yellowing for what seems no reason....

Hey all. Just got home from work today, and I find that my best looking plant (white rhino)is now yellowing and dying in regards to the lowest leaves. 3 1/2 weeks old, my ph meter says about 6.8 - 7, and only nutes I've added is only like 3 pinches of blood meal kinda raked into the top inch of soil. Checked for mites, didn't see any (although my bag seed plant does have like a pen tip sized hole along with yellowing so I will keep looking for those little bastards to be sure). But what else could it be? The ph for soil is supposed to be about 6.8, right? And I didnt add nearly enough nutes to burn it, nor do I water too frequent for the scott's potting soil's nutes to really burn it(since soil nutes are released when watered). I'm mean, could it be some kinda buildup of sorts, or deficiency? temps stay between 75 - 85(at most), but I dont have a humidity reader yet. I'm so frustrated over this. Any suggestions?

p.s. - it's also the plant in my avatar. and here is a vid from a few days ago, showing what Im working with: http://www.youtube.com/watch?v=vZezkbA_Pn4

bumpity bump

did you maybe get some nuted water on it?!?..you cant see mites by the eye!,you need a scope of some sort!..if u think it might be mites give them a little spray with some neem oil just to be safe!

nope... no nutes on them. I just watered them with a fish emulsion/water mix like 5 min. ago(low in nutes to not overdo it in case deficiency isn't the prob, but giving supplement none the less). I hope I see a positive change in like 12 hours, or at least just the yelllowing and necrosis to have stopped.

That my friend is over feeding (nute burn).. Either the soil already had nutes in it or is it possible someone else is feeding it?

Re-pot into new soil (fox farm ocean forrest is recommended) and light watering..

No way around it, thats classic nute burn imo

reefcouple said:

That my friend is over feeding (nute burn).. Either the soil already had nutes in it or is it possible someone else is feeding it?

Re-pot into new soil (fox farm ocean forrest is recommended) and light watering..

No way around it, thats classic nute burn imo

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Ya think? Cause it's been in that soil for 3 weeks, and I water at least once a week if not twice, depending on needs. Shouldn't it have shown up before now? And I know noone else is feeding it. Not trying to discredit or call bull, but shouldn't it have shown up before now if it were nute burn, especially the first 2 weeks when it was smaller and would have been more easily burnt by the soils nutes?

Here is the soil in use(with added perlite of course): http://www.scotts.com/smg/catalog/productTemplate.jsp?proId=prod70366

nute burn was gunna be my second guess..

Not nutrient burn... Nitrogen deficiency. Nutrient burn means burns on the tips and edges of growth (usually new growth). Nitrogen deficiency means the lower growth turns yellow and starts to die. I could be wrong because I can't see all of the plant, but every time I've had that it's been nitrogen deficiency (especially on clones) due to lack of nutrients.

Nevermind, I just took another look at it closer and it's not Nitrogen deficient. It might be Potassium but more than likely it's Magnesium.

Redeflect said:

Not nutrient burn... Nitrogen deficiency. Nutrient burn means burns on the tips and edges of growth (usually new growth). Nitrogen deficiency means the lower growth turns yellow and starts to die. I could be wrong because I can't see all of the plant, but every time I've had that it's been nitrogen deficiency (especially on clones) due to lack of nutrients.

Click to expand...

pretty sure this dudes right with the nitro def.

Unfortunately, I wasn't right. Nitrogen deficiency would just make the leaves look yellow with death at the ends. The leaves turn noticably neon yellow rather than green. This is more of a dried out brown/yellow. It's definitely not nutrient burn because it's on the lower growth. It's hard to tell, the best advice I can give is to give it some sort of micronutrients and it'll probably be one of them. I don't think it's one of the macronutrients (nitrogen, phosphorus, potassium)

Hey, thanx all for the input. I kinda was leaning towards NOT being burn, since like I said I didn't feed anything put pinches of blood meal. And I would have imagined that the soil would have burnt it earlier on, IF it was gonna burn it. I added Alaska fish emulsion yesterday which does have macro and micro, so we'll see what happened when I get home from work today(really hoping the problem stopped). Once again, thanx all!!! I will keep people abreast.....

Well, came home from work today after adding the fish emulsion last night, and I am happy to say that we seem to be right back on track. No new necrosis or yellowing at all, and all the little new branch sprouts near the stem(almost every last one) have grown out into full little branches. All new growth is a nice, beautiful solid green as well. Thanx again to all who gave input. Plus rep for all!!

yea that is definitely either mg or phosphorus def. your ph is too high, drop to atleast 6.5. I would flush with like 6.4 or 6.3, flush a lot and then give like three quarter normal nuts with 6.5 PH.

^apparently he is a little slow on the uptake^

Problem solved... and advice was pretty off anyway.

Glad to hear they're doing well Mayhem.

yea glad its doing good But I think someone isn't watching out for your best interests...(above statment) apparently.. so ya..... like I said, 6.5 would be best.. Hope it goes well

It wasn't a PH problem, he already had PH in right the range because as long as it's not above 7 it'll be fine. Some plants like very high and others like very low... and so as I said a micronutrient problem (which already fixed it). Piss off next time before you criticize and give wrong advice.

just an update: already affected leaves continue to die with no other leaves showing issues. Also showed first preflowers today! switching to 12/12 tonight.....
https://www.rollitup.org/members/mayhem8324-albums-wr1-white-rhino-bagseed-picture116591-03-28-2010-first-preflower.jpg