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calcium or magnesium def?

  • Thread starter Thread starter Tank333
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calcium or magnesium def?

Tank333 10 Replies 1,377 Views
Page 1 of 1 · Replies 1–11 of 11
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Tank333

Tank333

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#1
So, I've got some rust spots going on in my flower room... I'm pretty sure it's ca or mg deficiency, but I wanted to get a couple extra opinions...

Calcium or magnesium def
Calcium or magnesium def 2
Calcium or magnesium def 3
Calcium or magnesium def 4
 
#2
PH problem it looks like. Or root aphids. It's scary to see micro def in old growth. Normally calmag will show in newer growth.

Looks like Mites too?
 
#3
No bugs, I'm positive of that... white flecks is residue from unwashed foliar. I used a baking soda wash before the sulfur burner got here to deal with the PM. I was going to wash everything as soon as the burn was done this morning... I'll check the PH, too, but I had adjusted it last night before the burn.
 
#4
No really sure what's Goin on but i would not wash the suffer off your plants just yet.give it some time tank bro;)
 
#5
Yea? How long do you usually wait before washing after a sulfur burn?
 
#6
looks to me like general over fert...i see molybendum def, phosphorous def, cal def, potassium def...looks to me like general lockout due to over fert
 
#7
Tank333 said:
Yea? How long do you usually wait before washing after a sulfur burn?
Click to expand...
I only ever sprayed one plant that was treated and it was about 7 days after the burn right at chop.i usually cover anything close to harvest and the rest don't get anything.the plants will eat the sulfur over time,but if you did want to spray em wait a week or more so the sulfur has time to work.if you leave them you'll be shocked how green n glossy they look in a week to 10 days ;)
 
#8
Tank, where on the plant is this occurring? If top, newest growth, then yes, we can consider a Ca-. It doesn't quite look like a classic Ca- to me, though.

Looks more like a K or P problem to me. Both can cause that type of necrosis moving from the leaf tip back in an irregular pattern.
 
#9
Its not on any new growth... only old growth. I checked checked the ph again last night. It had climbed to 6.3. I brought it back down to 5.6 so it can swing upwards again. Its just about every day that I have to adjust it down from 6.2-6.5....
 
#10
If it's old growth then it's more likely it's a mobile nutrient, not immobile. That pretty much rules out Ca, unless it's in such an imbalance that it's showing up as another deficiency.

You want I should post up The Charts?
 
#11
I'm most inclined to believe @WalterWhiteFire's suggestion that it may be ph issues... the night I did the burn, I screwed up while adjusting the ph, and dropped to like 4.3, and then the pump turned on and started flooding the table... I'm thinking that is what caused the damage: low ph water that got pumped into the table before I got the pump turned off... I'll be checking the girls for damage when thenlight turns on in half an hour....
 
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