Agriculture Reference
In-Depth Information
Calcium (Ca) Excess
Symptoms.
Excess C does not produce visual symptoms but can trig-
ger phosphorus deficiency.
Treatment.
Avoid excessive Ca applications.
Magnesium (Mg) Excess
Symptoms.
Excess Mg can hinder Ca uptake and make Ca deficiency
symptoms more prevalent when soil Ca supplies are low.
Treatment.
Avoid use of dolomitic limestone or other Mg-containing
materials when soil Mg concentrations are high.
Boron (B) Excess
Symptoms.
Symptoms of excess B are similar to deficiency symptoms.
Leaves may show yellowing (chlorosis) along the midrib, and shoots
may defoliate early, beginning at the tips. Fruits may crack and drop
early.
Treatment.
Avoid excessive applications of boron-containing materi-
als.
Copper (Cu) Excess
Symptoms.
Excess copper may damage or kill roots and can trigger
symptoms of other micronutrient imbalances.
