Name of spray and Insect or Spray materials, Remarks
time of application disease to be per 100 gallon
controlled
Prepollination Scab, downy Zineb,[A] 2 pounds If phylloxera is a
spray, when first spot, vein spot problem, see page
leaves are 14.
one-third grown
First cover spray, Scab, downy Zineb, 2 pounds
when tips of small spot, vein
nuts have turned spot, leaf
brown and nut blotch, brown
casebearer eggs are leaf spot
observed
Pecan nut 3 pounds 50 percent
casebearer, wettable DDT, or 1
pecan leaf pound 25 percent
casebearer wettable parathion,
or 1 pint nicotine
sulfate plus 2
quarts summer oil,
or 5 pounds 40
percent wettable
toxaphene, or 3
pounds 25 percent
wettable malathion
Rosette Zinc sulfate, 2 If rosette is a
pounds problem, include
zinc sulfate in
spray.
Second cover spray, Scab, downy Zineb, 2 pounds
3 to 4 weeks after spot, vein Zinc sulfate, 2
first cover spray spot, leaf pounds
blotch, brown
leaf spot
Rosette
Third cover spray, Scab, brown Zineb, 2 pounds If aphid or mite
3 to 4 weeks after leaf spot, infestations are
second cover spray liver spot, severe, use
aphids, mites insecticides
recommended on page
13.
Walnut If walnut
caterpillar, caterpillars or
fall webworm fall webworms are a
problem, use
insecticides
recommended on
pages 15 and 16.
Rosette Zinc sulfate, 2
pounds
Fourth cover spray Pecan weevil 6 pounds 50 percent For control of
wettable DDT weevils, apply
spray when as many
as three weevils
can be jarred from
a tree. If scab is
present add 2
pounds zineb to DDT
spray.
[A]Zineb. Zinc ethylene bis dithiocarbamate. Manufactured by Rohm & Haas
Co., trade name Dithane Z-78: E. I. DuPont Co., trade name Parzate.