Toxicity of Manganese in plants is often expressed by the appearance of brown spots surrounded by chlorotic veins and causes deficiency of:
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Correct answer: Iron, Magnesium, and Calcium
Manganese toxicity inhibits the uptake of Iron and Magnesium, and prevents Calcium translocation to the shoot apex. Thus, Mn toxicity symptoms are effectively a combination of Fe, Mg, and Ca deficiencies, appearing as brown spots surrounded by chlorotic veins.
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