Agriculture Reference
In-Depth Information
EASY FIXES FOR NUTRIENT PROBLEMS
When you are TLO growing in containers with my suggested recipes and formulas to start out
with, you cannot experience a nutrient deficiency. However, if you do have a problem nutri-
ent, use this guide to troubleshoot your issue.
Potassium deficiency (K). This often has to do with your environment being too hot and
dry which raises your plants metabolism and they almost literally sweat out the potassium.
Molasses, kelp meal, greensand, and alfalfa all bring in good levels of potassium, and make
sure to add enough greensand when first making your soil mix as a proactive measure that
works awesome.
Nitrogen deficiency (N). Nitrogen is easy to supplement with liquid fish fertilizer in teas.
Top dressing with high N bat or bird guanos will work within 10 days or so. Feather meal in
your mix is actually very important here as a proactive measure, because in a supernaturally
alive soil mix even blood meal can be consumed über-fast. Feather meal has staying power
and is especially important when building containers for longer flowering sativas.
Phosphorus deficiency (P). Never ever pour liquid phosphorus rich fertilizers on; this will
completely screw up the myco fungi in the container. Using spikes, along with additions of
Big Bloom liquid in teas, can keep the fungi happy and healthy while still enriching the soil
mix. Cannabis can store enough P to take her about half way through flowering (4 weeks).
Sulfur deficiency (S). This looks a bit like an iron deficiency. Gypsum and soft rock phos-
phate are both great proactive ways to avoid this from being deficient in recycled soil
mixes. Running ambient temperatures too high during lights out time can interfere with sul-
fur uptake and absorption. Foliar feeding with dissolved Epsom salts will work in an emer-
gency and allow about a week to take effect, spraying every day.
Magnesium deficiency (Mg). Greensand, soft rock and rock phosphate all bring in some
Mg, and molasses is usually high in Mg too; around 8%. Molasses and or CaMg+, used
mellow but steady, should fix a lack of this in about a week.
Calcium deficiency (Ca). Ca and K are closely entwined in TLO growing, and when you
have an issue with one, the other will almost certainly show up. Too much calcium is nor-
mally the problem here, and you should be careful of your water source and any calcium li-
quid additions you use. Oyster shell, bone and feather meal, dolomite lime and gypsum, and
the liquid CaMg+ I use at 10 drops per gallon of pure water, are all good for calcium and
cannabis. Avoid hard water, or using too much liquid calcium.
Manganese overdose (Mn). The problem with manganese is it is usually in fluctuation as
far as levels go in ground water. City tap and well water will sometimes be very high in
manganese at certain times of the season depending on rainfall amounts. If your pH dives
for any reason and there are high levels of manganese present too, you can get a fast and
deadly result in your garden. Always best to start with pure water I think, for so many reas-
ons. Mn is present in mineral additions and I have never seen it deficient.
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