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Fotografia zilei – 21 decembrie 2021: Cum să deosebim Erwinia stewartii de deficiența de microelemente la porumb?

Cum să deosebim veștejirea bacteriană a porumbului (Erwinia stewartii) de carențele de microelemente în cultura porumbului?

Erwinia stewartii

Carența de cupru

Carența de fier

Carența de zinc

Carența de bor

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