Posts Tagged: organic herbicide

Organic herbicide effects on Himalayan blackberry: only short-term control, but also avoided damage to willow

Valerie Eviner is a Professor of Ecosystem Management and Restoration in the Department of Plant Sciences at UC Davis.  Himalayan blackberry can be a persistent weed, particularly in riparian settings. A number of conventional herbicide treatments are effective in its control, but in many...

Potential for late-season spraying of organic herbicides to control yellow starthistle

Valerie Eviner is a Professor of Ecosystem Management and Restoration in the Department of Plant Sciences at UC Davis.   Yellow starthistle is a noxious weed common in many areas of California's grasslands, and is often a priority for control, due to its effects on decreased livestock...

Update on “organic” herbicide test for landscapes

A few months ago I wrote about starting some tests looking at various postemergence herbicides for non-crop use. This project was initiated due to new ordinances some cities in southern California were considering or adopted that limited the use products containing glyphosate on city owned...

Just started new tests of contact herbicides

There has been more than the usual number of questions about what I am calling "bio-based" herbicides recently. Arguably, this is coming from news that some school districts and cities specifically calling out the use of glyphosate on the properties they manage.  Landscaping...

Continuation of organic herbicide ‘Suppress’ story in Southern California

When Richard Smith tells you that he is impressed with efficacy of an organic herbicide you better take notice. Richard shared his results on this blog site last year and showed good weed control with 'Suppress' from Westbridge. This OMRI approved herbicide is a mix of caprylic and capric acids and...

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