Backyard Orchard News
So, you want to make an insect collection? How do you begin? Where do you start? Distinguished...
If you're interesting in collecting insects, stop by Briggs Hall on Saturday from 10 a.m. to 3 p.m. to learn how to make an insect collection. Here a leafcutter bee is targeting a Gulf Fritillary butterfly. (Photo by Kathy Keatley Garvey)
Bohart Museum of Entomology associate Jeff Smith spreads the wings of a tiger moth, Ctenucha rubroscapus. (Photo by Kathy Keatley Garvey)
Spider mites, fruit moth and twig borer larvae, aphids, and bark cankers are just a few pests that can wreak havoc on stone fruit trees. With spring well underway and trees in full bloom and beginning to develop fruit, it's time to monitor and take action before these pests get out of hand.
UC IPM teamed up with UC farm advisors to develop a series of how-to videos that can help growers and pest control advisers monitor for pests and damage and determine if and when treatment is needed.
In one video, Sacramento Area IPM Advisor Emily Symmes gives a brief overview of how to monitor for webspinning spider mites. Spider mites build up in stone fruit trees as the weather warms up. Late spring through summer is the ideal time to monitor for mites and their damage, which includes leaf stippling and webbing. If mites build up too much, leaves can drop, fruit may not fully develop, and branches and fruit can be exposed to sunburn.
Shoot strikes, or dead drooping leaf tips, are often seen on young peach and nectarine trees. In a second video, UC Sutter and Yuba County Farm Advisor Janine Hasey explains how to monitor for shoot strikes and how to distinguish the culprits, oriental fruit moth and peach twig borer. Although Oriental fruit moth and peach twig borer can bore into both foliage and fruit, they cause the most devastating damage by feeding on fruit. Early season monitoring and treatment can prevent future fruit loss.
In plum and prune orchards, leaf curl aphids and mealy plum aphids cause leaves to curl and become distorted. Aphids produce honeydew, which can lead to the development of sooty mold, causing fruit to crack and blacken. Aphids are often present when leaves start to grow. In his video, Rick Buchner, UC farm advisor for Tehama County, discusses how to monitor for aphids and explains how to decide when treatment is warranted.
In a final video, UC Sacramento County Farm Advisor Chuck Ingels teaches how to distinguish Phytophthora root and crown rot from bacterial canker. The two diseases are often confused because they both cause bark cankers. Phytophthora root and crown rot is confined to the lower trunk, but when a bacterial canker infection occurs in the tree trunk, the diseases can often be confused. Bacterial canker can be confirmed by cutting away the outer bark and looking for characteristic red flecks on the inner bark. Correct identification of these diseases will help in choosing a management strategy.
Webbing caused by webspinning spider mites.
Shoot strike caused by oriental fruit moth.
Leaf distortion caused by leaf curl plum aphid.
Reddish flecking symptoms of bacterial canker.
In real life, the black widow spider is about 1.5 inches long. You'd never know that if you looked...
Figuring out the measurements are secretary Christine Melvin, member Hunter Bolt, president Marko Marrero, and member Sam Shook. (Photo by Alex Nguyen)
Working on the float are (from left) member Ben Maples and president Marko Marrero (Photo by Alex Nguyen)
This is the black widow spider that the UC Davis Entomology Club entered in the UC Davis Picnic Day Parade some 20 years ago.
It promises to be a "honey of a day" and a "honey of a picnic" at the 101st annual UC Davis Picnic...
Beekeepers like to sample honey fresh from a comb. (Photo by Kathy Keatley Garvey)
This was the scene of last year's honey tasting event at Briggs Hall. That's Extension apiculturist Eric Mussen, now retired, staffing the table. (Photo by Kathy Keatley Garvey)
In Journalism 101, students learn that news stories need the Four Ws--who, what, when, where and...
UC Davis professor Diane Ullman created this maggot art last year during the UC Davis Picnic Day. Maggots are dipped into non-toxic, water-based paint and allowed--or encouraged--to roam. (Photo by Kathy Keatley Garvey)
Forensic entomologist Robert Kimsey will answer questions at his Dr. Death booth in 122 Briggs Hall. (Photo by Kathy Keatley Garvey)
Entomologist Fran Keller, who received her doctorate at UC Davis, is a regular at the Bohart Museum open houses. Here she's staffing the gift shop. (Photo by Kathy Keatley Garvey)