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Pest/Disease Management

Invasive Nutria Damages CA Waterways — Requesting Farmer Assistance!

Rodents of unusual size —California has got them! The new kid on the block is Nutria, a semiaquatic rodent, that has invaded California’s waterways, and is doing a lot of damage.  USDA is asking farmers for help in locating these pests to be removed. Derek Milsaps from USDA-APHIS presented some information on this pest at the Tree & Vine Expo …

Dealing with Diamondback Moth

It has been a couple of “rough” weeks managing the diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae), in the Central Coast. Based on my conversations with some PCAs, we are managing large populations of this moth, resulting in high infestations in cole crops like broccoli and Brussel sprouts. Larvae of this insect will typically feed on the underside of the …

Got “Red” Aphids?

Red Aphids

Since last week, I have been receiving samples with “red” aphids to get the identification. It turned out that this time, most of these ‘reddish’ aphids were identified as the lettuce aphid, Nasonovia ribis-nigri (Fig. 1). To me, they look more red-orange; however, their distinct black marks on the abdomen and short cauda (finger-like, short appendage at the end of …

New Pesticide Laws & Regs Now Taking Effect in California

New Pesticide Laws & Regs Now Taking Effect in California

If you missed the Annual Tree & Vine Expo, Marline Azevedo with the Stanislaus County Ag Commissioner’s office provided an update on changes in laws and regulations for growers moving into 2018. Watch her brief interview as she describes two key changes in Chlorpyrifos permit conditions & pesticide use around school sites.

Downy Mildew Devastates Vegetable Crops in Southern California

Downy Mildew Devastates Vegetable Crops in Southern California

At the CAPCA Spring Summit in Temecula, growers and crop consultants gathered to discuss issues with pest & disease management, and how to resolve them. This year was especially rough on southern desert vegetable growers for downy mildew, as many were not prepared for all the rain we received earlier this year. Watch this brief video with UC Plant Pathologist …

Finding a Viable Alternative to DADS for White Rot Control

Finding a Viable Alternative to DADS for White Rot Control

White Rot is a serious enemy to garlic & onion production in the Central Valley, and the California Garlic & Onion Research Advisory Board continues to fund research to find a viable alternative solution to DADS, a material that is no longer available to the industry. Watch this interview with UC Fresno County Farm Advisor Tom Turini as he provides …

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