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  1. Plant Deficiencies
    Hi there, I would like to ask about Estimative Index (EI) method. I experienced holes in leafs as shown on the image: I found out, that such holes are caused by missing potassium. EI system has macro-element (KNO3, KH2PO4 and K2SO4) and micro-element part. Do you think, that I can increase...
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