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Annual reappointment is a requirement for all volunteers working with UC Division of Agriculture and Natural Resources. Please read this update thoroughly and direct any questions regarding the appointment process to your county's Program Coordinator, Advisor or County Director.
Reappointment began June 1 and must be completed by all Active, Limited Active, First-Year, Gold Badge and Platinum Badge volunteers. If you haven't finished the process already, it can be done in three easy steps!
Step One: Select “Complete Agreement Now” in VMS
- Log into VMS, vms.ucanr.edu
- Select “Complete Agreement Now” from prompt box at top of VMS home screen
Step Two: Complete all three sections to fulfill county requirements for participation
Step Three: Verify Date Completed Displays and Print a Copy for your Records
One of California's most adored flowering plants, impatiens, is being threatened by a serious pest. You may have noticed the common garden impatiens missing from nurseries, retail store shelves, and landscapes, parks, and gardens this year.
Impatiens are dying from a relatively new plant disease called impatiens downy mildew, caused by the fungus-like, oomycete pathogen Plasmopara obducens. The pathogen primarily affects varieties of Impatiens walleriana, or hybrids with an I. walleriana parent and wild impatiens (I. balsamina). Note that this pathogen does not affect New Guinea impatiens (Impatiens hawkeri) or other bedding plant genera. This disease develops rapidly, with a few leaves on apparently healthy impatiens beginning to show slight yellowing and stunting followed by development of white, powdery spores on the undersides of leaves, and later, by leaf and flower drop. Plants are likely to become completely defoliated within several weeks. The pathogen produces airborne spores, which can travel for many miles, as well as swimming zoospores and oospores, which can survive within soil and plant debris for long periods and infect healthy plants when replanted in the same area.
Early detection is especially critical for this disease since chemical control has been shown to be ineffective once sporulation begins. Scout routinely to identify and remove diseased plants before epidemics can result. Removing infected plants may limit spread to other areas of the landscape.
Consider growing alternative bedding plants that will grow well in shady areas of the landscape but that will not be affected by the disease. Some examples include Bergenia hybrids, Caladiums, Coral bells, Lobelia, New Guinea impatiens, Sweet alyssum, and wax begonias.
This article was originally published in the December 2013 issue of the UC IPM Green Bulletin./span>