[Market-farming] Trouble with insect feeding in tunnels

Richard Moyer ramoyer at gmail.com
Tue Jan 8 13:38:49 EST 2013

Robert, Beth and Todd,
It's been 15-20F in my tunnel a couple of nights, by design, to try to kill
off these creatures, or at least induce dormancy.  Takes out some cool
season weeds as well.

One can selectively cover crops within the tunnel (or not), instead of all
or none of such cold treatment.

I've been transplanting winter-hardy lettuces and mustards into the HT,
that I sowed in the field nearby, and have raised under row cover on the
worst nights.  So bringing clean plants in.  But the strawberries in the HT
still provide plenty of habitat.

Robert, would sticky cards or other trapping methods help with ID?  May be
needed to understand their life cycle, then implement effective control.

Which predators are most active in winter tunnels, and how to encourage
them/help them survive, and reproduce as well?

Our spinach in the field (winter-hardy cultivars) has been through multiple
nights in mid-teens with no protection, without apparent injury.  Am
covering some of it now, to increase growth rate after this cold treatment.

In summary, one can populate an (early) winter HT with very cold hardy
crops for winter markets, let Jack Frost wreak havoc on at least some bugs,
then introduce under increased protection the more tender cold crops as
winter moves into spring.

If two HT or other protective structures/methods, can completely open one
up for the Mr. Freeze, Killer Frost, Captain Cold treatment, then
transplant into it.

Good questions!
Richard Moyer
SW VA, where we are forecast a week of temps 20 degrees above normal, both
day and night.  What's that going to do for all these life cycles?

> From: "Robert G. Hadad"
> Greetings,
>     I am trying to see if others have run into problems with insect
> feeding on greens in tunnels during the late season/winter months?
> Specifically, we are are seeing small worm (like very tiny loopers) and
> finding pin-hole feeding damage on spinach. However, not actually seeing
> these insects feeding so it could be something else. Has anyone seen
> feeding like this and actually seen the insects responsible?
> Thanks.
> Robert
> Robert Hadad
> Cornell Vegetable Program
> Fresh Market Specialist
> 4487 Lake Ave.
> Lockport, NY 14094
> rgh26 at cornell.edu
> 585-739-4065
> Message: 2
> Date: Mon, 7 Jan 2013 17:09:40 -0500
> From: "Beth Spaugh" <lists at rhomestead.com>
> Subject: Re: [Market-farming] trouble with insect feeding in tunnels
> To: "'Market Farming'" <market-farming at lists.ibiblio.org>
> Message-ID: <5BC62E091F9D4267A10510098E91FE1E at BethPC>
> Content-Type: text/plain; charset="windows-1255"
> We still have grasshoppers.
> Message: 3
> Date: Mon, 7 Jan 2013 19:30:22 -0500
> From: Todd Lister <toddlister1 at gmail.com>
> I find winter in the hoop houses to be a real battle with the pests. They
> love the protection.  Backpack sprayer is busy in winter.  Every week.
> Todd
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