. “It's important that my irrigators learn from external experts, but it's more important that they can relate to them. And that's what Gerry was able to do,” van Horenbeeck added.

Regarding content and delivery, and referencing what he learned from the focus groups, Pitton wanted the trainings to be easy to understand and engaging. For example, scientists use the term “matric potential” to describe how soil particles hold water against gravity, which is the same as capillary rise. “We demonstrate this concept with a paper towel held vertically and dipped into a beaker of dyed water that it absorbs,” said Pitton.

Many of the irrigators in attendance agreed that hands-on activities and visual aids were instrumental to their learning. Charli, another irrigator at Burchell Nursery, shared that the in-field examples and hosting the training in Spanish kept them engaged.To address language barriers, Spinelli has been conducting trainings in Spanish – a common request from many nurseries with eager participants.

Maintaining state regulations and partnerships

Although the technical aspects of irrigation management are key elements of the training, regulatory compliance is also addressed. Recognizing the finite availability of water and the environmental impact of pollution, the advisors highlight irrigation and fertilizer management and runoff prevention as critical components of compliance.

Under Ag Order 4.0 administered by California's Water Resources Control Board, growers must comply with stricter policies regulating nitrogen use. As irrigators learn from the training, better control of irrigation can certainly make a difference.

Deanna van Klaveren, chief operating officer and co-owner of Generation Growers in Stanislaus County, said the most valuable aspect of the training was learning on-site and completing an audit on her own systems. “It is so much more impactful to have trainings like this on-site where our staff can learn and then go out into the nursery and actually put it into practice while the presenters/experts are there,” van Klaveren said.

Pitton and Spinelli described the partnership between UC Cooperative Extension and CDFA as “symbiotic” given the technical and educational capacity of UCCE advisors who conduct research and extension.

“It's a great example of how the two institutions can collaborate successfully. Californians are the ones who win because they get a service for free,” added Spinelli. “And it's rewarding for us to see so much interest in what we, as advisors, do.”

If you are a nursery or greenhouse operator and would like to request the Irrigation Best Management Practices training, please contact the UCCE advisor assigned to the region that corresponds with your nursery location below.

Northern California

• Jessie Godfrey, UCCE environmental horticulture and water resources management advisor, jmgodfrey@ucanr.edu

Central Coast (Santa Cruz County to Ventura County)

• Emma Volk, UCCE production horticulture advisor, evolk@ucanr.edu

San Joaquin Valley

• Chris Shogren, UCCE environmental horticulture advisor, cjshogren@ucanr.edu

Southern California

• Grant Johnson, UCCE urban agriculture technology advisor, gejohnson@ucanr.edu

Spanish Trainings Only

• Gerry Spinelli, UCCE production horticulture advisor, gspinelli@ucanr.edu

UCCE offers water measurement training Sept. 13 in Salinas

California water-rights holders are required by state law to measure and report the water they divert from surface streams. For people who wish to take the water measurements themselves, the University of California Cooperative Extension is offering in-person training to receive certification on Sept. 13 in Salinas.

At the workshop, participants can expect to

• clarify reporting requirements for ranches.
• understand what meters are appropriate for different situations.
• learn how to determine measurement equipment accuracy.
• develop an understanding of measurement weirs.
• learn how to calculate and report volume from flow data.

The training is scheduled for 1 to 5 p.m. on Sept. 13 in the UC Cooperative Extension Conference Room at 1432 Abbott Street in Salinas.

“We are limiting the number participants for the water measurement training to 30 people per session,” said Larry Forero, emeritus UC Cooperative Extension livestock and natural resources advisor. “If you need this training, please register soon.” 

Pre-registration is required and the fee is $30. To register, visit https://surveys.ucanr.edu/survey.cfm?surveynumber=43495. If you have questions, email Forero at lcforero@ucanr.edu or Sara Jaimes at sbjaimes@ucanr.edu, or call (530) 224-4900.

 

Public invited to observe prescribed fire training June 4-9

The Monterey Bay area will host part of the first California Central Coast Prescribed Fire Training Exchange, or Cal-TREX.

Fire practitioners from across the state, greater North America and international locations (Spain, Honduras, Costa Rica, Ecuador) are gathering for a Prescribed Fire Training Exchange on June 3-10.

The training is hosted by the Central Coast Prescribed Burn Association, which empowers the public to build a culture of “good fire” and helps private landowners conduct prescribed burns in Monterey, San Benito and Santa Cruz counties.

Prescribed burns will be open for the public to observe on various days throughout the training, most likely June 4-9, depending on the weather. Please see the CCPBA webpage for updates on upcoming burns: http://calpba.org/centralcoastpba.

Prescribed Fire Training Exchanges (TREX) first came to Northern California in 2013, and have made a dynamic, positive cultural shift concerning prescribed fire, within both regional fire services and the general public. These “good fire” TREX events have drawn significant attention, especially in the context of more severe wildfire seasons.

After months of cross-organizational cooperative planning, participants in the weeklong training will be burning a mix of grassland, oak woodland and shrub vegetation types, and make a lasting, positive change concerning “good fire” on the Central Coast.

The TREX will provide experiential training opportunities to advance regional prescribed fire capacity, while also enhancing research to better understand the ecological response of wild plant and animal species following fire.

At this TREX event, participants will learn how to safely conduct prescribed burns in various vegetation types across three counties. Along with multiple prescribed burns, the weeklong program will include lectures and seminars on local fire ecology of plant and animal species, tribal burning practices and burn planning led by multiple burn bosses and other experts.

Burn locations may include the Nyland property (owned by Trust for Public Land and San Benito Agricultural Land Trust) near San Juan Bautista, the Santa Lucia Conservancy near Carmel Valley and the Kechun Village (owned by the Nason family) in Arroyo Seco.

Be advised, while the CCTREX works closely with the Monterey Bay Air Resources District (MBARD) to assure good smoke dispersal, smoke may be seen and present in these areas during and after a burn. Please see the CCPBA webpage for updates on upcoming burns: http://calpba.org/centralcoastpba.

BurnBot, a new technology featuring a mobile burn chamber, remote-controlled mastication and fire drone systems, will be used for the prescribed burn on June 4. To observe the Nyland burn on June 4, register at https://bit.ly/CCPBApublicRxfire. Details including time and directions will be emailed to registered participants.

Participants and partners include members of the Amah Mutsun Tribal Band and the Esselen Tribe of Monterey County, University of California Agriculture and Natural Resources, Resource Conservation District of Monterey County, CAL FIRE, local land trusts, scientists, ranchers, students, researchers, land managers and others. The CCPBA is funded by two CAL FIRE wildfire prevention grants.

For more information, contact Jamie Tuitele-Lewis, fire fuel mitigation program and forest health coordinator, at jtlewis@rcdmonterey.org or Barb Satink Wolfson, UC Cooperative Extension area fire advisor, at bsatinkwolfson@ucanr.edu.

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