Title: Suggested pecan spray schedule for Florida
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 Material Information
Title: Suggested pecan spray schedule for Florida
Series Title: Suggested pecan spray schedule for Florida
Physical Description: Book
Creator: Large, John R.
Publisher: Agricultural Experiment Station
 Record Information
Bibliographic ID: UF00084283
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 133166573

Full Text

December 1951


COOPERATIVE EXTENSION WORK IN
AGRICULTURE AND HOME ECONOMICS
(Acts of May 8 and June 30, 1914)
AGRICULTURAL EXTENSION SERVICE, UNIVERSITY OF FLORIDA
FLORIDA STATE UNIVERSITY
AND UNITED STATES DEPARTMENT OF AGRICULTURE
COOPERATING, H. G. CLAYTON, DIRECTOR









SUGGESTED PECAN SPRAY

SCHEDULE FOR FLORIDA



J. R. LARGE
Associate Plant Pathologist
Florida Agricultural Experiment Station
and
A. M. PHILLIPS
Entomologist
Florida Agricultural Experiment Station and
USDA Bureau of Entomology and Plant Quarantine

PECAN INVESTIGATION LABORATORY
MONTICELLO, FLORIDA














Single copies free to Florida residents on request to
AGRICULTURAL EXPERIMENT STATION
GAINESVILLE, FLORIDA


Circular 105





NOTES
Use of DDT may increase aphids and mites.
Parathion is a dangerous material to use.
Growers should not consider using this material
unless they plan to follow carefully the precau-
tions recommended by the manufacturer. Para-
thion is a highly effective insecticide, but it is
also highly toxic to human beings. It is poisonous
if inhaled, swallowed or absorbed through the
skin.

METHOD OF PREPARING SPRAYS
Bordeaux Mixture
1. To make 6-2-100 Bordeaux mixture use 6
pounds of copper sulphate and 2 pounds of lime to
100 gallons of water. Pour the snow form copper
sulphate onto the strainer screen and wash it into
the spray tank, filling the tank 1/2 to %3 full of
water.
2. Start the spray motor to mix with water
nd keep it going until all the chemicals have
een added to the tank.
3. Stir the lime into 5 gallons of water in a
bucket until all the lime is dissolved. Then.wash
he milk of lime through the screen into the
opper sulfate solution in the spray tank.
4. Dissolve the zinc sulphate in 5 gallons of
water. Pour this solution into the Bordeaux mix-
ure in the spray tank.
5. Finally, remove the strainer and sift the
DT or Parathion slowly into the spray tank. Be
careful not to breathe the dust from the DDT or
arathion.
6. Complete filling the spray tank with water.

Ziram
1. Fill the spray tank 1/2 to 3/ full of water.
2. Start the spray pump, remove the screen,
md pour 2 pounds of the Ziram powder slowly
nto the spray tank.
3. Dissolve the zinc sulphate in 5 gallons of
ater, then pour it slowly into the tank of Ziram.
4. Sift the DDT or Parathion slowly into the
pray mixture. Be careful not to breathe the
ust from the DDT or Parathion.
5. Pour the summer oil emulsion slowly into
he spray tank and allow it to mix thoroughly.
6. Complete filling the spray tank with water.






SUGGESTED SPRAY PROGRAM FOR CONTROL OF PECAN INSECTS AND DISEASES


Name and time of spray


For control of:


First application when first
leaves are half grown


Second application
the time the tips
small nuts have
brown


about
of the
turned


Third application three
weeks after second




Fourth application three
weeks after third


Fifth application last week
in July or early in August


Scab, downy spot,
nursery blight

Scab, nursery blight,
brown leaf spot, pecan
nut casebearer, aphids


Scab, nursery blight,
powdery mildew,
blotch, brown leaf
spot, rosette



Scab, nursery blight,
powdery mildew, pecan
leaf casebearer,
aphids, mites


Scab


4-1-100 Bordeaux
mixture

6-2-100 Bordeaux mix-
ture + 2 Ibs. of 50%
wettable DDT
or
2 lbs. 15% wettable
Parathion
or
2 lbs. Ziram (76%) in
100 gal. plus 1 qt. Sum-
mer oil emulsion plus 2
lbs. of 50% wettable
DDT
or
2 lbs. 15% wettable
Parathion

6-2-100 Bordeaux
mixture
or
2 lbs. Ziram (76%) in
100 gal. + 1 qt. summer
oil emulsion

6-2-100 Bordeaux mix-
ture + 2 lbs. 15% wet-
table Parathion
or
2 lbs. Ziram (76%) in
100 gal. + 1 qt. summer
oil emulsion + 2 lbs. 15%
wettable Parathion


6-2-100 Bordeaux mix-
ture + 2 lbs. 15% wet-
table Parathion
or
2 lbs. Ziram (76%) in
100 gal. + 1 qt. summer
oil emulsion + 2 lbs. 15%
wettable Parathion


To protect the foliage


A fungicide is necessary
protect the nuts and folia
Add 4 lbs. zinc sulphate
rosette is present. Insectici
is important to control n
casebearer. Addition of sui
mer oil to the Ziram improve
its fungicidal action. U
Parathion if aphids are pr(
ent. See caution note on u
of Parathion on page 4


Add 4 lbs. zinc sulphate
rosette is present




Add 4 lbs. zinc sulphate
rosette is present. See ca
tion note on use of Parathi
on page 4


When the rainy season
tends through July, this c
plication is necessary. I
Parathion if aphids are pri
ent


Materials


Remarks


~
I


I ______




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