27 jan 1840 ano - Phytophthora Infestans (Potato Blight)

Descrição:

Large outbreak of phtophthora caused a mass crop failure in ireland in the 1840s which killed a million people.

Causes:
stagnant water produces this mold which can rot the roots of a plant.

Treatment:
No treatment, but can be reduced by disturbing stagnant water and better irrigation.

History:

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