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Paul Castrovillo "First 2016 Western Cherry Fruit Flies Captured in ISDA Monitor Trap"
All Crops All Locations
Western Cherry Fruit Fly
Posted on: May 20, 2016 by Rich Guggenheim
Now is the time to begin treatment for WCFF.
Four specimens of Western Cherry Fruit Fly (Rhagoletis indifferens) were found in an Idaho State Department of Agriculture WCFF survey trap in Canyon County that was checked on May 16. These were the first specimens captured in 2016. Our traps in Gem County, checked the same day, contained no WCFF, however, historically we expect to find them there about a week after the initial catch in Canyon County.
Please check with your local county extension educator or crop consultant for the situation in your area and for proper chemical recommendations and application methods if necessary.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=150
» http://wci.colostate.edu/Assets/pdf/western.cherry.fruit.fly.pdf
» https://extension.usu.edu/files/publications/factsheet/western-cherry-fruit-flies06.pdf
First 2016 Western Cherry Fruit Flies Captured in ISDA Monitor Trap
Cherry All Locations
Western Cherry Fruit Fly
Posted on: May 20, 2016 by Paul Castrovillo
Four specimens of Western Cherry Fruit Fly (Rhagoletis indifferens) were found in an Idaho State Department of Agriculture WCFF survey trap in Canyon County that was checked on May 16. These were the first specimens captured in 2016. Our traps in Gem County, checked the same day, contained no WCFF, however, historically we expect to find them there about a week after the initial catch in Canyon County.
Now is the time to begin treatment for WCFF.
Please check with your local county extension educator or crop consultant for the situation in your area and for proper chemical recommendations and application methods if necessary.
Fire Blight on Apple and Pear Trees
Tree Fruits All Locations
Fire Blight
Posted on: May 18, 2016 by Dian Roberson
We are seeing a lot of fire blight on pears come into the Canyon County Extension Office! Fire blight is a bacterial disease that affects certain species in the rose family (Rosaceae). It is especially destructive to apples (Malus spp.), pears (Pyrus spp.), and crabapples (Malus spp.). It likes warm wet springs like the one we had this year. There is no cure for fire blight. Prevention is the best solution. Purchase resistant varieties, minimize rapid growth and succulent tissue, prune out blighted twigs and cankered branches. Check out the publications and websites below for more information.
» http://pnwhandbooks.org/plantdisease/pear-pyrus-spp-fire-blight
2016 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllids
Posted on: May 13, 2016 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by IPC, USDA, and generous in-kind contributions by our collaborators.
The first deployment of sticky cards on several of our sites occurred during the past week. More details on the program will be forthcoming, but it will be similar to what we’ve done over the last three years.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Stripe rust in wheat and barley
Small Grains All Locations
stripe rust of wheat
Posted on: May 13, 2016 by Juliet Marshall
Stripe rust continues to spread and is now affecting susceptible spring wheat (UI Pettit) as well as winter wheat. From Oregon to Eastern Idaho, be prepared to apply fungicides to susceptible and moderately susceptible varieties. The fungi infect, take a week or two to develop, and suddenly stripe rust pustules appear seemingly overnight. The application of triazole fungicides are critical in reducing the impact on crops that are already infected, so triazoles and mixed mode of action fungicides are needed to stop the fungi in fields that already have infections. Click on the Cereals Project link to access a Fungicide Efficacy Table and more information about this disease.
Stripe rust in barley has been reported - but at low levels and in one field. This is a different strain, and stripe rust of wheat does not cause stripe rust in barley. Scout fields of wheat and barley, and report occurrence, location and variety to me at jmarshall@uidaho.edu. Thank you to all who have sent me pictures and outbreaks!
Stripe rust in Malheur County
Wheat Northern Idaho
Stripe Rust
Posted on: May 12, 2016 by Bill Buhrig
Stripe rust is being observed in wheat fields between Nyssa and Ontario. This falls in line with previous discoveries of stripe rust in neighbors areas including at the Parma R and E Center. As Juliet Marshall (U of I Aberdeen) suggests, weekly scouting is key and working with your crop consultant is important. Please see the link to the PNW Disease Handbook for more information.
» http://pnwhandbooks.org/plantdisease/wheat-triticum-aestivum-stripe-rust-yellow-rust
Stripe Rust in Parma Area
Wheat Treasure Valley
stripe rust
Posted on: May 11, 2016 by Jerry Neufeld
Dr. Oliver Neher (AMSCO Pathologist) and Dr. Olga Walsh (UI Parma Research and Extension Center) have found and confirmed stripe rust in the winter wheat nursery plots at the University of Idaho, Parma R&E Center.
Below is information Dr. Juliet Marshall (University of Idaho Cereals Extension Specialist) posted on this website regarding stripe rust a few days ago.
I highly recommend that anyone with a field of Brundage examine it closely for stripe rust, looking especially at lower leaves that could have been infected last fall. Snow cover protects wheat as well as the stripe rust from freezing temperatures. Fields that have been under snow will serve as good reservoirs for stripe rust to carry into our spring wheat.
All susceptible varieties should be scouted weekly from now on. Please report infected fields (the approximate location) and send pictures so I can keep alerts updated as the season progresses (jmarshall@uidaho.edu). This helps everyone!
Strobilurin fungicides are excellent preventative fungicides, as are triazoles. Triazoles (or triazole and strobilurin mixes) are more effective if there is a field with established infections. The attached table is (not a complete) list of fungicides put together by a group of pathologists belonging to the NCERA-184, with ratings for degree of control of several wheat diseases.
At this point:
1) Spray fungicides at herbicide timing on susceptible varieties of winter wheat.
2) Select resistant spring varieties, if possible.
3) Be prepared to spray susceptible winter and spring varieties as needed to protect from yield loss - this may be two or more applications of fungicides during the growing season.
4) Scout ALL varieties as there are sometimes changes in the fungal strains, and those varieties that are currently resistant may become susceptible if there are race changes in the fungi.
The use of resistant varieties is the most sustainable and economically viable method of stripe rust control. Breeders work hard to develop resistant varieties in order to help growers save input costs. It is not necessary to spray resistant varieties – in fact, not spraying resistant varieties will contribute to longer-term effectiveness of available fungicides.
» http://www.uidaho.edu/extension/cereals/scseidaho
» http://pnwpestalert.net/uploads/Stripe_Rust_Alert_4-5-16.pdf
» http://pnwpestalert.net/uploads/NCERA_184_Wheat_fungicide_table_2016_V1.pdf
May 9th Tree Fruit Pest Advisory
Tree Fruits All Locations
Codling Moth, Aphids, Fire Blight, Thinning
Posted on: May 9, 2016 by Tony McCammon
Codling moth is in early hatch for most of Southwestern Idaho. Southern and Eastern Idaho are not far behind. open the attached pest advisory for more information on Codling moth management.
Wildflower Day is May 12th at the Malheur Experiment Station!
All Crops All Locations
Posted on: May 2, 2016 by Bill Buhrig
Everyone is invited to attend the Native Wildflower Seed Production Field Day at the Malheur Experiment Station on May 12. Registration starts at 8am and lunch will be served. The flier is attached with more details. It is requested that attendees RSVP so we can get a head count for lunch. Call 541-889-2174 to RSVP or ask any questions you may have. It will be a good time!
Codling Moth at 310 Degree Days
Landscape and Garden Treasure Valley
Codling Moth
Posted on: May 2, 2016 by Rich Guggenheim
Codling Moth Degree Days have reached 310 DD
The peak egg hatch period has begun. Chemical sprays loose effectiveness quickly on expanding fruits . It is important that your fruit is protected with insecticide to prevent larval entry. Keep track of when your first treatment was applied and how long it lasts. If it is waning during the period of peak egg hatch, consider applying your second application sooner (by 1-2 days).
Insecticides that target both larva and egg stages are recommended. Such as: Altacor, Assail, Calypso, and Intrepid. Homeowners should use horticulture oil with a product such as sevin for their first spray. The oil will smother unhatched eggs and the sevin will protect the fruit from hatched larva. Good residue coverage on your fruit is vital during the first generation.
Read and follow all label instructions when applying pesticides. If you use a pyrethroid based insecticides, chose a different class pesticide for your second spray, such as Assail, Calypso, Intrepid, or Imidan. Insects develop resistance to pyrethroids very quickly.
» http://extension.usu.edu/files/publications/factsheet/codling-moths06.pdf
» http://jenny.tfrec.wsu.edu/opm/displayspecies.php?pn=5
» http://www.ipm.ucdavis.edu/PMG/r4300111.html
» http://extension.colostate.edu/topic-areas/insects/codling-moth-control-in-home-plantings-5-613/
Aphids
Landscape and Garden All Locations
Aphid
Posted on: April 28, 2016 by Dian Roberson
Aphids are being reported on succulent new spring growth of a variety of landscape plants from Apple trees to Lupine. Remember, a stiff spray of water could be all it takes to reduce or eliminate populations. Check plants closely for Ladybug Larvae and other predators before taking action with chemicals. Nature may already be on the job!
» http://insect.pnwhandbooks.org/hort/nursery/common/nursery-crop-pests-aphids
» http://insect.pnwhandbooks.org/tree-fruit/apple/apple-woolly-apple-aphid
» http://extension.oregonstate.edu/gardening/how-control-aphids-less-toxic-methods
» https://www.facebook.com/journal.environmental.agricultural.sciences/videos/939087619502267/?fref=nf
Beet Leafminer in Spinach, Swiss Chard and Garden Beets
Landscape and Garden All Locations
Posted on: April 27, 2016 by Ariel Agenbroad
Notice small white clusters of eggs on the backsides of your spinach, beet and Swiss Chard plants? Or are the leaves showing damage that looks papery or like winding trails? Then you're probably hosting the tiny fly Beet Leafminer.
You have several options, prevention, cultural management, and both organic and synthetic chemical treatments.
See http://insect.pnwhandbooks.org/vegetable/vegetable-pests/hosts-and-pests/beet-table-leafminer for more information on how to identify the damage and manage this pest.
» http://insect.pnwhandbooks.org/vegetable/vegetable-pests/hosts-and-pests/beet-table-leafminer
sugarbeet root maggot, 2017
Sugarbeets Treasure Valley
sugarbeet root maggot
Posted on: April 26, 2016 by Jerry Neufeld
The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated nearly 360 growing degree days since January 1, 2017. Peak flight of root maggot flies should occur after 360 accumulated growing degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be very soon.
Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. The link below from the 2017 PNW Insect Management handbook contains additional information. Visit with your field consultant from AMSCO for treatment options.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
» http://uspest.org/cgi-bin/ddmodel.us
» sugarbeet root maggot larvae
Parma/Malheur Cropping Systems Agronomy Field Day - JUNE 20, 8:30 AM
All Crops Treasure Valley
Posted on: April 25, 2016 by Olga Walsh
Contact information: Olga Walsh (University of Idaho, Parma R&E Center): owalsh@uidaho.edu; Bill Buhrig (Oregon State University, Malheur ES): William.Buhrig@oregonstate.edu
LOCATION: University of Idaho, Parma R&E Center, 29603 U of I Lane, Parma, ID, 83660.
Time Activity
8:30 am – 9:00 am Registration
9:00 am – 12 noon Touring the experimental plots/demos
12:00 noon – 1 pm Lunch/indoor presentations
Crops/topics covered: winter & spring wheat, beans, corn, fresh peas/mustard/wheat rotations, nutrient management, water management, weed management, unmanned aerial vehicles, crop sensors. Detailed information will follow shortly.
Please consider to attend/present and spread the word about the field day.
Alfalfa and Cabbage Looper
All Crops All Locations
Alfalfa Looper
Posted on: April 23, 2016 by Rich Guggenheim
Alfalfa Looper is being seen throughout the area. They are similar in appearance to Cabbage looper. The major damage caused by larvae and pupae is contamination of the heads of cole crops and processed foods, and defoliation of peas, alfalfa, beans, mint, and spinach.
» http://horticulture.oregonstate.edu/content/cabbage-looper-alfalfa-looper
» http://www.ipm.ucdavis.edu/PMG/r114300711.html
Weevil in Forage Alfalfa
Alfalfa Northern Idaho
Weevil
Posted on: April 20, 2016 by Bill Buhrig
Weevil are being found in forage alfalfa fields in Malheur County. They are more likely to be approaching damage thresholds in older stands. Please refer to the attached link for more information and work with your crop consultants to determine if a treatment is necessary. Be aware of pre-harvest intervals and how they may interfere with your timing when swathing first cutting. In some instances, swathing may make more sense than applying a plant protectant product.
» http://insect.pnwhandbooks.org/hay-pasture/alfalfa/alfalfa-hay-alfalfa-weevil
Dig In Newsletter
All Crops All Locations
Posted on: April 19, 2016 by Rich Guggenheim
Check out the Spring edition of the Dig In Newsletter:
May ISDA Pesticide Disposal Program
All Crops All Locations
Posted on: April 19, 2016 by Rich Guggenheim
The Idaho State Department of Agriculture is conducting a pesticide disposal program May 9 at Pickles Butte Landfill. 15500 Missouri Ave, Nampa. May 10 at the ITD Maintenance Yard. 550 Indian Head Rd, Weiser. Collection times are 9 am to 1 PM both days.
Lygus Emergence in Alfalfa Seed
Alfalfa Seed Treasure Valley
lygus bug
Posted on: April 19, 2016 by Jerry Neufeld
Thanks to Dr. Jim Barbour, IPM Specialist at the University of Idaho, SW Idaho Research and Extension Center (Parma) for providing this information about Lygus emergence in alfalfa seed.
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition (http://pnwpest.org/cgi-bin/ddmodel.pl?spp=lyg) shows that, depending on your location in the Treasure Valley, we have accumulated 137 degree days between January 1, 2016 and April 19, 2016. Peak emergence of lygus bug 1st and 2nd instar nymphs should occur right around 272 accumulated degree days: this usually occurs around mid-May, and is the time monitoring for lygus bugs in alfalfa seed fields should begin. Right now peak emergence is predicted to occur about the first week of May ( ~May 5). This is about 8 days ahead of the 30 year average.
When using most insecticides, fields should be treated when numbers of lygus bugs reach 4-5 lygus bug nymphs per 180 degree sweep. Growers using Assail, or Beleaf, as stand-alone sprays probably should treat before 4th instar nymphs are detected. You can monitor degree day accumulation using the link provided above as follows:
1) Select the location nearest you by selecting the appropriate pin in the map at the top of the page. The above data are for the Parma location. Results likely will vary depending on the location selected.
2) Select “insects” in the category drop down box under the map, then select the “Lygus bug [alfalfa seed] Ben Simko 2000” model from the “model Parma” drop down box.
3) The predicted date for the 275 degree day accumulation for peak 1st and 2nd instar lygus nymphs will be listed in the “DDs Event” text box. You also can view the full model output by selecting the button labeled “Click here to CALC/ RUN model w/daily output.”
FSMA (Food Safety Modernization Act) Outreach Meeting - April 26
All Crops All Locations
Posted on: April 18, 2016 by Stuart Reitz
FSMA outreach/informational meeting
Tuesday, April 26, 6-8 p.m.
Clarion Inn, 1249 Tapadera Avenue, Ontario, Oregon
The Idaho State Dept Agriculture (ISDA) will host an informational meeting for growers on the status of the FSMA (Food Safety Modernization Act) rules.
This session will focus on the Produce Safety Rule, which relates to on-farm activities for raw agricultural commodities, and the Preventative Controls for Human Food Rule, which covers food manufacturing.
Onions and tree fruits are examples of commodities that are subject to the FSMA Produce Safety Rule.
Please plan to attend if you have questions regarding FSMA in relation to your farm or processing facility operation.
RSVP by April 22 to: Candi Fitch, Idaho Fruit and Vegetable Association, Executive Director, at (208) 722-5111, or candif@cableone.net.
ISDA Pesticide Disposal Program 2016
All Crops All Locations
Posted on: April 18, 2016 by Jerry Neufeld
Idaho State Department of Agriculture is conducting a pesticide disposal program May 9 and 10, at Nampa and Weiser. The pdf below has detailed information.
Exclusion Methods BMP for Elm Seed Bug
Landscape and Garden All Locations
Elm Seed Bug
Posted on: April 15, 2016 by Rich Guggenheim
Elm seed Bug (ESB) is a nuisance pest that may invade residences. The best management practice is to pest proof your home. Elm seed bugs may begin migrating from overwintering sites to their host plants now. Elm Seed bugs emit a foul odor when crushed.
» http://extension.oregonstate.edu/malheur/sites/default/files/spring_2013_esb_fact_sheet.pdf
Malheur County, OR - 24(c) label to apply Outlook to Onions through Drip
Onion Northern Idaho
Yellow Nutsedge
Posted on: April 12, 2016 by Stuart Reitz
MALHEUR COUNTY has a new Special Local Needs (24C) label for applying the herbicide Outlook to onions through drip irrigation for yellow nutsedge control.
Applications can be made from the 2 - 6 leaf stage of the onion crop, A total of 21 oz. per season may be applied to the crop. There is a single application limit of 14 oz of Outlook per acre. The remainder of the 21 oz limit can be applied in a sequential application made at least 14 days later.
Please consult the label for complete instructions.
Research conducted at the Malheur Experiment Station has shown improved yellow nutsedge control with drip applications compared with conventional post-emergence foliar applications (http://cropinfo.net/pdf/ar/2014/2014-011-OnionOutDrip.pdf). Please note the research was conducted with one variety, "Vaquero".
To make drip applications of Outlook, users must have the 24(c) label and the entire Outlook container label in possession at the time of pesticide application.
Barley Yellow Dwarf Virus in the Treasure Valley
Small Grains Treasure Valley
Barley Yellow Dwarf Virus
Posted on: April 8, 2016 by Jerry Neufeld
Dr. Olga Walsh, Research Assistant Professor of Cropping Systems Agronomy, at the U of Idaho Southwest Idaho Research and Extension Center (Parma) is reporting that Barley Yellow Dwarf virus has been identified in winter wheat fields near Parma and near Nampa. Click on the link below to see images of BYDV in winter wheat. Dr. Juliet Marshall posted an alert on April 5, 2016 containing a great deal of management information about BYDV.
» http://idcrops.blogspot.com/2016/04/barley-yellow-dwarf-virus-in-winter.html
Cereal Leaf Beetle near Parma
Small Grains Treasure Valley
Cereal Leaf Beetle
Posted on: April 8, 2016 by Jerry Neufeld
Dr. Olga Walsh, Research Assistant Professor of Cropping Systems Agronomy, at the U of Idaho Southwest Idaho Research and Extension Center (Parma) is reporting that cereal leaf beetle adults are actively flying in winter wheat fields near Parma. Adults have been laying eggs and larvae are beginning to emerge. The cereal leaf beetle has a variety of hosts among cereals and grasses with preference to oat, barley, wheat, rye, timothy, fescue, grain sorghum and corn. Substantial crop yield loss and quality decrease can be expected due to lost photosynthetic activity resulting from the feeding damage.
Scouting of fields is vital both before and during the boot stage to assess for cereal leaf beetle presence and damage. It is recommended to scout weekly by walking through the field in a “W” pattern for best coverage. Stop at 5-10 locations depending on field size and examine 10 plants per location. Count the number of eggs and larvae per plant for smaller plants or per stem for larger plants.
Treatment thresholds: 3 larvae per plant and/or 3 eggs per plant before boot stage, and 1 larva per flag leaf after boot stage.
Click on the links below for management information from the 2016 PNW Insect Management Handbook and to see images of CLB life stages.
» http://insect.pnwhandbooks.org/agronomic/small-grain/small-grain-cereal-leaf-beetle
