cobshopgrow
Well-Known Member
1% should be as harmless as it can get probably, its fine and somehow needed somewhere in small amounts.I think he was referring to my bag, the Calcinit with its 1% Ammonia should be perfectly fine, the ammonia can either be broken down by bacteria or directly absorbed by plants, too.
actually to feed plants a combination of Ammonia & Nitrate is going to give the best results, although it may vary widely between individual species.
Plant Nitrogen feeding is actually a whole topic in itself...
this ones for potatoes though:
ammonia is good if you have hard water, to adjust your PH and then rely on bacteria to do the job for you.
small amounts are taken up directly, ive read somewhere up to 10ppm is nice to have.
if you dont rely on bacteria, hydro, you should use as little as you need to get your water PH right.
Amnonia tends to lock out CA, nitrate doesnt.
Ammonia is toxic at a far lower amount then nitrate.
i was too lazy to calc your ppm jakstraw, but my thumb tells me youre quite golden,haha.
have missed the epsom note! sry.
for tomatoes
• Too much NH4‐N will reduce Ca content of the crop, may reduce growth ‐ BER • NH4‐N is particularly likely to harm the plant early in the season when conversion of NH4‐N to NO3‐N is slow • Up to 10% of N requirement can be supplied in ammonium form, but a level of more than 20% will result in BER (reduced yield)
Kass, i have never used ammonia in this form, youre right probably its a natural pesticide, fungizide, could be that "natural" is quite relativ,cyanamid sounds a bit nasty.
also ferts for seedlings/young plants are rich in ammonia, check these cheap starter ferts out everywhere.
while it contradics a bit aboves quote " NH4‐N is particularly likely to harm the plant" and even in soil its may not needed that much, the microbes will simply do, no soil expert at all.
i would also say 50ppm is a good value for S and there is room to give more.
these peters jacks megacrop hydro 2 part ferts often are around this value too.