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Apple Common Pests and Diseases and Management

Apple Common Pests and Diseases and Management
Apple Common Pests and Diseases and Management

Apple

 

Apple, Malus domestica, is a deciduous tree in the family Rosaceae which is grown for its fruits, known as apples. Apple fruits are one of the most widely cultivated fruits in the world, are round (pome) in shape and range in color from green to red. When planted from a seed, an apple tree can take six to ten years to mature and produce fruit of its own. Apple trees are small to medium sized trees reaching heights of 5–10 m (16.4–32.8 ft), with a central trunk which divides into several branches. The leaves of the tree are oval in shape and can reach up to 13 cm (5.1 in) in length and 7 cm (2.8 in) in width. Apple may also be referred to as mela or appel and the domestic tree is believed to have originated from Western Asia and the Mediterranean from several wild ancestors.

Uses

Apples are most commonly eaten fresh but can also be used for baking and cooking. Apples can also be processed into apple sauce, cider, vinegar, juice or butter while slices can be dried for later consumption. Apples can also be used for the extraction of useful compounds such as fructose and pectin

Symptoms

Yellow or chlorotic spots on leaves; dark olive green spots on leaves and fruit; may be a velvety growth on spots on undersides of leaves; twisting of leaves; distorted leaves; severely infected leaves turn yellow and drop from tree.

Cause

Fungus

Comments

Fungus overwinters on dead foliage on ground; spores dispersed by wind; high moisture encourages fungal growth.

Management

Remove all leaves dropped from tree in the fall and compost to prevent any diseases surviving in debris; application of zinc and fertilizer grade urea in the Fall may be necessary to speed leaf drop, lime should then be added to fallen leaves; fungicide application may be necessary in areas where leaves remain wet for periods in excess of 9 hours; fungicides such as copper soaps and Bordeaux mixture should be applied if there is a chance of wet period as soon as leaf tips emerge.

call on 7428208822  9 to 7 

 

 

Posted 2 years ago

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