An avocado that’s ready to eat has light green flesh. avocado root rot ‐ Fumigate small spots of disease. ‐ Fungicides. Avocado, Persea americana, is an evergreen tree in the family Lauraceae which grown for its nutritious fruit, the avocado.The avocado tree is large and dome shaped with oval or elliptical leaves arranged in a spiral on the tips of branches. Even strong, healthy trees can fall victim to severe weather, disease, or infestation. It is characterized by a sudden wilt of the tree. Read on for a more in-depth discussion of this chronic disease of avocados. Give your tree a spray of 30g Mancozeb, 4.5 litres water & 30ml of a good wetting agent. Common symptoms of disease include:Leaves: small leaves that are pale green, yellowed, blotched or blackened. Few leaves or excessive leaf fall. What is Avocado Cercospora Spot? The wetting agent is the key. Between homemade smoothies, skin care, and good old-fashioned guacamole, who doesn't love a fresh, ripe avocado? Once you cut an avocado, it’s easier to determine whether it has gone bad. Contact a pest control adviser about soil fumigation. Of course, this is only an option after you buy it. I'd spread a lot of gypsum around your avocado tree, say 4 handfulls / sq m. We used to call them 'oil spots'. Avocado cercospora spot is a common and frustrating fungus that thrives on the tissues of avocado trees. poor color. Avocado trees affected by this usually lack small roots or have small roots that are black. The health of your tree can and often does have a huge Here's what the brown spots, bruises, and stringy black lines on your avocado flesh mean — and whether it's still okay to eat: ( Courtesy Food52.com ) Oxidation Avocado tree shoots die back from the tips, and eventually the tree is reduced to a bare framework of dying branches. The leaves have a red pigmentation when they … Avocados normally get black spots on their young branches, but it is not a problem. If yours are dying back, it might be because of some disease that I’m unfamiliar with. Could it be avocado black spot, more commonly known as cercospora spot in avocados? The leaves turn brown and remain on the tree. Cotton Root Rot (fungus – Phymatotrichopsis omnivora) : Although avocado is susceptible to cotton rot root, it is not a common disease. Small branches die back at top of tree. It’s possible that your climate in Kenya is conducive to it whereas our drier climate in California isn’t. Very young trees tend to become diseased, rather than old ones. You can prevent this pathogen by planting your avocado tree in well-drained sites. Leaves may turn brown but hang on the branches for months. As much as we all wish that avocado trees could be a plant it, forget it, and harvest affair, caring for your tree requires consistency and vigilance. 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