A California superintendent finds a good option for nutsedge control.

Yellow nutsedge, purple nutsedge and green kyllinga can be some of the worst weeds to keep under control. These plants reproduce by underground tubers, rhizomes and above ground seeds. You can find these weeds throughout the country, but certain areas like Palm Springs, California have higher populations due to ideal conditions. Soils are sandy and very warm with adequate irrigation that creates perfect conditions for producing large nutsedge populations. After dealing with nutsedge at Tahquitz Creek Golf Resort in Palm Springs, California since he became superintendent four years ago, Justin Peloquin finally found a nutsedge control solution with Dismiss® CA herbicide. Featuring FMC sulfentrazone as the active ingredient, Dismiss CA has been registered in California for three years. The golf resort offers two challenging champion courses. The Legend course, which just celebrated its 50th anniversary, is a traditional country club style golf course. The Resort course, a well-known Ted Robinson design, is a desert links style golf course that offers beautiful mountain views, along with scenic waterscapes and undulating greens. Tahquitz Creek Golf Resort has Bermudagrass over-seeded with Ryegrass and Poa Trivialis mix. Dismiss CA is a good fit for controlling sedge in an over-seeded situation. Nutsedge emerges in early spring around the country and even earlier in Palm Springs. In early spring, desert courses have a lot of play and the superintendents work to keep their Ryegrass mixtures alive until transition. For nutsedge control, Dismiss CA can be applied to Poa Trivialis, Fine Fescue, Ryegrass and most other cool – and warm – season turf types at labeled rates. Watch this short video to learn more about Dismiss...

A new species of beetle is affecting California ornamental trees.

There is a new invasive species in California infecting ornamental trees and avocado orchards in Los Angeles and Orange County. Researchers believe the Polyphagous Shot Hole Borer (Euwallacea sp.) is the new species and is of the Asian ambrosia beetle. This pest is the size of a sesame seed, but it can take down limbs and whole trees as it feeds on cambium and phloem while spreading Fusarium Dieback (Fusarium sp.) I recently attended an emergency meeting where researchers recommended Onyx® insecticide (bifenthrin) and some systemic insecticides for control. However, I am hearing that the systemics are not working and people are recommending Onyx. FMC Professional Solutions formulated Onyx insecticide as a preventive treatment for reliable, long-term protection against beetles and borers. It also controls a wide spectrum of insects and mites on trees, shrubs, foliage plants, non-bearing fruit and nut trees and flowers in outdoor plantscapes. Onyx mixes readily with water and other aqueous carriers and may be tank-mixed with other products including insect growth regulators. Since Onyx is an EC (emulsifiable concentrate), the following procedure is recommended for preparation of a new tank mix, unless specified otherwise in label directions: Add wettable powders to tank water Agitate Add liquids and flowables Agitate Add emulsifiable concentrates Agitate. Read the Onyx label for more information on tank mixing troubleshooting ideas. For preventative control: Make applications of a spray mixture containing 1 to 2 pints (16 to 32 fl oz) of Onyx per 100 gallons (0.25 to 0.5 lbs. ai/100gallons) of water to the trunk, scaffolding and limbs of the tree with a hydraulic sprayer in the early spring or...