March 11, 2019

Insect and disease update for Christmas trees – March 11, 2019

As part of a grant with NY Farm Viability Institute, I am putting insect models based on Growing Degree Days (GDD) into NEWA.  As part of a trial, I am working with growers to see if using GDD helps provide better control with fewer pesticides used.

 

Today’s message:

No accumulated growing degree days yet in NYS, which is why you are all getting the same message!

 

Riverhead is getting close to its first one!  Remember, the average temperature needs to be over 50F and the accumulation started March 1.

 

Here are a few things you can do or get ready:

  1. Get your traps ready
    1. Tedder’s trap for white pine weevil https://ento.psu.edu/extension/christmas-trees/information/whitepinewvtraps.pdf
    2. Doug fir needle midge trap https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/ec1373.pdf
    3. Yellow sticky cards for
  2. Remove or treat stumps and remove cull piles and dying trees before adults emerge (starting about 7 GDD) for Pales weevil and Eastern pine weevil management
  3. Scout – starting with trees that were affected last year
    1. Spruce and rust mites
    2. Cooley spruce gall adelgid nymphs on Douglas fir and spruce
    3. Swiss and Rhabdocline fruiting bodies on Douglas fir needles
    4. Rhizosphaera and spruce needle rust on spruce.

 

Have a great week!

February 5, 2019

Greenhouse IPM update 2.5.19

Ahh, pretend spring!  I’m enjoying every minute!

Botrytis on overwintering crops – it’s a sneaky one.  Yes, it likes temperatures in the 70’s – who doesn’t?  (not much higher, though).  But UC Davis says ‘temperatures near 32 F will retard but not completely stop the development of gray mold.’  High humidity and free water are also necessary for the disease to progress.  So it could be lurking there waiting for a chance to sneak out.  So keep an eye on the overwintered stock, keep relative humidity below 75%, and keep the air circulating!

UMD Extension suggests starting ornamental pepper plants now if you want them as banker plants for Orius in March or when the day length is long enough in your area – about 12 hours of light.  They need to be flowering when you apply the Orius so they can feed on the pollen.

Couldn’t get to Maine, New Hampshire or Vermont for their terrific 2019 IPM Workshops? (you really should go some year) You can get the materials presented on-line at https://www.uvm.edu/~entlab/Greenhouse%20IPM/Workshops/2019/IPMWorkshop2019.html  It’s going to get cold again so you’ll need something to read….

January 18, 2019

Greenhouse IPM update 1.18.19

Things to consider while you are waiting for the snow to start!

If you bring in plant material from Florida – or anywhere really – you should look it over closely to make sure that you are not bringing in any pest insects.  A new aphid has been found in Florida on aluminum plant that can also affect other Pilea spp – the Pilea aphid.  It is very small and bicolored in the adult stage.  More information here:

Yet another invasive species – the spotted lanternfly – is definitely on the move.  Several adults have been found in NYS – including on nursery stock – but so far – and thanks to good inspection – no populations have been found.  To learn how to identify it and prevent its spread, watch our webinars (in conjunction with NE IPM and the Department of Ag and Markets.

  • Spotted Lanternfly Basics for Hops, Berry, and Vegetable Growers (Feb. 26, 2019, 10:00 a.m.)
  • Spotted Lanternfly Basics for Grape and Apple Industries (Feb. 26, 2019, 1:00 p.m.)
  • Spotted Lanternfly Basics for Christmas Tree Growers (Mar. 4, 2019, 10:00 a.m.)
  • Spotted Lanternfly Basics for Nursery, Greenhouse, and Landscape Industries (Mar. 4, 2019, 1:00 p.m.)

For more information and registration links, go here:

Looking for the Ornamental Team?  We try to keep our events listing updated here

January 2, 2019

Greenhouse IPM update 1.2.19 When is Sevin not Sevin?

I thought this was an interesting post.

 

Betsy

Pesticide use is becoming even more complicated.  Note that Sevin no longer contains carbaryl.  This article from Texas A&M AgriLife Extension explains the situation.

I photographed the previous and new product bottles and labels.  The bottle on the left is the previous product that contains carbaryl (100 on label) and the one on the right is the new product (500 on label).  These are completely different active ingredients, both called Sevin.

Please remind your clientele to “Read the Label” when using pesticides!

 

Thanks

 

Dr. Norman C. Leppla, BCE

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December 21, 2018

Christmas tree IPM update 12.21.18

Sounds like it has been a good year for most (at least those people who have told me) so I hope everyone is basking in that glow – or will be as soon as they can close!

 

Just to get you ready for January…. In addition to the CTFANY meetings all over the state (dates and locations below – more information soon), Michigan State is sponsoring a series of webinars on ‘What’s New in Christmas Tree Production’

 

January 30         Effective Nitrogen Use

February 6        Quarantine Pest Issues – Elongated hemlock scale and spotted lanternfly                     

February 13      Evaluating the performance of Turkish and Trojan Fir (CoFirGE)                   

February 20      Reducing coning in Fraser fir

February 27     Choosing Cover Crops    

 

CTFANY meetings  

Jan 17    Syracuse

Jan 24   RiverheadJan 30               Hudson Falls

Jan 31   Millbrook

Feb 7     Hammondsport

Feb 13   Batavia

Have a restful holiday