[97+] Cercospora Leaf Spot Azalea Téléchargement Gratuit
Azalea lacebug upper surface of leaves has a gray blanched or coarse stippled appearance. In april and may leaves and buds of infected plants develop distorted growth.
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Cercospora leaf spot azalea complet gratuit
Spots may become tan in the center and may have a yellow halo. Cercospora leaf spot is a fungal disease that affects crops ornamental plants shrubs and flowers. It begins as brown or purple spots on the leaves at or near the base of the plant.This disease causes unsightly spots on hydrangea leaves and contributes to the defoliation of plants. Azalea leaf rust caused by pucciniastrum vaccinii leaf rust usually occurs in midsummer with spots that start out small and yellow on the leaf surface while spore filled rust colored pustules. The circular spots are often small and scattered and usually measure 1 8 to 1 4 inches in diameter.
Spray undersides of the leaves with malathion dimethoate cygon or acephate orthene. Infected leaves may fall. Leaf gall leaf gall exobasidium vaccinii is a very common fungal disease in the early spring on azaleas and occasionally on rhododendrons.
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