Reprinted from compendium of blueberry and cranberry diseases 1995 american phytopathological society st. Overview of blueberry diseases annemiek schilder dept.
A bushy stunted blueberry shoots because of infection by blueberry stunt phytoplasma.
Blueberry bush diseases with pictures. Read about pest disease control for blueberry plants in this stark bros growing guide article. The disease has very obvious symptoms for which to watch. Paul minn a b figure 14.
Pacific northwest blueberry growers must identify and control a number of bacterial and fungal diseases in order to ensure the highest yields possible profitable yields. Stem blight of blueberry is especially dangerous on 1 to 2 year plants but it affects mature bushes as well. Blueberries with stem blight experience cane death which can result in the fatality of the plant if it is widespread.
Diseases no chemical control for either disease buy disease free nursery stock avoid pruning or mechanical damage when plant is active for stem blight prune diseased stems 68 inches below any sign of disease or discoloration and destroy them for stem canker remove diseased plants and destroy them. Blueberry is a crown forming woody perennial shrub in the family ericaceae grown for its fruits or berries of the same name. The stems or twigs are yellowgreen in color and turn reddish in winter.
Stunting of blueberry bush left because of blueberry stunt disease. Several diseases affect the highbush. Blueberry bush diseases result in smaller plants smaller yields and sometimes even death of the plants.
Since no variety is resistant to all blueberry bush diseases choose varieties with resistance to the most common diseases in the area. Blueberry production in michigan. The blueberry plant possesses oval or elliptical leaves which grow alternately on the stems.
11a photo by donald ramsdell. Highbush blueberry plants grow in a range of us. Disease once the plant is infected it continues to make galls usually a problem in planting beds but less so in the field facts about crown gall.
Incidents of infection are usually sporadic and preventative measures tend to work well. Department of agriculture plant hardiness zones with varieties split into southern and northern types. Table of contents blueberry fungal diseases blueberry leaf diseases blueberry stem diseases blueberry root diseases blueberry fungal.
Plant soil and microbial sciences michigan state university. Fortunately only a few of the diseases that occur on highbush blueberry in this region cause significant losses when left unchecked. Cultivate ideas and grow your knowledge.