- Author: Pamela Kan-Rice
Residents urged to check their citrus trees for Asian citrus psyllid
An insect carrying the huanglongbing bacteria, a pathogen that kills citrus trees, has been found on a residential citrus tree in Ventura County, according to the California Citrus Pest & Disease Prevention Program.
“This really is a devastating find,” said Ben Faber, UC Cooperative Extension subtropical crops advisor for Ventura and Santa Barbara counties. “It means that Asian citrus psyllid that is infected with the HLB bacteria is...
- Author: Emily C. Dooley, UC Davis College of Agricultural and Environmental Sciences
Strawberries selectively bred for Fusarium wilt resistance and high yields
The University of California, Davis, is releasing five new strawberry varieties that are resistant to the soilborne disease Fusarium wilt, have high yields and improved fruit quality.
UC Eclipse, UC Golden Gate, UC Keystone, UC Monarch and UC Surfline will be available for sale to California nurseries from Foundation Plant Services in April.
Roughly 88% of strawberries grown in...
- Author: Mike Hsu
Salinas Valley lettuce growers lost about $150 million in 2022 due to diseases
A stormy winter could portend another devastating year for the lettuce industry in the Salinas Valley, which saw approximately $150 million in lost gross revenue in 2022 due to INSV (impatiens necrotic spot virus) and associated diseases. Recent drenching rains might mean more weeds – overwintering “reservoirs” for the tiny insect, the Western flower thrips, that carries INSV.
Or the extreme precipitation could benefit growers, as thrips in the soil – during their intermediate stage of development – might be drowned in the waterlogged...
- Author: Mike Hsu
Preliminary results indicate 3.5% of ACP collected showed signs of bacterium that can cause huanglongbing
An ongoing study in the commercial citrus groves of coastal Southern California is looking at whether Asian citrus psyllids – the insect vector of huanglongbing “citrus greening” disease – are carrying the bacterium that can cause HLB.
Thus far, the project has tested more than 3,000 adult ACP collected from 15 commercial citrus sites across the...
- Author: Jules Bernstein, UC Riverside
Scientists search for pheromone to disrupt insect mating
UC Riverside scientists are on the hunt for a chemical that disrupts “evil” weevils' mating and could prevent them from destroying California's supply of avocados.
Avocado weevils, small beetles with long snouts, drill through fruit to lay eggs. The weevil grubs or larvae bore into avocado seeds to feed, rendering everyone's favorite toast topping inedible.
“They're extremely hard to control because they spend most of their time deep inside the fruit, where they're very well protected from insecticides and natural enemies,” said UCR researcher
