California Fruit and Vegetable

Tag: UCANR

  • New Avocado Study Outlines Costs & Returns of High-Density Plantings

    Growers considering producing avocados in San Diego County with high-density plantings now have help to determine the economic feasibility. A new study on the costs and returns of establishing and producing avocados in San Diego County has been released by UC Agriculture and Natural Resources’ Cooperative Extension, UC Agricultural Issues Center and the UC Davis Department of Agricultural and Resource Economics.

    A worker prunes weak tree branches to improve sunlight penetration in a high-density avocado orchard.

    Avocado has been one of the prominent crops produced in Southern California since the early 1950s. California avocado production peaked in 1987-88 with about 76,300 acres. San Diego had been the leading producer accounting for about 60% of the acreage.

    “Beginning in the early 1980s, there has been a continuous decline of acreage and production of avocados in San Diego County, said Etaferahu Takele, UC Cooperative Extension farm management advisor for Southern California and co-author of the study. “This is mainly because of the expansion of urban development that has increased the cost of producing the crop and especially the cost of water, reaching to up to $2,000 per acre feet in 2020.”

    The same amount of water was sufficient for the high-density avocados as it was for the traditional planting (Photo by Gary Bender).

    High-density planting increases profitability of avocado production given there is suitable land for high-density orchard development.

    Although the cost of water accounts for 44% of the total production cost in the high-density planting, the water cost is proportionally less than in the conventional planting of 145 trees per acre when distributed over a higher yield per acre, the authors write.

    Their cost analysis describes production operations for avocados planted at 430 trees per acre, with an expected life span of 40 years. The study includes a detailed summary of costs and returns and a profitability analysis of gross margin, economic profit and a break-even ranging analysis table, which shows profits over a range of prices and yields. Growers can identify their gross margin and returns to management based on their yield and prices received.

    UC Cooperative Extension advisor Gary Bender checks sunlight penetration in a high-density avocado orchard.

    Input and reviews were provided by a UC Cooperative Extension farm advisor and grower cooperators in San Diego County. The authors describe the assumptions used to identify current costs for avocado establishment and production, material inputs, cash and non-cash overhead.

    The new study, “Avocado Establishment and Production Costs and Profitability Analysis in High Density Planting, San Diego County-2020,” can be downloaded for free from the UC Davis Department of Agricultural and Resource Economics website at http://coststudies.ucdavis.edu and UCCE Riverside County Farm Management website at https://ucanr.edu/sites/Farm_Management/Costs_and_Returns. Sample cost of production studies for many other commodities are also available on the websites.

    For additional information or an explanation of the calculations used in the studies, refer to the “Assumptions” section of the report or contact Takele at (951) 683-6491 Ext. 243 or ettakele@ucanr.edu or Donald Stewart at the UC Agricultural Issues Center at destewart@ucdavis.edu. — By Pamela Kan-Rice, UCANR

  • Farmer’s Inspiration Leads to Squash Donation to Central CA Food Bank

    West Side farmer John Diener had flash of inspiration. Why not plant butternut squash?

    Diener is a long-time research cooperator with UC Cooperative Extension specialist Jeff Mitchell, who has studied innovative, sustainable farming practices for 21 years at the UC West Side Research and Extension Center under four different treatments: no-till plus cover crops, no-till with no cover crops, conventionally tilled with cover crops and conventionally tilled without cover crops.

    Since it was established, the research plots have been managed in an annual rotation of cotton, processing tomatoes and, more recently, sorghum, garbanzo beans and melons. When trying to decide what crop to bring into the rotation for 2020, Diener thought of butternut squash, a relatively large, thick-skinned squash that has little pest and disease problems and a long-shelf life. He suggested the squash could be donated to the Central California Food Bank and made available to local families in time for Thanksgiving and Christmas.

    CCFB provides food to more than 220 agencies in Fresno, Madera, Kings, Kern and Tulare counties, serving more than 280,000 people each month. Last year, CCFB supplied over 40 million pounds of food in all.

    Diener arranged for butternut squash seed to be donated by David Bodine of AgSeeds. He generously paid for several days of labor to harvest the crop. Diener contacted family friend Joan Minasian, who serves on the Food Bank board, to make arrangements for delivering 101 bins of squash – more than 70,000 pounds – to the food bank’s Fresno distribution center.

    The front entrance to the Central California Food Bank in Fresno

    “The Central Valley Food Bank is working on diversifying the food we offer in meal boxes and distributions,” Minasian said. “I’m really proud of the food bank’s efforts to increase healthy foods. We’re always looking for farmers to partner with.”

    Butternut squash, a winter squash, has a 90-day shelf life without refrigeration. It is grown in the summer; the name is derived from the fact that the mature vegetable can be stored for winter eating.

    In addition to supporting farmers with research and advice, UC Cooperative Extension offers nutrition education programs to low-income Californians. Deepa Srivastava – UCCE nutrition, family and consumer sciences advisor for Kings and Tulare counties – manages two programs that extend information to families on healthy eating, food safety, food resource management, gardening, physical activity and youth engagement.

    Srivastava said butternut squash is a nutritious addition to family diets. The vegetable is a good source of vitamin A and vitamin C, and also supplies vitamin B-6, protein, fiber, magnesium, potassium and iron.

    The squash’s buff exterior protects golden flesh that is nutty and sweet. It can be baked, boiled or grilled whole or chopped. Cooked squash can be pureed for soup or baby food, added to casseroles, pies, salads and stuffing. The cooked flesh adds beautiful fall color to everyday meals or holiday spreads.

    Roasted butternut squash

    One easy way to prepare butternut squash is roasting in the oven. Preheat the oven at 350 degrees. Carefully cut the squash in half and scrape out seeds and strings with a spoon. Place cut side up in an oven-safe pan, then brush the flesh lightly with olive oil. Season to taste with salt, pepper, cayenne pepper, fresh or dried herbs and spices. Bake for one hour, or until it can be easily pierced with a fork. — By Jeannette Warnert, UCANR Communications Specialist

  • UC ANR Study Outlines Costs & Returns of Producing Lemons in Southern CA

    A new study on the costs and returns of establishing and producing lemons in Ventura County has been released by UC Cooperative Extension in Southern California and UC Agricultural Issues Center, both part of UC Agriculture and Natural Resources.

    “Coastal agriculture is always in transition and as strawberries and vegetables become less profitable due to markets and labor availability, lemons have returned as a potentially profitable alternative to those crops,” saidBen Faber, UC Cooperative Extension farm advisor for Ventura County and coauthor of the study.

    California lemon acreage was at roughly 47,000 acres in 2018-19, of which Ventura County accounts for 31%, according to the 2019 Ventura County Crop Report. Ventura County was growing lemons on 14,407 acres in 2019.

    “The profitability of lemon production depends on the price of land,” said Etaferahu Takele, UC Cooperative Extension farm management advisor for Southern California, another coauthor of the study. “If the price of land continues in its current trend, it could be prohibitive for new entrants to make a profit and limit further expansion of lemon production in the county.”

    Their cost analysis describes production operations for Eureka lemons on macrophylla rootstock, which are planted at 155 trees per acre with an expected life span of 40 years.

    The study includes a detailed summary of costs and returns and a profitability analysis of gross margin, economic profit and a break-even ranging analysis table, which shows profits over a range of prices and yields.

    Input and reviews were provided by Ventura County farm advisor and grower cooperators. The authors describe the assumptions used to identify current costs for lemon establishment and production, material inputs, cash and non-cash overhead.

    The new study, “2020 – Sample Costs to Establish and Produce Eureka Lemons in Ventura County,” can be downloaded for free from the UC Davis Department of Agricultural and Resource Economics website at http://coststudies.ucdavis.edu and the UCCE Riverside County Farm Management website at https://ucanr.edu/sites/Farm_Management/files/338947.pdf. Sample cost of production studies for many other commodities are also available on the websites.

    For additional information or an explanation of the calculations used in the studies, refer to the section of the report titled “Assumptions” or contact Takele at (951) 683-6491 Ext. 243 ettakele@ucanr.edu or Donald Stewart at the UC Agricultural Issues Center at (530) 752-4651, destewart@ucdavis.edu.

    For information about production of lemons in Ventura County, contact Faber at bafaber@ucanr.edu. — By Pamela Kan-Rice, UCANR

  • Six Ways to Improve Pesticide Sprayer Calibration/Coverage

    Are you not seeing the results you expected in your latest fungicide/insecticide application? Watch this brief interview with Peter Ako Larbi from the UC Cooperative Extension who shares several considerations on how growers can improve their pesticide spray coverage in their orchard or vineyard.

  • Spotted Wing Drosophila Control in Cherries

    If the birds don’t get to your cherries, Spotted Wing Drosophila will, injecting their larvae right into the fruit. Watch this brief video with UC Cooperative Extension Specialist Kent Daane as he shares how to manage this pest that has managed to spread all over the United States. Read more about orchard pest and disease management in California Fresh Fruit Magazine.

  • Managing Cytospora Canker in Prunes

    Cytospora Canker has become a more prevalent problem for prune growers in recent years, and although pruning it out of the orchard is the number one priority regarding treatment of it, there are a few other practices that can be applied to mitigate this fungal pathogen.  Watch this brief interview with Franz Niederholzer, Farm Advisor from the UC Cooperative Extension, as he shares some ideas.

  • How to Control Black Heart in Pomegranate

    With pomegranate harvest approaching, growers may be wondering how much fruit they are going to lose this year to “Black Heart” fruit rot.  But what causes this spoiling of the fruit and how can it be prevented or minimized?  Watch this brief interview with Plant Pathologist Themis Michailides at UC Davis to find out.  Read more about orchard pest and disease management in California Fresh Fruit Magazine.

  • How to Control Grubs in Blueberries: Organic & Conventional Methods

    Masked Chafer (AKA white grubs) have been problematic for blueberry growers, particularly in the Central Valley of California.  The good news is that researchers and entomologists have come up with both organic and conventional methods treatments for these soil pests.  Watch this brief interview UC Cooperative Extension Farm Advisor David Haviland to learn about these options and read more about it in California Fresh Fruit Magazine.

  • How to Control Thrips in Blueberries

    Citrus thrips have been a major nuisance for California blueberry growers, but how do you keep them under control and when should you apply crop protection materials? Is there an organic treatment available? Watch this brief interview UC Cooperative Extension Farm Advisor David Haviland as he answers all these questions. Read more about blueberry pest management in California Fresh Fruit Magazine.