Foliar spraying of nitrogen - carcinogenic?

[SAMtheAPman]

So I was searching for foliar spraying information...

If you search for "foliar", this comes up:

Not all organic fertilizers are safe. Do not spray marijuana plants with fish emulsion—virtually all liquid foliar fertilizers, including fish emulsion, contain nitrates. Leaves of cannabis convert nitrates into carcinogenic N-nitrosamines.

I hadn't come across this information before and can't seem to find anything to back it up. My fish emulsion has a foliar spraying dilution ration (but it isn't a specific cannabis fertilizer).

I know that many people recommend foliar spraying during veg so I'd be interested to hear people's thoughts.

 

[Fuzzy Duck]

Mmm good point !

But then again nutrients or fert's are NOT MJ orientated but cover a larger range of plants & their application method which most are not off a smokable nature... ?


How ever in veg foliar feeding should not be a problem as we do not smoke the fan leafs, it may mean other forms of ingestion are questionable ?


Ye growing is not a science, it is reasonable easy but other aspects are at question when concerning health & the correct principles to use with out back up (scientific knowledge)

 

[SAMtheAPman]

While we're talking about nitrogen, here's an interesting article about getting your N needs from the air instead for the soil/fertilizers: World-changing technology enables crops to take nitrogen from the air -- ScienceDaily

Edit: Maybe not all it's cracked up to be: Nitrogen-fixing for All Crops Not the Answer - The Permaculture Research Institute

 

[Stealthboat]

Foliar feeding of some N during veg is definitely beneficial, assuming you have the right conditions for the plant to uptake the solution through the leaves like correct temps, humidity, etc.

 

[NerdRage]

Offsubject: What fertilizer do you prefer during flower stage 12/12 ?

 

[SAMtheAPman]

Ok, so the link has been removed from my original post by admin but if you google "foliar spray marijuana carcinogenic" it will come up on the first page.

NerdRage: too new at this to give you a good answer, haven't started flowering yet. I'll be using organic fertilizers that contain decent phosphorus (I have a rock mineral and guano that I'm planning on using).