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Billbugs/Lawn grub proper treatment protocols.
Landscape and Garden All Locations
Lawn Grubs
Posted on: April 10, 2018 by Rich Guggenheim
Billbugs (Sphenophorus spp) can be a problem in lawns planted with Kentucky Bluegrass (KGB). Proper timing of pesticide applications is *critical* for controlling this pest! The most common type of lawn grub found in the Treasure Valley is the Denver Billbug, although in some areas of Boise there is the Japanese Beetle, which is of special concern. Proper identification of grubs is important so that proper treatment may be applied. Management using chemical pesticides need to coincide with certain life cycles of the insect in order to be effective. You may bring a sample of the grub or adult to your local University of Extension office where they may be identified and you may obtain information on proper management of this pest. Properly fertilizing, watering, and mowing of your turf can eliminate the need to apply chemicals to your lawn to control grubs.
» http://extension.uidaho.edu/clearwater/files/2014/10/Controlling-Billbug-Grubs-in-Lawns.pdf
» https://utahpests.usu.edu/uppdl/files-ou/factsheet/Billbugs.pdf
» http://extension.colostate.edu/topic-areas/insects/billbugs-and-white-grubs-5-516/
Pear psylla
Tree Fruits All Locations
Cacopsylla pyricola
Posted on: April 7, 2018 by Rich Guggenheim
Pear psylla is one of the most serious insect pest of pears because of its ability to develop resistance to insecticides and to vector the pathogen that causes pear decline.
Adults hold their transparent wings rooflike over their dark to reddish brown bodies when at rest; they resemble tiny cicadas. A dark spot on the top middle edge of both wings helps to distinguish pear psylla from other psylla. Tiny, elongated yellowish eggs, which are barely visible without a hand lens, are laid on or near fruit spurs starting in late January or early February.
Pesticides applied to pears greatly reduce the effectiveness of natural enemies. Soft pesticide programs that spare natural enemies would reduce the need for chemical control of pear psylla and other pear pests.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=120
» http://ipm.ucanr.edu/PMG/r603301111.html
» https://extension.usu.edu/juab/ou-files/PearPsyllaCacopsyllaPyricola.pdf
» https://blogs.cornell.edu/jentsch/2015/08/06/pear-psylla-late-season-management-options/
White apple leafhopper
Tree Fruits All Locations
Homoptera: Cicadellidae
Posted on: April 7, 2018 by Rich Guggenheim
The overwintering eggs begin hatching at about the tight cluster stage of apple development, with peak hatch during or after bloom. There are five nymphal instars. It takes about 27 days for nymphs of the first generation to develop and 23 days for second generation nymphs.
» http://jenny.tfrec.wsu.edu/opm/displayspecies.php?pn=360
» https://utahpests.usu.edu/uppdl/files-ou/factsheet/white-apple-leafhoppers97.pdf
» http://ipm.ucanr.edu/PMG/r4301811.html
» https://pnwhandbooks.org/insect/tree-fruit/apple/apple-leafhopper
Fruit Orchard Leaf Rollers.
Tree Fruits All Locations
Fruit Tree Leaf Rollers
Posted on: April 7, 2018 by Rich Guggenheim
Various types of leaf rollers may cause damage to fruit trees. Begin using traps to monitor and establish bio-fix and management timing.
» https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2794&context=extension_curall
Peach Twig Borer -Anarsia lineatella
Tree Fruits All Locations
Peach Twig Borer
Posted on: April 6, 2018 by Rich Guggenheim
Peach twig borer can damage stone fruits by feeding in shoots and causing shoot strikes, or by feeding directly on the fruit. Shoot damage is most severe on the vigorous growth of young, developing trees because feeding kills the terminal growth and can result in undesirable lateral branching. As fruit matures, it becomes highly susceptible to attack; damage is most likely to occur from color break to harvest. Twig borer larvae generally enter fruit at the stem end or along the suture and usually feed just under the skin.
Adults from the overwintered generation usually begin emerging in April or early May. First generation larvae usually develop in twigs during May and June and give rise to the next flight of moths in late June or early July. Larvae from this and subsequent generations may attack either twigs or fruit depending on fruit maturity and population density.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=90
» http://ipm.ucanr.edu/PMG/r602300611.html
» https://utahpests.usu.edu/slideshows/ppt/05sh-insects-ptbcontrol.pdf
Coryneum Blight
Tree Fruits All Locations
Coryneum blight/shothole disease
Posted on: April 6, 2018 by Rich Guggenheim
Environmental conditions are favorable for the development of Coyneum blight on prunus spp. the fungal pathogen, Wilsonmyces carpophhilus attacks peach, apricot, plum, and cherry. Early season infections are characterized by the presence of a reddish-purple halo surrounding a light tan, scab-like center spot, which is the dead fruit skin killed by the fungus. These are similar to damage caused by San Jose Scale, and great care is required to avoid confusion. Depending on weather factors, the spots may remain tiny or enlarge to 1/4 inch in diameter. In severe cases, lesions coalesce and cause skin cracking. Severe, early season infections also can have gummy ooze on the fruit surface.
Management includes cleaning and removal of infected plant material. Fungicides can be used, but are preventalitive and not curative and may be applied at schuck fall. Commercial growers may need to apply at regular intervals during wet weather.
» https://utahpests.usu.edu/ipm/agricultural/fruit/coryneum-blight
» http://extension.colostate.edu/topic-areas/agriculture/coryneum-blight-2-914/
» http://ipm.ucanr.edu/PMG/GARDEN/FRUIT/DISEASE/shothole.html
Environmental Conditions Favor Fire Blight Development
Apple All Locations
Erwinia amylovora.
Posted on: April 6, 2018 by Rich Guggenheim
Current environmental conditions favor the development of Fire Blight in apple and related family of trees such as pyracantha, hawthorn, and cotoneaster. This disease does not affect stone fruit such as cherries, plum, apricot, or peach.
Management is best controlled by puning out diseased plant parts. Bordeaux mixture, Streptomycin, and copper sprays are also used to manage this bacterial disease.
» http://extension.usu.edu/files/factsheets/Disease%20027%20UPDC%20Fire%20blight.PDF
» http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
» http://extension.colostate.edu/topic-areas/yard-garden/fire-blight-2-907/
Boxelder bugs
Landscape and Garden All Locations
Box Elder Bugs
Posted on: March 30, 2018 by Rich Guggenheim
Boxelder bugs are active. Management is extremely difficult. Management techniques include:
Exclusion- sealing cracks and around windows, doors, and other entry points.
Eradication of female box elder trees.
Vacuuming- cleaning up the bugs with a shop vac.
Diatomaceous earth can create an effective barrier along with certain contact insecticides. However, repeated insecticide applications have been shown to quickly create resistance and will dramatically reduce natural enemies. Therefore, insecticides should not be used unless necessary to prevent substantial fruit damage. Always read and follow all label instructions.
» https://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1208.pdf
» http://oregonstate.edu/dept/kbrec/boxelder-bug
» http://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1208-S.pdf
Allium (Onion) Leaf Miner
Onion Treasure Valley
Allium Leaf Miner
Posted on: March 27, 2018 by Jerry Neufeld
Allium Leaf Miner, or Onion Leaf Miner is one of the worst onion pests in Europe. It is currently found in several counties in New Jersey and Pennsylvania. This pest was recently deregulated by USDA-APHIS, meaning it will not be stopped when found at port inspections, thereby posing a threat to other onion producing areas in the U.S. Click on the link below for more information about this pest from the Oregon Department of Agriculture.
» http://www.oregon.gov/ODA/shared/Documents/Publications/IPPM/AlliumLeafminerPestAlert.pdf
Clover mites
Landscape and Garden All Locations
Mites
Posted on: March 20, 2018 by Rich Guggenheim
Spider and clover mites have been confirmed in landscapes throughout Canyon County. They are especially problematic on the south and west facing yards where temperatures are warmer and drier. They can invade homes, where they become a nuisance. Control can be obtained with diatomaceous earth as a barrier. Do not use insecticides to control mites. Always read and follow label instructions.
» http://extension.colostate.edu/docs/pubs/insect/05505.pdf
» https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1877&context=extension_curall
» https://www.extension.umn.edu/garden/insects/find/clover-mites/
» https://www.unce.unr.edu/publications/files/ho/other/fs9605.pdf
Cull Onion Disposal in Idaho- 2018
All Crops All Locations
cull onions
Posted on: March 13, 2018 by Jerry Neufeld
The deadline to dispose of cull onions in Idaho is March 15. The pdf file below from Idaho State Department of Agriculture contains more information about cull onion disposal.
Cull Onion Disposal Deadline - March 15
Onion Treasure Valley
Onion Maggot
Posted on: March 9, 2018 by Stuart Reitz
March 15th is the deadline for disposing of cull onions in Malheur County, and in Ada, Canyon, Gem, Payette, Owyhee and Washington counties of Idaho, according to Oregon Department of Agriculture (ODA) and Idaho State Department of Agriculture (ISDA) rules. That means there must be no culls – onions deemed waste or not useable for human consumption – on hand at any packing sheds, in fields or at animal feed facilities on the morning of that date. Onions sorted after March 15th must be properly disposed of within one week. Trucks transporting onions should be covered to prevent spillage along roadsides.
ODA Rules: https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=158227
ISDA Rules: https://adminrules.idaho.gov/rules/current/02/0617.pdf
» https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=158227
2018 Spring Garden Festival
Announcements All Locations
Posted on: March 5, 2018 by Rich Guggenheim
Join us for the 2018 Spring Garden Festival and Plant Sale on April 21st from 9:30 am to 4 PM!
Four tracks of classes are available:
- ISA credits are available for the arborist track
- ISDA credits are available for pesticide track
- PD credits for teachers on JMG track.
- Gardening 101!
Come learn about youth gardening, and general introduction to gardening in Idaho with these all day classes. The cost is $30 for the full day!
To register call 208-459-6003.
Extension programs are available to all. For those requesting special accommodation, please call Rich Guggenheim at 208-459-6003 by APril 15.
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Potato All Locations
Posted on: February 23, 2018 by Nora Olsen
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Announcements recently went out on whether you will be audited in person for your 2017 responses to the Potato Sustainability Initiative (PSI) survey. Most process growers are requested to participate in the PSI sustainability survey and approximately 20% of the growers who completed the survey will be audited each year. The audit involves an interview between the grower and auditor with specific questions and an inspection of documents. A manual has been developed to help growers methodically and successfully gather required documents for the audit, with examples of standard operating procedures, and resources to help answer interview questions. The manual is posted at http://www.uidaho.edu/cals/potatoes. Changes to this manual will be done periodically to adjust for changes to the PSI survey. Note that the survey and audit changed from the previous year. The manual was developed by University of Idaho, Washington State University and IACI with funding from the NW Potato Research Consortium.
Idaho Veterans Garden
Landscape and Garden All Locations
Free Gardening Classes
Posted on: February 21, 2018 by Rich Guggenheim
Join us each Thursday for a series of free classes for the whole family. These classes will be offered at the Idaho Veterans Garden, weather permitting. Otherwise, they will be at the Caldwell Library at 6PM
February 22: Raised bed design and layout- space utilization for maximum yield (At Caldwell Library)
March 1: Gardening for cool/ warm season (succession planting)
March 8: Seed starting
March 15: Spring weed management
March 22: Irrigation system design (focusing on drip)
For more info, call 208-459-6003 and register
Spring Garden Festival. ISA, ISDA, Teacher PD available.
All Crops All Locations
Garden Classes!
Posted on: February 20, 2018 by Rich Guggenheim
Join us on April 21st for an all day gardening festival with four tracks to choose from. A plant sale to benefit the Master Gardener Volunteer program will also be available. See the attached flyer for details.
The cost is $30 for the entire day. To register for a track, contact the University of Idaho Extension Office in Canyon County at 208-459-6003
» https://www.uidaho.edu/extension/county/canyon/horticulture/festival
Weeds and insects
Landscape and Garden All Locations
Early emergence of weeds and insects.
Posted on: February 14, 2018 by Rich Guggenheim
With unseasonably warm temperatures this winter, weeds and insects have already begun to emerge. It is predicted that weeds and insects will be severe this year. In addition to trapping and monitoring, application of dormant oils, pre emergent herbicides, and other preventative pest management measures should have already begun.
One of the most effective ways to manage weeds in the landscape is to apply a 4-6 inch layer of arborist chips.
For more information on controlling pests, including weeds and insects in your landscape, contact your local University of Idaho Extension office.
» http://extension.colostate.edu/topic-areas/insects/insect-control-horticultural-oils-5-569/
» http://ucanr.edu/datastoreFiles/268-754.pdf
» https://oregonstate.edu/dept/nursery-weeds/feature_articles/top_10/Top_10_reasons.html
Fruit Tree Pruning Workshop
Announcements All Locations
2018 Fruit Tree Pruning Workshop
Posted on: February 14, 2018 by Rich Guggenheim
The University of Idaho Pomology and Viticulture Program’s Annual Fruit Tree class will be held on Saturday, February 17th at 9:00 am until about 1:00 pm. It will be held in the large meeting room at Western Laboratory, 211 Hwy 95, Parma, ID 83660. After the classroom session (9:00-10:30), you will go to the UI orchards/vineyards for hands on demonstrations. You may bring your pruning tools if you would like. They will be cleaned before you start pruning. Please let us know if you are coming by Friday.
If you have any questions, please don’t hesitate to contact us.
University of Idaho
Parma Research & Extension Center
29603 U of I Lane
Parma, ID 83660
Phone: (208) 722-6701 ext. 228
Fax: (208) 722-6708
» https://www.uidaho.edu/cals/parma-research-and-extension-center
Grape School location Change
All Crops All Locations
2018 Grape School
Posted on: February 8, 2018 by Rich Guggenheim
Due to the large number of participants for the UI Grape School on Saturday, 9:00 am, Feb. 10th, we have had to change the location. It will now be held at the Western Laboratory’s large meeting room. The address is: 211 Hwy 95, Parma, ID 83660, just north of Parma on the west side of the highway. Their phone number is 208 722-6564 if you should have any questions.
Thank you and sorry for such short notice.
Maurine for Dr. Essie Fallahi
2018 Grape School
Grapes Treasure Valley - Idaho
Posted on: February 6, 2018 by Rich Guggenheim
The Pomology and Viticulture Program Annual Grape School will be held on Saturday Feb 10, 2018 from 9 am -12:30 pm at University of Idaho Parma Research and Extension Center. Physiological and practical aspects of grape production in Idaho, from planting to training and harvesting will be discussed. Participants will also practice different methods of grape pruning at the University of Idaho Vineyard. Free of charge. Please let us know if you or someone you know is joining us by Thursday Feb 8. Thank you
208-722-6701
» https://www.uidaho.edu/cals/parma-research-and-extension-center
Cereal Schools for Southern Idaho
All Crops All Locations
Cereal Schools
Posted on: January 31, 2018 by Juliet Marshall
UI Extension will be hosting the 2018 Cereal Schools next week, February 6 - February 9. There will be a Cropping School in Caldwell Feb 9. CCA and ISDA Pesticide Credits will be available. See attached URL for details on locations and agendas.
Feb 6 - Burley
Feb 7 - Pocatello
Feb 8 - Idaho Falls and Ashton
Feb 9 - Preston and Caldwell
Preventing and Managing Pesticide Resistance Risk Workshop
All Crops All Locations
Posted on: January 27, 2018 by Stuart Reitz
Preventing and Managing Pesticide Resistance Risk Workshop
February 7, 2018
9 am to 12 pm
Malheur County Extension Office, 710 SW 5th Ave., Ontario
No registration charge!
CEUs:
CCA Credits; Idaho and Oregon Pesticide Applicator Credits
Instructors:
Paul Jepson, Integrated Plant Protection Center, OSU
Mary Halbleib, Integrated Plant Protection Center, OSU
Stuart Reitz, Malheur County Extension, OSU
This will be an interactive workshop for growers and crop consultants to increase knowledge regarding the importance of pesticide resistance, and methods to minimize the development of pesticide resistance, and methods to reverse resistance should it occur. The focus of the workshop will be on pests of onions, especially weeds, like yellow nutsedge, and insects, like onion thrips. However, the concepts are applicable to all crops.
The workshop will be a combination of presentations, hands-on exercises for the participants, and discussion among the participants and instructors. Participants will work in groups to facilitate information exchange on exercises related to pesticide resistance and its management. There will be a general discussion session following each exercise.
Western Idaho Ag Show ISDA+IWC event
All Crops All Locations
Posted on: January 15, 2018 by Olga Walsh
Southern Idaho Cereal School at the The Western Idaho Ag Expo, Caldwell ID,
*** 10:30 AM to 12:00 PM ***
*** Variety trials results
*** Wheat Diseases & Pests
*** Varieties in Integrated Disease Management
*** Seed Developers Panel
*** 1 ID Recert Credit ***
The exhibitors of Western Idaho Ag Expo will exhibit the latest and advanced products and services including agri and irrigation services, machines, Ag products, trailers, equipment, grain systems, insurance services, water systems, spraying systems, electric motor, Ag technologies, pesticides, farm equipment, products and services.
2018 Southern Idaho Cropping School
All Crops Treasure Valley
Posted on: January 15, 2018 by Olga Walsh
2018 Treasure Valley Bean School
Dry Beans Treasure Valley
Posted on: January 11, 2018 by Jerry Neufeld
The 2018 Treasure Valley Bean School is January 18 at the Hampton Inn in Nampa. There are 2 Idaho Pesticide License credits. Click on the pdf below for more information about the program.
