- Author: Cheryl Reynolds
November has arrived, and before you know it we'll be ringing in 2018! For those who hold a license or certificate from the Department of Pesticide Regulation (DPR), and have a last name starting with the letter M through Z, this is your year to renew.
DPR is urging license and certificate holders to mail in applications now to avoid late fees and to allow enough time for processing so that you can receive your new license or certificate by the beginning of the new year. Renewing early gives DPR time to notify you if you are short any continuing education (CE) hours and allows you time to complete any additional CE courses without having to retest.
If you need more hours to complete your renewal application and don't...
- Author: Steven Fennimore
It is well recognized that most specialty crops do not have sufficient herbicide coverage to provide commercially acceptable weed control. As a result, specialty crops generally have more complex and expensive weed control programs than agronomic crops. From the perspective of agricultural chemical companies, agronomic crops are much more attractive because there are so many more acres of agronomic crops like corn and soy than there are vegetable crops like broccoli and lettuce. When an herbicide is registered on a crop like field corn, which cover 90 million acres in the USA, a 10% market share means that the herbicide will be sold on 9 million acres and there is a plausible path to profitability for the chemical company. In contrast,...
- Author: Devii R. Rao
Foxtail (Hordeum murinum) is a pest plant that can dominate pastures on the Central Coast. It's not particularly good forage for livestock and the seed heads often get stuck in eyes, ears, and noses of livestock and pets. This annual grass is difficult to control, but that didn't stop Michael Cent, local landowner and pharmacist, from trying. Mr. Cent lives in San Juan Bautista (San Benito County) and has a 2.3 acre pasture that was infested with foxtail when he first bought the property. This article is a case study exploring Mr. Cent's efforts to reduce foxtail and encourage more desirable plants to grow.
The pasture was a horse pasture for many...
- Author: Brad Hanson
I received the information below regarding Zeus Herbicide (sulfentrazone) that is relevant to the California tree and vine market. The product was registered (supplemental label) for T&V in 2014.
Info from FMC (10/24/17):
As you work with your clients and make herbicide recommendations, please be aware that the supplemental labels for Zeus herbicide in California for many key crops have expired. Currently, growers may not apply Zeus herbicide on the crops included in the expired supplemental labels including grapes, lemon, orange, pistachio, walnut, tomato transplants and...
- Author: Rebecca Ozeran
As a livestock and natural resources advisor, I don't expect to get questions about fruit trees such as figs. As it turns out, I recently needed to know just enough about figs to provide information on how to kill them - a west Fresno County landowner contacted me to ask how he could get rid of some fig trees that were threatening his belowground water pipelines.
Before writing this post, I did my due diligence and confirmed that no one has already discussed fig trees as the target of weed control on this blog. The only mentions of fig trees in the UC Weed Science blog history are a listing of approved herbicides to control weeds in California subtropical crops as of 2 years ago1 and a mention that fig was one of...