ROSE BLACKSPOT 
_ A three-in-one spray such as ‘‘Triogen’” will control both 
Insects and diseases. Or, dusting sulfur plus 10% lead 
arsenate may be used; one form is known as Massey’s dust, 
This dust is improved by adding 10% Fermate. Spray or dust 
once a week or oftener. 
Sunscald 
Sunscald is a type of winter injury that appears as cankers 
on the south or southwest side of trunk or limbs. Anything 
that will keep the sun from shining directly on the trees during 
the winter will help to prevent sunscald. Wrap the trunk 
and lower main limbs with aluminum foil. (Such as is used 
in frozen food storage.) 
Dandelions 
Apply 2, 4-D spray (as directed by manufacturer) in the 
morning of a clear day when the temperature is above 70 
degrees F. One application early in the season should keep 
the lawn relatively free for the remainder of the season. Later 
sprays may be applied if necessary. (Warning—keep away from 
garden plants and shrubbery.) 
CRABGRASS (in lawns) 
Use crabgrass killers containing phenyl mercuric acetate (PMA) 
sold under various brand names. Apply as directed by manu- 
facturer (usually 2 fluid ounces in 2% gallons of water per 
1,000 square feet of lawn—for the 10% liquid forms). Use 
at least two applications; the first when the crabgrass seedlings 
first appear (late June or early July); the second seven to ten 
days later. 
Moles, Rats 
Write for leaflets on control—Bulletin Room, University 
Farm, St. Paul 1, Minn. 
Pocket Gophers 
Cut potatoes or carrots into %%4-inch pieces. Dust lightly 
with mixture of % ounce sodium bicarbonate, % ounce pow- 
dered strychnia alkaloid, 1/80 ounce saccharine. Place poisoned 
pieces in runways being careful to exclude all light.—Write for 
Folder 75, Pocket Gopher Control—Bulletin Room, University 
Farm, St. Paul 1, Minn: 
Rabbits 
Wrap the trunk and lower main limbs of young trees with 
aluminum foil. (Such as is used in frozen food storage.) Com- 
mercially prepared repellent paints and sprays are fairly effective 
when applied to the trunks and main branches of trees, 
Mice 
Protectors made of %4 or 1/3 inch mesh galvanized wire placed 
around trunk of orchard trees at base will help prevent girdling 
by mice and rabbits. Remove weeds and grass from base of 
trees and mound earth around trunk. Write to Horticultural So- 
ciety, University Farm, St. Paul 1, Minn., for information on 
control of mice in orchards with poison grain and cost of poison 
grain available through the society. 
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