Dr. Who
Well-Known Member
Metals and organic compounds in the biosynthesis of cannabinoids: a chemometric approach to the analysis of cannabis sativa samples
I heard about this paper a few years back. I never bothered pay up for the whole paper. I just read a copy from a friend.
It's rather interesting. It's Serbian. The paper's point and goal are covering the ability to use gas chrome testing to place a plant's growing area by correlating the cannabinoid content and the levels of them to the mineral/micro content of the soil they grew in. *I'll give you a copy of the proper abstract later. - If it causes need for the whole paper. Your going to have to pay for it on your own - sorry.*
This paper begins by studying the minerals and what cannabinoid they influence. To make a long story short here. They found that CBN, D8 and D9 THC levels are effected by Mn (Manganese) and CBD to be influenced by Ir (Iron).
The more that was present in the soil, by area's that the C. Sativa samples came from. The higher the respective cannabinoid level! This is an interesting find. I began looking into Mn and it's use and supplementation in soil. It seems that for the most part. It is done to cover low levels for woody plants and tree's and bean/grain grops. Arborists and Orchard growers use it. I remember it being used in the greenhouse on ficus....Our farm soils test ok for it so I've never had to broadcast it on any of my fields.
I looked into the amounts they used to get the results they needed. I looked into defs and tox levels and the reactions of the plant to each.
http://nmsp.cals.cornell.edu/publications/factsheets/factsheet49.pdf
I think I have found or figured a safe soil supplementing amount per cubic feet of soil. I am just about to start testing these idea's on some plants in the next round of seed popping.
To attempt any of this, it was needed to figure the form of Mn to be used - Mn sulfate (MnSO4) is the best solution and is used as the MN source of choice in all but a very few gardening use's.
https://www.amazon.com/Manganese-Fertilizer-Greenway-Biotech-Inc/dp/B00G3YU1TC/ref=sr_1_2?s=lawn-garden&ie=UTF8&qid=1493643481&sr=1-2&keywords=manganese+sulfate
It would be best to blend this into your soils at build time. Best to add it to the watering of the soil at cooking time.....The rate looks to be 1/4 tsp per cubic foot of soil as being the middle of the road. Don't go by the rates that Palms require! That is too high for our use!
Be aware that you do this only once a year! So re-use is good for a 12 month of use - same time you add your minerals to re-used soils.
I have built my soil for this test already and am just waiting for my seed pop rotation. This has been added to my base soil and to all the others up the line, so the plant sits in the boosted soil all it's life.
This will also be done with base soil and synthetic feeding...
You should keep in mind that Mn and Ir react in plants as one becomes toxic - the other reduces and becomes a def. Proper availability ratio for Mn/Ir is generally considered as 1:2.....Something to keep in mind.
The use of a high organic Ir well water at the soil build will supply enough Ir to cover that aspect if you choose to increase CBD amounts.
It is in all the info I've found that the more organic matter in your soil - the less it uptakes! This alone should be important to organic growers!
Abstract of the paper:
http://www.fip.org/?page=abstracts&action=generatePdf&item=9875
Information on MN. I strongly suggest you read these.
http://www.pthorticulture.com/en/training-center/role-of-manganese-in-plant-culture/
http://www.cropnutrition.com/manganese-in-crop-production
http://plantprobs.net/plant/nutrientImbalances/manganese.html
I wonder if some of these uber high THC percentages we have been seeing lately. Are due to a higher Mn Soil content.
Going to have to side by side with non-supplemented soil and test for differences......Wondering if this may work.....I think it's worth the try as MnSO4 is cheap.....
Give it a shot and see what you think...
I heard about this paper a few years back. I never bothered pay up for the whole paper. I just read a copy from a friend.
It's rather interesting. It's Serbian. The paper's point and goal are covering the ability to use gas chrome testing to place a plant's growing area by correlating the cannabinoid content and the levels of them to the mineral/micro content of the soil they grew in. *I'll give you a copy of the proper abstract later. - If it causes need for the whole paper. Your going to have to pay for it on your own - sorry.*
This paper begins by studying the minerals and what cannabinoid they influence. To make a long story short here. They found that CBN, D8 and D9 THC levels are effected by Mn (Manganese) and CBD to be influenced by Ir (Iron).
The more that was present in the soil, by area's that the C. Sativa samples came from. The higher the respective cannabinoid level! This is an interesting find. I began looking into Mn and it's use and supplementation in soil. It seems that for the most part. It is done to cover low levels for woody plants and tree's and bean/grain grops. Arborists and Orchard growers use it. I remember it being used in the greenhouse on ficus....Our farm soils test ok for it so I've never had to broadcast it on any of my fields.
I looked into the amounts they used to get the results they needed. I looked into defs and tox levels and the reactions of the plant to each.
http://nmsp.cals.cornell.edu/publications/factsheets/factsheet49.pdf
I think I have found or figured a safe soil supplementing amount per cubic feet of soil. I am just about to start testing these idea's on some plants in the next round of seed popping.
To attempt any of this, it was needed to figure the form of Mn to be used - Mn sulfate (MnSO4) is the best solution and is used as the MN source of choice in all but a very few gardening use's.
https://www.amazon.com/Manganese-Fertilizer-Greenway-Biotech-Inc/dp/B00G3YU1TC/ref=sr_1_2?s=lawn-garden&ie=UTF8&qid=1493643481&sr=1-2&keywords=manganese+sulfate
It would be best to blend this into your soils at build time. Best to add it to the watering of the soil at cooking time.....The rate looks to be 1/4 tsp per cubic foot of soil as being the middle of the road. Don't go by the rates that Palms require! That is too high for our use!
Be aware that you do this only once a year! So re-use is good for a 12 month of use - same time you add your minerals to re-used soils.
I have built my soil for this test already and am just waiting for my seed pop rotation. This has been added to my base soil and to all the others up the line, so the plant sits in the boosted soil all it's life.
This will also be done with base soil and synthetic feeding...
You should keep in mind that Mn and Ir react in plants as one becomes toxic - the other reduces and becomes a def. Proper availability ratio for Mn/Ir is generally considered as 1:2.....Something to keep in mind.
The use of a high organic Ir well water at the soil build will supply enough Ir to cover that aspect if you choose to increase CBD amounts.
It is in all the info I've found that the more organic matter in your soil - the less it uptakes! This alone should be important to organic growers!
Abstract of the paper:
http://www.fip.org/?page=abstracts&action=generatePdf&item=9875
Information on MN. I strongly suggest you read these.
http://www.pthorticulture.com/en/training-center/role-of-manganese-in-plant-culture/
http://www.cropnutrition.com/manganese-in-crop-production
http://plantprobs.net/plant/nutrientImbalances/manganese.html
I wonder if some of these uber high THC percentages we have been seeing lately. Are due to a higher Mn Soil content.
Going to have to side by side with non-supplemented soil and test for differences......Wondering if this may work.....I think it's worth the try as MnSO4 is cheap.....
Give it a shot and see what you think...
Last edited:
....I knew that.
...really....
