Anyone tried temperature control to shorten internode length?

According to http://www.cannabisculture.com/articles/1536.html

"Plant internodal length is directly related to the difference between day and night temperatures; the warmer your day cycle is as compared to your night cycle, the greater your internode length will be. The opposite also holds true; the closer your day and night temperatures, the shorter your internodes will be.

It is during the first 2-3 weeks of the flower cycle that most strains begin to lengthen internodes, making it a very important time to control temperature, as this is when the framework for future colas is built. After this 2-3 week window we need to drop the night temperature back down to 22?C, as this is where the plant is happiest."

Has anyone tried this method? Keeping day/night temps close for the first few weeks of flower?

Don't know about temp differences but studies have been done to show that internode spacing (growth) increases during the dark period, here is a quote from one

The general idea of the relative elongation rate (RER, %/hour) was introduced here. Internode elongation tended to increase during the night in almost all growth stages, and the overall internode elongation profile was determined to be approximately 3% per hour during the day and 6% during the night. Thus, it became clear that RER was promoted during the dark and, consequently, that the elongation of plants can be controlled by adjusting the respective lengths of day and night. These findings could provide fundamental data for research on controlling plant elongation.

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I am also aware that internode spacing is triggered by the far infrared light spectrum and most greenhouses (selling regular plants) use an Infrared filter to keep the plants shorter while getting ready to sell them (allows them to put more plants in a given space)

That's good info - maybe a good reason why during veg you should keep lights on 24 hours instead of 18/6. It becomes meaningless once you are forced into the 12/12 cycle for flowering though.

The article i mentioned is regarding the flowering stretch.

I have found this to be very true. I am having a hared time controling my temps right now so I started using bushmaster. so far I really like it. The first time I used it I used WAY to much and ended up with 6" plants when they were done flowering. If your having problems with stretching I highly recommend humbolt countys own bushmaster

i have found this to not be true (in my limited experience) =D
during veg of my bagseed (see sig), i had a temp variance of about 25 degrees between night and day, and through keeping my lights as close as possible, my plants stayed relatively tight (at flower i actually had to stretch them a bit intentionally just to get a little more height). one plant was so tight, it had 6 nodes and was @ 6 inches tall.

not saying that it isnt true or the science isnt there, just thinking that you can manipulate other factors like light brightness and distance to alter spacing as well.

Maintain temp. above 72 for day and night for first 2 weeks will reduce stretching during the flower stage. Avanced nutes custom feeding chart #2.

I have not heard this before but my temps only change about 6 degrees and my flowering stretch has been minimal.