Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).

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Juvenile and adult Bemisia whitefly (Bemisia tabaci).  There are 2 biotypes of this pest (“B” and “Q”) which look identical; however, their response to chemicals is very different.

Poinsettias cuttings are here! Unfortunately, they will likely arrive with unwanted “presents” in tow.  This includes Bemisia whitefly, a pest that can be hard to control with natural enemies and can ALSO be resistant to pesticides.  So what’s a grower to do?  

By implementing some preventative measures RIGHT NOW, and understanding WHEN it’s appropriate to spray, you can help save yourself a lot of headaches later.

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Posted in Bemisia whitefly, biological control, dipping cuttings, imported cuttings, Pest control strategies, Poinsettia, Preventative treatments, Registered pesticides, Whitefly | Tagged , , , , , , , , | 3 Comments

Register for Grower Day 2017 – June 21st!

Greenhouse Canada’s Greenhouse Grower Day is just over a week away! The 2017 event will be hosted at the Holiday Inn and Suites in St. Catharines, Ontario on Wednesday June 21st from 8:30am to 3:30 pm.
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The “Seven Habits of Successful Growers” theme will tackle a variety of topics, ranging from crop lighting and water treatment, to labour management and automation. Other talks will look at the ingredients of a successful family business, the importance of long-range planning, and the keys to marketing to millenials.  There will be lots of networking time and opportunity to talk to vendors too.

Pre-registration is encouraged to avoid lineups at the door. (But walk-ins are always welcome!)

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REMINDER! Tomorrow is the last day to register for the Grower Session of IOBC

Interested in seeing the latest IPM research from around the world and having your voice heard on important research topics? Then come network with the nerds on June 7th!

There will NOT be registration at the door so please register by 5pm TOMORROW at http://iobccanada2017.ca/product/grower-day/ . Only a $25 cost and lunch is provided.

NOTE: Lunch will be served at 1pm (not 12:30 as indicated on the flyer).

Grower Day Ad - May 30 deadline

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New Floriculture Course Offerings from MSU

Thinking about taking a course this summer?  Our friends at Michigan State University are offering three online courses this summer, and all three look to be great resources. You get three months to complete the course at your own pace, from June 1st to August 31st.  The courses are good for new growers or as a staff refresher.   Continue reading

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Talk to the world’s leading greenhouse IPM researchers on June 7th!

Have pressing pest management questions you can’t get answered?  Looking to see what new strategies are coming down the IPM pipeline?   Then come to the Grower Session of the IOBC Canada 2017 meeting and network with world leaders in the field of Greenhouse IPM.   It’s only the second time this event has been held in Canada so this opportunity may be once in a lifetime.  Only $25 to register (due May 30th).  Read on for the details. Continue reading

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Lassoing Loopers: why you NEED to care about caterpillar control

tomato looper 2_Steve hatch

Know which looper species this is? Are you SURE? If not, keep reading, as some species could get your shipments detained at the border.  Photo: Steve Hatch, Bugwood.org.

With spring crops behind us and summer approaching, most of you are probably concentrating on the Big 3: thrips, aphids and whitefly.  But recent alerts put out by the United States Department of Agriculture (USDA), bring a new emphasis to caterpillar control.  Read on to understand what’s happening, how to control occasional pests like cabbage looper, and avoid potential issues at the border.

 

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Botrytis Bumming You Out?

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Botrytis spots on Primula petals.

With the intense period of rain we just had, and with MORE rain coming on Friday, it’s time to think about Botrytis control and prevention.  One of the most common and destructive diseases of greenhouse crops, outbreaks usually follow periods of cool, damp, cloudy weather.  Unfortunately, I can’t order up more sun for you, but I CAN suggest some management tactics.

 

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Posted in Botrytis, diseases, Fungal diseases, Fungicides, Greenhouse Environment, Sanitation, Ventilation | Tagged , , , , , | Leave a comment