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Peach Leaf Curl Spray

Landscape and Garden    All Locations

Taphrina deformans

Posted on: October 31, 2018 by Maria Held

If you experienced peach leaf curl on your trees this spring it is time for treatment when most of the leaves are off the tree. Resistant varieties are a good option for home gardeners.

2018 Idaho Association of Plant Protection Annual Meeting Final Agenda

All Crops    All Locations

Posted on: October 30, 2018 by Jeff Miller

The finalized agenda for the 2018 Idaho Association of Plant Protection is attached here. The meeting is November 7 and 8 at the Canyon Crest Event Center in Twin Falls. Registration begins at 12:30 on Wednesday, Nov. 7 and the meeting begins at 1:00. The cost to attend is $15 whether you attend one or both days and can only be paid via cash or check. The meetings run from 1:00-5:00 pm on Wednesday and from 8:00-12:00 pm on Thursday.

A total of 3.5 CCA credits and 4 ISDA credits are available each day. You must attend the entire day to get the credits for that day. Please contact James Woodhall at jwoodhall@uidaho.edu if you have any questions.

Idaho Ag Outlook Seminar - 2018

All Crops    All Locations

Posted on: October 30, 2018 by Jerry Neufeld

Click on the pdf below for information about the Idaho Ag Outlook presented by University of Idaho CALS Extension and Research faculty. The locations are Idaho Falls, Burley and Caldwell from December 11 to 13.

2018 Idaho Association of Plant Protection Annual Meeting

All Crops    All Locations

Posted on: October 15, 2018 by Jeff Miller

The 2018 Idaho Association of Plant Protection will hold its annual meeting Wednesday, November 7 (1:00-5:10) and Thursday, November 8 (8:00-12:00) at the Canyon Crest Dining and Event Center in Twin Falls, ID (330 Canyon Crest Drive, Twin Falls, ID). Registration will begin at 12:00 on Wednesday. The agenda is included in the attachment to this post.

The cost for this meeting is $15 payable by check or cash. Hotel reservations if needed must be made on your own.

Certified Crop Advisor (CCA) and Idaho State Pesticide credits have been requested.

IAPP chairs for 2018 are James Woodhall and Kelly Luff.

Freeze Warning

Landscape and Garden    Treasure Valley - Idaho

Posted on: October 13, 2018 by Maria Held

There is a freeze warning for the lower Treasure Valley for tonight. Protect tender plants and be sure to cover them. Information on season extension and frost protection is found in the links below.

Final 2018 psyllid monitoring update

Potato    All Locations

Potato Psyllid

Posted on: October 5, 2018 by Lucy Standley

This week we collected 2 psyllids from sticky traps in one intense field in Twin Falls County. We only had traps deployed in 2 fields given that all of the other fields in the monitoring program had been vine killed or harvested.

One of the psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. This is only the third psyllid this season to test positive, and this year still has shown the lowest overall incidence in Lso for any season we have been monitoring. Nevertheless, this finding underscores the importance of maintaining an IPM program through the end of the season. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.

This week’s report concludes the University of Idaho psyllid/Lso monitoring program. We will only provide an update next Friday if we detect Lso in the psyllids collected this week.

Thanks to all of the growers, crop consultants, and other industry folks who contributed to this work.

A summary of this year’s results is expected to be presented at the Idaho Association of Plant Protection meeting in Twin Falls in November and at the Idaho Potato Conference.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

Psyllid update 28 September 2018

Potato    All Locations

Potato Psyllid

Posted on: September 28, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields) and Twin Falls (1 field).

This week, we collected 9 psyllids from sticky cards (across 4 intense sites).

Most of the 95 fields that were in the monitoring program have been vine killed or harvested. We had traps deployed in all 6 of the remaining fields and found psyllids in 4 of them (66.7%).

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence has been considerably lower than in all previous years. Nevertheless, we urge growers and crop consultants to maintain their IPM programs. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.

“Heat maps” of this week’s results will not be made given that the low number of sites remaining tends to result in skewed maps.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

Psyllid update 21 September 2018

Potato    All Locations

potato psyllids

Posted on: September 21, 2018 by Erik Wenninger

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Jerome (1 field), and Twin Falls (1 field).

This week, we collected 40 psyllids from sticky cards (across 6 intense sites and 0 light sites). We also collected a few eggs and nymphs in leaf samples at two sites in Canyon County; when we have found immature psyllids in the past, they have typically occurred very late in the season as is the case here.

Most of the 95 fields that were in the monitoring program have been vine killed or harvested. We had traps deployed in all 14 of the remaining fields and found psyllids in 6 of them (43%). There are now just a handful of fields being monitored for next week’s report.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence has been considerably lower than in all previous years. Nevertheless, we urge growers and crop consultants to maintain their IPM programs. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.

“Heat maps” of this week’s results will not be made given that the low number of sites remaining tends to result in skewed maps.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

Call for Topics for the 2019 Idaho Potato Conference

Potato    All Locations

Posted on: September 17, 2018 by Kasia Duellman

This is the first call for topics for the 2019 Idaho Potato Conference that will take place in Pocatello on January 23 and 24, 2019 (Note: the ICIA Seed Seminar will be held the day before, as usual - January 22, and you are welcome to submit ideas for Seed Seminar as well).

Please provide your ideas for potential workshops and presentations for this year's conference to Kasia Duellman (kduellman@uidaho.edu) or Pam Hutchinson (phutch@uidaho.edu) by September 25th so we can put together a preliminary list for a program planning meeting to be held at a date in early October to be determined.

Psyllid update 14 September 2018

Potato    All Locations

Potato Psyllid

Posted on: September 14, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Twin Falls (2 fields), and Cassia (6 fields).

This week, we collected 84 psyllids from sticky cards (across 7 light sites and 5 intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 26 of the remaining fields and found psyllids in 12 of these 26 fields (46.2%).

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

With so few sites still being monitored this late in the season, it is possible that the heat maps may appear a bit skewed.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

Treasure Valley Tomato Taste Off & Classes

Landscape and Garden    Treasure Valley

Posted on: September 10, 2018 by Maria Held

Did you grow an awesome tomato this summer?
Enter it in the 2nd Annual FREE Treasure Valley Tomato Taste Off at the Indian Creek Festival in Caldwell on Saturday, September 15, 2018!

Entries can be dropped off at the Canyon County Extension Office, 501 Main St, Caldwell on Friday September 14th from 1:00 PM-4:30 PM or bring them to our festival booth from 9:00 AM-10:30 AM on Saturday, September 15, 2018. Questions? Contact the Extension Office @ 208-459-6003
Tasting and voting will be from 11:00 AM-1:00 PM
There will be prizes for the best Slicing, Cherry, and Paste tomato!

Classes will be held in the afternoon
2:00 PM Pollinators: More than Bees
3:00 PM Tomato Basics: From Seed to Salsa
4:00 PM Growing Tomatoes on a Trellis
5:00 PM Canning Tomatoes

Psyllid update 7 September 2018

Potato    All Locations

Potato Psyllid

Posted on: September 7, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (2 fields), Twin Falls (1 field), and Cassia (4 fields).

This week, we collected 19 psyllids from sticky cards (across 4 light sites and 3 intense sites).

We had traps deployed in all 32 of the 32 fields (100%) monitored and found psyllids in 7 of the monitored fields (21.8%). 63 of the 95 total fields that we were sampling have been vine-killed.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

Powdery Mildew Outbreak

Landscape and Garden    Treasure Valley

Powdery Mildew

Posted on: September 6, 2018 by Maria Held

Powdery mildew has been observed on squash, zucchini and carrots. It affects almost any type of plant including ornamentals such as peony, lupine and pansies.
Powdery mildews are characterized by spots or patches of white to grayish, talcum-powder-like growth.
It grows readily in our warm and dry climate. When available choose resistant or tolerant varieties. The disease is common in crowded plantings where air circulation is poor and in damp, shaded areas. Avoid overhead irrigation and late summer application of nitrogen fertilizer once symptoms occur. Remove and destroy all infected plant parts (leaves, etc.). Do not compost infected plant debris. Temperatures often are not hot enough to kill the fungus.
Chemicals are most effective when combined with cultural controls.

Idaho Association of Plant Protection 2018 Annual Meeting

All Crops    All Locations

Posted on: September 5, 2018 by Jeff Miller

This is an invitation and call for papers for the 2018 annual meeting of the Idaho Association of Plant Protection in Twin Falls, ID at the Canyon Crest Dining and Event 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 $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.

Hotel reservations must be made on your own.

Please see the attached sheet to submit a topic for presentation.

Psyllid update 31 August 2018

Potato    All Locations

Potato Psyllid

Posted on: August 31, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Owyhee (2 fields), Elmore (1 field), Payette (1 field), Jerome (1 field) Twin Falls (2 fields), and Cassia (1 field).

This week, we collected 34 psyllids from sticky cards (across 13 light sites and 4 intense sites).

We had traps deployed in all 89 of the 89 fields (100%) monitored this year and found psyllids in 17 of the monitored fields (19.1%). Six of the 95 total fields that we were sampling have been vine-killed.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

Unmanned Aerial Vehicle (UAV) field demonstration

All Crops    All Locations

Posted on: August 30, 2018 by Olga Walsh

Date, time: September 13, 2018 9 am – 12 noon

Location: Reggear Tree Farm, 1415 Shortcut Rd, Craigmont, ID 83523

Come learn about how drones can be used in agriculture, crop production, nursery industry and more. University of Idaho specialists will share their latest research and answer questions related to UAVs.

Please forward to those who may be interested.

Thank you to our host: Mr. Bob Reggear!

Organizing committee: Dr. Olga Walsh, Dr. Esmaeil Fallahi, Dr. Sanaz Shafian

This event is funded by: Idaho Department of Agriculture, Idaho Nursery & Landscape Association, University of Idaho Extension, Idaho Agricultural
Experiment Station

Contact information: Olga Walsh, Assistant Professor, Cropping Systems Agronomist, University of Idaho, Parma R&E Center, owalsh@uidaho.edu

Psyllid update 24 August 2018

Potato    All Locations

Potato Psyllid

Posted on: August 24, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Elmore (1 field), Twin Falls (2 fields), and Cassia (1 field).

This week, we collected 30 psyllids from sticky cards (across 9 light sites and 5 intense sites).

We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 14 of the monitored fields (14.7%).

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

Malheur Experiment Station Onion Variety Day August 28

All Crops    All Locations

Posted on: August 21, 2018 by Janet Jones

You are invited to the Malheur Experiment Station Onion Variety Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
in the field off Onion Avenue under the canopy.
Date: Tuesday, August 28, 2018
Registration starts at 9:00am with donuts and refreshments.
A complimentary lunch will be served at noon.

Click on the PDF below for the Flyer.

Please RSVP for lunch or if you need more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.

Sunscald in peppers and tomatoes

Landscape and Garden    Treasure Valley - Idaho

Posted on: August 20, 2018 by Maria Held

Due to high sun exposure on peppers the fruit may develop areas that go from green to yellow and sunken, then become dry and brown. In the case of cucumbers the green bleaches out to white and the tissue becomes soft. Because of extreme temperatures this is occurring more than usual this season. Sufficient leaf cover is the best prevention. Shading the affected plants especially on the west side with shade cloth is helpful.

Psyllid update 17 August 2018

Potato    All Locations

Potato Psyllid

Posted on: August 17, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Payette (1 field), Twin Falls (3 fields), Jerome (1 field), Cassia (1 field), and Bannock (1 field).

This week, we collected 36 psyllids from sticky cards (across 12 light sites and 4 intense sites).

We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 16 of the monitored fields (16.8%). However, we are still waiting to receive card data from 4 sites.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

Ag Talk Tuesday! -- Special presentation on Market outlook and break-even prices, by Ben Eborn, UI

All Crops    All Locations

Posted on: August 10, 2018 by Juliet Marshall

Greetings:
You are invited to join University of Idaho Extension personnel and fellow growers, fieldmen, agronomists, and industry reps to discuss current issues in crop production.

When: August 21, 7AM to 8:30AM
Where: Perkins, Pocatello (1600 Pocatello Creek Rd) - BANQUET ROOM
Topics include:
-- Special presentation on Market outlook and break-even prices, by Ben Eborn, UI Extension Ag Economist
-- Harvest update
-- UI Spore Trap Update

For convenience, selected breakfast options will be available for purchase (optional).

Questions can be directed to one of the Organizers:
Kasia Duellman, U of I Extension Seed Potato Specialist, kduellman@uidaho.edu
Pam Hutchinson, U of I Extension Weed Specialist, phutch@uidaho.edu
Juliet Marshall, U of I Extension Cereals Specialist, jmarshall@uidaho.edu

Please feel free to forward this invitation to your colleagues, and the attached PDF file is available for your convenience to print and display or distribute.

Sincerely,
Kasia

----------------------------------------------------------------------------
Kasia M. Duellman, PhD
Assistant Professor and Extension Seed Potato Specialist
University of Idaho - Idaho Falls REC
1776 Science Center Drive, Suite 205
Idaho Falls, Idaho 83402

Psyllid update 10 August 2018

Potato    All Locations

Potato Psyllid

Posted on: August 10, 2018 by Lucy Standley

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Payette (1 field), Twin Falls (1 field), Jerome (1 field), Cassia (3 fields), Minidoka (1 field), Power (1 field), and Oneida (1 field).

This week, we collected 36 psyllids from sticky cards (across 15 light sites and 4 intense sites).

We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 19 of the monitored fields (20%). However, we are still waiting to receive card data from 3 sites.

This week we also collected one psyllid from vacuum sampling in one Canyon county field.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.

Although psyllid numbers continue to be relatively low thus far this year, we are now starting to see a few more captures in eastern Idaho. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years.

Nevertheless, we urge growers and crop consultants to have an IPM program in place.

“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho

corn earworm counts 8/9/18

Corn    Treasure Valley

corn earworm

Posted on: August 9, 2018 by Jerry Neufeld

The pdf below has the corn earworm adult moth counts from this morning. There does not appear to be many corn earworm moths in the area. However, scout your fields to be sure.

Raspberry Cane Damage

All Crops    All Locations

Rose Stem Girdler

Posted on: August 8, 2018 by Maria Held

Rose Stem Girdler damage has been observed in raspberries. The canes wilt from the top or break at the girdling site. Cut the stem at ground level and destroy infested canes

Coddling Moth (3rd Generation!)

All Crops    All Locations

Posted on: August 8, 2018 by Dian Roberson

Based on Degree Day Models, we will have a third generation of coddling moths this year! Stay vigilant. Practice good sanitation by removing and disposing of young damaged fruit.

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