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Posts Tagged: Cover crop
CASI’s Mitchell announces long-term NRI Project publication in Cal Ag on Don York’s KMJ580 AM morning “Ag Report” radio program, May 23, June 4, and June 6, 2024
In an effort to extend information on CASI's twenty-year conservation agriculture study that has been conducted at the University field station in Five Points, CA and that has been recently published in the journal, California Agriculture, Jeff Mitchell provided three radio interviews on the morning Ag Report that Don York produces for KMJ580 AM each morning out of Fresno. The segments aired on May 23rd and on June 4th and 6th, 2024 and are available below. Mitchell shared findings of the long-term “NRI Project” that since 1998 has examined four production systems – standard tillage without cover crop, standard tillage with cover crop, no-till without cover crop, and no-till with cover crop.
The NRI Project started as an effort to determine the potential of reduced disturbance tillage in terms of generating or producing less dust and in the early 2000s found that dust can be significantly reduced by as much as 80% with a variety of reduced tillage practices relative to standard tillage techniques that have been widely used in annual crop fields throughout the San Joaquin Valley since the early 1930s. The recent findings from the unique long-term study have shown that several soil health indicators including aggregation, water infiltration, biodiversity, and surface carbon were improved through the long-term use of cover crops with reduced disturbance tillage.
In the interviews, Mitchell points out that the systems that were evaluated and developed in the NRI Project were not at all easy to implement and required considerable trial-and-error effort to achieve. Yields, for instance, of cotton in the early years under the high residue, no-till cover crop system lagged behind the standard tillage, however once effective planting techniques were learned to establish the cotton crop. There were no yield differences between the two tillage systems for the next several years.
The results of this study that included 18 coauthors can be seen at https://doi.org/10.3733/001c.94714
Jeff Mitchell on KMJ Ag Report 5-23-24
Jeff Mitchell on KMJ Ag Report 6-4-24
Jeff Mitchell on KMJ Ag Report 6-6-24
Screenshot 2024-06-07 090600 Cal Ag Screenshot Cal Ag
Cover Crop Field Day - May 28
Come learn about what cover crops grow in Ventura and how they can be managed
The first half of the event will take place Hansen REC featuring 19 diverse cover crop s and croip crop mixes with unique features and benefits. The second half will take place at the Rodale Institute COC showcasing the innovative roller crimper a
$1.7M granted for climate-smart planning led by UC ANR scientists
In California, natural and working lands make up 95 million acres of the state and play a vital role in building resilience to the impacts of climate change. University of California Agriculture and Natural Resources was awarded $1.7 million for the California Next Generation and Equitable Climate Action Plan, as part of the state's Natural and Working Lands Climate Smart Strategy and California's 30x30 Initiative, an effort to conserve 30% of the state's lands and coastal waters by 2030.
Natural and working lands include both unmanaged and managed areas actively used for agriculture, forestry or production purposes.
Chandra Richards, UC Cooperative Extension agricultural land acquisitions academic coordinator for Southern California, and Cristina Murillo-Barrick, UCCE's Black, Indigenous and People of Color community development advisor for the Bay Area, are leading the California Next Generation and Equitable Climate Action Plan project.
To build capacity and technical assistance for climate-smart action planning, Richards and Murillo-Barrick will use the Climate Smart Land Management Program funding, awarded through the California Department of Conservation, to focus on two of the most pressing climate action issues: equitable land access and land management diversification.
According to the 2022 U.S. Department of Agriculture census, demographic data indicates that California agricultural land ownership and production is concentrated within an aging and mostly White demographic. However, research suggests diverse management practices promote healthy landscapes. This has been shown to benefit the environment, human health and climate resilience in multiple ways.
For this reason, this project centers on “historically underrepresented communities,” a term that includes California Native American Tribes, communities of color, landless farmers, immigrant and non-English speaking communities and other agency-designated minority groups (racial, ethnic and non-male groups, socially disadvantaged farmers and ranchers, and California designated severely disadvantaged communities).
Focusing on Southern California, UC Cooperative Extension scientists will identify barriers to land access, management and opportunities to increase land manager diversity. They also will engage historically underrepresented communities in coalition building, capacity assessment and climate action planning.
Within the last few decades, Californians have faced increased ecosystem stressors and decreasing diversity of natural systems. This pattern continues to damage already-vulnerable communities (disproportionately historically underrepresented communities), while also worsening and intensifying climate impacts, including drought, wildfire, flooding and disease. Overcoming these kinds of systemic and structural challenges will require the next generation of land managers to reflect California equitably, while preparing them to take on climate resilience. The project will determine clear solutions and plans that enable long-term, strategic land use and protection.
To do this work, UCCE is collaborating with the Community Alliance with Family Farms (CAFF), California Association of Resource Conservation Districts (CARCD) and the California Bountiful Foundation, all of whom serve as subgrantees and will deepen connections with communities.
Organizations like CARCD have long served as “boots on the ground” personnel and have close relationships with landowners and land managers. “RCDs have been hearing the land equity need for a long time and are actively collaborating with different partners to tackle this pressing issue,” said Qi Zhou, program manager of Justice, Equity, Diversity and Inclusion at CARCD and member of the Strategic Growth Council Land Equity Task Force.
“California RCDs are excited about this project because it will allow major California agriculture and conservation partners to collaboratively develop plans and implement projects centering on equity land access and land management diversification,” Zhou added.
Project lead Richards said $270,000 of the grant will be reserved for new partnerships with organizations in Southern California that have experience with, and strong ties to, historically underserved communities.
UC ANR is collaborating with the California Department of Food and Agriculture as well as California Climate and Agriculture Network (CalCAN), and World Be Well, a Southern California nonprofit.
Tawny Mata, CDFA's director of the Office of Environmental Farming and Innovation, described technical assistance providers as being grounded in their local agricultural communities and recognized their importance to partners in the success of CDFA's incentive programs.
“When we do succeed in reaching historically underserved farmers and ranchers with our grant programs, it is often with the thoughtful support and planning of a technical assistance provider,” Mata said. “I look forward to this project helping us refine our own technical assistance funding programs and bringing technical assistance providers together to network and share best practices for improving land access and promoting climate-smart agriculture.”
“The successes of this project will elevate the voices of historically underrepresented communities, strengthening efforts in these communities to support climate action,” said Richards. Additionally, the project will increase sharing of regional reports, needs assessments and community plans surrounding climate-smart management practices. Finally, it will boost technical assistance for these groups specifically.
To learn more about the Climate Smart Land Management Program and this year's awardees, visit:
2024 Irrigation and Nutrient Management Meeting
2024 Irrigation and Nutrient Management Meeting
Tuesday, February 20
7:55 am to 1:30 pm
Habrá traducción al Español
7:30 Sign-in and refreshments
7:55 Introduction
8:00 Managing runoff during the growing season and winter.
Michael Cahn, UCCE Irrigation Advisor, Monterey County
8:30 Satellite estimates of crop water use on the central coast and OpenET
Lee Johnson, CSU Monterey Bay/NASA
9:00 Update on using high carbon amendments for reducing nitrate leaching during the winter
Richard Smith, UCCE Vegetable and Weed Emeritus Advisor, Monterey County
Joji Muramoto, UC Santa Cruz, Organic Production Specialist
9:30 Cover crops for reducing winter nitrate leaching and controlling storm water runoff.
Eric Brennan, Research Horticulturist, USDA ARS
10:00 Break
10:15 Ag Order requirements for the upcoming year
Sarah Lopez, Executive Director, Central Coast Water Quality Preservation Inc.
10:45 UCANR Nitrogen and Irrigation Initiative: Opportunity for technical assistance.
Aparna Gazula, UCCE Small Farm Advisor, Santa Clara County
11:00 Using CropManage to help with Ag Order compliance.
Michael Cahn, UCCE Irrigation Advisor, Monterey County
11:25 DPR Surface Water Protection Program: An overview of ag. monitoring on the Central Coast.
Pedro Lima, Sr. Environmental Scientist Cal DPR
11:50 Introduction to pump efficiency
Bill Green, Fresno State University, Center for Irrigation Technology
12:00 Pizza and Salad Lunch (free!)
12:45 Demonstration of pump efficiency and variable frequency drives (Parking lot)
Crystal Sandoval-Leyva, Fresno State University, Center for Irrigation Technology
2:15 Adjourn
CCA and DPR continuing education credits have been requested
For more information, contact Michael Cahn @ 831-759-7377, email: mdcahn@ucdavis.edu
Strip-till cover crop tomato crop trialed in Huron, CA, February 2, 2022
A unique - dare we say - "never before attempted in the region," effort to precede strip-tilled tomatoes with a mowed vigorous winter cover crop was conducted in one of the fieldsofWoolf Enterprises, a major tomato and other row crop farm just south of the small San Joaquin Valley town of Huron, CA in the spring of 2022. Several Woolf agronomists including Rick Blankenship and Shane Bickner, along with agronomy consultant,Cary Crum,of Agrotechnovation, oversaw the effort. The cover crop was a short-season mix that ended up being largely dominated by triticale, was mowed by a flail mower that had been fitted with a horizontally mounted circular chopper to fill in a 'skip' area in the flails behind the center of the unit. Then,an Orthman three-row 60" spacing strip-tiller followed the mowing ahead of tomato transplanting. Two short video files are linked here that show the mower and the strip-tiller in action. After this first year of trying the cover crop strip-till system, one agronomy manager at Woolf put it this way,
"There are a lot of extra management required, but worth the effort. The learning curve is steep and ridden with holes to fall into, but the soil changes behind the multispecies cover crops is impressive. I wouldn't recommend it to someone who doesn't tolerate some failure along the way. Less passes to get beautiful tomato beds behind it.
I'm not sure I've bought into the strip till on the flat tomato beds yet because of the necessary harvester adaptations or the strip till beds because of residue but I think with some more adaption we could make it work.
I really like the multi species cover crop as a rotation partner when it's green chopped early."
More to come from this exciting, innovative work soon!
