Aphids

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Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15
Aphids

In the garden I have few problems with aphids, they are controlled by many different predators.

However when I bring plants under glass in the the fall the aphid population increase dramatically but there is no sign of the predators. Especially soft bodied young plants and seedlings are affected. I am afraid of using insecticides too much as some can damage the plants. I mostly use my fingers to squeeze the culprits but this is a tedious and tiresome task.

What do you do to keep aphids under control?

Weiser
Title: Member
Joined: 2009-12-04

Ho
Have you ever tried a systemic insecticide?  I have used them many times on soft tender cacti seedlings to control mealy bugs I have never experienced damage. I guess that is all I can recommend.

From the High Desert Steppe
of the Great Basin and the Eastern
Escarpment of the Sierra Nevada Range
Located in Reno/Sparks,NV  zone 6-7
http://www.flickr.com/photos/sierrarainshadow/
John P Weiser

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

Weiser wrote:

Ho
Have you ever tried a systemic insecticide?  I have used them many times on soft tender cacti seedlings to control mealy bugs I have never experienced damage. I guess that is all I can recommend.

yes in fact I have! And once a lot of the seedlings wilted and died. I do think it was due to the systemic insecticide. However, I will try again, this fall the aphids have been a pest and some of the smaller plants succumb.

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

Weiser
Title: Member
Joined: 2009-12-04

Wow. I never had that happen. Sorry to hear it.
I did find this--Biorational Pesticides Strains of the fungus Beauveria bassiana provide good control of aphids, including green peach aphids. The fungus works by attaching to the outside of the pest, then penetrating into the body and killing it. The fungus is available commercially for greenhouse ornamentals  and for vegetables. 

From the High Desert Steppe
of the Great Basin and the Eastern
Escarpment of the Sierra Nevada Range
Located in Reno/Sparks,NV  zone 6-7
http://www.flickr.com/photos/sierrarainshadow/
John P Weiser

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

Weiser wrote:

Wow. I never had that happen. Sorry to hear it.
I did find this--Biorational Pesticides Strains of the fungus Beauveria bassiana provide good control of aphids, including green peach aphids. The fungus works by attaching to the outside of the pest, then penetrating into the body and killing it. The fungus is available commercially for greenhouse ornamentals  and for vegetables. 

Thanks, a good idea but I don't know if this fungus is available in Norway but I'll look for it.

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

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