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Cal mag or pest ?

Reefaboistarted grow question 5y ago

Begin to spray on the upper leaves, dont know if it's a deficiency or a pest like rust

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Gelato93weedanswered grow question 5y ago

Difficilmente la ruggine viene nei box solo se che troppa umidità, la ruggine viene quando la foglia rimane bagnata, per sicurezza farei un fungicida a largo spettro bio per le rose di solito e il migliore, per i parassiti di solito e meglio girare la foglia per capire. Fai una foto della foglia girata

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