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Yeallow stripes 3rd week of flower

Pucanz
Pucanzstarted grow question 4 years ago
The plants begin to show signs of lack of some nutrient, and I can't identify what it will be ... the leaves are gradually starting to turn yellow ... will it be lack of cal-mag? Or other nutrient? Can anyone help me? Please!!
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Leaves. Color - Yellow
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Organoman
Organomananswered grow question 4 years ago
Yes, I agree with gmslave, looks like a nitrogen deficiency to me. Try increasing your Bio-grow for a couple of feedings, this should help. ....Organoman.
Roberts
Robertsanswered grow question 4 years ago
If the yellow is from bottom up it is lack of nitrogen, but if its yellow across canopy starting at edges going inward on leaves, It is probably light burn. Light being too close or bright. From my experiences. Hopefully this helps. Cal mag deficiencies from my experience has been small brown spots on leaves. Honestly I think you are looking fine from pictures. Hap po y growing.
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MrGreenMan
MrGreenMananswered grow question 4 years ago
You can test the ec and ph of the soil... You should know this already if you’ve done any research into watering. Water with runoff and a good amount, at least 30% imo, and measure the ph and EC of the runoff. Will give you the closest idea of the state of the medium
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GMSgrows
GMSgrowsanswered grow question 4 years ago
Early yellowing of leaves is a nitrogen problem. Maybe underfed a little, maybe some lockout do to excess nutes in the medium or ph is going out of whack. Check your runoff ph and ec levels, if ph is high or low fix if ec is to low add more nute, to high then run some ph water to bring it back to acceptable levels. Cheers
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