Search Results

Ag Talk Tuesdays resume in 2023

All Crops    All Locations

Posted on: April 17, 2023 by Kasia Duellman

Mark your calendars for every first and third Tuesday in May, June, July and August, 11:00 AM to Noon for Ag Talk Tuesday - live, online sessions (via Zoom).

Presented by University of Idaho Extension, the 2023 sessions of Ag Talk Tuesday continue with the second session of the season, this Tuesday, May 16. Sessions start at 11:00 AM with crop updates (everyone is invited to contribute). Following crop updates, enjoy a Featured Topic presented by a Guest Speaker. For this second session, we have invited Albert Adjesiwor with University of Idaho to discuss the Pacific Northwest Herbicide Resistance 

Initiative and Idaho.

» https://www.uidaho.edu/extension/news/ag-talk-tuesday

» https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration

Lions and Tigers and Bears? Not quite, but Snow mold, dwarf smut and voles...

All Crops    All Locations

Snow molds, dwarf bunt and voles

Posted on: March 30, 2023 by Juliet Marshall

Spring is…. Here? According to the calendar, yes. But
looking out at additional snow this morning in southeast Idaho and reviewing
the extended forecast, mother nature has stubbornly dug in her heels on winter.

The implications are that winter cereals are likely to be at
risk for damage and spring grain will never get planted. Or maybe it just seems
that way.

The extra moisture we are receiving with these consistent
spring snows and rain events makes so many of us relieved and happy. Our
subsoil moisture has been replenished and the reservoir system is recharging.
What a stroke of fortune!

Some areas in southeast Idaho haven’t seen bare ground since
early November. A mild fall facilitated the establishment and early growth of
winter wheat until cold temperatures rapidly shut down the season. However, what
is the outlook for the crop health of winter grain given how long we’ve had
snow cover?

Like any “good scientist”, I will say – That depends. When
we have long periods of time where snow covers the ground, two diseases can
become a major problem: snow mold and dwarf bunt. Snow can insulate the ground,
keeping the surface moist, preventing the soil from freezing and allowing these
cold-tolerant fungi to infect and grow on winter wheat. While difenoconazole seed
treatments are effective against dwarf bunt on susceptible varieties, there is
very little fungicide protection that is effective for snow mold when the snow
coverage exceeds three months – or in this year, up to five months!

Several years ago, I participated in a study that examined
the genetics of snow mold resistance up at the University of Idaho Tetonia
R&E Center. There were varieties that had a much higher tolerance for
fungal attack based on their genetic traits – the varieties that accumulated
more complex carbohydrates were less susceptible to being killed by snow mold
fungi. That meant that varieties when planted early enough to establish a
strong crown and high carbohydrate reserves survived long periods of time under
snow where there is very little sunlight. That was quite a while ago, and those
tolerant varieties are no longer grown.

Snow mold fungi feed off leaves, slowly depleting the
carbohydrates (or complex sugars) that plants need to survive – kind of like a
slow death by a thousand paper cuts. The longer the time spent under the snow,
the less the likelihood that the plants can survive. One of the stories I used
to hear was that growers would have fly ash flown on the fields to increase
rapid melting of the snow. That would require sunny days without additional
snow accumulation. That hasn’t happened this year. However, wheat can make a
recovery as long as the crown survives. After snow melt, check to see if the
crowns are white and firm. If they are soft and brown, then the plant is dead.

To add insult to injury, a healthy wheat stand under long
periods of snow cover allows voles to proliferate like mad! While worse in alfalfa,
stands can be significantly reduced in winter wheat as well. See the Feb 8
article written for “Catching up with CALS” with strategies and advice by
Danielle Gunn and Joseph Sagers: https://www.uidaho.edu/news/news-articles/colleges/cals/2023/020823-vexed-voles

As I head further south from Idaho Falls, I see large areas
of water ponding in low areas of the fields. The freeze-thawing cycles that
occur with substantial water saturation reduces plant survival as plants suffer
from frost-heaving, which rips and severs roots, and from anoxia – no oxygen
under flooded areas.

My best advice for spring grain, is to plant as soon as you
can (and not to bury the tractor in the low spots!) and to be sure the spring
grain is protected with fungicides that are effective against Pythium. These
fungal-like pathogens love cool and wet conditions and require specialized
“fungicides” that include metalaxyl. With the prevalence of metalaxyl-resistant
Pythium in the area, you may also need to consider the relatively new products
ethaboxam (Intego from Valent) and picarbutrazox (Vayantis from Syngenta).

In the meantime, we sit and wait. Good luck.

» https://www.uidaho.edu/extension/cereals/scseidaho

» https://www.uidaho.edu/news/news-articles/colleges/cals/2023/020823-vexed-voles

Need to study for a pesticide exam?

All Crops    All Locations

Posted on: March 23, 2023 by Kimberly Tate

The UI Extension Pesticide Safety Education Program will be offering pre-license trainings ONLINE, via Zoom. This 4-day class is designed to be both with live instructors and work on your own, at your own pace. Students are required to have a computer or smart tablet with internet access. You will learn core pesticide safety practices and prepare for the following Idaho State Department of Agriculture pesticide exams; Private Applicator, Professional Applicator: Core Competency; Agricultural Herbicide; Agricultural Insecticide; Ornamental Herbicide; Ornamental Insecticide; General Pest; Right of Way; Rodent Control; and Chemigation. 

Classes meet twice daily Monday through Thursday. Our next training session is scheduled for April 3-7, 2023, from 9-11:30 am (MST) and 1:30-4 pm (MST). Registration closes, April 3, 2023 at 8 am (MST).

Enrollment includes access to 12-eLearning modules and educational materials until May 15, 2023. The class fee $50 per student. 

To register, visit our Marketplace website link.

» https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true

» 2023-PreLicense_Hybrid_POSTER.pdf

2023 Pruning Deciduous Trees & Shrubs

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho

Tree & Shrub Pruning

Posted on: March 17, 2023 by Ruth Givens

The dormant season is a great time to prune deciduous trees (landscape & fruit) and shrubs. As a general guide remove no more than one-third of the tree when pruning. Below are a few resources on how to prune. 

·       Training Young Shade Trees, University of Idaho

·       Pruning Deciduous Shade Trees, University of Arizona  

·       Pruning Deciduous Trees, University of New Hampshire 

·       Deciduous Fruit Tree Pruning Videos, University of Arizona (https://extension.arizona.edu/deciduous-fruit-tree-pruning-videos)

·       How to Prune Trees Video, Colorado State University 

Prune shrub species which grow on the current season’s growth during the dormant period, usually late winter early spring. A few examples of flowering shrubs in this grouping including butterfly bush, heather, heavenly bamboo, hydrangea, shrubby roses and rose of sharon. Reference the third link for more information. 

For shrub species which form buds on last season’s growth prune these species within about two months after the flowers fade. On these species, flower buds form in late summer and early fall. Winter pruning decreases the number of flowers the following spring as branches containing flower buds are removed. A few examples of flowering shrubs in this grouping include azaleas, lilac, magnolia, mockorange, serviceberry, and witchhazel. Reference Pruning Ornamental Trees & Shrubs, from Purdue University. (https://www.extension.purdue.edu/extmedia/HO/HO-4-W.pdf)

For most areas of Idaho, plants that bloom before June 1 formed the flowers the previous year on old wood. Those that bloom after June 1 form flowers on new growth. Keep in mind that this is rough guideline.

The City of Nampa Parks & Forestry Department will offer tree pruning classes. See the attached file for more details. 

If you have additional questions, contact your local University of Idaho Extension office. To search by county visit https://www.uidaho.edu/extension/directory/counties

Additional Resource 

PNW 400 Training & Pruning Your Home Orchard – 

https://extension.oregonstate.edu/pub/pnw-400

The Second Annual Organic Agriculture Workshop Thursday, March 2nd

All Crops    All Locations

Posted on: February 28, 2023 by Ariel Agenbroad

The Second Annual Organic Agriculture Workshop
hosted by the University of Idaho on Thursday, March 2^nd from
10:00-1:30 PM MST.

Registration (and lunch) are free! If
you are planning to attend in person, please register by February 28^th.
You can register at: https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw

This is an IN-PERSON workshop at the University of Idaho
Caldwell Research and Extension Center (1904 E. Chicago Street, Suite AB
Caldwell, ID 83605).

There is also an option to attend virtually. Those
attending in-person will receive a free lunch. There is also an opportunity to
tour Peaceful Belly Farm, which is located about 15 minutes from the meeting
location, and hear about the ways that they are honoring and fostering a
collaboration with nature to build ecological resilience and community on their
farm.

Workshop
Details:

1. Hear
   important updates from ISDA and learn about the exciting new national
   Transition to Organics Partnership Program (TOPP)
2. Learn
   more about the cryptic and amazing world of soil biology
3. Learn
   more about how your management practices influence earthworms and
   nematodes
4. Share
   experiences and knowledge to better understand the challenges and
   opportunities with soil fauna assessments

Registration (and lunch) are free! If
you are planning to attend in person, please register by February 28^th.
You can register at: https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw 

» https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw

» Event Flyer

2023 Cereal Schools are this week Feb 7 - 10, 2023

All Crops    Eastern Idaho, Magic Valley

Cereals - wheat and barley

Posted on: February 6, 2023 by Juliet Marshall

Southern / southeastern Cereal Schools will be this week at various locations - Burley, Pocatello, Idaho Falls, St. Anthony, Grace and Preston. See attached flyer for additional information.

» Cereal_School_flyer_2023.pdf

Miller Research Winter 2023 Potato Disease Management Seminar

Potato    All Locations

Posted on: January 12, 2023 by Jeff Miller

Miller Research will be holding its annual Potato Pest
Management Meeting in person on February 16, 2023, at the Historic Wilson
Theater in Rupert, ID. The meeting will run from 9:00 am to 12:15 pm with a 15-minute
break at 10:30 am. CCA credits and ID, WA, and OR pesticide recertification
credits have been requested for the meeting.

For those not able to attend in person, a virtual option
will be available. If you want to participate by Zoom, contact Cheryn Suarez
(cheryn@millerresearch.com) after registration and she will
send you the link to attend. Virtual attendees will need to answer questions on
Zoom to verify participation. Thus, each person desiring credits needs to be
logged in and stay logged in for the duration of the meeting. Contact us if you
need to make other arrangements.

Registration is $20 to cover the cost of the meeting.
Additional proceeds will be donated to the local 4-H program.

The agenda is in the attached file.

» https://millerresearch.com/event/miller-research-winter-2023-potato-disease-management-seminar/

» 2023_Seminar_Announcement.pdf

Ornamental Pesticide Applicators Pre-License Training

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho

Pesticide Pre-license Training

Posted on: January 5, 2023 by Ruth Givens

The University of Idaho (UI) Extension Pesticide Safety Education Program (PSEP) will be offering pre-license training during the 2023 Idaho Horticulture Expo in Boise. This training will be in-person with a two-day agenda. Focus will be on the following categories: Ornamental Insecticide (OI), Ornamental Herbicide (OH), General Pest (GP), and Core (CO). 

Registration includes access to online modules and study materials housed on the National Extension Foundation website. These materials prepare students for the 2-day class and the statewide exams. ALL materials will be available to each registered student with continued access until three weeks after the training. 

January 19 – 20, 2023, daily at 9am – 4pm (MST)

Boise Centre, 850 W Front St., Boise 83702

The cost is $75 per student. To register, visit our website https://www.uidaho.edu/extension/ipm/pesticide.

For more information, contact UI Extension Sr. Instructor, Kimberly Tate at (208) 364-4581 or email ktate@uidaho.edu. 

Note: We will be offering two prelicense hybrid courses this spring; one in March and the other in April. More information will be available in February.

PNW Pest Alert Network Survey

All Crops    All Locations

PNW Pest Alert Network Survey

Posted on: December 20, 2022 by Ruth Givens

Ruth Givens and Ronda Hirnyck from the University of Idaho Extension are conducting a research study. The purpose of the research is to evaluate the effectiveness of the PNW Pest Alert Network. You are being asked to participate in this study because you are a subscriber to thePNW Pest Alert Network alerts.

Your participation will involve completing a voluntary survey which will provide feedback to the principal investigators. The survey should take about 3 minutes to complete. The survey includes questions such as indicate how you have used the information in the past year? How did you access the PNW Pest Alert Network alerts? How useful were the landscape and garden alerts? Your involvement in the study is voluntary, and you may choose not to participate. You can refuse to answer any of the questions at any time. There are no names or identifying information associated with your responses. There are no known risks in this study, but some individuals may experience discomfort or loss of privacy when answering questions. Data will be housed on a password protected server and deleted upon completion of the study.

The findings from this project will provide information on providing better outreach programming to control landscape and garden pests. If published, results will be presented in summary form only.

Special Incentive: Surveys completed by January 17 will be entered into a drawing for one of three $75 certificates to Texas Roadhouse.  Three lucky winners will be announced on the website and the gift cards will be sent out later in January.

If you have any questions about this research project, please feel free to call Ruth Givens at 208-459-6003. By submitting this survey, you certify that you are at least 18 years of age and agree to participate in the above described research study.

Start Survey Here

2022 Pulse Crop Survey

Dry Beans    Treasure Valley, Treasure Valley - Idaho, Eastern Idaho, Magic Valley

2022 Pulse Crop Survey

Posted on: December 8, 2022 by Ruth Givens & Ronda Hirnyck

The Pulse Crop Survey is an annual survey of pulse crop growers and consultants about pulse crop diseases and their management, conducted by Montana State University. Through this survey we aim to understand which resources pulse growers and consultants seek out for information, which diseases challenge pulse crop production, which integrated pest management practices are implemented, and how effective they are perceived to be. 

Please consider participating in this survey. Your participation in this survey will help us identify research needs and resources needed to support economic and sustainable pulse crop production in the Northern Great Plains and Pacific Northwest. Your participation in this survey is entirely voluntary and anonymous. This survey should only take 10 minutes of your time.

You can access the survey by clicking on the following weblink: https://bit.ly/Pulses2023 

PNW PestAlert Landscape & Garden Survey

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho

Home Garden & Landscape Survey

Posted on: November 21, 2022 by Ruth Givens

Ruth Givens from the University of Idaho Extension, Canyon County is conducting a research study. The purpose of the research is to evaluate the effectiveness of the PNW Pest Alert Network with respect to Landscape & Garden. You are being asked to participate in this study because you are a subscriber to the landscape and garden alerts.

Your participation will involve completing a voluntary survey which will provide feedback to the principal investigator. The survey should take about 3 minutes to complete. The survey includes questions such as indicate how you have used the information in the past year? How did you access the PNW Pest Alert Network alerts? How useful were the landscape and garden alerts? Your involvement in the study is voluntary, and you may choose not to participate. You can refuse to answer any of the questions at any time. There are no names or identifying information associated with your responses. There are no known risks in this study, but some individuals may experience discomfort or loss of privacy when answering questions. Data will be housed on a password protected server and deleted upon completion of the study.

The findings from this project will provide information on providing better outreach programming to control landscape and garden pests. If published, results will be presented in summary form only.

Special Incentive: Surveys completed by December 11 will be entered into a drawing for one of three $75 certificates to Texas Roadhouse.  Three lucky winners will be announced on the website and the gift cards will be sent out later in December.

If you have any questions about this research project, please feel free to call Ruth Givens at 208-459-6003. By submitting this survey, you certify that you are at least 18 years of age and agree to participate in the above described research study.

Start Survey HERE.

Fall Control for Coryneum Blight & Peach Leaf Curl

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho

Coryneum Blight & Peach Leaf Curl

Posted on: October 28, 2022 by Ruth Givens

Coryneum blight (Thyrostroma carpophilum) & Peach leaf curl (Taphrina deformans)

Coryneum blight or commonly known as shothole disease which is caused by fungus Thyrostroma carpophilum. Trees which have been affected develop small, round, tan-to-purpleish spots which then dry and fall out of the leaf producing a shothole effect. Most cultivars of peach, nectarine, apricot, and almond are very susceptible while cherry and plum are less susceptible. In addition, ornamental plant species can show damage. Beyond the leaf, symptoms can also be seen on the current season and 1-year old fruiting wood. Infections consist of round, reddish spots which are slightly sunken.

Chemical control will occur at 50% leaf drop in late autumn by spraying with a copper-based fungicide, chlorothalonil, or Bordeaux mixture. Follow the label instructions for rate and application procedure. Prune out affected twigs when practical. Culturally control shothole disease by not allowing irrigation sprinklers to wet the tree foliage, select cultivars which are disease resistant when available, and remove and dispose of affected foliage and twigs. 

Peach leaf curl caused by fungus Taphrina deformans and is specific to peaches and nectarines. Trees that are infected will have leaves that are distorted or curl, appear blistered, and develop a yellow or red color.   

Control can be achieved by a single fungicide application in the fall after 90% of the leaves have fallen. Chemicals used for control are copper products or chlorothalonil. Follow the label instructions for rate and application procedure. Homeowners should also remove and dispose of infected leaves that have fallen to the ground, to remove as much inoculum as possible. Resistant varieties can be selected for additional cultural control.

Link:

Peach Leaf 

PNW Handbook: https://pnwhandbooks.org/plantdisease/host-disease/peach-prunus-persica-leaf-curl

USU: https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1736&context=extension_curall

Shothole

PNW Handbook: https://pnwhandbooks.org/plantdisease/host-disease/peach-prunus-persica-shothole

UC IPM: http://ipm.ucanr.edu/PMG/GARDEN/FRUIT/DISEASE/shothole.html

UI Extension PSEP Recertification Webinar Series

All Crops    All Locations

Posted on: October 26, 2022 by Kimberly Tate

Need Pesticide Credits?

Join the University of Idaho (UI) Extension Pesticide Safety Education Program for the 2022 Fall Recertification Webinar Series via Zoom (no account/camera needed). Each webinar is $10 per applicator. Completed webinars receive 1 Idaho Department of Agriculture pesticide credit. 

Mark your calendar for the following webinar topics and their corresponding dates/times:

• Nov. 1 from 10–11 a.m. (MST): Control of Commensal Rodents on Farms and Ranches in Idaho
• Nov. 8 from 10–11 a.m. (MST): Pesticide Labels: What to know for successful pesticide applications
• Nov. 15 from 10–11 a.m. (MST): Russian Olive Management
• Nov. 29 from 10–11 a.m. (MST): Using UI Extension Tools for Pest Management
• Dec. 6 from 10–11 a.m. (MST): Herbicide Resistant Weeds in Idaho
• Dec. 13 from 10–11 a.m. (MST): Recent Invasive Insects in Idaho 

For more information contact UI Extension Instructor, Kimberly Tate at (208) 364-4581 or email ktate@uidaho.edu.

» https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true

» UI Extension PSEP 2022 Fall Recertification Webinar Series Poster

Ag Talk Report newsletter - October 2022 issue now available

All Crops    All Locations

Posted on: October 20, 2022 by Kasia Duellman

The October 2022 issue of the Ag Talk Report newsletter is now available as an attached PDF file.

This issue will soon be available online at our website, where you can also find archived issues: https://www.uidaho.edu/extension/news/ag-talk-tuesday 

» https://www.uidaho.edu/extension/news/ag-talk-tuesday

» ATT_v4i3.pdf

Idaho Association of Plant Protection 2022 Annual Meeting

All Crops    All Locations

Posted on: October 19, 2022 by Jeff Miller

You are invited to attend the 2022 annual meeting of
the Idaho Association of Plant Protection in Burley, ID, at the Best Western
Inn & Convention Center. The conference will cover all aspects of plant
protection including entomology, nematology, weed science, and plant pathology. The agenda is attached. A total of 6 Certified Crop Advisor (CCA, 5 PM and 1 CM) and 6 Pesticide Recertification credits (ISDA) have been awarded.

Registration begins at 12:30 p.m. on Wednesday and the
program will begin at 1:00 p.m. Registration costs $30.00 and can be made by check or cash at
the door. Credit card payments will be accepted at
the door but will be assessed a 6% processing fee. If you need to pay by credit card ahead of time, please contact Jeff Miller at jeff@millerresearch.com. Online registrations will
close Tuesday, November 1. 

Hotel reservations must be made on your own. Special
hotel rates have been negotiated for the participants: $82.00 per night for the Burley Inn (www.burleyinn.com
or 208-678-3501) and $62.00 for the Budget Motel nearby (www.burleybudgetmotel.com
or 208-678-2200).

If you have questions, please contact the co-chairs
for this year: Bill Buhrig (william.buhrig@simplot.com, 208-954-0576) or Albert Adjesiwor (aadjesiwor@uidaho.edu, 208-423-6616).

» https://millerresearch.com/event/2022-idaho-association-of-plant-protection/

» IAPP_2022_Meeting_Invitation.pdf

2022 Fall Lawn Fertilization & Care

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho, Northern Idaho

2022 Fall Lawn Fertilization & Care

Posted on: September 16, 2022 by Ruth Givens

University of Idaho turf specialists recommended splitting the application of lawn fertilization into three (3) applications; early May, early September, and late October/November. Review the first reference below to identify fertilization application amounts using a soil test result or the second reference for general recommendations for southern Idaho. Apply according to label directions.

If your lawn is suffering from soil compaction or development of a thick thatch layer fall is the optimal time to core aerate.  For more information on core aeration review Lawn Aeration.

Fall is a great time to control perennial weeds in the landscape if opting to use herbicides. Perennials will begin storing carbohydrates in the roots promoting herbicides to be drawn deeper into the root system and allowing for better control.

If there are additional questions on lawn care or weed management reach out to a local University of Idaho Extension office.

References:

Using Soil Test for Garden Fertilization

https://drive.google.com/file/d/16svAaPIqRcsN8VyGMc_p5SMoOO-hImv8/view

Southern Idaho Lawns

https://drive.google.com/file/d/1EcuP1OErzgRMMHN8l4fugN0VEXkLI-gv/view

Lawn Aeration

https://planttalk.colostate.edu/topics/lawns/1505-lawn-aeration/

Find University of Idaho Extension

https://www.uidaho.edu/extension/directory/counties

final report of 2022 Idaho potato psyllid monitoring

Potato    All Locations

potato psyllid

Posted on: September 16, 2022 by Erik Wenninger

This is the final report of the 2022 potato psyllid / Lso monitoring season. 

The two psyllids captured last week tested negative for Lso, the bacterium associated with zebra chip disease (ZC). 

It was an interesting year with very low psyllid captures overall, but relatively high incidence of Lso. About 22% of all psyllids tested positive for Lso compared to around 1% in most recent years. It is too soon to tell what this low psyllid / high Lso season means for ZC in tubers at harvest. Our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tubers from fields at higher risk sooner rather than later. 

Thanks again to all of our cooperators!

With the monitoring season behind us, we urge you to kick the proverbial tires of our new Idaho Pest Monitoring site: https://idahopestmonitoring.org/

Please check it out and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but this is obviously still a work in progress.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news

--Click on the link under “Updated weekly reports” for details on trap captures.

--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.

» https://idahopestmonitoring.org/

2022 Idaho Association of Plant Protection - Call for Presentations

All Crops    All Locations

Posted on: September 13, 2022 by Jeff Miller

This is an invitation and call for papers for the 2022 annual meeting of the Idaho Association of Plant Protection in Burley, ID, at the Best Western Inn & Convention Center. The conference will cover all aspects of plant protection including entomology, nematology, weed science, and plant pathology.

Please consider contributing research results, observations, unusual pest and disease occurrences and topics which could be discussed as a group, etc. to the meeting. Each presentation will be allotted at least a 20-minute time slot. A final program will be advertised in October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $30.00 and can be made by check or cash. Credit card payments will be available online or will be accepted at the door but will be assessed a 6% processing fee. Online registrations will close Tuesday, November 1. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.

Hotel reservations must be made on your own. Special hotel rates have been negotiated for the participants: $82.00 per night for the Burley Inn (www.burleyinn.com or 208-678-3501) and $62.00 for the Budget Motel nearby (www.burleybudgetmotel.com or 208-678-2200).

Please reply by email or complete and return the attached sheet. If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information. Responses can be sent to:

Bill Buhrig (william.buhrig@simplot.com)

Albert Adjesiwor (aadjesiwor@uidaho.edu)

» IAPP_2022_Meeting_Announcement.pdf

2022 Reduce Watering Frequency During Fall

General Landscape and Garden    Treasure Valley, Treasure Valley - Idaho, Northern Idaho

Reduced Watering

Posted on: September 9, 2022 by Ruth Givens

The days are shortening, and evening temperatures are cooling. Now is the time to adjust the frequency between irrigation days for the landscape and garden.

Lawn irrigation systems can be set to increase the number of days between irrigation based on soil texture. Adjusting the frequency of watering versus the run time allows for replenishment of the water holding capacity and usable water in the soil profile. Review reference links one and two below for greater explanation. This deep and infrequent method encourages a deeper root growth of plants.

A reminder to deep water trees and shrubs prior to shutoff of irrigation water.

References:

Watering Home Lawns and Landscape, University of Idaho

https://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1098.pdf

Watering Home Lawns: How Much and How Often, University of Idaho

https://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1157.pdf

psyllid monitoring update - 8 Sep 2022

All Crops    All Locations

potato psyllid

Posted on: September 8, 2022 by Erik Wenninger

This week we received traps from 37 of the 72 fields that we had been monitoring this year. Thirteen fields have been vine killed and were not monitored. We found a total of only 2 psyllids in 1 (3%) of the 37 fields. Traps from several fields have yet to be returned to us and these results will be added to the detailed spreadsheet when we receive them.

The two psyllids captured this week were from a field in Canyon County.

None of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). 

Psyllid captures continue to be especially low this week, and thankfully we’ve been seeing less and less Lso in recent weeks. 

This week’s collection of traps represents the end of the official monitoring season. Next week we will post Lso results as well as a season wrap up. 

In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/

Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news

--Click on the link under “Updated weekly reports” for details on trap captures.

--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

psyllid monitoring update - 1 Sep 2022

Potato    All Locations

potato psyllid

Posted on: September 1, 2022 by Erik Wenninger

This week we received traps from 57 of the 72 fields that we are monitoring this year. Four fields have been vine killed and were not monitored. We found a total of only 5 psyllids across 5 (9%) of the 57 fields observed. 

Psyllids were captured in the following counties: Canyon (2 fields), Elmore (1 field), and Twin Falls (2 fields).

None of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). 

Psyllid captures were especially low this week, and thankfully we’ve been seeing less and less Lso in recent weeks. With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tubers from fields at higher risk sooner rather than later. 

In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/

Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news

--Click on the link under “Updated weekly reports” for details on trap captures.

--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.

» https://idahopestmonitoring.org/

» http://www.uidaho.edu/cals/potatoes/news

» https://potatoes.decisionaid.systems/

psyllid monitoring update, 26th Aug 2022

Potato    All Locations

potato psyllid

Posted on: August 26, 2022 by Erik Wenninger

This week we received traps from 61 of the 72 fields that we are monitoring this year. Two fields have been vine killed and were not monitored; we are still waiting to receive traps from 9 fields in the Treasure Valley. We found a total of 16 psyllids across 10 (16%) of the 61 fields observed. 

Psyllids were captured in the following counties: Canyon (2 fields), Gooding (1 field), Twin Falls (3 fields), Cassia (2 fields), and Minidoka (2 fields). 

Two of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). One was from a field in Canyon County and one from a field in Minidoka County.

We continue to see very low captures of psyllids relative to previous years and numbers are perhaps even lower this week than last week. However, we have also seen relatively high incidence of Lso, especially during previous weeks. With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tuber from fields at higher risk sooner rather than later. 

In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/

Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news

--Click on the link under “Updated weekly reports” for details on trap captures.

--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.

» https://idahopestmonitoring.org/

» http://www.uidaho.edu/cals/potatoes/news