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Magnesium
deficiency
Tom
Zabadal , MSU Horticulture |
| Home > Scouting guide> magnesium deficiency |
| A deficiency
of magnesium appears first on the basal leaves of shoots as a yellowing
between the veins. Some of the affected leaves will maintain a halo
of green on their margins, which confirms this nutritional deficiency.
Symptoms progress to dead blotches on the leaves, which may be a
rusty-red. These symptoms are often associated with high levels
of potassium (possibly from fertilization) in acid soils. Applying
dolomitic lime and/or magnesium foliar sprays may be a remedy. Leaf
petiole analysis can confirm this deficiency. |
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Early symptoms: green leaf margins with yellow
between the veins.
Photos: T. Zabadal |
Advanced
stage: yellow between the veins interspersed with brown or often
rust-colored areas. Photos: T. Zabadal |
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