What kind of deficiency?

J

jack06041989

Active Member
Am at day 35 flower a lot of the leaves are going yellow and falling off. I used plant magic soil grow for veg and then plant magic soil bloom and pk boost at recommended doses on the bottle. It looks like nitrogen deficiency? I use plant magic soil too which hasn’t got much in it it, it relys on adding nutes. So would you say they are crying out for N now it’s used it all up from the veg feeds? Shall I add more veg boost ?
 

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hotrodharley

hotrodharley

Well-Known Member
Does appear nitrogen deficiency. However you want to address it. They do need some nitrogen all the way through to the end.
 
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Hydro Hippie

Member
Yep, you got it. Give them a little more nitrogen and they will green back up a bit. They are cannibalizing the lower leaves as a nitrogen source.

I have found over the years certain strains will need more N in flower than others. Some of the new research suggest that a higher ratio of N is needed in flower than previous thought.

I uses Jack's RO in veg and in flower. I do two weeks of Jack's 10-30-20 during transition. I also do a week and a half of Jack's Finish 7-15-30 before a week of flush. Every once in a while I will get a plant that wants even more N.

Here's a shot of my current grow 5x5 tent 6.5 week since 12/12.
 

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BongerChonger

BongerChonger

Well-Known Member
jack06041989 said:
Am at day 35 flower a lot of the leaves are going yellow and falling off. I used plant magic soil grow for veg and then plant magic soil bloom and pk boost at recommended doses on the bottle. It looks like nitrogen deficiency?
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Doesn't look like a typical nitrogen deficiency, looks more like lockout. I'd suggest not using any PK booster for now, if at all. PK booster is generally more appropriate towards the last few weeks of flower, too early now.
 
H

Hydro Hippie

Member
I would agree lock out or pH issues is a definite possibility.

It would be good to water them (with a low or 0 ppm and pH nutal water) to a good runoff (25%+). Then collect the runoff and measure the ppm and pH to know for sure. I test my runoff weekly through out the grow and adjust accordingly.
 
kod42

kod42

Well-Known Member
Hydro Hippie said:
Yep, you got it. Give them a little more nitrogen and they will green back up a bit. They are cannibalizing the lower leaves as a nitrogen source.

I have found over the years certain strains will need more N in flower than others. Some of the new research suggest that a higher ratio of N is needed in flower than previous thought.

I uses Jack's RO in veg and in flower. I do two weeks of Jack's 10-30-20 during transition. I also do a week and a half of Jack's Finish 7-15-30 before a week of flush. Every once in a while I will get a plant that wants even more N.

Here's a shot of my current grow 5x5 tent 6.5 week since 12/12.
Click to expand...
1 plant???
 
H

Hydro Hippie

Member
kod42 said:
They look good. The strains kinda blend in together looks like 1 huge plants from above lmao
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I agree they do blend together quite well. I generally don't run so many different strains in one tent. I like having different flavors but I can definitely get more yield with one strain.
 
P

Phytoplankton

Well-Known Member
To me it looks like an N deficiency, if you think it's a lockout, flush the plant with plain water, three times the volume of the pot, then go back to watering/feeding as normal. Otherwise just add some additional N.
 
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