Wattle

Boron deficiency in wattle

Symptoms of boron deficiency in wattle usually first appear on 2 year old trees during the dry season. The first signs are:

• Leaf chlorosis
• Cambial necrosis
• Drying and death of the growing point on the main shoot

The branches also die back. Defoliation and death then spreads steadily downward and inward from the apical growing points. If the rains start before the tree is dead there may be a partial recovery, but further attacks can be expected in subsequent dry seasons, and ultimately the tree dies.