[From the December 2016 issue of the UC IPM Green Bulletin]
The Polyphagous shot hole borer (PSHB) (Fig. 1) and Kuroshio shot hole borer (KSHB) are invasive wood-boring beetles that attack dozens of tree species in Southern California, including commercial avocado groves, common landscape trees, and native species in urban and wildland environments. Both beetles spread a disease called Fusarium Dieback (FD), which is caused by pathogenic fungi. Trees that are FD-susceptible may experience branch dieback, canopy loss, and tree mortality (Fig..../span>
Bat Week is an annual event to celebrate this small, flying mammal, and what better time to talk bats than at Halloween? Although they are often depicted as spooky, blood-sucking creatures, in reality, most bats eat insects and are helpful to people.
Bats in the Landscape
California is home to over 25 bat species, but most people never see them because they are nocturnal. Bats can be helpful predators in the landscape. For example, did you know that some bats will eat stink bugs, cucumber beetles, mosquitoes, and flies? Or that some bats can eat their body weight in insects every night?
Bats as Pests
Unfortunately, sometimes bats can concern people, especially.../h2>/h2>
[From the August 2016 issue of the UC IPM Green Bulletin]
A new psyllid pest that causes a distinctive, tight, typically complete rolling of leaves (Figure 1), has been found on Ficus microcarpa (Chinese banyan, Indian laurel fig) in Los Angeles, Orange, San Bernardino, Ventura, San Diego, and Riverside counties. This species of Ficus is one of our most common, useful, and widespread ornamental landscape trees. Incidentally, it has also long been a target for numerous exotic pests.
The psyllid, identified as Trioza.../span>
- Author: Karey Windbiel-Rojas
In observance of National Pollinator Week, we thought we'd share how you can manage pests around your home, garden, and landscape and still protect pollinators.
Natural enemies (predators, parasites, and pathogens) reduce pest populations and help prevent damage to plants. Pollinators such as domesticated honey bees, wild bees, and other pollinating insects, are essential in the production of many of the fruits, vegetables, and nuts we grow in California, both in our backyards and in commercial agriculture.
Natural enemies and pollinators can be harmed by pesticides...
Weeds can be found in just about every lawn. Weeds are not only unattractive to some people, but they compete with turfgrass for water and nutrients. But did you know that weeds are seldom a problem in well-managed, vigorously growing lawns?
Why Does Your Lawn Have Weeds?
Most lawns fall prey to weeds due to poor maintenance practices that weaken it. The three main factors likely to weaken lawns are improper irrigation, fertilization, or mowing.
In order to know how to manage weeds correctly, you'll need to identify the weeds and understand their life cycle. Certain weeds are associated with conditions such as compacted soil, overwatering, and poor drainage.
The newly updated.../h2>/h2>