Articles in the November-December, 2013 issue include:
Rehabilitating Frost Damaged Citrus and Avocado - Although we live in sunny southern California the area has been subject to winter freezes. This article by UCCE Ventura advisor Dr. Ben Faber gives advice on ways to mitigate the damage caused by frost.
Advances in mitigation of alternate bearing of olive: vegetative growth response to plant growth regulators - UCCE Tulare advisor Dr. Elizabeth Fichtner and UC Riverside professor Carol Lovatt contributed this article on the results of their studies on the relationship between fruit load and vegetative growth on 'Manzanillo' olives.
Fertigation - Measuring Uniformity - Dr. Larry Schwankl, a UC Davis irrigation specialist, discusses steps to uniformly apply fertilizers. Fertigation is the injection of fertilizers through the irrigation system.
Olive Fly Update - UC Davis professor, Dr. Frank Zalom and UC Berkeley professor Dr. Bob VanSteenwyk provides a article on olive fly monitoring and treatment.
Articles in the Winter 2014 drought issue include:
The Spanish Avocado Industry - Dr. Ben Faber, UCCE Ventura advisor, reports on the avocado production and issues in Spain which has similar amounts of acreage devoted to avocado as California. He discusses his observations on varieties, productions and diseases and pests that affect these trees.
Strategizing for Water Cutbacks - Avocado and Citrus - Dr. Faber also contributed this article for saving water, important in these drought stricken times.
California Agricultural Production Statistics - A short summary of statistics on the top California agricultural commodities for 2012 and other pertininent data including additional resources are presented here.
Maintaining the Citrus Orchard with a Reduced Irrigation Allotment - UCCE Kern County advisor, Craig Kallsen, also contributed more information on reducing water usage and still maintain an orchard.
The 2014 Drought in California - This article by UCCE Riverside County Director and advisor Etaferahu Takele summarizes some of the federal, state and UC resources for dealing with drought.
The event will be located at Henry Ito's ranch where attendees will be able to view plots and see the experiments at work and hear guest expert speakers on a variety of irrigation related topics including regulations, methods and test results.
Refreshments will be included.
Date: Thursday, June 6
Time: 9:00 am - 11:15 am
Where: Henry Ito's ranch at 1835 Hueneme Rd. in Oxnard
Contact: Dr. Oleg Daugovish, 805-645-1454 or email@example.com
Two hours of VCALIG educational credits have been approved from the Los Angeles Regional Water Quality Control Board.
For an agenda and map, click here.
The latest issue has recently been posted on our website and features articles on:
Simazine degradation in California citrus orchards. This article focuses on research performed in response to concerns about the effectiveness of simazine as a means of weed control. Here you can read about the experiments performed to test degradation levels and recommendations made regarding use of this herbicide for weed control.
Lime-induced iron chlorosis. Iron deficiencies in many fruit trees can be escalated where soils and irrigation water contain lime which can in turn impede soil drainage. Iron oxides serve as a common source of nutrition for the trees and the deficiency of it can cause dieback and other disorders. This article explores the causes and possible treatments for this condition.
Avocado trunk cankers. UCCE Ventura citrus, avocado and subtropicals advisor, Dr. Ben Faber, contributed this article on the various types and causes for tree cankers. Wounds to the tree, low rainfall, fungi and moisture can promote this disorder.
Asphyxiation. Dr. Faber also explores the problem of asphyxiation that occur in parts or all of the tree. This condition can seriously harm the tree and Dr. Faber discusses some methods of treatment and prevention.
Tree wraps. This article presents information about some of the benefits and considerations in installing wraps on young trees.
Stem and leaf blight. Dr. Faber also wrote this item on blight that he has observed lately on local trees and how insufficient water can contribute to the condition.
Read the full articles from this newsletter or check out other issues of Topics in Subtropics here.
The event was sponsored by the Santa Barbara County Flower and Nursery Growers Association and included a barbeque lunch as part of the registration fees.
The workshop was designed to assist greenhouse and nursery growers evaluate their water quality management practices (BMPs) and implement an Integrated Pest Management (IPM) Program. Information was provided to assist growers in conducting a self-audit of current water quality management practices, developing a farm water quality plan and implementing an IPM program to reduce impacts on water quality.
UC and ANR manuals and resources were used to supplement the presentations. Continuous education credits were also requested for participants.
- Author: Chris M. Webb
Strawberry production growers face many challenges. One such challenge is strawberry anthracnose, which is caused by Colletotrichum acutatum. This plant pathogen is often undetectable on transplants purchased from nurseries for the planting season, but can become very destructive after transplanted into the field.
UCCE’s Oleg Daugovish and collaborators researched this disease and how to best reduce risk and loss. The researchers studied irrigation systems effects on fruit yields, canopy size, and crown tissue infection to determine best management practices.
Their research has recently been published in the American Society for Horticultural Science Journal. You may view the abstract at this site. The full text may also be viewed by following a link on the abstract page. The full article may also be viewed in the UC Cooperative Extension, Ventura County office.