UCCE Sonoma County
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UCCE Sonoma County

Posts Tagged: Aquatic Plants

Waterprimrose shows disturbance-related dispersal along the Russian River

Uruguay waterprimrose

It may be widely understood that most aquatic and wetland weeds are spread by water currents, but the patchwork of colonizing exotic plants can be puzzling. Why do weeds establish in some places but not others? Generally, the number of propagules (seeds or plant fragments) moving in a watershed is...

Posted on Monday, July 16, 2018 at 8:50 AM
Tags: aquatic (22), Aquatic Plants (23), aquatic weeds (23)

Looking for the right herbicide for Egeria

Brazilian waterweed (Egeria densa) growing in a 40-gallon mesocosm at the USDA Aquatic Weed Research Facility, Davis. Photo by Christy Morgan, USDA.

We are doing a trial of eleven aquatic herbicides for their potential to control Brazilian waterweed (Egeria densa). The active ingredients being tested are bispyribac sodium, carfentrazone, copper-ethylenediamine complex, diquat, dipotassium salt of endothall, the dimethylalkylamine salt of...

Posted on Friday, July 6, 2018 at 1:42 PM
Tags: aquatic (22), Aquatic Plants (23), aquatic weeds (23)
Focus Area Tags: Environment

The OTHER invasive elodea

Lagarosiphon NZ 2018

On a conference trip to New Zealand in 2018, I was able to finally meet the final member of the invasive Elodea family, or Hydrocharitaceae. In the United States, we already have the invasive hydrilla (Hydrilla verticillata from Asia) and Brazilian elodea (Egeria densa). Not to be undone, we have...

Posted on Monday, March 12, 2018 at 9:43 AM
Tags: aquatic (22), aquatic plants (23), aquatic weeds (23)

DRAAWP in on New Zealand

A view of Lake Wakatipu and Queenstown, the venue for the Symposium.

The Delta Region Areawide Aquatic Weed Project (DRAAWP) was represented by two presentations to the 15th International Symposium of Aquatic Plants, held February 18-23 2018 in Queenstown, New Zealand. “Quantitative techniques for assessing changes in distribution and abundance of aquatic...

Posted on Wednesday, March 7, 2018 at 12:25 PM
Tags: aquatic plants (23), aquatic weeds (23), invasive (2)

What does family mean?

Pickerelweed (Pontederia cordata)

We were sampling plots in the Delta in July 2016, and found a small clump of this plant – pickerelweed (Pontederia cordata). Generally considered a desirable native wetland plant, it happens to fall in the same botanical family as the baddest of the bad in the Delta – waterhyacinth...

Posted on Thursday, December 14, 2017 at 3:39 PM
Tags: aquatic (22), Aquatic Plants (23), aquatic weeds (23)

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