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In-a-Nutshell - Nut Culture
Dried Plum News - Prune Culture
Olive Notes - Olive Culture

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May 2025Archived

Field picture submitted by Elizabeth Fichtner

Publications

Pest Notes
- Olive Knot
- Black Scale
UC Pest Management Guidelines (UC Statewide IPM Project Web Site)
UC Cooperative Extension Cost and Return Studies
- Almonds
  Double Line Drip Irrigation. Southern San Joaquin Valley. 2016 PDF
- Almonds
  Flood Irrigated. San Joaquin Valley North. 2011. PDF
- Almonds
  Micro-sprinkler. San Joaquin Valley North. 2016. PDF
- Olive Oil
  Super High Density. San Joaquin Valley 2007. PDF
- Olives - San Joaquin Valley. 2005 PDF
- Pecans - Sacramento/San Joaquin Valley - 2005. PDF
- Pistachios
  Low Volume Irrigation - San Joaquin Valley South. 2015. PDF
- Walnuts
  Late Leafing - Lateral Bearing. San Joaquin Valley North. 2017. PDF
- Walnuts
  Micro-Sprinkler Irrigation - San Joaquin Valley North. 2007 PDF

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Assessing water quality & conservation attitudes

Summary: Water supplies are critical to urban populations in southern California. These supplies and the associated ecosystems are impacted by residents' decisions with respect to water conservation, pollution prevention, and landscape plants.

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Completed projects

Completed Projects Estimating soil nitrogen mineralization for fertilizer management Due to high groundwater nitrate concentrations, California growers are facing increasing pressure to improve nitrogen use efficiency in crop production to reduce nitrate leaching.

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The impact of Salton Sea water management on air quality

Summary: The Salton Sea, the largest lake in Southern California, provides critical wildlife habitat. While it was once part of a vast inland sea, more recently water in the lake has come largely from irrigation runoff and leaching.

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Metagenomic analysis of groundwater wells

Summary: California uses approximately 15 billion gallons of groundwater per day, more than any other state in the United States. Currently, groundwater accounts for about half of Californias water supply.

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Monitoring tree survival and performance in street-side stormwater management facilities

Summary: Street-side stormwater management facilities are increasingly common as cities try to find ways to increase local water recharge. These facilities are often planted with vegetation that includes ornamental trees. However, little is known about the survival, growth, and health of the trees.

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Quantifying methylmercury loads from California rice fields

Summary: Methylmercury is found in low or no oxygen environments and can be toxic to wildlife at low levels. Studies from the Yolo Bypass in the Sacramento-San Joaquin Delta suggest that rice systems may be a significant source of methylmercury in the Delta.

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Trends in limiting high-volume hydraulic fracturing in California

Summary: High-volume hydraulic fracturing is a relatively new and controversial form of natural gas and oil drilling that is poised for a boom in California. This type of fracking is water-intensive and could exacerbate water stress.

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Drought and Water Management Tip Sheets

Water and Drought Information | Experts Water management strategies are always critical in California.

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Water and drought information-agriculture

Water and Drought Information | Experts Drought Tips Series for Growers - a research-based, peer-reviewed series on the latest drought information for specific crops as well as irrigation and other approaches Tools for: Calculating irrigation uniformity and Calculating leaching fraction to manage ro...

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Water and drought information-rangelands

Water and Drought Information | Experts Updated ranch/rangeland management information Livestock and range in Sonoma County/north coast Drought survival workshop for ranchers - video from 1/29/14 workshop...

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