scale ID pic?

[macrocarpa]

any idea what kind of scale this is on dogwoods? there is sooty mold/honeydew all over the branches which I guess makes it a kind of soft scale (armoured scale dont produce honeydew?)

I cant do a spray in this location so i'm looking into imidacloprid or safari. safari would probably work better, but $$$$$$. Any advise for a systemic that will give great results?

http://www.flickr.com/photos/53981946@N04/6947054097/

 

[Knowledgequest]

Imidacloprid is only labeled for hard scale suppression.
Safari has more solubility making it the better systemic weapon. Dynotefuran is labeled for hard and soft scales.

 

[macrocarpa]

I have been told that imidacloprid will work for soft scales, but your right that it is just labeled for suppression.

I'll go with dino, but I cant wait for the generics to come out for this stuff. Crazy expensive!

 

[guymayor]

soft scale, resembles "obscure" scale but those are round.

dormant oil can be brushed on; if spraying of mere oil is verboten

If imid is labeled for suppression, why can it not be used, whether there are zero or 1 or 1000 already on there?

 

[Knowledgequest]

[ QUOTE ]

If imid is labeled for suppression, why can it not be used, whether there are zero or 1 or 1000 already on there?

[/ QUOTE ]

Once Diaspididae are sessile on the plant their feeding stylus is not plugged into conductive tissue like their softer counterpart but rather feed from individual subcuticular cells. Since Imidacloprid has been shown to have a very limited ability to escape the phloem and xylem then insects feeding outside this conductive tissue are unaffected.

Thats why it's imperative to identify the scale family to avoid a pointless application of the wrong chemical.

 

[rfwoodvt]

systemic imid from mauget will work for soft scales. But as Ed points out they have to be "plugged in" and feeding.

When I used it on Magnolia scale the label said the best timing as the end of August-through Sept. You will need to find out what is best for your critter.


Since the Mauget product is direct inject systemic it has a pretty long persistence within the plant and none of the worries inherent to drench or spray applications.

I'd suggest if the plant is not too large then perform a manual removal of what scale you can followed by a proper oil or soap applied consistent with labeling. You can then followup with a systemic Imid or similar product if necessary.