April 6, 2016

Greenhouse IPM update 4.6.16

A lovely tour of Rochester greenhouses last week.  I think I was having a color deficit reaction.  Need More Flowers!

It’s all in the tank! How do beneficial nematodes get along with pesticides as a tank mix?  Sarah Jandricic checked it out.

Beating botrytis – yes, it is that time of year.
The temperature and humidity range information is very helpful!

Keeping up with calibration – for EC and pH meters.  Note that not all are constructed the same way – but the basic information is a good reminder.  In fact, I need to calibrate mine today!

Need more encouragement to scout? And even more?

Do plants need sunscreen – when you use UV light to kill fungal diseases?

Grown in the USA – more beneficials are available from Beneficial Insectary in CA.

A little light reading – if you can find the time now.  The presentations from the 2015 Canadian Greenhouse Conference. My favorite slide title – The bios are @#&%$ !!! A checklist before complaining to your supplier.

Margery says she always reads these in case I mention her.  Maybe I should start adding other people’s names, too.

Have a great week!

March 23, 2016

Greenhouse IPM Update 3.23.16

I just figured out how to hyperlink in my emails.  I’m quite the dinosaur!  Click on the blue words to get the link if you are a dinosaur like me.  Let me know if it doesn’t work for you!

It’s a rove beetle eat predacious mite world out there.  Great information from Sarah Jandricic (OMAFRA) on how to keep your thrips beneficials from eating each other!

A little early nursery scouting might be in order – things they are already seeing in Ontario – Bagworms, Viburnum leaf beetle egg masses, and gypsy moth egg masses.

Lots of information from Tina Smith at UMass and Leanne Pundt at UConn
Keeping an eye on those calis. Calibrachoa troubleshooting for diseases and disorders

Tackling thrips with bios and pesticides (remember to check for NYS labels on any pesticides)  Lots of other resources linked to this report.

Be nice to your nematodes.   This article makes the point about not storing nematodes in a refrigerator that is opened frequently.  Another temperature shock could be mixing chilled nematodes with too warm water.  Not sure we have the research on this yet, but it makes sense.

What are those strange lumps?  It could be crown gall – found on some lobelias this spring. It is caused by a bacterium and can be spread by water splashing, although it needs an entry point to get into the plant.  No good control so add it to your scouting list.

Do you have a pH and/or EC (electrical conductivity) meter stashed in your greenhouse that you last used last season?  It probably needs to be recalibrated.  Have you ever done that?  Here’s how!

And to go along with that – a short webinar on Diagnosing low substrate pH problems from Brian Whipker at NC State on Friday March 25.

To keep Margery happy – lovely photos of Thielaviopsis – and how to avoid having your own.

Where have all the archived updates gone?  Well, NYS IPM is in the process of getting a new website and we consolidated all the updates into one blog to archive them  Coming soon!

’Tis the season for greenhouse information!  From my email to yours.  Have a good week!