- Author: Karey Windbiel-Rojas
- Posted by: Gale Perez
If you don't know what weed you are dealing with, the gallery will help you identify the plant using visual characteristics. First, narrow your search by selecting the weed category—broadleaf, grass, sedge, or aquatic plant (Figure 1). You will then see a collection of photos in that category.
Select the appropriate plant characteristic (Figure 2) to see another sub-menu of weeds that exhibit the traits of your weed. Scrolling over a thumbnail image on this sub-menu will bring up several photos of the weed—as a seedling, as a mature plant, its flower, and its seeds—to further aid in identification (Figure 3).
If you think you know the name of your weed, the gallery allows you to quickly access photos using common or scientific names to confirm identification. Just use the “List of All Weeds” link from the main weed gallery page.
The gallery contains other features as well:
- Want to know more about plants and their parts? Illustrated tutorials distinguish among broadleaf, grass, and sedge plants and define plant parts used in characterizing certain plant species.
- Need to identify common weeds found in lawns or turf? The broadleaf and grass categories link to a dichotomous key, where users can pinpoint common turf (and landscape) weeds.
- Didn't find your weed? See the weed identification tool under “More information” to search the UC Weed Research & Information Center (WRIC) technical weed key.
You can access the weed gallery page from the left-hand column on many pages on the UC IPM website or from the various weed-related pages within the website. To access the weed gallery directly, visit http://ipm.ucanr.edu/PMG/weeds_intro.html.
- Author: Whitney Brim-DeForest
- Posted by: Gale Perez
From the UC Rice Blog :: Feb. 18, 2022
We have recently produced a series of videos on weedy rice identification in California. Each video is biotype-specific. Our UC Rice YouTube Channel also has many other recordings from our virtual meetings and webinars.
Weedy Rice Type 1
Weedy Rice Type 2
Weedy Rice Type 3
Weedy Rice Type 5
- Author: Whitney Brim-DeForest
We have recently produced a series of videos on weedy rice identification in California. Each video is biotype-specific. Our UC Rice YouTube Channel also has many other recordings from our virtual meetings and webinars.
- Author: Richard Smith
- Posted by: Gale Perez
Richard Smith is the University of California Cooperative Extension Monterey County Vegetable Crop Production and Weed Science Farm Advisor. He also covers Santa Cruz and San Benito counties.
Oakleaf goosefoot is closely related to lambsquarters (C. album) and nettleleaf goosefoot (C. murale). A variety of oakleaf goosefoot is native to eastern California (C. glaucum var. salina). The variety that we have here in the Salinas Valley is not the native, but rather the non-native variety C. glaucum var. glauca which is widely reported as a weed in many parts of the United States.
Oakleaf goosefoot can inhabit vegetable production fields as well as the margins of fields and ditches (Photos 6-7). At this point, it appears to be susceptible to the same herbicides as the other Chenopodium species. In one trial, it was shown to be highly susceptible to the combination of Kerb and Prefar. That is the good news. The bad news is that it is spreading and is taking full advantage of opportunities along field edges to set great quantities of seed. At this point, the populations of this weed have increased to the point that several growers and PCA's have commented about it and have expressed concern for its growing populations. It is good to recognize this weed and address it as you would the other Chenopodium species.
/span>- Posted by: Gale Perez
Date/Time: Aug 19, 2021 • 1:00 PM (Pacific Time (US and Canada))
Topic: Weed Identification
Speaker: John Roncoroni, UC Cooperative Extension Weed Science Farm Advisor, Emeritus