Can this be Nitrogen Deficiency?

ShinKicker

ShinKicker

Member
So my seedlings are about 18 days old now. I've had some issues before with over watering and drainage. But I'd recently fixed it, but now it seems that one of my 2 plants has some Nitrogen deficiency issues. Its new leafs look they have some yellow on its tips. Am I right? and is this Nitrogen deficiency?
 

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az2000

Well-Known Member
I think the bottom leaf isn't getting enough light. They die off as the plant sacrifices maintaining them for little return. They look very good to me. I wouldn't worry about anything yet. The yellow tip might be a concern. Sometimes new growth is pale and will green up as it matures.

What are you feeding? How much?

I don't see N def. If you added N you'd probably get N toxicity.
 
GreenThumbsMcgee

GreenThumbsMcgee

Well-Known Member
what kind of soil? if it was miracle grow, or something like it, overwatering/flushing can actually UP the amount of preloaded nutrients readily available to the plant, especially N, to toxic levels, sometimes even creating a worse lockout situation...
just sounded simular to issues I have had using unfit soil for the job at hand, and all just to save a buck, i've learned the hard way its worth it to do it right the 1st time!
 
ShinKicker

ShinKicker

Member
I am suing Pro Mix seeding soil and I recently started feeding last Monday using FoxFarm Grow Big liquid fertilizer 6-4-4. I mixed it in a 3 teaspoons of the Grow Big into 1 gallon of distilled water and water it until I get about 20% run off, I also have them in pretty small containers. And I'm using 4 23W CFL
 
ShinKicker

ShinKicker

Member
az2000 said:
I think the bottom leaf isn't getting enough light. They die off as the plant sacrifices maintaining them for little return. They look very good to me. I wouldn't worry about anything yet. The yellow tip might be a concern. Sometimes new growth is pale and will green up as it matures.

What are you feeding? How much?

I don't see N def. If you added N you'd probably get N toxicity.
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So I recently started feeding last Monday using FoxFarm Grow Big liquid fertilizer 6-4-4. I mixed it in 3 teaspoons of the Grow Big into 1 gallon of distilled water and water it until I get about 20% run off, I also have them in pretty small containers. And I'm using 4 23W CFL 6500k total of 6000 lumens.
 
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az2000

Well-Known Member
Distilled water has no minerals in it. People usually add calmag to return some basic minerals. You may have ca/mg def eventually. I mix tap and pure water to get 150ppm starting. If you can do that you don't need calmag. It's calcium nitrate acidifies the mix and then you have to use ph-up, adding salts. (You can also add gypsum and epsom salt to pure water to return some ca/mg/s to the water. That avoids calmag's problems.).
 
redeyedfrog

redeyedfrog

Well-Known Member
The colour of the plant and burned tips totally indicate whether you have too much n or not, that's a proven fact
 
ShinKicker

ShinKicker

Member
az2000 said:
Distilled water has no minerals in it. People usually add calmag to return some basic minerals. You may have ca/mg def eventually. I mix tap and pure water to get 150ppm starting. If you can do that you don't need calmag. It's calcium nitrate acidifies the mix and then you have to use ph-up, adding salts. (You can also add gypsum and epsom salt to pure water to return some ca/mg/s to the water. That avoids calmag's problems.).
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Ok, I'll try adding epsom salt to the distilled water. Thanks.
 
Kevin McCallister

Kevin McCallister

Member
Here's some great advice. Pick up some physan 20. It's a fungicide that you use as a floral spray. It drys and converts to nitrogen that's plants can absorb. I use it for most leaf disorders and discoloration and swear by it. I flush with it too.
 
Cl@rksville

Cl@rksville

Well-Known Member
Theres nothing wrong with it just don't go mad on feeding, think of the advice 'less is more' because underfeeding causes problems that are easier to fix, I have been growing different mothers in soil for over 25 years and some of them have gone a month without feed! I can kill one in a day by overfeeding... my advice is leave it until next watering and do not add any extra feed, simple!
 
tropicalcannabispatient

tropicalcannabispatient

Well-Known Member
What i meant to say is that Potassium, zink,iron,chlorine and nute burn start from tips, n deficiency starts from bottom and works its way up, n excess can show on tips as the "claw" with dark green foliage, but not with burned tips.
 
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ShinKicker

ShinKicker

Member
So since my last update pictures the first set of true leaves on my plants have not gotten any better. Instead, I can now see that the edges are now starting to brow a little. I am considering moving them into a bigger pot and flushing them. Also, I was considering just cutting off them altogether.
 

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Yekke

Yekke

Well-Known Member
Raise your lights at least 15cm up, you'r plants are heat stressed and over-compact. Once you flower them this structure will not yield too well as branches will be too close together.
I aim for a 1-3cm internode length.
Do not fertilize your plants and do not flush them.
 
ShinKicker

ShinKicker

Member
Yekke said:
Raise your lights at least 15cm up, you'r plants are heat stressed and over-compact. Once you flower them this structure will not yield too well as branches will be too close together.
I aim for a 1-3cm internode length.
Do not fertilize your plants and do not flush them.
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Heat stressed huh? I always thought that my lights needed to be close to my plants about 4-5 inches because I'm using CFLs. I'll try and move them up a bit and see what happens.
 
Jimdamick

Jimdamick

Well-Known Member
ShinKicker said:
So my seedlings are about 18 days old now. I've had some issues before with over watering and drainage. But I'd recently fixed it, but now it seems that one of my 2 plants has some Nitrogen deficiency issues. Its new leafs look they have some yellow on its tips. Am I right? and is this Nitrogen deficiency?
Click to expand...
Lower leaf is natural die-off. Plant looks good. Buy a PPM meter, keep it at 700 PPM, PH your water to 6.3, and all will be good.
 
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