Chorophyll absorbing Glasses

[Smallaxe]

Obviously, the sunglasses do not absorb chlorophyll, as much as, it absorbs the green light, that gives plants that healthy look. So when you put the glasses on, healthy plants are blocked out and appear black to you.
They say that by highlighting, the yellows, reds, and blues, we can see early warning signs of a potential problem. Therefore, you should, be able to take steps early, in correcting the environmental circumstance causing the problem.

My particular interest, is in the watering/drying cycle to promote soil structure and healthy, aerobic growth, of both the microbes and the plants. I was hoping they might signal water stress, for me, so that I could let the ground dry out - more - before turning on the irrigation.
Typically we don't need water on our rural lawns until July/August, and quite often - never; and I would like to move some of my clients, in that direction.

Has anyone ever used them, to signal plant stress, related to drought?

[JDUtah]

Interesting. I have never heard of them before.

http://apcomp.net/fs/stresssum1.html

[Landscape Poet]

I have seen these type glasses in a few different sales venues. I just figured it was a scam. If anyone would purchase them, feel that they work and post results on here I may reconsider.

[RigglePLC]

Interesting concept Ax. I have seen them--they are purple, right? So grass that is healthy appears black and dry or diseased grass appears yellow..or what. Could you spot grub infestations? Other insects (like chinchbugs)? The probably make pretty good sunglasses, too. Very stylish. Get some and let us know how they work. Or if anybody else knows...or has experience...

Or maybe use an infra-red camera at night...?

[Kiril]

Obviously, the sunglasses do not absorb chlorophyll, as much as, it absorbs the green light, that gives plants that healthy look. So when you put the glasses on, healthy plants are blocked out and appear black to you.
They say that by highlighting, the yellows, reds, and blues, we can see early warning signs of a potential problem. Therefore, you should, be able to take steps early, in correcting the environmental circumstance causing the problem.

My particular interest, is in the watering/drying cycle to promote soil structure and healthy, aerobic growth, of both the microbes and the plants. I was hoping they might signal water stress, for me, so that I could let the ground dry out - more - before turning on the irrigation.
Typically we don't need water on our rural lawns until July/August, and quite often - never; and I would like to move some of my clients, in that direction.

Has anyone ever used them, to signal plant stress, related to drought?

Axe,

This is not a new concept by any means, and in all honesty, the glasses ain't gonna give you much actionable information at all.

[NattyLawn]

For $15.50 someone should get them.

http://www.benmeadows.com/store/Grounds_Maintenance/Horticulture/Plant_Stress_Detection/22249/146998/?CID=9OP001

[Smallaxe]

I did get them, and all I have to work with so far, is my window box. Of course, winter pine trees also have, 'active' chorophyll. I found some white pines in valleys that showed very dark, while most of them, showed yellowish, on our frozen, sandy hills.

My charcoal based, potting soil, containing impatience and a hydrangea, show up black. The poinsettia, shows lots of yellow, along with, the geranium. The orchids, just show a dark green.

These glasses are mainly used by foresters, and they seem to take them seriously.
I don't know, what the glasses will show, with drought conditions. or how it would compare with, infrared.
$15.50?? I should have kept looking. I paid $25.00. :) But I'm glad I did.
There is a 'theater lighting' filter, that does the same thing. These are little sheets, of all different color effects, that can be purchased quite cheaply. So it is not a super-duper promise, of the magical solution - scam, as much, as a simple tool. :)
JMO.

[phasthound]

I had a pair, but scratched them badly in no time.
For the money, they are another tool that can be useful.
The best thing to do is to make notes on what you see visually
compared to an in depth physical inspection. Then see if you are able to make
educated relationships.

[phasthound]

Axe,

This is not a new concept by any means, and in all honesty, the glasses ain't gonna give you much actionable information at all.

Do you have any studies to prove this statement?
Sorry, I'm just being an ass. :)

[JDUtah]

Sorry, I'm just being an ass. :)

lol I love it! :clapping::clapping::clapping::clapping:

[Smallaxe]

... The best thing to do is to make notes on what you see visually
compared to an in depth physical inspection. Then see if you are able to make
educated relationships.

That was a comment, from the 'Foresters', that used them.
"It takes -time - to know, what you are looking at, or looking for..."

So :
"A scam", involving a self fulfilling prophecy??? - or - does it really show useful information?

I would appreciate the input of any LCO, that has a comment, based on experience...
Whatever, I learn from the photospectrum, of turf, would be more valuable, in the long run... Right?!!!?
Sales pitches are - trite and foolish... correct?... I'm curiious about what is learned... :)

[davidris]

I have been wearing glasses with orange lenses for years to see plants in stress. Only one type of orange will work and evertime I find a new pair I buy them in bulk. This color is not easy to find. The lenses lower the blue wavelength so that anything green shows up very bright and intense green. There is less chloroplasts in stressed plants leaves so they show up lighter. The last pair I found was at walmart and are safety glasses/sunglasses.

I can see localized dry spots form before clients notice. I put them up there with my shovel on needed tools. Amazing tool

We will be using the glasses you guys are talking about in one of my classes so i will post back about those.

[ICT Bill]

what other simple tools are out there, what about Brix testing grass, anyone do that?

[Kiril]

Do you have any studies to prove this statement?
Sorry, I'm just being an ass. :)

http://www.clas.ufl.edu/lueci/southworth/RS-class-advanced/Discussion-readings/ElmoreEtAl-SMASemiArid.pdf

http://www.scipub.org/fulltext/AJAB/AJAB43187-191.pdf

http://www.met.fsu.edu/people/nicholson/papers/relation93.pdf

Got more if you want.

[ICT Bill]

"Using the Kolmogorov-Smirnov
calculated vegetation estimates for SMA and NDVI. The (Davis, 1986) test, it was not possible to reject our
standard deviation of values calculated from these per- hypotheses that the SMA values are a Gaussian distributions
was found to be 1.06% live cover for SMA and tion about their calculated mean. Therefore, the uncer-
0.01 for NDVI. tainty in measuring absolute %LC using SMA was
The final source of error applies to the calculations 4.0%LC (one standard deviation from the mean). The
of SMA. Error in the SMA estimates of vegetation abun- distribution of points about the one-to-one line can be
dance is a function of the signal-to-noise ratio of the seen more clearly in Fig. 6. This histogram shows the
measurements and the spectral contrast of the endmem- number of points at each distance from the one-to-one
ber in question (i.e., vegetation) against the other end- line. While the distribution is narrow, the peak falls to
members in the inversion. This is a formal, model cer- the right of the center, indicating that there was an agtainty
and was determined to be 1.5%. gregate bias to measurements of absolute %LC."

It is all so clear now thank you