WSU CAHNRS

Mount Vernon Northwestern Washington Research and Extension Center

Small Fruit Horticulture Research & Extension Program

Small Fruit Research and Outreach Blog

March 24, 2017

The Whatcom Ag Monthly published the following article on soil fumigation alternatives in red raspberry this week.  With the loss of broadcast applications of Telone C-35 in red raspberry systems in Washington, this article may be of particular interest to growers:

Evaluating Soil Fumigation Alternatives in Washington Raspberry Fields

 

March 23, 2017

Today is the day of the 2017 Western Washington Berry Workshop.  Today I am also announcing the Small Fruit Food Safety Workshop – Managing from Field to Market.  This event will occur on April 20, 2017.  The event will be held in Prosser, WA, with broadcasting to Lynden and Mount Vernon.  Further information and registration can be done at: http://bpt.me/2908400

 

 

 

 

 

 

 

 

 

 

March 22, 2017

One more reminder for the 2017 Western Washington Berry Workshop to be held Thursday, March 23. The cost is $15 and includes lunch.  Presentations will be made by speakers at the Northwestern Washington Research and Extension Center in Mount Vernon, with remote sites available in Whatcom, Lewis, and Clark counties (lunch provided at remote sites, as well). To sign up and view the agenda, please go to:

Skagit Workshop
WSU NWREC
16650 SR 536
Mount Vernon, WA
Register HereFor more info:
Don McMoran
360-428-4270 ext 225
dmcmoran@wsu.edu
Clark County Workshop
American Legion Hall
4604 NE St James Rd
Vancouver, WA  98663
Register HereFor more info:
Erika Johnson
360-397-6060 ext 5738
erika.johnson@clark.wa.gov
Whatcom Workshop
NWWF, Rotary Building
1775 Front Street
Lynden, WA
Register HereFor more info:
Chris Benedict
360-778-5809
chrisbenedict@wsu.edu
Lewis County Workshop
351 NW North Street
Chehalis, WA
Register HereFor more info:
Sheila Gray
360-740-1214
sgray@wsu.edu

 

 

March 20, 2017

This posting comes from Knoxville, Tennessee.  I am attending an annual project meeting for a national biodegradable mulch research and extension project in the capacity of a project advisor.  This meeting is a great example of transdisciplinary collaboration and where there is good communication between researchers and industry members, particularly mulch manufacturers.

The application of biodegradable mulches in small fruit production systems is one area of interest in my own research and outreach program, which readers will hear more about as time and this blog evolves.  For now and for those interested in learning more about biodegradable mulches, I encourage you to visit the project’s website.  Of use for growers is the list of biodegradable mulch projects that are commercially available.  It is worthwhile to note that there are many different mulch products, each formulated differently and with varying thickness.  These differences will impact functionality and performance in the field.  If you are interested in using these products and learning more, please visit the website below and/or reach out to me; I will be happy to help pull together resources and information to help guide your decision.

https://www.biodegradablemulch.org/ 

Knoxville, TN biodegradable mulch field study site.

Developing techniques to measure in-soil mulch biodegradation in the field.

 

 

 

 

 

 

 

 

 

 

March 18, 2017

This specimen was submitted to me yesterday, March 18.  It was collected in Sumas and appears to be the first brown marmorated stink bug (Halyomorpha halys; BMSB) found in Whatcom County.  First evaluation by WSU entomologist, Dr. Bev Gerdeman, positively identified this specimen as BMSB.  BMSB has been found in BC and Oregon, as well as other counties in Washington.  There is concern about the impact this insect can have on small fruits, but time and research will tell.

 

 

 

 

 

 

 

 

March 17, 2017

Our lab is halfway through evaluating and scoring blueberry buds from this week’s cold hardiness assay done on samples collected in Skagit County.  We evaluate damage by dissecting the three uppermost flower buds on six shoots per cultivar and temperature treatment under a microscope.  We then count the number of dead versus living flowers within each bud  (we also evaluate for damage at the vascular connection between the flower bud and shoot).  This week, we are seeing 100% of buds with damage in both ‘Duke’ and ‘Draper’ at -16 C (3.2 F).  We’re seeing less damage at -15 and -14 C (5 and 6.8 F, respectively).  Hardiness is decreasing fast relative to our previous assays in Skagit and is decreasing due to warmer temperatures and wet conditions. Despite this, I don’t see any immediate cause for concern at this point in time and with forecasted temperatures.  Another summary from this week’s assay will be posted next week.

‘Duke’ and ‘Draper’ blueberry samples ready to be loaded in the glycol bath for a cold hardiness assay.

‘Draper’ bud with damaged flowers (sample collected Feb. 1, 2016).

 

 

 

8:00 – Registration
8:15 – Opening Remarks, Don McMoran

Above Ground Diseases
8:30 am – Mummy Berry Biology, Dalphy Harteveld
9:10 am – Botrytis Resistance, Tobin Peever
9:50 am – Break
10:05 am – Disease Management, Tom Walters

Below Ground Diseases
10:45 am – Pre-plant to replant: Improving Management of Root Lesion Nematodes in Red Raspberry, Lisa DeVetter and Inga Zasada
11:45 am – Screening Phytophthora rubi for Fungicide Resistance, Jerry Weiland
12:15 pm – Lunch

Nutrient Management
1:00 pm – Nutrient Management Update for Blueberry and Raspberry, Lisa DeVetter
1:45 pm – Post-Harvest Nitrogen Test, Aime Messiga
2:30 pm – Meeting Food Safety Modernization Act (FSMA) Standards, Barbara Fick
3:15 pm – Evaluation
3:30 pm Adjourn

Skagit Workshop
WSU NWREC
16650 SR 536
Mount Vernon, WA
Register HereFor more info:
Don McMoran
360-428-4270 ext 225
dmcmoran@wsu.edu
Clark County Workshop
American Legion Hall
4604 NE St James Rd
Vancouver, WA  98663
Register HereFor more info:
Erika Johnson
360-397-6060 ext 5738
erika.johnson@clark.wa.gov
Whatcom Workshop
NWWF, Rotary Building
1775 Front Street
Lynden, WA
Register HereFor more info:
Chris Benedict
360-778-5809
chrisbenedict@wsu.edu
Lewis County Workshop
351 NW North Street
Chehalis, WA
Register HereFor more info:
Sheila Gray
360-740-1214
sgray@wsu.edu

 

March 15, 2017

Due to the shortage of Telone (specifically 1,3-dichloropropene; 1,3-D), Trident Ag. has decided to stop broadcast applications of Telone and only apply it via bed fumigation in raspberry. This leaves some growers questioning how to move forward with their soilborne disease management plans, as many growers relied on broadcast applications of Telone. I thought this would be a good opportunity to highlight the following research by Drs. Tom Walters and Inga Zasada. They have studied bed fumigation, as well as compared broadcast applications of Telone C-35 to Vapam and Dominus. Please read more at the following link below. In short, bed fumigation is a good tool for root lesion nematode management and reduces buffers. However, for those that elect to not bed fumigate, broadcast applications of Vapam and Dominus have been promising in sandy loam soils, where nematodes tend to reside shallower in the soil profile.

UPDATE ON DOMINUS®, VAPAM®, AND BED FUMIGATION TRIALS

 

March 14, 2017

Welcome the the Small Fruit Horticulture research blog.  The purpose of this blog is to share information about small fruit horticulture, as well as to provide regular updates on activities being conducted by the small fruit horticulture program led by Dr. DeVetter.

Today, I’ll start by summarizing development.  Development still continues slowly in both raspberries and blueberries and it’s been wet on both sides of the mountains.  My estimates are that we are 2-3 weeks behind development relative to last year, depending on the location. Cold hardiness in blueberry (‘Duke’ and ‘Draper’) has decreased rapidly these past 2-3 weeks based on our assays in Mount Vernon, but there is no immediate cause for alarm as I don’t foresee temperatures reaching the point where we start to see damage in our experiments.

Seems like a lot of growers are waiting for a break in weather to work their fields and/or fixing irrigation systems as weather permits. Field activity is low for those that have gotten their pruning done. My research program has also been waiting for a break in the weather to start spring soil sampling and establishing 2017 field experiments (more on that later).

We started this morning collecting ‘Duke’ and ‘Draper’ stem samples in Skagit County for our cold hardiness assay today. The pictures below demonstrate the developmental stage and how wet some of our fields are right now.

‘Duke’ samples collected on March 14, 2017, in Skagit County, WA.

Blueberry fields are wet! Growers and researchers alike are waiting for a break in the weather.

‘Draper’ samples collected on March 14, 2017, in Skagit County, WA.

 

 

 

Small Fruit Horticulture Research & Extension Program , WSU Mount Vernon NWREC, 16650 State Route 536, Mount Vernon, WA 98273-4768 USA, 360-848-6120, FAX 360-848-6159
© 2017 Washington State University | Accessibility | Policies | Copyright | Log in