- Author: Kathy Keatley Garvey
In a ground-breaking discovery encompassing six years of research, an international team of scientists led by UC Davis chemical ecologist Walter Leal announced they've identified the sex pheromone of the Asian citrus psyllid (ACP), an insect that feeds on citrus and transmits the bacteria that causes the deadly citrus greening disease known as Huanglongbing (HLB).
Leal's team included scientists from UC Davis, University of Sao Paulo, and the Fund for Citrus Protection (FUNDECITRUS) from the state of Sao Paulo.
“Dr. Leal's discovery of the ACP pheromone is a significant breakthrough in preventing the spread of this serious citrus insect,...
This time of year, deciduous trees go dormant, and evergreen trees such as pine are more visible in the landscape. Pine trees, like other plants, can suffer from attack by pests, whether on your property or in our forested areas in California.
Pine trees do best when planted in well-drained soil in full sun, and most species need little water once established. Trees can ward off attacks by many insects and diseases if taken care of properly.
Several diseases can affect pine trees, such as rusts, blight, and root rot. Disease symptoms vary, but may include discoloration of leaves or needles, cankers, galls, and ooze.
Pine trees are susceptible to damage by over 20 different kinds of insects, including aphids,...
Weeds can be a real nuisance in gardens and landscapes, and even during the colder winter months, some kinds of weeds continue to grow and thrive. These are called winter annual weeds.
Most weeds are classified as annuals, biennials, or perennials. Annuals complete their life cycle (germinate from seed, grow, flower, set seed, and die) in one year or less, biennials generally complete their life cycle in 2 years, and perennials live longer than 2 years.
Examples of winter annual weeds include chickweed, little mallow, and annual bluegrass. They germinate and actively grow during fall and winter, then produce seed and die by the hot summer months.
If allowed to set seed, annual winter weeds can continue to grow...
Many people this week are talking about turkeys. But not in the same way as us here at UC IPM.
Wild turkey sightings have gone from being a rare occasion to becoming a common event in recent years, as their populations have exploded in some urban areas of California. These large birds often travel together in flocks, where they cause trouble as they search for food – by scratching and digging in gardens, and leaving their waste behind. Wild turkeys often pose a traffic hazard as they cross streets or walk in roads. They can also be aggressive and may chase or harass people.
Sometimes people think it's neat to have wild turkeys around and may even encourage them by putting out food. However, did you know it is...
Opossums are the only marsupial native to North America and are quite interesting animals. Female marsupials may be seen carrying their young in an abdominal pouch or sometimes on their back. But opossums can also be pests.
This nocturnal animal can be a nuisance in neighborhoods when they dig through trash cans, compost piles, or food dishes intended for pets. If opossums visit your property occasionally, this may not be a cause for concern, unless your pets remain outdoors at night. Opossums will fight with dogs or cats and can inflict serious injury.
Opossums are often hosts for dog and cat fleas, and may carry several diseases including tuberculosis, toxoplasmosis, trichomoniasis and Chagas...