{Ananas comosus}
Pineapple Cannonballs and Corking

Spotting a Boron Deficiency

Boron-deficient fruit on the left, resembling "cannonballs."

Boron Deficiency in Pineapple

Boron deficiency may cause abnormal development of the fruit. Few leaf symptoms have been reported. The fruitlets split and separate, and the cracks fill with gum. In very severe boron-deficiency cases, the growing point may die, followed by profuse development of side shoots and suckers. Root growth is poor. Main roots may be brown and few fibrous roots are produced. The deficiency is more pronounced on the ratoon than on the plant crop.

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 6-13 6-13
KG/HA 6.75 - 14.63 6.75 - 14.63

Foliar Application (Suggested rates of application)

KG/HA 4.5 - 10.125

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