Picus

[Lee Winger]

A few months back [before the credit crunch, ie my developer clients tightening there purse strings] I was intending on buying a Picus..

 

Having recently spoken to a few bods in the know they say the Picus can give very inaccurate readings, does anyone have any experience of this?

[Steve Bullman]

i've felled a number of trees where the decay wasnt as bad as what the picus had read, but it was there all the same.

[Lee Winger]

I'd like to do a Picus v Resistograph experiment

[kevwrenn]

we have one at work, only used it a couple of times but it seemed fairly good to me! both times resulted in fells, rot was there, only hicup we had was when some very thick bark had lifted slightly.. tree wasnt good anyway so no problem there. not heard of any issues with it.

[Colin Bashford]

Lee

CBATrees use both Resistograph and Picus as necessary, following extensive VTA. We find that Picus tomography when interpreted correctly is very accurate based on comparisons with actual presence of decay when tree felled. We test at three heights in the area of suspected decay to provide 3D information of the cone of decay that might be present.

IMHO best way to demonstrate extent of decay to third parties and we use it as often to provide evidence to retain a tree as to felling one.

[David Humphries]

and we use it as often to provide evidence to retain a tree as to felling one.

 

Very encouraging to hear this Mr B,

Do your operatives have access to the lite version for aerial inspection?

If so, any observations?

 

 

Thanks

 

David

 

 

 

.

[Amelanchier]

We have the PICUS Lite and its not light! its exactly the same at the full fat version with a big suitcase full of wires.

 

As for accuracy, I think Dirty Harry said it best... "A man's got to know his limitations."

[Colin Bashford]

We have the PICUS Lite and its not light! its exactly the same at the full fat version with a big suitcase full of wires.

 

As for accuracy, I think Dirty Harry said it best... "A man's got to know his limitations."

 

I agree the Lite is not light! However we can use as many sensors as are needed as long as they are 15cms? apart.

[David Humphries]

We carried out a demo today, on an Fraxinus with Inonotus hispidus.

Test height @ 4m, which was below the occluded wound on the rhs of the first picture.

 

The disfunctional portion of the trunk is clearly shown between points 9 and 10 on the diagram, which are the two sensors in the middle of the second picture.

 

Tomograph; courtesy of Ian Isaacs from Sorbus International limited.

[MasterBlaster]

Wow, that's a cool gizmo. How much does it cost and how much do you charge?