Thanks for the how-to. I definitely used too much.Brain Strain Pepper Head said:A little goes along way... And wait until it drys before you turn the light on again. I foliar right before my lights go off. I prefer using Cal-Mag from Botannicare with my nutes ... but I have used Epsom Salt in the past.
When is it okay to use epsom salt?
-When you have diagnosed your plant as being Magnesium deficient or locked out. The leaves appear evenly striped, with a pale streak running cleanly down the center of each interveinal region on the leaf.
-When you are already correcting the CAUSE of the initial deficiency or lockout. This means identifying and fixing all soil, water, fertilizer, and envrironmental problems and actively addressing them.How should you apply Epsom salt?
-Using a Magnesium compound as a foliar spray is less risky than adding it to your fert solution (unless you have calculated what you need or are using CalMag Plus). Fill a spray bottle with lukewarm tap water. Add one drop of dish soap and 1/4-1/2 teaspoon of Epsom salts. Allow to dissolve. Mist lightly, not to runoff or beading, onto affected leaves just when the lights come on. Repeat daily until pale stripes disappear.
Beginning when the blossoms on your tomatoes or peppers first appear, apply a foliar spray made up of 2 tablespoons of Epsom salts to a gallon of water once a month, as a substitute for one regular watering. Every six weeks until harvest, work 1 tablespoon of the compound per foot of plant height into the soil around the vegetables. Early in the season, the Epsom salts should aid in root and cell development, photosynthesis and plant growth and stave off blossom-end rot. Used late in the season, the result should be greater tomato and pepper yield.
I guess I'll charge this to experience and still lucky I didn't kill the plant.geeme said:Yes, that is definitely fertilizer burn. Not the worst I've seen, but pretty bad. Make sure you only use plain water for the next several waterings to help flush out the excess. Note that the old growth will not return to normal, but your new growth should start coming in fine.
The rate suggested on the pack here is 10 g per litre that works out as 2 tablespoons per 3 litres.Sarge said:Unless someone else pointed it out but 2 tablespoons per litre is too much. You only need 1. Ontop of that you risk locking out calcium by just doing a spray with epsom so you MUST be sure you need the magnesium.
harry said:The rate suggested on the pack here is 10 g per litre that works out as 2 tablespoons per 3 litres.
The plant in the photo appears to be a perfect example of Calcium lock out caused by the likely bonding of Ca2+ with the SO42-.
Taking into account the bumpiness from the overdose of Magnesium sulphate it doesn't appear as it needed additional Magnesium or sulphate in the first place.
Rainman said:I read a post on this forum that suggested 2 x tablespoons per litre on here... like you I tried it and it burnt my plants pretty bad.
I did a flush as has been suggested and the new growth has come back strong. The burnt leave look a little ragged, but as long as they pod up I wont mind how they look tbh.
I've since moved to 2 x teaspoons per litre and I'm seeing some benefit to the flowers and not so much havoc to the leaves.
Hope the flush works for you...
The rate I have foliar fed Epsom Salt at is half a teaspoon of Epsom Salts per litre. I agree with Sarge on a regular size spray bottle being an ambiguous metric.jlacosta said:As stated, 2 tablespoon for a regular spray bottle. I was under the impression that a 1 liter bottle was as regular as they can get but it seems like he might have interchanged tsp with tsb. It killed the one and only wild brazil that germinated that I ordered when I was in the US. I think it's because it had smaller leaves that it was more sensetive than the habs. I flushed and gave them a foliar bath yesterday and today. everythign seems to have gone back to normal (like they stopped burning) and hopefully, new growth will be normal.
The predominant product from dissolving egg shells in vinegar is Calcium acetate via the reaction of Calcium carbonate with acetic acid. Calcium phosphate is a minor pre-existing component of the egg shells. Calcium acetate is desirable as it is water soluble.jlacosta said:Hi Sarge, that's exactly what I am doing. Ground up egg shells, semi-roasted and fermented in vinegar. 1 part shell 5 part vinegar. It's supposed to produce calcium phospate after 4 weeks of fermentation. Mine is still 2 weeks to go. It's derived from a korean style farming.
Had to edit my first post when I realized the language was Filipino. The new link should be a better reference on how to make organic calphos.
What you can see above is one type of fertiliser burn. An excess of other nutrients may present itself differently. See Symptoms of Deficiencies and Toxicities by Element on hydroponics.net for a table that describes the impact of an excess of other nutrients.filmost said:Wow, and now I know what fertilizer burn looks like. Hope everything turned out okay!