Humic / fulvic acid, anyone experimented?
- Thread starter Adi1989
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Green Refuge
Well-Known Member
I tried kelp4less and KNF they both work great. Knf is $40 a bag but the ratios is small at 1/8 teaspoon per 5 gallon so the bag lasts a long time. Kelp4less I used the 5-2 humic+kelp and the fulvic at 1/2 teaspoon per gallon. KNF is supposed to be a pure and clean source. The guy grows great plants with just soybean amino and his humic/fulvic.
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Lordhooha
Well-Known Member
I use what's in recharge and my soil that's about it.
PJ Diaz
Well-Known Member
Organic Fulvic Acid Complex for Growers
Mr. Fulvic is an organic amendment for plant growth that increases nutrient absorption and creates healthier and stronger plants.
www.mrfulvic.com
1ml/gal
Rurumo
Well-Known Member
I like both kelp and fulvic, and together they make a great foliar spray through veg. My favorite kelp product is Age Old Kelp, it's very concentrated and smells like kelp (a lot of them don't, which I don't like). Some brands of kelp are watered down and worthless. I used to use BioAg fulvic, but now I use Mr. Fulvic now and really like it a lot. Very concentrated and they don't try to rip you off through their dosing schedule. FYI there are studies showing kelp extract and fulvic acid both help prevent or treat PM, so a kelp/fulvic spray is actually smart IPM. Here are just a couple of examples
www.researchgate.net
There are more studies too, I just picked the first two at random. Keep in mind all brown seaweed is naturally high in arsenic. The advantage of a liquid extract in this case is that most of the arsenic is left behind in the extraction process, but it's always good to know the heavy metal content of all your nutrients/supplements/media, because it adds up fast. The Age Old Kelp tests below detectable limits for Arsenic, as do a few others.
(PDF) Fulvic Acid: A Tool for Controlling Powdery and Downy Mildews in Cucumber Plants
PDF | A greenhouse experiment was carried out on cucumber cultivar DP-164 during the seasons 2012-2013 to evaluate the efficacy of three concentrations... | Find, read and cite all the research you need on ResearchGate
www.researchgate.net
There are more studies too, I just picked the first two at random. Keep in mind all brown seaweed is naturally high in arsenic. The advantage of a liquid extract in this case is that most of the arsenic is left behind in the extraction process, but it's always good to know the heavy metal content of all your nutrients/supplements/media, because it adds up fast. The Age Old Kelp tests below detectable limits for Arsenic, as do a few others.
Milky Weed
Well-Known Member
Ive been using kelp4less humic fluvic and kelp powder. Was cheap and its lasting awhile.
Ever since rurumo turned me on to the dangers of arsenic and kelp ive been going light on it to err on the side of caution.
Ever since rurumo turned me on to the dangers of arsenic and kelp ive been going light on it to err on the side of caution.
xtsho
Well-Known Member
There have also been studies that have shown that the use of humic acid actually reduced the levels of THC and other cannabinoids. I won't bother spending money on it but others are free do do as they wish. It's not going to be some kind of magical potion.
"Interestingly, HA significantly reduced the natural spatial variability of all of the cannabinoids studied. However, the increased uniformity came at the expense of the higher levels of cannabinoids found in the upper regions of the untreated plants (Figure 4). For example, following HA application THC levels at the top of the plant was reduced from 11.8 to 7.4%, and consequently concentrations throughout the plant height did not differ significantly"
"Similar effects of HA were observed for cannabinoid contents in fan leaves (Figure 3). While P or NPK treatment did not affect the cannabinoid content in fan leaves with the exception of CBCT, which was lowered by NPK treatment by 29%, HA significantly lowered the content of THC, CBD, CBG, CBC, THCV, CBCT, and CBL in fan leaves."
www.frontiersin.org
"Interestingly, HA significantly reduced the natural spatial variability of all of the cannabinoids studied. However, the increased uniformity came at the expense of the higher levels of cannabinoids found in the upper regions of the untreated plants (Figure 4). For example, following HA application THC levels at the top of the plant was reduced from 11.8 to 7.4%, and consequently concentrations throughout the plant height did not differ significantly"
"Similar effects of HA were observed for cannabinoid contents in fan leaves (Figure 3). While P or NPK treatment did not affect the cannabinoid content in fan leaves with the exception of CBCT, which was lowered by NPK treatment by 29%, HA significantly lowered the content of THC, CBD, CBG, CBC, THCV, CBCT, and CBL in fan leaves."
Frontiers | Impact of N, P, K, and Humic Acid Supplementation on the Chemical Profile of Medical Cannabis (Cannabis sativa L)
Mineral nutrition is a major factor affecting plant growth and function. Increasing evidence supports the involvement of macro and micronutrients in secondar...
www.frontiersin.org
Humic Acid Reduces THC???
just doing some reading and came across this article https://www.frontiersin.org/articles/10.3389/fpls.2019.00736/full also The influence of the nutritional supplements on mineral levels also varied throughout the plant (Figure 5). Not surprisingly, P treatment increased P levels in the fan and...
www.rollitup.org
xtsho
Well-Known Member
I make a kelp foliar but I just use what's left of the 50 lb bag of kelp meal I bought a few years ago and make my own. I just let 1/4 cup steep in a gallon of water for a couple of days, strain, and spray. I also add a little when I amend soil I'm recycling. Arsenic is a naturally occurring element. I'm not worried about the trace amounts from the little kelp I use.I like both kelp and fulvic, and together they make a great foliar spray through veg. My favorite kelp product is Age Old Kelp, it's very concentrated and smells like kelp (a lot of them don't, which I don't like). Some brands of kelp are watered down and worthless. I used to use BioAg fulvic, but now I use Mr. Fulvic now and really like it a lot. Very concentrated and they don't try to rip you off through their dosing schedule. FYI there are studies showing kelp extract and fulvic acid both help prevent or treat PM, so a kelp/fulvic spray is actually smart IPM. Here are just a couple of examples
(PDF) Fulvic Acid: A Tool for Controlling Powdery and Downy Mildews in Cucumber Plants
PDF | A greenhouse experiment was carried out on cucumber cultivar DP-164 during the seasons 2012-2013 to evaluate the efficacy of three concentrations... | Find, read and cite all the research you need on ResearchGate
There are more studies too, I just picked the first two at random. Keep in mind all brown seaweed is naturally high in arsenic. The advantage of a liquid extract in this case is that most of the arsenic is left behind in the extraction process, but it's always good to know the heavy metal content of all your nutrients/supplements/media, because it adds up fast. The Age Old Kelp tests below detectable limits for Arsenic, as do a few others.
Kassiopeija
Well-Known Member
just like Al that is abundant in many soils anyway... thing is, at the right pH these metals won't be mobilised and plant's roots are effective filters of these substances.
Though that's not to say things can't fail & go astray....
Milky Weed
Well-Known Member
I hope this isent a dumb question, but do you think the reduced thc levels could be from the plants growing more biomass overall, sort of diluting/spreading out the trichomes?There have also been studies that have shown that the use of humic acid actually reduced the levels of THC and other cannabinoids. I won't bother spending money on it but others are free do do as they wish. It's not going to be some kind of magical potion.
"Interestingly, HA significantly reduced the natural spatial variability of all of the cannabinoids studied. However, the increased uniformity came at the expense of the higher levels of cannabinoids found in the upper regions of the untreated plants (Figure 4). For example, following HA application THC levels at the top of the plant was reduced from 11.8 to 7.4%, and consequently concentrations throughout the plant height did not differ significantly"
"Similar effects of HA were observed for cannabinoid contents in fan leaves (Figure 3). While P or NPK treatment did not affect the cannabinoid content in fan leaves with the exception of CBCT, which was lowered by NPK treatment by 29%, HA significantly lowered the content of THC, CBD, CBG, CBC, THCV, CBCT, and CBL in fan leaves."
Frontiers | Impact of N, P, K, and Humic Acid Supplementation on the Chemical Profile of Medical Cannabis (Cannabis sativa L)
Mineral nutrition is a major factor affecting plant growth and function. Increasing evidence supports the involvement of macro and micronutrients in secondar...
Humic Acid Reduces THC???
just doing some reading and came across this article https://www.frontiersin.org/articles/10.3389/fpls.2019.00736/full also The influence of the nutritional supplements on mineral levels also varied throughout the plant (Figure 5). Not surprisingly, P treatment increased P levels in the fan and...www.rollitup.org
xtsho
Well-Known Member
No it's not a dumb question. I don't have an answer and that was just one study and most of the science is above my pay grade for now.
From my experience there was no noticeable increase in biomass from using humic/fulvic acid. I also didn't notice any change in taste or potency. But I wasn't really looking for it. I had the same results from both using it and not using it. If there was any difference I didn't notice.
Adi1989
Active Member
Xtsho where are you based?No it's not a dumb question. I don't have an answer and that was just one study and most of the science is above my pay grade for now.
From my experience there was no noticeable increase in biomass from using humic/fulvic acid. I also didn't notice any change in taste or potency. But I wasn't really looking for it. I had the same results from both using it and not using it. If there was any difference I didn't notice.
Have you heard of the nutrient brand plant magic by the way?
Adi1989
Active Member
Id be really interested to know what products youve stuck?No it's not a dumb question. I don't have an answer and that was just one study and most of the science is above my pay grade for now.
From my experience there was no noticeable increase in biomass from using humic/fulvic acid. I also didn't notice any change in taste or potency. But I wasn't really looking for it. I had the same results from both using it and not using it. If there was any difference I didn't notice.
it seems like you’ve literally experimented with everything.
After a while I think everyone try all these different products and most people end up cutting out all the additives and just use A&B along with bit of silica and enzymes,
Those are really the only three things Ive found make a difference from my experiments.
Foliar feeding also be a really important one to keep the plants healthy throughout.
PJ Diaz
Well-Known Member
Even though they are similar, humic and fulvic acids are also quite different. Plants can't absorb humic acids directly the way they can fulvics. One of the best things about fulvic acid is that it's an organic chelator, so growers can generally reduce their feed EC, as fulvic makes the nutrients more available to plants. I don't generally use humics in my hydro, but I always use fulvic. I think it makes a huge difference, and also allows me to be sloppy with my ph if I like.There have also been studies that have shown that the use of humic acid actually reduced the levels of THC and other cannabinoids. I won't bother spending money on it but others are free do do as they wish. It's not going to be some kind of magical potion.
"Interestingly, HA significantly reduced the natural spatial variability of all of the cannabinoids studied. However, the increased uniformity came at the expense of the higher levels of cannabinoids found in the upper regions of the untreated plants (Figure 4). For example, following HA application THC levels at the top of the plant was reduced from 11.8 to 7.4%, and consequently concentrations throughout the plant height did not differ significantly"
"Similar effects of HA were observed for cannabinoid contents in fan leaves (Figure 3). While P or NPK treatment did not affect the cannabinoid content in fan leaves with the exception of CBCT, which was lowered by NPK treatment by 29%, HA significantly lowered the content of THC, CBD, CBG, CBC, THCV, CBCT, and CBL in fan leaves."
Frontiers | Impact of N, P, K, and Humic Acid Supplementation on the Chemical Profile of Medical Cannabis (Cannabis sativa L)
Mineral nutrition is a major factor affecting plant growth and function. Increasing evidence supports the involvement of macro and micronutrients in secondar...
Humic Acid Reduces THC???
just doing some reading and came across this article https://www.frontiersin.org/articles/10.3389/fpls.2019.00736/full also The influence of the nutritional supplements on mineral levels also varied throughout the plant (Figure 5). Not surprisingly, P treatment increased P levels in the fan and...www.rollitup.org
Samwell Seed Well
Well-Known Member
Sea Green is my all time favorite Humic/Fulvic, its a big mix of kelp and fish shit... black diomond is another good one. im sure their are better but id suggest Sea Green to anyone against their favorite brands
as far as hydro safe fulvic blends, hi power, or GPF from greenplanet, Sea green(primordial solutions) has one but i havent used that blend yet
as far as hydro safe fulvic blends, hi power, or GPF from greenplanet, Sea green(primordial solutions) has one but i havent used that blend yet
PadawanWarrior
Well-Known Member
I've started using this sometimes. Seems to help make the organic top dressings available quicker.
Kassiopeija
Well-Known Member
so what happens with the fulvic after it did enter the plant?
I remember Prof. Dr. Schubert writing in "Plant Nutrition" that fulvics are rather unwanted, but he didn't outline any reason. I've hitherto assumed that they - due to their high inane acidity - accidentally mobilize heavy metals, steming perhaps from impurities or the substrate...
But could it be they change something inside the plant hormonally? That chart shows reduced THC, CBD, CBG but increased CBN - which is an oxidized endproduct of THC. Remniscient of premature "aging" or somnescence.
Alot of products state these could be used on leaves but how is that gonna connect with the minerals in the pot outside the roots?
PJ Diaz
Well-Known Member
I'm not sure, it's a good question. Fulvic acid is mostly carbon and oxygen, so I assume that it is burned up by the plant.