(more) yellowing leaves

m3d1c1n3man

m3d1c1n3man

Well-Known Member
Some pics from my latest grow. SCROG 28 days in 12/12. Getting some yellowing in the middle. I'm thinking Nitrogen deficiency? Also there are some burnt tips, as if nute burn, so I'm not sure what's going on... i'm growing in soil and giving slow release organic plant food.

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crazyhazey

crazyhazey

Well-Known Member
looks like a lack of nitrogen, when problems like this arise i usually reference this. as for the tip burn, you could be overfeeding other nutrients, id give them a flush then a good dose of nitrogen.
 

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crazyhazey

crazyhazey

Well-Known Member
fangule gave a good suggestion, kelp and fish emulsion are pretty high in N, i use my own homemade worm castings. would be a good idea to start compost for your next run, saves a bunch of money and actually gives rotting fruit and vegetables a purpose, to be broken down and fed to your plants.
 
tekdc911

tekdc911

Well-Known Member
its in soil?
if so how long has it been in it
did you use dolomite in your mix ?
what are you giving for cal / mag ?
 
crazyhazey

crazyhazey

Well-Known Member
exactly, you could have yourself a heavy feeder, during mid flower they really start to feed. overwatering could also be contributing, those leaves do have a bit of a droop to them but it could be that you just watered as well. couldnt hurt to pH your runoff as well.

and glad to see another person who knows the power of superthrive and blackstrap molasses, props fangule.
 
DonAlejandroVega

DonAlejandroVega

Well-Known Member
N def presents from bottom up; this is diffuse yellowing. I don't like the size of that pot for such a large plant, I hate time-release ferts. I use totes, twice the size of that pot, for big plants.
 
m3d1c1n3man

m3d1c1n3man

Well-Known Member
DonAlejandroVega said:
N def presents from bottom up; this is diffuse yellowing. I don't like the size of that pot for such a large plant, I hate time-release ferts. I use totes, twice the size of that pot, for big plants.
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it's a 5 gallon bucket, with not much drainage like perlite so it's packed with nutes, i mixed a lot of that espoma into it. i don't see how i'm getting deficiency and severe burning at the same time, sometimes even on the same leaf! I think a good flush is in order as it hasn't been done in a couple months. could be salt build up and nute lockout possibly?
 
tekdc911

tekdc911

Well-Known Member
the food says its slow release
cal/mag will yellow too why i was asking
possibly ph
thats why i asked about the dolomite and soil age PH may have fell out
calcium may be locked out and taking the mag with it
and the burn maybe from the N
 
tekdc911

tekdc911

Well-Known Member
just my opinion brother
but id start with ph

** edit just to be perfectly clear so im not starting a flame war

im not saying a cal/mag feed will fix it
im saying i think it is a symptom of a PH problem and when its remedied the calcium will become available and then the mag can




BTW forgot the most important part ........................
that is a monster brother Good Job!!!!!
 
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