Supplementing Iron ??

Snicklefritz said:

I think i found out what is wrong with my plants. the veins have stayed green but the leafy material is yellowing. It seems that many photos of Iron def look just like what i have. How do i supplement iron? also, i read that mixing iron supplements with my fert will cause a reaction that may lock out my plant. how can i avoid this? can i foliar feed iron?

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Doctor Cannabis said:

Actually, P fixes iron deficiency. It's the other way around, not enough P will cause iron to lock out. Still, most growers won't recommend you raising the P concentration in order to avoid nute burn.

Fixing iron deficiency is easy. Rusty water (no kidding), iron chelates, ferric oxide, ferrous oxide, ferrous sulfate, greensand, gottonseed meal, garden manure, cal-mag, molasses (2 tbs/gallon) or any fertilizers with iron will fix your problem.

Edit: Also note that iron, sulfur and copper deficiencies look pretty much the same: all cause new growth to turn light green to yellow. The differences are: copper causes the tips to turn yellow first and sulfur also causes the plants general color to turn a bit lighter.

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doc111 said:

You got it wrong my friend. Go to the Plant problems forum...too much P locks out iron, just like I said. If you don't know the answer, don't be giving out bad info.

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doc111 said:

You got it wrong my friend. Go to the Plant problems forum...too much P locks out iron, just like I said. If you don't know the answer, don't be giving out bad info.

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Doctor Cannabis said:

You're right... I was thinking Potassium... K. Nutes with K usually help in cases of iron def, P just worsens the situation.

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