- Author: Jeffrey P Mitchell
May 17, 2024
Findings from twenty years of soil health research in Five Points, CA have been published in the University of California's California Agriculture peer-reviewed journal's May 1, 2024 issue. https://doi.org/10.3733/001c.94714.
This work has been a large collaborative effort involving twenty-one UC and non-UC coauthors. It began in 1998 initially as an effort to evaluate the potential of reduced disturbance tillage systems to reduce dust emissions from annual cropping systems that are common in California's San Joaquin Valley. It long-term nature however, allowed it to become a unique site for also monitoring changes in soil properties and function under four experimental systems: conventional tillage with no cover crop, conventional tillage with cover crop, no-till with no cover crop, and no-till with cover crop. Crops rotated between tomato and cotton initially, but later during the study, the rotation was diversified to include melons, sorghum, and garbanzo beans.
The work involved the Soil Health Institute's Shannon Cappellazzi, who sampled at the site in 2019. That sampling event led to the site becoming part of a multiple-publication series of articles that reported on soil health impacts in 124 long-term study sites across North America.
https://soilhealthinstitute.org/news-events/a-minimum-suite-of-soil-health-indicators-for-north-american-agriculture/
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- Author: Jeffrey P Mitchell
Robert Willmott not only recently wrapped up his MS thesis research at Fresno State, but he also works full-time as the Farm Manager for his college's student ag farm, is married, and has two small children as well! A full plate, to say the least. In addition to all this, he recently told his story at Fresno State in a 3-minute video that is now posted at You Tube https://www.youtube.com/watch?v=Uo6xZh5sGdA
Working in the Department of Plant Science in the Jordan College of Agricultural Sciences and Technology under his award-winning and Fellow in the American Society of Agronomy major professor, Anil Shrestha, Robert presented his thesis work in an exit seminar on May 14th on campus ahead of being awarded this MS and graduating later this month. His work consisted of a multiple-year study to evaluate the potential of using a roller crimper and strip-tillage for producing silage corn under center pivot irrigation, a new systems approach for San Joaquin Valley dairies that rely on winter and corn silage for animal feed materials. The several years of the study saw quite good success in terminating a variety of winter cover crop mixes using the roller crimper, strong weed suppression during the early corn season, and corn yields comparable to industry standards and the conventional control system that was part of the evaluation.
The work is now being prepared for submission to a scientific journal later this summer. A three-minute You Tube video summarizing Robert's work may be viewed at the link https://www.youtube.com/watch?v=Uo6xZh5sGdA
/span>- Author: Jeffrey P Mitchell
April 12, 2024
The UC ANR CASI Center hosted five members of the Soil Health Institute's US Regenerative Ag Cotton Program in the San Joaquin Valley on April 11th and 12th, 2024. The Soil Health Institute (SHI) is a non-profit organization based in Morrisville, NC that conducts research and extension education related to soil health management. Five SHI members, Diana Bagnall, David Lamm, Jessica Kelton, Emily Ball, and Nate Looker, took part in the two-day tour of six San Joaquin Valley farms and the California Cotton Ginners and Growers Associations. San Joaquin Valley farmers who hosted the SHI members included Mark Borba of Borba Farms in Riverdale, CA, Mark McKean of McKean Farms also in Riverdale, Tony Azevedo of Stone Land Company in Stratford, CA, Cannon Michael and Derek Azevedo of Bowles Farming in Los Banos, Gary and Mari Martin of Pikalok Farms in Mendota, and Gary Smith of Ingleby Farms in Burrel. Roger Isom, President of the CCGGA in Fresno, also hosted the SHI guests.
SHI requested help from CASI with the cotton tour and discussions that took place as an effort to expand their national Regenerative Ag Cotton Program to California in 2024. The tour provided excellent opportunities for SHI to learn about California cotton and to make connections with leading cotton farmers in the San Joaquin Valley who may become part of the baseline soil sampling project that SHI is looking to conduct with cotton producers this year.
In addition to the farmers who generously hosted the SHI guests, several other local California folks including Cary Crum, Kimber Moreland, Rob Roy, Jacob Wright, and Olivia Peters helped CASI's Jeff Mitchell in sharing information about California cotton systems.
- Author: Jeffrey P. Mitchell
January 20, 2022
Undergraduate student, Jennifer Valdez-Herrera, took home the first prize award in this year's student poster competition of the California Weed Science Society that was held January 19th - 21st at the Hyatt Regency Hotel in Sacramento, CA. Her poster titled, Potential of roller-crimper technology for weed suppression in annual crops, reported on the first four years of a study that has been conducted on the Fresno State campus under a center pivot irrigation system. The rolled cover crops are followed by strip-tillage planted silage corn. Five mixes, rye, an ultra high diversity mix from Green Cover Seed in Bladen, NE, a multiplex mix from Lockwood Seed and Grain in Chowchilla, CA, a faba bean and Phacelia combination, and a three-way mix of rye, peas, and purple vetch are replicated three times in about 300 foot strips throughout the field. A copy of Valdez-Herrera's poster is provided below and a short 56-second video showing the current stage of growth of the 2021 - 2022 cover crops may be seen at
- Author: Jeffrey P. Mitchell
January 20, 2022
Year 5 of a major cover crop roller crimper study is underway on the Fresno State campus in the school's center pivot field under the monitoring supervision of Dr. Anil Shrestha and his undergraduate student research assistant, Jennifer Valdez-Herrera and graduate student, Robert Wilmott. The project repeats five cover crop mix treatments (rye, an ultra high diversity mix provided by Green Cover Seed of Bladen, NE, a Multiplex mix of Lockwood Seed and Grain in Chowchilla, CA, a two-species mix of faba bean and Phacelia, and a three-way mix of rye, peas, and purple vetch. A short, 49-second video showing Valdez-Herrera and Wilmott and the stage of growth of the cover crops on January 20, 2022 can be viewed at the You Tube link
https://www.youtube.com/watch?v=_E42GAg5Fzs
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