Limit overhead irrigation, as wet leaves encourage disease. Rust is common in the fall months. Blueberry Leaf Rust; Botrytis Blight and Fruit Rot; Crown Gall; Godronia Canker; Mummy Berry; Phomopsis Canker; Root and Crown Rot; Silver Leaf; Sooty Blotch; Viruses. Select rust-resistant plant varieties when available. program! Check the label of any pesticide referenced to ensure your use is included. The traditional method is spraying with a fungicide (there are some that are organic) but it doesn't work as well as a proper … endstream endobj startxref The fungus has a wide host range including species of Vaccinium spp. You can avoid blueberry diseases by giving your plants the conditions they need to remain healthy. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Pages 20-22 in: Compendium of Blueberry and Cranberry Diseases. Cultural practices such as removal of diseased leaves and proper plant spacing to maximize air circulation provide the best control. Prune out and burn infected canes. Rust is spread by spores that are transferred from infected plants to healthy plants. Strip leaves from primocanes before tying. A blueberry with iron deficiency has yellowing leaves with dark green veins, the new growth will be affected by this first. What is blueberry rust? Work the soil for a year before replanting with healthy stock. That shouldn't harm the berries, to treat the leaf rust you can use an aerated compost tea to spray over the whole plant and the surrounding soil. These pustules spread to all areas of foliage and sometimes down the stem. Small yellow pin head sized spots on the upper leaf surface. Overview Information Blueberry is a plant. Battling blueberry leaf rust Leaf rust is one of the most damaging leaf diseases in lowbush blueberries. The new publication is PNW 656 "Blueberry Cultivars for the Pacific Northwest" Another reference is EC 1304 Growing Blueberries in Your Home Garden" Oregon State Extension. For management, a recommendation to remove hemlock trees within a half mile may neither be desirable or practical. Abound does not have rust listed on its label and the labels of Pristine and Cabrio list “suppression” of rusts only, which indicates that they are only moderately effective against rust. Post-season leaf spot management will still be important and a fungicide application should be considered to prevent premature defoliation due to rust, Septoria, and anthracnose leaf spots. Creates postules or markings on the leaves that often look like iron oxide (rust) and often causes leaves to twist or distort. However, all of these fungicides can be sprayed after harvest provided that the maximum number of sprays per season is not exceeded. You will also … Now, before you run off and bury iron nails next to your blueberry bushes one of the biggest culprits of this problem isn't that the soil doesn't have enough iron, but that the plants can't use the iron in the soil. Although blueberry bushes are disease resistant, some pathogens can infect them. Drip irrigation and soaker hoses can be used to help keep leaves dry. Cracking and drying of canes and spotting and drying of leaves result. The fruit is commonly eaten as a food. Annemiek Schilder, Michigan State University Extension, Department of Plant Pathology - 1995. You have to wait three years before planting in the infected area again. Other things that can be done: limit overhead irrigation to reduce leaf wetness and apply effective fungicides during periods of high risk (usually starting before or shortly after harvest). The disease has been reported in Asia, Argentina, Australia, Canada, Europe, Mexico and the United States. Rust disease is caused by a fungal parasite that needs living plants to survive. Apply a good fungicide for protection. Blueberry Mosaic; Blueberry Scorch; Blueberry Shock; Premature Fruit Drop; Abiotic Disorders; … Preventing blueberry rust infection is a key to limiting the spread of this disease. �L�z�,W [������TbXJ*�/y��Z.���J�U�V)• ��8S*Y�'���p���^m%cm�Ť��J6��WZ��J�����-}Օ��&�mU����m�v���bX��ŪK�攮�uY��V�f� Jr�)dfY�i�|wZ-A���᲍=āb*Q��3ѕ]��P�(��.b-P� ����0n�T�-��Վ2Ƹ��n�u˸Y����9��?�-�|��T\*��T�[W!�0 � � Best control for Rust, Shot Hole and Curly Leaf is a copper spray (copper hydroxide or copper oxychloride) at leaf drop and at mid dormancy. It is best to plant 2-3 types of blueberry with the same bloom time. This disease affects the leaves of blueberry, manifested in the form of round spots. Blueberry spot characteristics are as varied as the diseases that cause them. If any of your blueberries grow galls, pull them up. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture.