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Full text thread: post papers you want in full text...

Avenger

Avenger

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Only a few more credits left, so pick and choose wisely. :sasmokin:
 

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spurr

spurr

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@ MicrobeMan,

I know you didn't ask for this study, but I thought you would be interested in it. I thought you would especially be interested the section tilted "Root-Microbe Communication"

"Root Exudation and Rhizosphere Biology"
Travis S. Walker, Harsh Pal Bais, Erich Grotewold, and Jorge M. Vivanco
Plant Physiology, May 2003, Vol. 132, pp. 44–5

:ying:
 

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Microbeman

Microbeman

The Logical Gardener
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spurr said:
@ MicrobeMan,

I know you didn't ask for this study, but I thought you would be interested in it. I thought you would especially be interested the section tilted "Root-Microbe Communication"

"Root Exudation and Rhizosphere Biology"
Travis S. Walker, Harsh Pal Bais, Erich Grotewold, and Jorge M. Vivanco
Plant Physiology, May 2003, Vol. 132, pp. 44–5

:ying:
Click to expand...

I was actually thinking today while driving about the pattern of plants growing in patches naturally... wild monocropping if you will. One always sees patches of nettles, fireweed, mullien, yarrow, etc. besides the infamous knapweed et al and of course redwood forests. It puts up a wonder of potential for allelomolecules exuded for the preservation of the species and even strategic withdrawal or inhibition of defensive exudates (a quorum reduction perhaps) to sacrifice a few plants to pathogens for the survival of the species.

hmmmm...one wonders if there is some sense to monoculture horticulturally...to a degree that is.
 
junior_grower

junior_grower

Active member
okay I finished the last exam @ 6:30 tonight, emailed off my last paper, and have finally smoked some wonderfully pot maybe a little to much. The point is what papers are still needed cause I have lost track? I'm at school all day tomorrow cleaning out the lab locker so ill have time to grab a few dozen papers between beers.
 
spurr

spurr

Active member
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junior_grower said:
okay I finished the last exam @ 6:30 tonight, emailed off my last paper, and have finally smoked some wonderfully pot maybe a little to much. The point is what papers are still needed cause I have lost track? I'm at school all day tomorrow cleaning out the lab locker so ill have time to grab a few dozen papers between beers.
Click to expand...

How do you think you did on your exam? Hope you did well!

There are only two papers that are still in needed from this thread at this time, both from informaworld:

Somaclonal Variation: Origins and Causes
Author: Philip Larkin
http://www.informaworld.com/smpp/content~db=all~content=a713575833~tab=content~order=title
requested by HonkyTonk in this post


"Mineral nutrition of Cannabis sativa L."
S. Landi
http://www.informaworld.com/smpp/content~content=a905881394&db=all
from yours truly
​
If you can get them, great, if not thanks for trying :tiphat:
 
spurr

spurr

Active member
Veteran
@ Junior Grower,

I might or might not have access to the following journal, I haven't checked and just re-found this study I found years ago elsewhere. If you have access to the following paper that would be good. Otherwise I might, I will try it tomorrow.
"Responses of Greenhouse-grown Cannabis sativa L. to Nitrogen, Phosphorus, and Potassium"
C. B. Coffman and2. W. A. Gentner
Agron J 69:832-836 (1977)
https://www.crops.org/publications/aj/abstracts/69/5/AJ0690050832​
If anyone is interested here is a post I made about the abstract of that study when someone mentioned they thought the abstract showed cannabis should get higher P and lower K; from the following thread:
Hemp (Cannabis sativa L) tissue nutrient analysis data
https://www.icmag.com/ic/showthread.php?t=181405​
There are a couple of issues with the wording of that abstract:

1. It doesn't list the levels of P, K, etc. used in fertigation water relative to the results. Ex., it doesn't list the ppm level of P that gave the highest level of THC, CBD and growth; and same goes for level of K. I.e., "...Phosphorus and K from super-phosphate and KCI, respectively, were applied at 0, 50, and 150 ppm.". For all we know, 50 ppm P gave the best results for P (verses 150 ppm), and 150 ppm K gave the worst rustles for K (verses 50 ppm). The following sentence of the quote is a prime example of why I think 50 ppm P was better than 150 ppm P: "Thus, it was possible to partially characterize a soil by tissue analysis. For example, all of the plants grown on soil with less than 100 ppm of extractable P2O5 contained less than 8,000 ppm {Delta}9THC."


2. The last two sentences of the abstract basically nullify the study as a means to form a definitive answer: "Usefulness of such relationships will be dependent upon extensive evaluation of Cannabis on different soils under various cultural conditions. At this time, the reliability required for determination of origin of Cannabis derivatives via chemical analysis does not exist when only essential elements and cannabinoids are considered."


3. The abstract doesn't list the levels of P, K, etc. extracted from the soil relative to the results; it only gives one ambiguous example of exacted P2O5. Without quantitative data we can not from definitive opinions based upon that abstract in terms of amounts of elements and their effect upon growth and cannabinoid levels of cannabis.


4. The soil extraction method used (via strong acids) is not representative of the actual P that was available to the plant (the same goes for K, N, etc., albeit to a lesser degree). In terms of P, it is because much of the inorganic P added to fertigation water is made insoluble once in soil; and also because soluble P has very low mobility in the "soil solution" (thin layer of water surround media particles). Using strong acids as a soil test of potentially plant usable ions (both soluble and insoluble) is flawed because it doesn't show what the plant has access to (see #5 below), thus it doesn't show only what the plant can take up.


5. The much better soil (and soilless) test method of potentially plant usable (both soluble and insoluble) elements, especially P, is the Co2 extraction method. Few soil scientists use that method, even though it's much more representative of what the roots have access to in soil. That is because the Co2 extraction method mimics the weak acids (ex. carbonic acidic, citric acid, etc.) found in soil that help solublize P and other ions for roots to take up.


FWIW,

My own trials with low P (via my mix at 39 ppm P) verses high P (via the Lucas formula, both the traditional 0-8-16 formula and his updated FloraNova Bloom formula; both with > 105 ppm P); showed reduced P did not reduce growth or yield or THC content (via my testing with comparative TLC). Also, Oswizzle has been testing my mix for a while now and he found the same as I did verses the Lucas formula (with FloraNova Bloom) in terms of growth and yield. Not only that, but Grat3fulh3ad's formula, which is used by MANY growers, has 60 ppm P, and no one has complained about reduced yield or high from his mix AFAIK...
Click to expand...
 
junior_grower

junior_grower

Active member
well so far my A average is intact tonights exam well I'm hoping to keep my A but it was a beast. Ill look for those tommorow morning before the bar opens at 11
 
spurr

spurr

Active member
Veteran
@ junior_grower,

Any success on getting those papers? Or did the beer get in the way? ;)
 
Honkytonk

Honkytonk

Member
J Biol Chem. 2004 Sep 17;279(38):39767-74. Epub 2004 Jun 9.
The gene controlling marijuana psychoactivity: molecular cloning and heterologous expression of Delta1-tetrahydrocannabinolic acid synthase from Cannabis sativa L.

Sirikantaramas S, Morimoto S, Shoyama Y, Ishikawa Y, Wada Y, Shoyama Y, Taura F.

Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.

http://www.ncbi.nlm.nih.gov/pubmed/15190053

Happy New Year and all that...:tiphat:
 
G.O. Joe

G.O. Joe

Well-known member
Veteran
Honkytonk said:
J Biol Chem. 2004 Sep 17;279(38):39767-74. Epub 2004 Jun 9.
The gene controlling marijuana psychoactivity: molecular cloning and heterologous expression of Delta1-tetrahydrocannabinolic acid synthase from Cannabis sativa L.

Sirikantaramas S, Morimoto S, Shoyama Y, Ishikawa Y, Wada Y, Shoyama Y, Taura F.
Click to expand...
Many journals are free, and that's one. From Googling the title:
http://www.jbc.org/content/279/38/39767.full
 
David762

David762

Member
This is one thread that definitely needs to be sticky!

This is one thread that definitely needs to be sticky!

spurr said:
hey all,

If Oldpink allows it, I would like to have a thread where Ic'ers can post papers they would like to read in full text, but not have to pay for. I, and others with access to many for-cost academic journals are willing to download the full text, and then upload it here.

Getting the full text without paying for it does not take any money away from the authors; just make sure to cite them because it's only fair to do so.

:bump:
Click to expand...

This is one thread that definitely needs to be sticky! :tiphat:

Citing the author (and particulars) with full credit is quite reasonable.
 
sac beh

sac beh

Member
So I did a google scholar search for cannabis, filtered to 2011, just to see what's new since the new year. I came across this intriguing title:

Small Cell Lung Cancer in a 26-Year-Old Man with Significant Cannabis Exposure
Journal of Thoracic Oncology:
January 2011 - Volume 6 - Issue 1 - pp 218-219

There's not even an abstract available anywhere, as far as I can see. I'm dying to see what "significant" cannabis exposure is and how it produced this cancer.
 
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