Home News Pest/Disease Management

Pest/Disease Management

New Targets for Huanglongbing Treatments

Scientists are closer to gaining the upper hand on a disease that has wiped out citrus orchards across the globe. New models of the bacterium linked to the disease reveal control methods that were previously unavailable. Metabolic models of organisms are like road maps of cities. “They show you all the biological processes, and how they work together,” said UC …

Barking Up the Right Tree: Canines Detect HLB

In September 2019, huanglongbing—also known as HLB or citrus greening—was detected in residential citrus trees located in Ventura County, in southern California (and just recently, the first HLB carrying Asian Citrus Psyllid was detected in a commercial CA citrus grove). The disease, which has no known cure, is caused by a bacterium that devastates citrus plants and is transmitted by …

CLas-positive Asian Citrus Psyllid Found in Riverside Commercial Grove

An Asian citrus psyllid (ACP) sample – confirmed positive for Candidatus Liberibacter asiaticus (CLas) the bacteria that causes Huanglongbing (HLB) – was collected from a commercial citrus grove in the Woodcrest area of Riverside County. Confirmed by Citrus Research Board’s Jerry Dimitman Laboratory, this single adult psyllid is the first CLas-positive ACP found in a commercial citrus grove in California. While a …

Progress on Navel Orangeworm Sterile Insect Technique Research

Most tree nut growers have heard about the sterile insect technique research underway to combat Navel Orangeworm, the number one pest threat to almond and pistachio growers.  But what is the progress on this program and how soon can we expect to see these sterile insects released on a large scale to support California growers?  Watch this brief interview with …

Fusarium Root Rot in Seedling Lima Beans

In May, I looked at a lima bean field in the Sacramento Valley that showed poor seedling emergence scattered throughout the field (photo 1). I sent samples to the UC Davis Plant Pathology lab and the main pathogen consistently recovered from the roots was Fusarium root rot, a fungal disease caused by Fusarium solani f. sp. phaseoli. This pathogen is specific …

More USDA Walnut Purchases Requested Amidst Pandemic

Representative Josh Harder (CA-10) today led a bipartisan letter to United States Department of Agriculture (USDA) Secretary Sonny Perdue, asking him to use his authority to utilize all purchasing authorities to buoy the struggling walnut industry. The walnut industry – based exclusively in California – has seen prices plummet in the last two years to near or below the costs …

Pest Colonizes Grape Vines, Forms Tumors, Repels other Predators

Following a decade-long effort, scientists have mapped out the genome of an aphid-like pest capable of decimating vineyards. In so doing, they have discovered how it spreads — and potentially how to stop it. The research team’s work on the genome was published this past week in a BMC Biology paper. In it, they identified nearly 3,000 genes enabling the …

Recurrent Selection with Glufosinate at Low Rates Reduces Italian Ryegrass Resistance

Italian ryegrass is a major weed in orchards, vineyards, field crops, and fallow fields of California (Figure 1). Several different herbicides are used to control ryegrass and had been effective in reducing infestations until resistance evolved in many populations following repeated use of the herbicides. To date, resistance to glyphosate, paraquat, and some ACCase and ALS inhibitors has been confirmed …

$8 Million for Navel Orangeworm Sterile Insect Program

The U.S. House of Representatives Appropriations Committee recently released an appropriations bill that included $8 million for the facility in Phoenix, AZ that is currently being used to rear sterile navel orangeworm (NOW) for aerial release in California. The facility is part of an area-wide pilot program that the pistachio and almond industries have been interested in developing. For 2020, …

New Traps Cut Off Citrus Greening Pests from Hiding Places

Researchers across the nation are struggling to end the scourge of citrus greening disease, also known as huanglongbing. The disease renders citrus fruit inedible and eventually kills entire orchards. In Florida alone, from 2012-2016 the disease caused production losses of $4.4 billion and eliminated about 7,900 jobs. With economic impact like that, it’s no wonder that previous citrus greening research …

123...18Page 1 of 18

Classified Ads

Subscribe

Sign up here to get the latest news delivered directly to your inbox!

Contact

Know of some fresh news that should be on this site? Interested in advertising on this site or any of our partner publications/sites? Give us a call! 559-298-6020

Subscribe!

Sign up here to get the latest news delivered directly to your inbox!

I've Already Subscribed