Nitrogen Deficiency?

[purpleskunk777]

Hi all,
My plant is in week 3-4 of flowering and i've been seeing significant yellowing throughout the plant (lower, upper, middle nodes). the yellowing was primarily localized to the fan leaves (which are almost completely gone now due to this) and is now moving to the bud sites. I tried foliar feeding miracle grow all purpose to the fan leaves along with liquid karma at 72 deg. ambient temp. (maximize absorption b/c stomas are primarily open during this temp.)
Also, i should add that i recently transplanted from 1 gal to 3 gal pots 3 days ago. let me know what you think! thanks!

Soil = Scotts Premium Potting soil (contains timed release nutes)
Indoor
Additives = Liquid Karma
Runoff pH = unknown
Use pHâ??d tap water
Age of plant 3-4 months
Lighting source = 400W HPS 16+ inches above canopy
Air temperature = 68-80
Air % Relative humidity = 40-60%
Lighting schedule = 12/12
Type of ventilation = 170 cfm/carbon filter from htg supply

purpleskunk777 Reviewed by purpleskunk777 on 09-19-2010. Nitrogen Deficiency? Hi all, My plant is in week 3-4 of flowering and i've been seeing significant yellowing throughout the plant (lower, upper, middle nodes). the yellowing was primarily localized to the fan leaves (which are almost completely gone now due to this) and is now moving to the bud sites. I tried foliar feeding miracle grow all purpose to the fan leaves along with liquid karma at 72 deg. ambient temp. (maximize absorption b/c stomas are primarily open during this temp.) Also, i should add that i Rating: 5

[bobjob4u]

A pic. would help. Scotts premium will work great. It is buffered so ph stays around 6.8. But after some time it loses it buffered ph. Also no need to feed much in that soil. It has nutes already.I used it for years before going to another product. It will work if you take it easy with nutes. Its hard to say witout pic or more info. I think folar feeding can burn plants aswell.

[purpleskunk777]

here are some pics...the yellowing started a while back and seemed to get slightly better when i added some MG all purpose @ rusty's suggested strength. i recently foliar fed MG (as stated above) but am hesitant to add anything else to the soil b/c scotts has some timed release in it as bobjob suggested and don't want to burn the plant. help please!!

[bobjob4u]

To be honest i cant give a straight answer. I have never had any look like that. I am not a big fan of folar feeding. What did rusty say? He is the man to ask. When was the last time you feed through soil? Also I would start by checking the ph. Get a ph pen at your lawn and garden center.Your soil been around 3-4 month. That is the life span for that soil. Nute should be used up and ph could be starting to waver on you. If you can when you pot is dry .Water with proper water till constistanly moist. Try to catch the run of water and get the ph of that. If that is good then i would give it them some nute. Thats if you havent over feed them. Maybe somone else could jump in and help..:thumbsup:

[bobjob4u]

try this link maybe this can help

Cannabis Plant and Pest Problem Solver - Pictorial - 420 Magazine

[purpleskunk777]

Rusty what do u think?!?? help me like you did with my other plants lol

[purpleskunk777]

Bob-
I've been giving them plenty of nutes. gave them some super-thrive yesterday evening as well. since i transplanted them 5 days ago i've been taking it easy on the nutes as scotts premium already contains plenty of ferts. (timed-release too).

btw where'd you get your figure of 6.8 as the buffered pH for scotts premium? experience? read it elsewhere?
thanks,
-purp

[bobjob4u]

Cause every time i used it my ph pen average 6.8 .somtimes a bit lower 6.5 . So 5 years of experience.

[purpleskunk777]

awesome...i was looking everywhere for that info. but couldn't find it (pH of soil). glad to have so many experienced ppl here to help me out...

[purpleskunk777]

the problem has gotten much, much worse. I'm afraid I screwed up big and the plant's going to die. please help someone!!
Runoff = 6.0 in, 6.0 out with Gen. Hydroponics pH test kit...
Changes i made today:
-mixed in some dolomite lime (about 2 tsp to 2/3 pots) with the top layer of soil.
-watered (6.5 ph) water with 1/4 tsp of grandma's unsulphured molasses in hopes of making Nitrogen in soil more available to plant, as nitrogen seems to be locked out for some reason other than pH (can't be locked out at 6.0)
again, any suggestions would be greatly appreciated!
-not adding any nutrients to soil for a several weeks because there is supposed to be some in the soil i transplanted in 2 weeks ago. perhaps i should try adding nutrients?