Archive for September, 2011

Florida Urban Forestry Council Annual Meeting: 10.13.2011

The Palm Beach County Cooperative Extension Service will host the Florida Urban Forestry Council’s 2011 Annual meeting on October 13th.  If you aren’t yet involved with the FUFC, this is a great opportunity to get involved with this fantastic organization and network with other professionals.   This event will take place on Thursday, October 13th, from 9:00am – 3:00pm, in the Clayton Hutcheson Agricultural Center.

UF Laura Sanagorski

The brochure for this event is located here: FUFC Annual Workshop Brochure

The Florida Urban Forestry Council (FUFC) is a statewide, non-profit organization with a diverse membership of municipalities, arborists, utility foresters, community tree board members, tree advocates, volunteers, horticulturists, landscape professionals, and interested citizens who care about trees in their communities.  We hope to see you there!

Limited Commercial Landscape Maintenance (LCLM) Course

UF/IFAS Palm Beach County Cooperative Extension Service will be offering a Limited Commercial Landscape Maintenance (LCLM) pesticide applicator course.  An LCLM license allows the holder to apply “caution” labeled pesticides to shrub beds and sidewalks (no turf) and use up to a 3-gallon handheld sprayer or 5-gallon backpack for treatments.  The LCLM workshop will be held:

October 25th, 2011, from 8:30am – 3:30pm, at the Clayton Hutchinson Agricultural Center, Exhibit Hall A   

This course will:
  • Prepare participants to take the LCLM certification exam
  • Provide 6 required prerequisite CEUs
  • Explain related requirements and laws
  • Assist applicants in understanding the licensing process

In Palm Beach County, your GI-BMP team is:

  • Frank Dowdle, Agricultural Safety Extension Agent email
  • Laura Sanagorski, Environmental Horticulture Extension Agent email
  • Bill Schall, Commercial Horticulture Extension Agent email
To attend this class, you can download the LCLM brochure or call 561.233.1725.

Rainfastness of Pesticides

It’s important to avoid fertilizer or pesticide application when a heavy rain is expected.  As you know, this may result in runoff of these chemicals- can end up polluting our water, reducing the effectiveness of the product, and wasting customers’ money.  In South Florida, rain can be frequent and unpredictable, so its a good idea to be in tune with the weather and the products you are applying.

Some pesticides can withstand rain better than others, and foliar-applied products are extremely variable.  A rainfast pesticide is one that has dried and/or been absorbed by a plant’s tissues.  Labelling for rainfastness is variable.  Some product labels contain significant detail, while others don’t address rainfastness.

Keep the following in mind:

  1. Some products provide a specific time frame needed to achieve rainfastness, while others don’t.  ALWAYS check the weather and the label.
  2. Some products will prohibit application when rain is forecast.
  3. Adjuvants, such as surfactants and product thickeners, can be used to improve a product’s rainfastness.
  4. Rainfastness is variable based on insecticide class, amount of rainfall, and plant part (fruit or leaves).  For example, with up to 1/2″ of rain, Neonicotinoids are highly rainfast, while Pyrethroids are only moderately rainfast.  (see the full publication, linked below, for a detailed chart)
  5. The label is the law!  No exceptions!

This post was adapted from a new EDIS publication, Rainfastness of Pesticides, by Bonnie Wells and Fred Fischel.  You can read more here.