20 
GREAT CROPS OF STRAWBERRIES AND HOW TO GROW THEM 
R. M. Kellogg Co., Three Rivers, Mich. 
Leaf 
Spot 
therefore, if you will spray with Bordeaux 
mixture at the very first appearance of any 
leaf spot the Bordeaux mixture will be 
coated over the leaves and when a spore 
lights upon a leaf it will immediately 
perish. If there is no Bordeaux mixture on 
the leaf the spore will spread and eat into 
the tissue of the leaf, destroying the diges- 
tive organs and interfering with the growth 
of the plant. 
WE suppose it is called mildew because, if 
you were to examine the leaf affected 
with a magnifying glass you would note a 
delicate web woven over the tissue 
r"tc "i '^^ '^^^^ ^ tendency to 
■ curl the leaf and cause it to appear 
as though it was affected by drought. This 
too is a fungus but, as a rule, seldom does 
any great injury. Bordeaux mixture will con- 
trol this if the spraying is done in time. 
BORDEAUX MIXTURE is a preventive 
against all fungi, and is made as follows: 
Put four pounds of blue vitriol into a coarsely 
woven sack — an .ordinary coffee 
Mirture" ^^^^ Pot^t*' ^^S' P^^'^^ twenty 
' gallons of water in a barrel and 
hang the sack on the edge of the barrel so 
that the bottom of the bag will rest on top 
of the water. This will allow the air to come 
in contact with the vitriol, which will dissolve 
it quickly and it will completely saturate the 
water. Now take four pounds of lump lime, 
place it in a wooden vessel, pour over it enough 
hot water to cover the lime — about two gal- 
lons. When the lime begins to slake, stir to 
prevent burning. When thoroughly slaked, 
pour into a barrel which contains enough 
water to make twenty gallons of the lime 
solution in all. When this is cool stir thor- 
oughly and also stir the blue vitriol solution 
thoroughly and then combine the two to- 
gether and mix by vigorous stirring before 
putting it into the spray tank. 
THERE are two effective materials used to 
destroy the insect and worm pests above 
described— arsenate of lead and Paris green. 
Here is the formula for arsenate of 
lead: Put three pounds of arsenate 
of lead in a two or three-gallon 
bucket; pour over just enough hot water to 
cover. Then take an ordinary potato masher 
and pulverize the lead until you have it beaten 
into a creamy paste, adding more water until 
you have a creamy solution. This is suffi- 
cient for from forty to fifty gallons of water. 
Arsenate 
of Lead 
