June 23, 2017

Howard Schwartz – Colorado State Commentary – Onion ipmPIPE

onion 2
STATE COMMENTARY
October 8, 2012 by hschwartz
Colorado Commentary (10-08-12)  COLORADO Onion harvest of transplanted onions (during August to September) and seeded onions (during September to October) resulted generally in average to above average yields due to light to moderate pest and disease pressure throughout the state.  High temperature and low moisture stress did contribute to higher incidences of Pink Root and Fusarium basal rot in fields of susceptible varieties, but bacterial and fungal disease pressure was light; followed by low to moderate pressure from IYSV in some fields.  Storage rot should not be an issue for the high quality bulbs that are going to storage and market.

Lindsey du Toit – WA State Commentary – Onion ipmPIPE

onion_flowers

2012 WA Commentary 9-7-2012

WASHINGTON and OREGON Columbia Basin Onion Commentary

Onion Crop Growth Stage and Status Last Modified: 09/07/12

Many onion bulbs crops in the Columbia Basin are being undercut, windrowed, and harvested.

Later maturing crops will be harvested in late September-early October. Sentinel Plots in the

south Basin have either been harvested or undercut. Sentinel Plots in the north Basin are all at

tops down and close to undercutting.

 

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 09/07/12

Weather has been seasonally warm and dry in late August-early September.

Central Washington temperature outlook (2-4 weeks): average to 30% above average*

Central Washington precipitation outlook (2-4 weeks): 40% below average*

* Courtesy of Planalytics, Inc. (http://apps.planalytics.com/aginsights/pipeweather.jsp)

 

Insect Scouting, Outlook and Management Last Modified: 09/07/12

Thrips: Thrips numbers in Sentinel Plots were not counted as plots have been harvested or

undercut, or will soon be undercut.

 

No other insect problems to report as the SPs have been harvested or are undercut or ready for

undercutting.

 

Disease Scouting, Outlook and Management Last Modified: 09/07/12

No further disease reports for the Sentinel Plots as the SPs have been harvested or are undercut

or ready for undercutting.

 

No disease reports from growers over the last two weeks, as harvest operations are in full swing

on most farms.

 

Onion Specialist (submitted on behalf of WA/north-central OR onion participants)

Lindsey du Toit

Associate Professor of Plant Pathology, Washington State University,

Email: dutoit@wsu.edu, 360-848-6140

 

Chris Cramer – New Mexico State Commentary – Onion ipmPIPE

yellowonion

2012NewMexicoCommentary (07-13-12)

New Mexico Commentary

Onion Crop Growth Stage and Status Last Modified: 07/13/12
The harvest of the spring-sown crop has begun. Yields and quality should be good as
environmental conditions have been ideal. Some delays in harvest may occur due to wet fields.
Market prices have increased due to reduced supply. Two sentinel plots have been harvested and
it is anticipated that the remaining two plots will be harvested by the next report.

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 07/13/12
Summer monsoon conditions have arrived since the last report. Daily maximum temperatures
have decreased since the last report. Morning and afternoon rain showers have occurred in most
production areas. This rainfall may have resulted in some wet fields and a delay in harvest
depending upon the location. Since the start of the month, rainfall totals have averaged 1-2”
depending upon location.
Temperature Outlook* [2 – 4 weeks]: Normal
Precipitation Outlook* [2 – 4 weeks]: Normal
*Courtesy of Planalytics, Inc.

Insect Scouting, Outlook and Management Last Modified: 07/13/12

Thrips
Thrips numbers (adult and juvenile) range from 0 to 48 per plant with an average of 4-6
depending upon sentinel plot. Growers have done an excellent job at controlling thrips
populations.

Other
No surveys or reports at this time

Disease Scouting, Outlook and Management Last Modified: 07/13/12

Iris yellow spot virus
No reports at this time

Soil-borne Diseases (Damping Off, Pink Root, Fusarium)
No surveys or reports at this time

Fungal Diseases (purple blotch, downy mildew, Botrytis)
No surveys or reports at this time

Bacterial Diseases (Xanthomonas, center rot, soft rots)
No surveys or reports at this time

State Contact for Project
Chris Cramer
Professor of New Mexico State University
New Mexico State University
Email:cscramer@nmsu.edu
Collaborators: Mark Uchanski, Mike Petersen

Lindsey du Toit – Washington State Commentary – Onion ipmPIPE

onion_flowers

2012 WA Commentary 7-13-2012

 

WASHINGTON and OREGON Columbia Basin Onion Commentary

 

Onion Crop Growth Stage and Status Last Modified: 07/13/12

Overwintered onion crops in the south Columbia Basin are still being harvested. Spring planted onion bulb crops look good overall. Crops are at stages 5-7 in the south Columbia Basin, and 5-6 in the north Columbia Basin in the Sentinel Plots. The crop looks good overall. If thrips numbers continue to go down in the south Basin, that will be good news, but we may not be out of the woods yet for thrips problems.

 

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 07/13/12

June in central WA turned out to be even cooler than in 2011, surprisingly, with unusually high precipitation and even hail. Early July turned hot and dry.

Central Washington temperature outlook (2-4 weeks): normal to 30% above average*

Central Washington precipitation outlook (2-4 weeks): normal*

* Courtesy of Planalytics, Inc. (http://apps.planalytics.com)

 

Insect Scouting, Outlook and Management Last Modified: 07/13/12

Thrips

Thrips numbers have actually gone down a bit in parts of central WA. Onion plants may be sending more resources to the bulb, and leaf growth is slowed, which seems to naturally decrease or reduce thrips fecundity.

Thrips numbers in the north Columbia Basin are either similar or greater than two weeks ago (8 to 40 thrips/plant).

Maggots

No maggot damage to report this time of year.

 

Other

Some leaf miners and a few aphids were detected in one of the Sentinel Plots in the south Basin.

 

Disease Scouting, Outlook and Management Last Modified: 07/13/12

Iris yellow spot virus

Nothing significant to report. No symptoms in Sentinel Plots.

Soil-borne Diseases (damping-off, pink root, Fusarium, Rhizoctonia)

Some severe patches of stunted plants observed from Rhizoctonia infection in bulb crops on sandy fields in the north Basin, planted in rotation with overwintering cereal cover crops that were killed with herbicides at the time of planting onion seed. No patches in Sentinel Plots.

 

Fungal Diseases (purple blotch, downy mildew, Botrytis)

Additional pink root samples observed in some fields in the north Columbia Basin, particularly some fields rotated regularly with sweet corn and onion.

 

Bacterial Diseases (Xanthomonas, center rot, soft rots)

Soft rot observed at a low incidence in a bulb crop under center pivot irrigation (5/1,000 plants examined), but not in the Sentinel Plots.

 


Onion Specialist (submitted on behalf of WA/north-central OR onion participants)

Lindsey du Toit
Associate Professor of Plant Pathology, Washington State University,

Email: dutoit@wsu.edu, 360-848-6140