i ‘ Insecticides cmd Fzmgicides. 29
I LEAF—H_OPPER.— Spray with the coal-oil emulsion as
  — given under leaf aphis.
 g SAN JOSE SCALE.-—Spray in winter, or just before leaves
 Q expand, with lime-sulphur wash, lime, 20 pounds; sulphur,
 ; 14 pounds; water, 40 gallons. In summer use dilute coal-oil
—  i emulsion as directed under leaf aphis.
 F WOOLLY APHIs.—Avoid nursery trees with knotted "
- roots;’if suspected, dip in tobacco extract, one part, 3 per
 I cent. in 70 parts water. Spray when aphis appears on trunk
or branches. Clear away soil and soak roots with the ex-
V tract when common on roots, or else use tobacco stems freely,
covering with soil. A .
I BROWN AND BITTER ROT.—Spray with lime—sulphur
V wash, or Bordeaux mixture, in winter, after pruning and
removing from twigs all dried up fruit. Spray with Bordeaux
. mixture in midsum er after fruit is well grown. If giving
— trouble and nothifi; has before been done for it, use
Bordeaux when spraying the second time for codling moth,
stirring 3 pounds of arsenate of lead in a barrel of the
_ mixture. A _ —
CROWN GALL.—-Do not plant trees affected with the
` disease. Return them to thenurserymen. When an orchard
‘ tree is found to be badly affected, dig it up and burn it. Use
· copper sulfate freely in cavity, and in a year or two _ plant a .
sound tree.
_ SCAB. —The treatment recommended for the rots serves
for this disease also.
; TWIG BLIGHT.—Cut away all diseased wood and burn,
» whenever seen. Cut blighted wood from all pear in the
neighborhood. The two diseases are identical, and are con-
veyed from one to the other. In cutting, sever twigs five or
T . six inches below the dead wood. The disease will extend as
sure as any of the bacteria are left in the bark.
I _ * ASPARAGUS.
i , RUST.——Remove all old growth and burn. If badly
` ‘ affected cut offgtops and burn, then spray new growth with
I ‘ f Bordeaux mixture. —