{Chrysanthemum spp.}

Spotting a Boron Deficiency

Malformed petals due to quilling, a common symptom of boron deficiency.

Spotting a Boron Deficiency

Two small, quilled florets on the right.

Boron Deficiency in Chrysanthemum

In mild cases of boron deficiency, the petals fail to unroll properly and become “quilled." When the deficiency is severe, symptoms will also be seen in the leaves which will be brittle and closely spaced. Some down-curling of the leaves may occur and leaf tips may become chlorotic. There may be some loss of flower color. When the deficiency is acute, the buds fail to open properly and the death of the growing point will be followed by multiple shoot formation.

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 3-13 3-13
KG/HA 3.38 - 14.63 3.38 - 14.63

Foliar Application (Suggested rates of application)

KG/HA 2.25 - 2.25

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