My Almond Tree Is Wilting

Identification

• Almond tree is susceptible to Verticillium wilt, caused by Verticillium dahliae. The soil-borne fungus persists in soil, debris and the trunk of infected trees. Three- or four-year-old trees are more prone to the disease.

Damage

• The disease is characterized by yellowing and wilting of branches and foliage on one side of the tree. As fungus spreads in the tree, affected tree areas start to dry and die. The dead and wilted foliage remains attached to tree all through the growing season. Cross sectional cuts in heartwood reveal dark discoloration.

Control

• Prepare the site well before planting, removing any old roots in the ground. Solarize soil prior to planting to reduce chances of disease. Soil fumigation is also effective in minimizing disease occurrence. Recommended fungicides include methyl bromide.