Things Needed
Blueberries are pry for their nutritionary value and grown from Florida to Canada in both dwelling and commercial gardens . Horticulturalist Jeff Williamson of the University of Florida urges prevention as the best treatment for summertime folio spot disease . The first melody of disease defense is buying virus - free plants from a nursery that test its stock regularly . As well , combust all infected plants forthwith and verify aphids in blueberry fields .
Control Summer Blueberry Spots
Step 1
Pathogens responsible for blueberry bush disease include fungi , viruses , bacterium and nematode , consort to agriculture specialist George Kuepper and Steve Diver of the National Sustainable Agriculture Information Service . They send word nurseryman and growers to pick resistant cultivar and add constitutive matter to the soil to increase the amount of beneficial fungi , bacteria , amoebas , protozoan , nematode , arthropod and wiggler . These nourish potent , healthy blueberry bush bushes better capable to fight diseases .
Step 2
Prune bushes right after the blueberries are harvested and keep the patch clear of plant debris , which can harbor disease carrier . take away the debris and burn , bury or drag it to a landfill .
Step 3
Prevent fungal infection by spraying with antifungal agent through the autumn to prevent diseases like Septoria , powdery mildew , Gleosporium , Dothichiza and rust fungus , advise Florida ’s Dr. Williamson . This guarantee sound leaf well into fall , which create food for the wintertime to fuel outpouring growth and strong industrial plant that dissent disease . Check with your local university ’s farming extension billet for the fungicide expert for your area .
Treat Viruses
Check blueberries for virus . Twisted or curve leave streaked with red in mid - summer are the signal of the shoestring virus . Aphids diffuse the virus . Prevent infection by starting to ground - nebulizer for aphids in mid - June . Repeat in two - week time interval .
name the necrotic ( baccy ) ringspot computer virus from the little brown dry out circles on older leaves . slay septic bushes , including roots . Then treat the soil with grunge fumigants in the autumn . mould the ground for a year before replanting with intelligent stock .
Burn blueberry plant and leaf debris infected with ruby-red ringspot computer virus , which creates reddish brown spots with a light-green center on folio surface in late summertime and gloaming . ( Powdery mildew spots are standardized in visual aspect but bottom through the folio and are due to a fungus . )
Tip
A symptomatic tool ( see Resources ) from Cornell University has a step - by - whole tone practice session to describe what disease your blueberry may have .
Warning
fire all infected scrub and plant debris to eliminate spore , virus and other disease carriers from reinfecting your blueberry plant .
