The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have confirmed the detection of the citrus disease known as Huanglongbing (HLB), or citrus greening, in Riverside County. The disease was detected in plant material taken from a grapefruit tree in a residential neighborhood in the city of Riverside near I-215. The infected tree …

Sacramento, Calif., (August 1, 2017) – The weather last week was hot and dry across the State. The summer monsoon across the southwest desert helped trigger some showers across the deserts last week, while additional pockets of moisture found their way into the Sierras and managed to produce a few scattered showers throughout the week. Rainfall was limited to Monday …

Riverside, Calif., (July 26, 2017) – Tiny eel-like creatures called nematodes are surrounding us. While they can be free-living (a cup of soil or seawater contains thousands), the most well-known nematodes are the parasitic kind that wreak havoc in people, animals and plants. Despite their reputation, scientists at the University of California, Riverside are studying nematodes as a force for …

Sacramento, Calif., (July 25, 2017) – California growers have affirmed the extension of a cooperative effort in response to the most serious threat to the state’s citrus crops.  Years before the discovery of the citrus pest the Asian citrus psyllid (ACP) in California in 2008 and the subsequent detection in 2012 of Huanglongbing (HLB), the disease spread by the ACP, …

Sacramento, Calif., (July 6, 2017) – A ridge of high pressure sat over the western United States, which resulted in another hot and dry week across the State. The only rain for the week was along the northern coast, where Eureka reported four hundredths of an inch for the week. A broken band of snow approximately 40 miles wide between …

Sacramento, Calif., (June 28, 2017) – The impacts of such an unusually wet winter and prolonged spring rain events on insect and mite activity are still developing. This article summarizes some notable observations thus far and specific pest management considerations as we move into summer. The first codling moth biofix generally ranged from early- to mid-April in 2017 in the …

Sacramento, Calif., (June 27, 2017) – San Francisco, California, June 27, 2017 – People traveling to and from San Francisco International Airport are now advised, “Don’t Pack a Pest,” on signs placed at various locations in the terminal.  A news conference today announced the expansion of this successful awareness campaign into California. “Don’t Pack a Pest” helps protect against invasive species introduction in …