Posts Tagged: sustainable
Water Management for California Home Gardeners
Water is essential for any garden, but it's crucial to use water wisely in a place like California, where droughts are common. Effective water management can help home gardeners keep their plants healthy while conserving this precious resource. Thoughtful water management uses resources efficiently and sustainably to meet current and future needs. It involves planning, developing, distributing, and managing the optimum use of water to ensure plants survive and look good. By conserving water, home gardeners contribute to the preservation of local ecosystems and the sustainability of the environment.
Plant Water Use
Understanding how much water your plants need is the first step in effective water management. Different plants have different water requirements. For instance, succulents and cacti need less water than vegetables or fruit trees. It's important to group plants with similar water needs together. This way, you can avoid overwatering or underwatering specific plants. You can learn about plant water needs from plant labels, gardening books, or by reaching out to your local UC Master Gardener volunteers for support. Additionally, observing your plants and learning their symptoms of water stress, such as wilting or drooping leaves, can also help inform water management.
Watering Systems
Several watering systems can help manage water use in a garden. Drip irrigation is one of the most efficient methods. It delivers water directly to the roots of plants, minimizing evaporation and runoff. Soaker hoses, porous hoses that seep water along their length, are another good option for watering garden beds. Traditional sprinklers can be used, but they are less efficient because they tend to waste water through evaporation and runoff. Newer, more advanced systems include weather-based controllers that adjust watering schedules based on weather conditions, ensuring plants get the right amount of water without waste.
Irrigation Best Practices
Take a proactive role in water conservation by adopting best practices for irrigation. Watering early in the morning or late in the evening reduces evaporation, ensuring more water reaches the plants. Mulching the garden helps retain soil moisture and reduces the need for frequent watering. Regularly checking for leaks in the irrigation system and repairing them promptly can prevent water loss. Adjusting the watering schedule based on the season and weather conditions is also essential. During cooler months or after rainfall, plants need less water; in the hot summer, they may need more frequent watering.
Use Drought Tolerant Plants
One of the most environmentally responsible ways to conserve water in a garden is to use drought-tolerant and/or native plants. Drought tolerance reflects the ability of a plant to withstand less than optimal water supplies due to adaptive or avoidance mechanisms. While many native plants possess drought-tolerant traits and require less supplemental irrigation once established, many non-native plants Mediterranean-adapted plants also thrive on relatively lower water. It is important to remember that these plants require water regularly until their root structure is well established in landscape soil. Maintaining these plants with deep and infrequent irrigation once established is a great way to reduce landscape water use. By incorporating these plants into your garden, you're also providing habitat for local wildlife. This creates a beautiful, low-maintenance landscape that thrives with less irrigation.
Best Practices for Keeping Plants Alive During a Drought
During a drought or under water restrictions, it's essential to prioritize how you use water in the garden. Focus on watering the most valuable and vulnerable plants first, such as shade trees and young trees. Slow, deep watering is more effective than frequent shallow watering. This involves watering to a depth slightly below the plant root zone which encourages roots to grow deeper into the soil, making plants more drought-tolerant. Reducing the size of your lawn or replacing it with drought-tolerant ground covers can also save significant amounts of water. Additionally, using shade cloth or temporary shading can help reduce water loss by protecting plants from intense sunlight.
By understanding plant water use, choosing suitable watering systems, adopting best irrigation practices, using drought-tolerant plants, and implementing drought survival strategies, California home gardeners can maintain a healthy and beautiful garden while conserving water. Water management is beneficial for your garden and the environment, and is an especially important practice for Californians. Your conscious efforts in water management contribute to the sustainability of our environment.
To learn more please reach out to your local UC Master Gardeners Program.
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UC SAREP funds 8 sustainable food and farming projects
Projects will support socially disadvantaged farmers, increase urban access to healthy food and more
The UC Sustainable Agriculture Research & Education Program (SAREP) is pleased to announce the recipients of the Sustainable Agriculture and Food Systems 2024-25 Small Grants Program. This grant program will fund planning, research and education projects that support the development of sustainable community food systems and environmentally sound and economically viable farming enterprises.
Of the 33 eligible applications, eight applicants were selected to receive approximately $80,000 in combined funding to support their work. Individual grants are limited to $10,000. “The Small Grants Program is an important part of our mission,” said Ruth Dahlquist-Willard, interim director of UC SAREP. “By facilitating these grants, SAREP is able to support ANR in engaging a wide range of food systems stakeholders, outcomes show that a small financial investment can have a large impact in improving the lives of Californians.”
The eight recipients of this year's grants are:
Planning
Building Capacity and Resiliency Among Networks of Socially Disadvantaged California Farmers
Fresh Approach will establish a network of pooled learning and technical support that will aid emerging food-aggregation businesses in accessing sustainable market channels, including emergency food distribution. As part of the project, they will enhance an interactive GIS mapping tool of value chains to streamline market opportunities for socially disadvantaged farmers and aggregators. (Project lead: Andy Ollove, Fresh Approach)
Sustainable Urban Resident Food Gardens Expansion Planning Project
Growing Hope Gardens will systematize the process of outreach, discovery, design, planning and implementation in creating new urban resident food gardens. The project will document Growing Hope Gardens' garden development process into a training and implementation manual to more effectively duplicate food garden programs in more low-income urban communities. (Project lead: Carolyn Day, Growing Hope Gardens)
Research
Evaluating Best Management Practices for Cover Crops to Minimize Nitrogen Losses in California's Salinas Valley
This project will quantify the effectiveness of cover cropping at different planting times and termination dates to scavenge excess nitrogen in the soil and reduce nitrate leaching in a Salinas vegetable cropping system. The results will inform Ag Order 4.0 for cover crop credits and help stakeholders in the Salinas Valley better understand crop management for efficient nutrient cycling. (Project lead: Scott Fendorf, Stanford University)
Implications of American Kestrel Diet, Dispersal and Migration on Pest Control in Northern California Farming Systems
Investigators will study how the diet, post-breeding dispersal, and migration of nesting kestrels influences biological pest control on Northern California farms. The project will generate management recommendations for using the predatory bird for biological pest control in sustainable agriculture programs across California. (Project lead: Breanna Martinico, UC Cooperative Extension)
Education and Outreach
EAT! Community Farms Market Access and Promotion Project
This project helps socially disadvantaged and indigenous farmers in Riverside County create pathways for realizing economic return. EAT! will provide mentoring for marketing strategy development, connect farmers to buyers, promote the farmers market so it's more profitable for farmers, and provide a cooperative farm stand in the city of Norco for farmers to sell produce directly to consumers. (Project lead: Patrick Mitchell, Ecological Agricultural Training Cultural Center [EAT!])
Cultivating Cooperative Education, Stewardship and Connection at the Agroecology Commons Cooperative Incubator Farm
Agroecology Commons aims to address challenges faced by young, first-generation, BIPOC, queer and femme farmers at the Agroecology Commons Cooperative Incubator Farm in the Bay Area. The project will focus on education and outreach, providing technical assistance and training in regenerative agriculture practices such as soil health, pest management and crop diversification to socially disadvantaged farmers. (Project lead: Jeneba Kilgore, Agroecology Commons)
Signage and Mural Refurbishment for Southeast Asian Farmers to Improve Direct-to-Consumer Marketing
This project will build new, long-lasting farm signs for Southeast Asian farmers growing diversified vegetables and berries in the Sacramento region. Improving the appeal and durability of farm signs will increase the profitability of the farm stands as these resource-limited farmers rely on direct-to-consumer marketing strategies to promote their businesses. (Project lead: Margaret Lloyd, UC Cooperative Extension)
Community Nutrition Security and Education Program
Farm Discovery at Live Earth will increase access to organic produce for individuals and families experiencing food and nutrition insecurity in the Santa Cruz and Monterey Bay area. This will be accomplished through farming, outdoor education and nutrition education programs focusing on regenerative agricultural practices to connect youth and families to their regional agricultural and ecological systems. (Project Lead: Jessica Ridgeway, Farm Discovery at Live Earth)
The UC SAREP Small Grants Program has a big impact! Help us fund more projects that support sustainable community food systems and environmentally sound, economically viable farming enterprises. To support this program, please donate here. Choose SAREP Small Grants Program for the designation.
Sustainably manage pests using IPM!
In February we recognize Valentine's Day, President's Day, and Black History Month, but did you...
Sowerwine named SFS Strategic Initiative leader
In Northern California, she has collaborated with Karuk, Yurok and Klamath tribal leaders and community members to restore their food security. In the Central Valley, she spent years working with Southeast Asian farmers. More recently, Jennifer has been studying how community farms and gardens improve food security among at-risk people in the urban East Bay.
Jennifer's experience in designing community-led food systems projects with under-represented Californians will be informative as we strive to solve new food-related challenges. We are fortunate to have her lead us in this role.
Jennifer succeeds Rachel Surls, who has led the Sustainable Food Systems Strategic Initiative for the past 18 months and is retiring this month from her 35-year career.
UC ANR's Strategic Initiative leaders work with their respective strategic initiative panels to improve communication, highlight research/extension gaps, and conduct detailed panel meetings. SI Leaders represent their panels, program teams and statewide programs/institutes at Program Council, providing programmatic input into resource allocation recommendations.
Jennifer joins SI leaders Helen Dahlke for Water Quality, Quantity and Security; Josh Davy for Sustainable Natural Ecosystems; Tom Turini for Endemic and Invasive Pests; and Steven Worker for Healthy Families & Communities.
Brent Hales
Associate Vice President
No-till annual wheat better for soil health in California’s climate
One more reason to adopt sustainable cultivation
California wheat farmers could both maintain their yields and improve soil health by growing annual wheat without tilling the soil year after year.
This could be one more encouragement to farmers to adopt a sustainable practice commonly called conservation tillage, no-till or minimum-till cultivation, impacting how we grow a grain that supplies about 20 percent of the calories and protein for people around the world.
A new study, by a team led by Mark Lundy, University of California Cooperative Extension specialist in UC Davis' Department of Plant Sciences, offers new insight for decades-long discussions around soil conservation, sustainable agriculture and climate-warming emissions related to growing our food. The study has been published in the journal Soil and Tillage Research. For the first time, researchers have shown that annual wheat that is not tilled each year is better for stashing carbon in the soil than perennial wheatgrass, while still yielding more crop in Central California.
Previous studies have looked at annual wheat that is tilled each year, annual wheat that is not tilled, and a cousin species, perennial intermediate wheatgrass (trademarked Kernza), which also is not tilled. But until now, no one has looked at all of the benefits and trade-offs together. Most importantly, “no one has ever controlled for tillage,” Lundy said. “And, no one has compared annual wheat to perennial intermediate wheatgrass over multiple years in a Mediterranean climate, which is what we have in California.”
This study also is unique because it delves into the deeper question of what is going on in the soil that drives the different results for carbon there. Soil carbon reflects various processes linked to plant activity and soil health. Measuring the different forms of soil carbon may also signal whether a farming system is accumulating carbon in the soil over time – a plus for reducing climate-warming gases in the atmosphere.
“Measuring soil carbon is complex and nuanced,” said Kalyn Taylor, the lead author on the paper. “We started this experiment because we wanted to know whether and how plant activity and tilling or not tilling would affect the carbon story belowground in California's climate.”
“When we started this study, we thought the crop being perennial or annual would drive the differences in carbon storage in the soil,” Lundy added. Specifically, they had expected perennial wheatgrass would lead to more carbon in the soil because of its deeper, better-established root system. “But that's not what we found,” he went on. “What we found was, it was the lack of tillage, plus the level of productivity of common annual wheat, that made the difference in soil carbon here in California.”
Soil carbon in annual vs. perennial grain
In 2017, Lundy, then-graduate-student Taylor, UC Davis Professor Emeritus Kate Scow and others on the team started measuring different forms of soil carbon in test plots at Russell Ranch, west of campus. Plots were planted with annual wheat that was tilled each spring, annual wheat that was not tilled and perennial intermediate wheatgrass (Kernza) that also was not tilled.
Each year, the researchers measured the carbon present in the soil, the amount of soil organisms (which have carbon in their bodies) and the amount of material the plants created.
At the end of three growing seasons, they found that land planted with no-till, common, annual wheat had the highest amount of soil organisms, measured as biomass, of the three treatments.
The researchers also found soil carbon is more likely to remain stable in the no-till, annual plots, compared to both tilled wheat and wheatgrass.
In addition, the no-till, annual wheat produced plant material more consistently than the perennial wheatgrass across the three years, which saw variation in rainfall.
“Overall, annual wheat grown without soil disturbance or tillage had both higher productivity and higher potential for storing carbon in the topsoil than perennial wheatgrass in our Mediterranean climate,” Lundy said.
Related research
“No-till annual wheat increases plant productivity, soil microbial biomass, and soil carbon stabilization relative to intermediate wheatgrass in a Mediterranean climate,” is online now and will be published in the January 2024 edition of Soil and Tillage Research.
The team also found that tilled annual wheat vs. Kernza stores total carbon at different depths in the soil profile and hosts distinct soil fungal communities, primarily in the root zone and topsoil: Taylor, K., Samaddar, S., Schmidt, R., Lundy, M. and Scow, K., 2023. Soil carbon storage and compositional responses of soil microbial communities under perennial grain IWG vs. annual wheat. Soil Biology and Biochemistry, p.109111.
Previous work comparing the perennial grain known as intermediate wheatgrass (trademarked Kernza) to annual wheat had not distinguished the extent to which soil health benefits are a function of the perennial nature of the crop. Read the story here.
This story was originally published on the UC Davis News site.
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