I wouldnt for the life of me believe in anygov limits on safety, health, security, etc...i would be like you, aim for zero....It does seem scary when you first look up all of your nutrients and find out how high some of them are in heavy metals, but if you go through them one by one, it's not too hard to find clean alternatives. I also had issues with high heavy metals at one point, but now my bud is clean! You can just go by what the state allows, but I aim for NDL across the board...why? More like, why not...
ATM im using Megacrop A+B and i cant say nothing bad about it...weightwise and flavorwise...
Last run i didnt even boost the P and i feel like the main buds were bigger , harvested the same amount but i was surprised given the fact that i skipped pruning and the bottoms were full of small nugs,,
Seems that you wana stay out of everthing that is EDTA chelated...
Im actually preferring it to the old one formula version cause im starting to think that dosing the plants each time with chitosan is not the best....
You know funny ingot into an argument with someone on hereNot sure if anything would be useful in this thread but the video from Illinois small farms may be something of interest.
Heavy Metals In Soil And Amendments
I have been doing some digging through and figured I would share it. It seems to me as a cannabis smoker cadmium is our most concern as a heavy metal due to its uptake from plants being much greater than lead and arsenic etc. but as a soil maker lead is a great concern as well when mixing and...www.thcfarmer.com
Op only waters directly to soil. So the plant must be taking it up somehow. Can it be chelated and brought up? Can it be brought up with another element? Anyone know what heavy metal molcules are same or similar in size to the elements usable by the plant?Well I think it depends on the nutrient you are speaking of. Plants do regulate their uptake of various nutrients but in different ways, stomata comes to mind. If a plant needs phosphorous it can send out exudates to roots to lower the pH and provide a more acidic area in the rhizosphere but this also frees up metals more in the soil too. Many heavy metals are only taken up when the pH is low and in some cases, really low. I think plant uptake is less likely the case in most cases. Yes plants take it up sometimes but most of the time heavy metals are from stirred up soil/direct contact with soil or in the case of cannabis, being sprayed with something high in heavy metals and it accumulates on the bud and leaf.
could you recommend some of the products you chose?It does seem scary when you first look up all of your nutrients and find out how high some of them are in heavy metals, but if you go through them one by one, it's not too hard to find clean alternatives. I also had issues with high heavy metals at one point, but now my bud is clean! You can just go by what the state allows, but I aim for NDL across the board...why? More like, why not...
I also do Foliar spray but I stop once plants go into bloom cycle.Op only waters directly to soil. So the plant must be taking it up somehow. Can it be chelated and brought up? Can it be brought up with another element? Anyone know what heavy metal molcules are same or similar in size to the elements usable by the plant?
Some kelp is okay IMO depending on the state and testing reasons but the problem is that we are all using concentrated kelp and people often use large amounts when only a shot is needed. You also want to keep cleanliness in mind when purchasing the kelp and also search for certain types of kelp that are sourced in cleaner and colder water. Anything northatlantic is best. You may want to search out animal feed kelp also. I mean no offense to you but the term bioaccumulator is kind of silly. I used to buy into it but in reality all plants and algae are bioaccumulators. Just my two cents but having said that, I would personally only feed the kelp to the soil and not spray on to the plant. The plant will have a harder time uptaking metals so it is another level of defense compared to drenching the plant.I read somewhere once that kelp is abundant in mercury, arsenic and other toxic elements. It is what they call a hyperaccumulator or bioaccumulator. I’d take out kelp. Mercury is neurotoxic. So I’d be careful with the kelp ideas.
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