Why is sulfur never a consideration?

[churchhaze]

toxicity, there is zero issue with sulphates

This is incorrect. It's very easy to feed at toxic levels of S in the same way that it's easy to feed at toxic levels of P. In fact, there are no elements, including N, that can't be fed at toxic levels.

Too much of any one ingredient is toxic.

 

[churchhaze]

what brand of potassium sulphate can I use in my ebb n flow?

Is MKP a brand reference or just the 3 nutrients found in a group of products?

This is Major learning curve for me guys!

Bless,
DZ

MKP is monopotassium phosphate. It's KH2PO4 and is generic PK booster. (or a main ingredient to a complete hydro formula)

 

[churchhaze]

I generally recommend against using potassium sulfate as I find it's a lot better to get your potassium from potassium nitrate and MKP. Potassium sulfate is a salt I don't even use to make my mixes.

 

[RM3]

This is incorrect. It's very easy to feed at toxic levels of S in the same way that it's easy to feed at toxic levels of P. In fact, there are no elements, including N, that can't be fed at toxic levels.

Too much of any one ingredient is toxic.

I know you don't like me and that is ok but I do my research and I don't just say things,,,,

Sulfur Toxicity: Sulfur toxicity is very rare and will most likely not occur even if excessive sulfuric acid is injected to neutralize water alkalinity. High sulfur levels in the growing medium can compete with and induce nitrogen deficiency.

Then there is this,,,,

http://www.zielen.ogr.ar.krakow.pl/Kurinro/publikacje/KURiNRO_Rok_2005_Nr _04_Kowalska_Fola Hort..pdf

I can go get more, it is pretty much accepted that Sulfates are not toxic to plants

 

[churchhaze]

I know you don't like me and that is ok but I do my research and I don't just say things,,,,



Then there is this,,,,

http://www.zielen.ogr.ar.krakow.pl/Kurinro/publikacje/KURiNRO_Rok_2005_Nr _04_Kowalska_Fola Hort..pdf

I can go get more, it is pretty much accepted that Sulfates are not toxic to plants

You would be wrong to think that the reason I disagree with so much of the stuff you say is because I don't like you.

 

[churchhaze]

it is pretty much accepted that Sulfates are not toxic to plants

This statement contradicts the quote you made from that pdf about how it antagonizes nitrogen.

Also, if you grew in DWC, you'd understand the risk of water clouding with high P and/or S. You never mention this or warn DWC growers.

 

[RM3]

This statement contradicts the quote you made from that pdf about how it antagonizes nitrogen.

Also, if you grew in DWC, you'd understand the risk of water clouding with high P and/or S. You never mention this or warn DWC growers.

the quote did not come from the pdf
antagonizing N at the end of flower is not a bad thing nor does it indicate a toxic issue
and to be honest I can't advise or warn DWC growers as I know nothing about it and most likely never will. I do often say may not work in hydro or may require a different method ?

 

[Kingrow1]

Seems like your both right and both have contributed some great info on this thread. Like Rm3 i predominately grow in soil and love my t5's and churchaze youve always given me great hydro advice.

 

[greasemonkeymann]

You got me closer my friend - I was ready to dump the whole bag into a gallon of water & let her go.
Thank you bro.

I'll prolly begin with a gm into 1 gallon with a bit of insect frass.
Just trying to tease them a bit.

neem meal mixed with vermicastings is a good one.
also depending on the guano, certain bat guanos from certain caves have sulfur in their guano
limestone caves?
can't remember
manure has sulfur, but obviously is potent and should be composted prior

 

[greasemonkeymann]

Elemental Sulfur takes a long time to break down and LOWERS PH

gypsum is a great source for sulfur, calcium too. and doesn't effect ph much, in fact it increases it a bit, and counters aluminum's bioavailability (for those that like azomite)

 

[greasemonkeymann]

I can't believe I missed this thread. Calcium and magnesium are not micro nutrients. They are both macro, as is S. Calcium is actually used more than phosphorous.

Sulfur to nutrient designers is usually used as a freedom variable. That means that while it's only needed at 30-40ppm, designers will often use slightly more or less to fine tune other elements (like magnesium, magnesium sulfate will give you sulfate as well).

To touch on your main point though, S simply isn't needed any higher than 30-60ppm (60 being pretty high). It's similar to P in that too much is a bad thing as it will antagonize other elements and make it more likely that your water turns cloudy. (P and S are both like this)

Mg is also needed at about 30-60ppm depending on how hungry the plant is for Mg, and much Ca and K you have already. (more Mg needed to balance the Ca and K) Mg:S ratio should be about 1:1

goo shit to add!
most people forget about the ratios of everything being crucial.
especially in regards to calcium, phosphorus, and magnesium, too much of those can reaaaaaally fuck shit up

 

[Dogenzengi]

Not a brand. It is a salt. EBay or Amazon have it.

Hondagrower420,
I got my hands on some Potasium Sulphate and I am waiting for the Mono-Potasium phosphate.

My question, how do I use these products in an Flood and Drain SOG.

I assume small quantities, but if plants are always 2 weeks old and 8 weeks old how much should I be using.
My Res is 40 gal, table 4x4, 32 plants in Rock Wool, no other medium.
3- 15 minute feedings during lights on.

I only started using this specific setup on the 3rd of last month so it is unfarmilar territory.

I am starting to see some Magnesium Deficiencies but not Terrible and not in every plant.
Three strains are Double Berry, The Widow and White Siberian.

My res change is tomorrow and I will up my Cal-Mag to 8ml per gallon.

My Nutes are FoX Farm trio, I have the 3 supplements but that's what the MKP and the PS are replacing.

Thanks for reading!
Bless,
DZ

 

[hondagrower420]

Hondagrower420,
I got my hands on some Potasium Sulphate and I am waiting for the Mono-Potasium phosphate.

My question, how do I use these products in an Flood and Drain SOG.

I assume small quantities, but if plants are always 2 weeks old and 8 weeks old how much should I be using.
My Res is 40 gal, table 4x4, 32 plants in Rock Wool, no other medium.
3- 15 minute feedings during lights on.

I only started using this specific setup on the 3rd of last month so it is unfarmilar territory.

I am starting to see some Magnesium Deficiencies but not Terrible and not in every plant.
Three strains are Double Berry, The Widow and White Siberian.

My res change is tomorrow and I will up my Cal-Mag to 8ml per gallon.

My Nutes are FoX Farm trio, I have the 3 supplements but that's what the MKP and the PS are replacing.

Thanks for reading!
Bless,
DZ

I drop my base nutes to half strength when I add mkp. So if I am shooting for 1.4ec and my base nutes get me to 1.0ec. I make up that .4ec with mkp.

As far as the potassium sulfate, same as mag sulfate. I think its a tsp per gallon.

I would use one or the other. Not both at the same time. I would think it would be to much potassium if you use both.

I'm still learning and I'm sure somebody will drop more knowledge.

Hope I could help.

 

[HydroLynx]

I read a paper that says boosting sulfur likely improves carvone and other terpenoid levels in Mint, in soil and DFT hydro.

In recirculating hydro, sulfur (and magnesium and esp calcium) build up as they are taken up by plants much slower.

 

[Cold$moke]

Cal-mag is not something you necessarily want to emulate, but rather replace; for the calcium, use calcium nitrate. You get nitrogen as well, which is also what's in cal-mag. Then instead of mag nitrate, use epsom salt (separately, as discussed!) and you now have sulphur as well.

I should be fine if im running cal nit and mag sulphate right?

 

[Cold$moke]

Thank You Hondagrower420,
Do you know a good brand of MKP for use in Hydro?
Bless,
DZ

Found mine at hydro gardens 13.95 for 5lbs

 

[Dr. Who]

I read a paper that says boosting sulfur likely improves carvone and other terpenoid levels in Mint, in soil and DFT hydro.

In recirculating hydro, sulfur (and magnesium and esp calcium) build up as they are taken up by plants much slower.

Differing sulfur sources can influence differing terps.

Mg is more berry like and K is more citrusy.


It should be noted that it's a recurring argument among plant science's. That S should be classified as a MARCO nutrient.

 

[Pulpit_]

I Just switched to Jack's with 5% sulfur and also adding cal/mag. Resin production is through the roof vs A/B formulas. S and Mg are key for resin and that dank smell. I have also increased my yields making rosin by approx 50% so it sure does work.

 

[Kingrow1]

I dont use anything special now, complicated days are over, soil and one general fert provides everything.

I urge you all to just treat the plant as not a fussy grower and forget any additives.

These threads are a progression and nice to put a recent post up for those that read.

Soil is far too easy, environment is all that matters to me now. Good luck all

 

[VibesTek]

We add plentifull amounts of NPK and god only knows how much cal/mag, micro nutrients are needed in such small amounts you really have to try hard to get a deficiency in these, but i never hear any mention of sulfur.

It seems to be needed in large enough amounts as cal or mag and way more than your micro nutrients with confusing deficiencies that half resemble iron, zinc and nitrogen.

Just strange it gets little mention whatsoever....

I myself am just recovering from a sulfur deficiency in my Dwc set up. Somehow the amount of sulfur in my florabloom wasn't enough. I add Epsom salt now and all is well. It took me a while to notice what the deficiency was and took about a week to recover.