Carencia o exceso de ferti?

El_argentino
El_argentinostarted grow question 4y ago
Indoor 3m x 3m Ph:5.9 ec: 0.5 Temp: 24c° Auto Lemon Haze, a single application with a biostimulant rich in organic nitrogen. Recommended dose 2.5 ml/L, applied 2ml in 3L of water. The plant turned a deep green but without burnt tips. Excess of something or low pH in the substrate.
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Leaves. Color · Yellow
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Ratch33
Ratch33answered grow question 4y ago
If the problem starts at the top of the plant it’s an immobile nutrient deficiency. If the problem starts at the bottom it’s a mobile nutrient deficiency. Immobile nutrients are often referred to as micro nutrients and mobile nutrients are sometimes referred to as macro nutrients. Light and heat over saturation can often be mistaken for deficiencies so be sure to check that off the list before making any drastic changes. Once you figure out where the issue is coming from you can address it. Many times immobile nutrient deficiency is due to improper VPD and not a lack of nutrient in the growing medium. Foliar feeding can be a great way of administering micro (immobile nutrients). Mobile / macro nutrients = Nitrogen, Phosphorus, Potassium (NPK) Immobile / micro nutrients = Calcium, Magnesium, Iron, Sulphur, Manganese, etc.
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El_argentino
El_argentinoanswered grow question 4y ago
@ratch33 I'm surprised by the strength of your response. I didn't have knowledge about VPD, and seeing temp 24 and humidity 35 (at the limit in VPD and maybe too much light is my problem since it was the smallest in the grow and wasn't that strong. I'll improve that since it's almost impossible to have a nutrient deficiency as the substrate still has nutrients since it's been 8 days of use by the plant and only a little bit of humic and fulvic acids were added through an organic bio-stimulant. I really appreciate your explanation and experience.
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