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Subject: Market Farming
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- From: "Nan Johnson" <nan AT olemiss.edu>
- To: "Market Farming" <market-farming AT lists.ibiblio.org>
- Subject: Re: [Market-farming] Aphid's in strawberries
- Date: Wed, 5 Apr 2006 09:59:23 -0500
Phil.......We have some serious aphid infestation in our greenhouse (all
medicinal plant species, no vegetables). We just ordered ladybugs ( Hippodamia
convergens) from The Green Spot - and they need to be released every 3-4 days
for six times (total of 18-24 days time span). Otherwise, we are told that
they will be ineffective. This involves a total of about 18,000 ladybugs,
so if The Green Spot is correct, I don't know if you could get that many just
going outside one's house.
Under DRAWBACKS, The Green Spot catalog cautions: "First and foremost,
they are flighty. If not released properly, ladybugs can disperse
completely within 24 hours. Even when they are released properly, 90-95%
will bolt anyway; it is expected, it is their nature. We know of this
phenomenon and our release rates take this intot consideration."
You should know that the size of our greenhouse is 30 x 60 with hundreds of
plants, so that is a big area. But not all plants are infested (say about
40). We have been spraying with commercial pyrethrin product and it was
doing an OK job; we just were curious how well the ladybugs would do, since this
is a new greenhouse and haven't tried it in here before.
|
-
[Market-farming] Aphid's in strawberries,
SaladG, 04/05/2006
-
Re: [Market-farming] Aphid's in strawberries,
Bill Shoemaker, 04/05/2006
- Re: [Market-farming] Aphid's in strawberries, Nan Johnson, 04/05/2006
- Re: [Market-farming] Aphid's in strawberries, James H. Corey, 04/05/2006
- <Possible follow-up(s)>
-
Re: [Market-farming] Aphid's in strawberries,
, 04/18/2006
- Re: [Market-farming] Aphid's in strawberries, Andy Hupp, 04/18/2006
- [Market-farming] tomato days to harvest, Beth Spaugh, 04/18/2006
-
Re: [Market-farming] Aphid's in strawberries,
Bill Shoemaker, 04/05/2006
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