Guide to Nutrient Deficiency or Toxicity

**nick17gar** · 11-25-2011, 06:59 AM

Originally Posted by yumyumyuh

Very helpful feed. So I am 99% sure I have a calcium problem. My leaves look almost identical to the bottom photo under calcium. Whether its an abundance or deficiency, I am not sure. My plants are well into the flowering stage and Ive been giving them steady pottash fert. Which makes me believe it might be a calcium deficiency. However I had used organic soil with hummus in it which is stated in calcium abundance. But my real question is, How do I fix a calcium deficiency? And if its an abundance..how do I correct it?

calcium deficiency youd add bonemeal to the soil... hard to do with plants already in there. ive heard crushed eggshells, and ive heard 1teaspoon milk / liter of water. no idea if any of these work, i havent had this problem before.
Abundances can be treated by flushing (if severe) or they will correct themselves over time by just watering and making sure your not adding more of that chem/element in.

**watchhowIdoit** · 11-25-2011, 07:03 AM

Just a copy/paste of info already abundant in this forum and over the internet.
http://www.greenmanspage.com/guides/plant_abuse.html

**spoad** · 11-25-2011, 07:26 AM

Ive looked through all defs on here and cant find any that resemble mine,a black spot appears then the next day it turns brown then gets bigger and eventually it drys and the leaf is damaged to much,the plant is only 17 days old and the rest are fine,sorry dont have no pics but help and possible info would be appreciated,thanks?????

**nick17gar** · 11-26-2011, 07:53 AM

Originally Posted by spoad

Ive looked through all defs on here and cant find any that resemble mine,a black spot appears then the next day it turns brown then gets bigger and eventually it drys and the leaf is damaged to much,the plant is only 17 days old and the rest are fine,sorry dont have no pics but help and possible info would be appreciated,thanks?????

ummmmmm yea a pic is the best way to know man. a lot can start as a dot that gets bigger and badder. is this happening on all the leaves? just one? where did the dot of death start? middle of leaf? tips? what color are the leaves? are they a nice rich green from top of plant to bottom? theres a lot of factors to take into account when something goes wrong.

**TheNewGuyy** · 11-30-2011, 01:59 AM

what does it mean if all of the leaves are light green in color? they also have burnt edges and tips. I have done some research but cant quite identify

**Rick Ratlin** · 12-02-2011, 02:08 AM

+1 awesome thread looks like i need to foliar feed some cal-mag

**Hotsause** · 12-02-2011, 11:26 AM

Nick you are the man this is by far the easiest and most helpful guide to navigate and get your info. + Rep and much love for doing this

**ottawaliquid** · 12-08-2011, 01:41 PM

Big help.. Thanks for sharing!

**mcgyversmoke** · 12-09-2011, 03:37 PM

Hey there,
First off thanks for writing this up it helped alot.
and second im pretty sure this is magnesium deficiency but id really like a second opinion