Nitrogen deficiency?
- Thread starter yousay
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NightbirdX
Well-Known Member
In pic 1 it looks like N def, but in pic 2 it looks like the bottoms have N def, but the middle has nute burn. How have you been feeding your plants? What is your regimen? Have you made any changes of late that might have caused the problem?
:K. I transplanted from seedling soil about a week ago. I have watered twice in a week .
woodsmaneh!
Well-Known Member
No don't feed them anything and only water when the top soil is dry. It looks more like nutrient burn than lack of N. Give it a chance and if the soil has some food in it don't feed it anything but water for the next couple weeks and all should be good. Nothing wrong with MG.
usually if the bottom leaves yellow then it works it's way up it's a watering problem..too much/or little...you say u watered twice in a week??..that could be the reason..i would ajust the watering to once a week only when soil is dry when u stick your finger in it an inch or two..miracle gro is good stuff i know alot of people don't care for it but it works when u learn to use it right..the nutes are very strong so be careful..use 1/4 of what the box says to start and work your way up ..also check the ph of your water..6.8-7.0 is fine..growing in soil...
gantsa
Well-Known Member
You are right. Looking closer you see a burn spot. But if he dont feed them anything then it could be N deficiency in this age.
Does the soil you used contains already N inside? For some strains, starting with ALL MIX soil is too strong for the young plantsa and it burns a litttle.
My plants continue to get worse. I did water them yesterday because they were very dry and they perked up but the yellow keeps on getting worse. Think it could still be a nitrogen deficiency although the soil is supplemented with it. Should I look into a fertalizer? What do you suggest? Also, my plants are going on 1 month old. Why you you figure they are so dense and bushy?
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SecretiveOne
Member
If the bottom leaves yellow first then it spreads upward, With droopy leaves and slow growth- it is a sign of soggy over-watered soil. Under-watered soil leaves droop but don't turn yellow. From what you say your plants are not over-watered. So i would suspect that it is nute burn. Personally i would transplant them into a soil with NO nutes in it and flush the soil. If you don't want to transplant yet, just flush the soil out really good letting water drain out the bottom. Wait a few days until the soil drys out then do it again.
Also the plants are short and bushy without much spacing in between internodes because you are using 6500k cfls (or 4000k but probably 6500k). Also because you have the light close which is preventing the plants from stretching (this is good). Those cfls are the right spectrum for the veg stage. If you plan on using cfl's for flower also, i would recommend switching to 2700k bulbs which have more of the red spectrum. (Red cfls cause plants to strectch compared to the blue you have now). Or you could just mix half and half which is the best option and will cost you less instead of replacing all the bulbs.
6500k aka cool white
4000k aka daylight (i believe) -stay away from these for growing!
2700k aka warm white ( has a orangeish-yellow glow to it)
Dense and bushy is good because the lower growth will get good lighting as well. I would even train the plants by bending the top over so the main stalk is horizontal, but wouldn't do this until after transplant. This way all the colas will grow upward equally and all will turn out the same size. Training this way is much better than pruning or topping because there is no recovery time for the plants.
Good luck.
Also the plants are short and bushy without much spacing in between internodes because you are using 6500k cfls (or 4000k but probably 6500k). Also because you have the light close which is preventing the plants from stretching (this is good). Those cfls are the right spectrum for the veg stage. If you plan on using cfl's for flower also, i would recommend switching to 2700k bulbs which have more of the red spectrum. (Red cfls cause plants to strectch compared to the blue you have now). Or you could just mix half and half which is the best option and will cost you less instead of replacing all the bulbs.
6500k aka cool white
4000k aka daylight (i believe) -stay away from these for growing!
2700k aka warm white ( has a orangeish-yellow glow to it)
Dense and bushy is good because the lower growth will get good lighting as well. I would even train the plants by bending the top over so the main stalk is horizontal, but wouldn't do this until after transplant. This way all the colas will grow upward equally and all will turn out the same size. Training this way is much better than pruning or topping because there is no recovery time for the plants.
Good luck.