- Author: Sean Nealon
Among the topics is Asian citrus psyllid (ACP), which is off particular concern to citrus growers at the moment. The exotic pests can spread huanglongbing (HLB) disease, an incurable condition that has already seriously impacted the citrus industries in Florida and Texas. A few trees in urban Southern California backyards have been found infected with HLB and were pulled out and destroyed.
At the citrus field day, UC Agriculture and Natural Resources Cooperative Extension specialist Matt Daugherty will discuss the potential for nurseries to contribute to Asian citrus psyllid and huanglongbing spread. Regulations are in place in California that restrict movement of containerized citrus and require specific insecticide treatments. Daughterty is evaluating how well such steps reduce the risk of human-mediated Asian citrus psyllid spread. He is using a combination of monitoring in nurseries, field experiments on chemical control efficacy, and characterization of the effects of nursery practices on psyllid management.
Another speaker, UC ANR Cooperative Extension specialist Philippe Rolshausen, will explain how bacteria, fungi and viruses associated with plants, either on its surface or inside, can affect plant health and productivity. He will demonstrate how these organisms can be used for disease control using Pierce's disease of grapevines as an example and also drawing a comparison with huanglongbing in citrus.
The event, with a mix of presentations and field tours, is scheduled from 8 a.m. to 3 p.m. Advance registration, which is $25, is required. The deadline is Jan. 22. There will be no day-of-event registration available.
To register visit: https://form.jotform.com/53556635957975. For more information call (951) 827-5906.
The following is a tentative agenda:
- 8 a.m. – Introductions by Peggy Mauk, director of agricultural operations at UC Riverside and a subtropical horticulture extension specialist, and Tracy Kahn, curator of UC Riverside's Citrus Variety Collection.
- 8:10 a.m. – Welcomes from Kathryn Uhrich, dean of UC Riverside's College of Natural and Agricultural Sciences and Michael Anderson, a divisional dean for agriculture and natural resources
- 8:30 a.m. – Minimizing the potential for nurseries to contribute to Asian citrus psyllid spread in California – Matt Daugherty, UC ANR Cooperative Extension specialist, entomology.
- 9:15 a.m. – Microbiota-based approach to citrus tree health – Philippe Rolshausen, UC ANR Cooperative Extension specialist, subtropical horticulture.
- 9:45 a.m. – Low seeded citrus – variation in seed content and its causes – Mikeal Roose, professor, botany and plant sciences at UC Riverside. Roose specializes in plant breeding, particularly with citrus.
- 10:30 a.m. – Break
- 11 a.m. – Novel detection methods for Huanglongbing – Wenbo Ma, associate professor, plant pathology at UC Riverside .Her research is focused on developing methods that detect Huanglongbing by monitoring so-called “effectors” secreted from the bacterial pathogens causing the disease.
- 12 p.m. – Lunch (catered by Anchos Southwest Grill).
- 1 p.m. – Pesticide safety training – Vince Samons, UC Riverside agricultural operations.
- 1:45 p.m. – Walk-through of the Citrus Variety Collection, rootstock trial and phytophthora root rot trial.
To make a tax-deductible contribution to the Citrus Variety Collection Endowment fund or the Citrus Research Center & Agricultural Experiment Station support fund go to the following link and select College of Natural and Agricultural Sciences then select the specific fund: https://advancementservices.ucr.edu/GivingForm.aspx