A new publication, "How to Attract and Maintain Pollinators in Your Garden," (Publication 8498) has been added UC Agriculture and Natural Resources (ANR) catalog. The document is a collaboration of UC experts which includes an entomologist, laboratory assistants, landscape designer, photographer, and pomology expert.
Pollination is crucial to the survival of much of our ecosystems and maintaining viable environments for them to thrive provides not only benefits to personal outdoor space, but adds to the well being of the community at large.
This publication focuses on ways to make your garden and outdoor environment, including avocado orchards more attractive to pollinators by identifying pollinators and the plants and landscaping practices that appeal to them.
ANR Publication 8498 is free of charge and available as a downloadable PDF.
You can download this publication here.
I've been getting calls and have gone out to see several avocado orchards in the Ventura/Santa Barbara area and the comments are that the trees look worse this year than they normally do. When I see the trees, it's clear that they don't look in the best shape. This time of year, when there are old leaves that have accumulated salt all through the irrigation period and the trees are getting ready to flower, the leaves just don't have much energy. Also, two years of drought with no rain, means that salts have probably accumulated more by this time of year, than in a year when we do have “normal” rain to leach the soil. The accumulated salts can lead to water stress which also brings on stem and leaf blight, along with salt burn. With the bicarbonates in the water, the pH may have rise as well, inducing some iron chlorosis. Compounding the leaf damage is some frost burn, which was not cold enough to kill the leaves. Any dead tissue, also makes the leaves look more ratty, because with Santa Ana winds earlier, those dead areas have often blown out, making them look like they have been nibbled on by insects. Further adding to the stress was a huge crop year that put a lot of stress on the tress. When clearing the leaves to look at roots, it has often been hard to find viable roots. All these stresses are going to make the trees more susceptible to root rot. So it's going to be necessary for growers to keep their eyes out for further disease symptoms and to be ready to treat with phosphites when the soil warms up enough for the roots to start growing again.
UC Riverside and the Citrus Research Board partner to provide:
UC Riverside Citrus Day for Professional Industry members
Thursday, February 20, 2014
8 a.m. to 3:00 p.m.
UCR Agricultural Operations, Riverside, California
For information: (951) 827-5906
Please join us for the 3rd Annual Citrus field day designed for citrus growers and citrus industry representatives. Pending approval, we will be offering 2.5 hours of California Continuing Education
Credit for Pest Control Advisers (PCA).
Presentations, field tours and topics of interest:
Pesticide safety – Vince Samons
Update on ACP and HLB in California – Joseph Morse
Phytophthora diseases of citrus – Jim Adaskaveg
Lemon Varieties for the Desert –Glenn Wright
Understanding factors that influence the eating experience in citrus – David Obenland and Mary Lu Arpaia
Citrus Variety Collection tours of new cultivars and “unforbidden” fruits – Tracy Kahn, David Karp, Tom Shea, and Robert Krueger
Update on Citrus Rootstock Field Demonstration – Mikeal Roose
Barbeque Lunch included.
Registration: $18. Deadline: February 14, 2014. There will be no walk-in registrations. We will email directions and updates to all who have registered.
Space is limited so please register early.
Please register online at
To make a tax-deductible contribution to the
Citrus Variety Collection Endowment fund or the Citrus Research Center & Agricultural Experiment Station support fund go to the following link and select College of Natural and Agricultural Sciences then select the specific fund:
A recent visit with Spanish researchers and packers was of interest. Virtually the whole industry uses a snapping method to harvest fruit. It is faster and often leads to fewer fruit rots than with clipping. In a past article by Reuben Hofshi in the CA Avocado Commission's AvoResearch is a review of the practices and results in various countries. It was well worth rereading:
- Author: Brad Hanson, UC ANR Weed Specialist
Here is an updated guide for herbicides that are registered for citrus, avocado and a few other tree crops.