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January, 1991 AREC-Monticello
Research Report 91-2
1991 FLORIDA PECAN SPRAY GUIDE AREC-MONTICELLO
Prepared by R. F. Mizell, III and J. H. Aldrich
Time of Spray
Pesticide'
To Control2 Remarks3'4
First Prepollination
(approx. April 1)
Second Prepollination
(approx. April 15)
First Cover
(approx. May 1)
Second Cover
(approx. May 21)
Third Cover
(approx. June 15)
Fourth Cover
(approx. July 7)
Fifth Cover
(approx. July 30)
Sixth Cover
(approx. Aug. 15)
3,7,15,21,24,26;
4,8,9,10,12,16;
10,11,23;.
3,7,15,21,24,26;
2,4,8,9,21;
10,11,23;
3,7,15,21,24,26;
2,4,8,9;
4,8,9,10,12,16;
1,4,5,6,12,13,14,17,
22;
4,25;
See first cover
See first cover
See first cover
1,8,9,11,14,16;
17;
14,18,19,20;
2,4,8,9,17;
See fourth cover
See fourth cover
S;
LC,NC;
P
S,DS,NB;
FW;
P
S,PM;
FW;
LC,NC;
A;
M
S,PM,
A,M,SB
S,DS,BLS,
PM,A,M
S,DS,BLS,
PM,A,M;
HS;
W;
FW
Cattle grazing-read label Benomyl used
alone may aid the development of resis-
tant strains of diseases especially
pecan scab.
Increase vol/tree as foliage grows.
Alternation of insecticide through-
out season is suggested to avoid
outbreak of secondary pests.
Spray for aphids and mites only if
avg. of more than 30/compound leaf,
if sprayed previously for nut case-
bearer, do not repeat.
If weather is rainy, apply fungi-
cides at 2 wk intervals or increase
rate by 1/2. Combinations of insec-
ticides tank mixed may be necessary
to control all pests present.
Check nuts for shuckworm damage
spray either #4,7,9,10,15,23,27
or 29 if present.
Apply second and third shuckworm
spray at 2 week intervals after
first spray.
S,DS,BLS, Aphids and mites may build up if
PM,A,M,HS,W Sevin is used for W. Monitor and
spray if numbers of aphids exceeds
avg. of 10/compound leaf. Sample
randomly throughout the orchard.
S,DS,BLS, Do not apply after shuck split. The
PM,M,A,HS,W advantage of controlling late season
foliar diseases is currently contro-
versial. Therefore, an early to mid-
September fungicide application could
be beneficial.
'If different pesticide formulations are used, they should be used at an equivalent amount of actual
toxicant/acre. Tank mixes of different compounds should be tested in small amounts before filling tank.
2BLS=brown leaf spot, DS=downy spot, NB=nursery blight, PM=powdery mildew, S=scab,
A=aphid, HS=hickory shuckworm, LC=leaf casebearer, M=mites, NC=nut casebearer, P=phylloxera, SB=spittlebug,
W=weevil, FW=fall webworm/walnut caterpillar.
3This schedule is considered prophylactic and does not consider the improvements and savings that can
be gained by scouting of orchards for the detection of pests. We strongly recommend the use of scout
information to reduce the application of pesticides.
4For more detailed information consult the FAIRS computer program which is accessible through your local county
extension office.
I.
PESTICIDE AMOUNT AND RESTRICTIONS'
No. Chemical
Amt/A
Interval Between Last Application and Harvest
1 Ammo 2.5EC
2 Bacillus
thuringensis
3 Benlate 50WP
4 Cygon 2.67EC
5 Cymbush 3E
Di-Syston 8EC
Duter 30F
8 Guthion 50WP
9 Imidan 50WP
10 Lindane 20%
11 Lorsban 4E
3-5 fl oz
0.5-1 lb
0.8 lb
2 pts
2.6-4.3 fl oz
1-3 lbs
17-25.5 oz
2 lbs
1.5-2 lbs
4 qts
1 qt
Do not apply within 21 days of harvest or after
shuck split. Do not graze.
--. Several available: Dipel, Thuricide,
Javelin
Do not apply after shuck split.
Do not apply within 21 days of harvest.
Do not apply within 21 days of harvest or after
shuck split. Do not graze.
30 days, do not apply more than 3 times/season.
Do not apply after shuck split. Maximum of 10
applications/year. Do not graze.
Do not apply after shuck split. Do not graze for
21 days after treatment.
14 days. Do not graze.
Use only 1 application per season. Do not graze.
Do not apply within 28 days of harvest. Do not
graze.
Malathion 25WP
Mavrik 2E
Methomyl 1.8L
Orbit 3.6E
16 Parathion 2EC
17 Pydrin 2.4 EC
(Asana XL)
(Asana 1.9EC)
18 Savit 4F
19 Savit 80WP
20 Sevin 80WP
21 Super-Tin 4L
22 Temik 15G2
23 Thiodan 50WP
24 ,Topsin-M 70WP
25 Vendex 4L
26 Ziram F-4
6 lbs
6.4 fl oz Nonbearing trees only. Do not graze.
2-4 pts 30 days. Do not graze.
4-8 fl oz Do not apply after shuck split. Do not graze. Do
not exceed 4 applications per growing season. Use
lower rate for prepoltination sprays, higher rate
during nut formation.
2.5 pts Do not apply after shuck split or within 15 days
of harvest. Do not graze.
5.3-16 fl oz Do not apply after shuck split. Do not graze.
(4.8-14.5 ft oz) Do not exceed 1.2 Lbs/A/season. Asana may be
(1.7-5 fl oz) substituted.
2-5 pts Do not apply more than 7.2 lbs/A/application.
3 lbs Do not apply more than 9 Lbs/A/application.
3 lbs Do not apply more than 9 lbs/A/application.
8-12 oz Do not apply after shuck split. Maximum of 10
applications/year. Do not graze.
6 lbs Must be applied in early season within dripline
and worked into soil.
1 Lb Do not apply after shuck split. Do not graze.
1/2-1 Lb Do not apply after shuck split.
4-8 fl oz o Do not apply after shuck split. l ..~,
3 pts/100 gal Apply up to 5 times/yr but not after August.
'This schedule is a guide to aid the grower; however, all pertinent information relating to
the pesticides cannot be included. It is the responsibility of the grower to read the label
for information on restrictions and correct use. Use of a pesticide inconsistent with the
label is illegal. Do not graze treated orchards.
2Temik must be applied before March 31 unless special authorization from regulating agencies
is mandated. If placed near emitters in irrigated orchards use 2.5-4.8 lbs ai/A.
* :'>*:,** **.-.*.{.,.*,.*
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