(Pics) Tell me what this nutrient deficiency is

cheeseschrist said:

These pics are from a White Widow plant which has been grown with ph around 7.0, 40 to 50 percent humidity, temps around 75-80 F, FF nutes in soil. This is plant is in it's second week of flowering and has exibited slowed growth and all of the following in it's new(er) leaves: chlorosis, horizontal twisting, raised margins (although this may be due in part to close proximity to CFLs), and mild/moderate deformation. Leaves don't bend down and there is no necrosis I have recently been working with a prelim diagnosis of zinc and or manganese deficiency as the culprit which I have treated with a flush, complete fertilizer, lowering ph (around 6.5) and giving the plant somewhat warmer water. This has yielded improvement but not cured the plant(s).

Click to expand...

cheeseschrist said:

Thanks ariwave; I have seen that site and can safely say this plant looks zinc/maganese deficient. I wonder, however, why the flush, lower ph, and using the fertilizer didn't cure the problem completely.

Click to expand...