Persea mite training workshop for avocado pest managers/growers

The workshop will cover aspects of sampling using new statistically-based sampling approaches (presence-absence sampling and tree selection rules) in the field, a series of short lectures on persea mite biology, ecology, area of origin, and control strategies (chemical and biological).

 2.5 hrs of CE credits from DPR for these workshops.

Where: Santa Paula (June 20), Limoneira Ranch, 1141 Cummings Road, Santa Paula, CA 93060

Irvine (June 27), South Coast Research Experiment Station, 7601 Irvine Blvd, Irvine, CA 92618

When: Two sessions held at each location, Morning (8-11:30am) & Afternoon (1-4:30pm). Both sessions cover the same material.

Cost: $35 per person

Registration link:

http://cisr.ucr.edu/mites/workshop.html

UC is looking for public comments regarding new positions.
Go to http://ucanr.org/callforpositions 
 

 A colleague recently asked me what I thought about the Iron HEDTA (FeHEDTA) herbicides that recently came on the market.  I replied with, "Uh..."  Turns out that she is located in northern California and I'm in southern California and I guess the iron train has not arrived down here yet because no one has asked me about it.  So I decided to check it out.

I could only find a little information online where the product was tested and it was not really a planned study, more like a what I call a squirt and look experiment.  Generally that's not a good sign. If something works, there are usually a lot of scientific reports about it because researchers want to see where it can best be used.  Nevertheless, I wanted to try it myself so I went looking for a bottle at my local nurseries.  I say nurseries because I had to go to a few to find even one product that contained Iron HEDTA.  I found WHITNEY FARMS LAWN WEED KILLER although there are 4 other registered products with the same active ingredient.

Concentrate - BAYER ADVANCED NATRIA LAWN WEED CONTROL CONCENTRATE 26.5%

Concentrate - FIESTA TURF WEED KILLER 26.5%

Concentrate - IRON-X SELECTIVE WEED KILLER FOR LAWNS 26.5%

Ready to use - ORTHO ELEMENTALS LAWN WEED KILLER 1.5%

Ready to use - WHITNEY FARMS LAWN WEED KILLER 1.5%

Long story short, this stuff works. I tried it on broadleaf plantain, dandelion, woodsorrel oxalis, and black medic in a tall fescue lawn.  It took about 1 week for broadleaf plantain to die and the black medic was not controlled at all.  However, the oxalis and dandelion both were showing injury in 1 day and were controlled in about 3 days.  There was no turf injury.

I do want to caution you that there is no soil residual although there may be some longer term postemergence activity (I hesitate to speculate that it is systemic). The area I sprayed for oxalis had new plants about 3 weeks after I did the treatment. 

I'll put a longer report with photos in the next Green Bulletin (http://ipm.ucdavis.edu/greenbulletin/index.html)  or Retail Nursery and Garden Center IPM Newsletter (http://ipm.ucdavis.edu/RETAIL/retail-newsletter.html)

California Department of Pesticide Regulation NEWS
FOR IMMEDIATE RELEASE  Oct. 28, 2011 (11-15)
Media contact: Lea Brooks lbrooks@cdpr.ca.gov or 916.445.3974

Department of Pesticide Regulation Proposes Restrictions in Urban Areas to Protect Water Quality

SACRAMENTO - Businesses that provide structural pest control would be required to follow strict new controls that limit where pesticides are applied around structures to protect water quality under regulations proposed today by the California Department of Pesticide Regulation (DPR).

“Surface water monitoring data collected for the state’s regional water quality control boards and monitoring by our staff continue to show that pesticide runoff in both urban and agricultural waterways exceed levels toxic to some small aquatic organisms,” DPR Chief Deputy Director Chris Reardon said. “Most people don’t realize that pesticides used to control ants, spiders and other pests in and around homes, commercial and industrial buildings and landscapes can affect aquatic life.”

While pesticide use is closely associated with agriculture, more than half of the products regulated by DPR are for commercial, industrial and home use, Reardon explained.

The rules would restrict the use of 17 pyrethroid insecticides by businesses that apply them to homes, other structures and landscaped areas -- not pesticide use by individual consumers. In addition to decreasing the amount of insecticides used around structures, the regulations would prohibit pest control applicators and maintenance gardeners from making applications when it rains, when puddles are present and over drains and natural drainage areas.

The intent of the regulations is to reduce pesticide contamination in runoff from homes and other urban structures, driveways and landscaped areas into surface water. Pest control businesses and maintenance gardeners apply more than 70 percent of the pyrethroids targeted by the proposed regulations.

DPR has long encouraged more environmentally friendly pest prevention and control strategies through grant funding and recognition. The proposed regulations incorporate changes suggested by pest control businesses and other stakeholders during workshops and numerous discussions over the past two years.

“The proposed regulations are a cost-effective way to protect water quality,” Reardon said. “Many pest control businesses are already offering site evaluation and customized pest control rather than routine spraying of pyrethroids.”

Following adoption of the proposed regulations, DPR plans to follow up with additional restrictions on pesticide use in agricultural areas in 2013 to protect surface water from further contamination.

More information about the proposed regulations is posted on DPR’s website at: http://www.cdpr.ca.gov/docs/legbills/rulepkgs/11-004/11-004.htm. The deadline for public comments is 5 p.m. Dec. 12. They can be submitted by e-mail to dpr11004@cdpr.ca.gov, by fax at 916-324-1452 or by mail to Linda Irokawa-Otani, Regulations Coordinator, Office of Legislation and Policy, Department of Pesticide Regulation, 1001 I St., P.O. Box 4015, Sacramento, CA 95812-4015.

One of five departments and boards within the California Environmental Protection Agency, DPR regulates the registration, sale and use of pesticides to protect people and the environment. Additional information about DPR is posted at www.cdpr.ca.gov.