Explain toxicity of micronutrients.

Toxicity of MicronutrientsIncrease in concentration of micronutrients causes toxicity.Any mineral ion concentration that reduces the dry weight of tissues by 10% is considered toxic.Toxicity of one element may lead to deficiency of other elements since the former may inhibit the uptake of latter.For example → Mn competes with Fe, Mg for uptake and also inhibits Ca translocation to shoot apex. Therefore, Mn toxicity symptoms are actually same as deficiency symptoms of Fe, Mg, and Ca.