Title: Primary evaluation of preplanting, preemergence and postemergence applied herbicides in vegetable and field crops.
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 Material Information
Title: Primary evaluation of preplanting, preemergence and postemergence applied herbicides in vegetable and field crops.
Physical Description: Serial
Language: English
Creator: Orsenigo, J. R.
Publisher: Everglades Research Station, University of Florida
Place of Publication: Belle Glade, Fla.
Publication Date: August, 1963
 Notes
General Note: Everglades Station Mimeo Report EES64-3
 Record Information
Bibliographic ID: UF00076927
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Full Text


erglades Station Mimeo Report
Everglades Station Mimeo Report EES64-3


August, 1963


PRIMARY EVALUATION OF PREEMERGENCE AND POSTEMERGENCE APPLIED
HERBICIDES IN VEGETABLES AND FIELD CROPS, SPRING, 1963 1/

J. R. Orsenigo2-


Summary: Intense rainfall and brief crop flooding at 10 days after planting
altered herbicide performance and crop response. The results which
follow must be interpreted with this consideration.

The preemergence standard herbicide, CDEC at 4 lb/A, provided the best general weed
control and overall crop tolerance. Diphenamid, EFTC, FW-925 and R-4461 were
relatively innocuous to many crops but did not provide effective control of some
components of the weed flora. Relatively good weed control but poor crop tolerance
were noted for the test dosages of: atrazine, (CDAA-:CDEC), CP-18907, CP-31393,
CP-42718 and trifluralin. These later materials may have specific utility with
tolerant crops.

The delayed preemergence herbicides did not control the weed flora effectively.

None of the postemergence applied herbicides were both effective and innocuous to
the test crops. Several materials appeared to have utility in certain crops as
directed sprays. SD-6623 and UC-22463 provided some annual grass week control
with least crop injury. The three experimental materials, CP-42718, CP-43659 and
CP-44176, achieved weed control superior to that noted in Table 7A & 7B. These
chemicals caused almost complete cessation of annual grass weed growth for a period
of about 10 days during which the treated grass became chloronemic and died. Sur-
factants affected herbicide performance, usually by reducing crop tolerance and
increasing annual weed control. Tordon was highly effective against broadleaf
weeds; even spray tank rinse water killed broadleaf crops and weeds.


Experiment:

Location:


Soil type:

Cultural operations:


1088 10 63


EES, Fields 2 E 5, 6


Okeelanta peaty muck

Field preparation; March 1963
Soil insecticide; 28 March 1963, Kepone (cornmeal bait)
1 lb/A
Fertilization and fitting; 3,4- April 1963
(900 lb/A, 0-12-16 with micronutrients)
Final fitting; 23, 24 April 1963
Crops planted; 25 April 1963
Routine fungicide/insecticide applications were made
weekly or more frequently when required.


1. This tabulation of the comparative performance of commercial and experimental
herbicides under the organic soil conditions of the Florida Everglades, Spring,
1963, was prepared for herbicide researchers and the industry. The data here-
in neither constitute nor imply recommendation of any herbicide for any usage.

2. Associate Horticulturist, University of Florida, Everglades Experiment Station,
Belle Glade, Florida.








Design: Non-replicated single treatment plots. Vegetable (21 test varieties)
and field (6 test varieties) crops were planted in north-south rows.
Herbicide treated strips (6 ft. wide by 60 ft. long) traversed the
crop rows in an east-west direction. Handweeded, unweeded and CDEC (4 lb/A) stan-
dard herbicide controls were interspersed among the treatments at intervals.

Description of test crops: Not all crops attained sufficient stand or growth to
permit adequate evaluation. Crops planted are listed
in Table 1 and data for crops evaluated are in the following tables.

Description of weed population: Annual grass and broadleaf weed seed had commenced
germinating but no seedlings had emerged at time
of preemergence treatment. Both annual grass and
broadleaf weed seedlings were emerging when delayed preemergence applications were
made. Weeds in the postemergence plots at time of application were typical of the
unweeded controls and the experimental area. These species and their stage of
development at postemergence application were (asterisks, *, indicate major infest-
ants):

Alexandergrass (Brachiaria sp.): 3 to 4 in tall, 2 to 3 tillers
*Crabgrass (Digitaria sp.): 3 to 4 in tall, 2 to 4 tillers
*Goosegrass (Eleusine indica): 3 to 4 in tall, 2 to 4 tillers
*Spiny amaranth (A. spinosus): to 4 in tall
*Sedge (Cyperus odoratus): 1 to 3 in tall
Purple nutsedge (C. rotundus): 1 to 3 in tall
*Watersedge (Kyllinga sp.): 2 to 1 in tall.

Weeds of occasional occurrence were: Commelina sp., Acnida cannabina
and a wild Poinsettia sp. The mixed sedge populations originated mainly from seed.

Description of herbicidal treatments: Herbicides, formulation and suppliers are
given in Table 2. Rates of application
are listed as Ib/A active ingredient or
acid equivalent, whichever is appropriate.

Preemergence treatments were applied broadcast to the soil surface after
seeding in rolled soil. Water was the carrier unless indicated otherwise. Carrier
volume was 60 gpa and treatments were applied with a Hypro roller pump on an ex-
perimental herbicide tractor. Delayed preemergence treatments were applied similarly.

Postercrgence herbicidal treatments were applied, with the same equipment,
ac broadcast topical sprays over crops and weeds in 60 gpa water carrier.

Spray water hardness = 200 gr.
Spray water pH = 6

Dates of herbicide application:
Preemergence: 26 April 1963 (06:50 to 10:15 AM, wind SW 0-4 mph,
overcast) and (12:45 to 04:00 PM.
wind NW to 5 mph, moderate to full sun)

Delayed preemergence: 28 April 1963 (07:30 to 07:45 AM, wind E
0 to 4 mph)

Postemergence: 17 May 1963 (08:30 to 10:45 AM, wind SE to SW
0 to 5 mph, sun)








Surface soil moisture at herbicide application: (NB field capactiy ca. 160~ )

After preemergence application: 0 to 3/8 in depth = 46%
3/8 to 1 in depth = 101%


After delayed preemergence:


Rainfall data:


Time after
application
1 week
2
3
4
* Includes -
treatments


Temperature data:


0 to 3/8 in depth = 72
3/8 to 1 in depth = 112


Total accumulated rainfall for week after application indicated:


* Pre-
emergence
0.67 in
4.51
4.62
5.53


Post-
emergence
0.91 in


in overhead irrigation applied 5 days after preemergence
were applied.

Ambient temperatures are summarized as average values for
maximum, minimum and mean degrees F for the week after appli-
cation indicated.


Time after
application
1 week
2
3
4


Preemergence OF
Max. Min. Mean
82 61 72
80 59 70
87 63 75
88 65 77


Postemergence F
Max. Min. Mean
88 65 77


Method of evaluation: Handweeded and unweeded control strips served as crop and
weed standards. Treatments were compared also with the
standard herbicide, CDEC at 4 lb/A preemergence. Visual
evaluations were made at the times indicated in the data tables. A rating scale
of 5 elements was based upon the non-chemical controls. This departure from
customary methods was necessitated by the intense rainfall and flooding which
prevented more precise evaluation of chemical performance and crop response. A
summary figure for overall crop tolerance and weed control was calculated from
the rating designations given below. The crop tolerance and weed control indicies
are given in the data tables to represent the comparative general worth of the
treatments. The more satisfactory the chemical, the higher the index. Perfect
crop tolerance would be indicated by an index of 120 and perfect control of all
annual weeds by an index of 20.

The rating designations were:


Designation
E
G
M
P


Crop Tolerance
Excellent
Good
Moderate
Poor


Wecd Control
Excellent
Good
Moderate
Poor
Nil








Experimental results: The standard preemergence chemical, CDEC at 4 Ib/A, was
the superior general herbicide as based on crop tolerance
and weed control. Trifluralin continued to provide a
high level of weed control but crop tolerance was reduced. Several new experi-
mental chemicals provided better than adequate weed control but were harmful to
most of the test crops: CP-18907, CP-31393, CP-42718, atrazine and (CDAA + CDEC).
Preemergence herbicides did not appear to be affected by the addition of surfact-
ants to the carrier solutions. (Tables 3A to 6B).

None of the delayed preemergence herbicide treatments was promising.
(Tables 6A, 6B).

Few postemergence applied herbicides effectively controlled annual grass
weeds: TD-282, TD-283, TD-442, TD-492, F-439, SD-6623, UC-22463, diuron-- surfact-
ant, FW-925 and simazine. The highest crop tolerance indicies were noted for
SD-6623 and UC-22463. (Tables 7A-9B).



























Aclmowledgments: This evaluation was supported in part by grants from E.I. duPont
de Nemours & Co. and the Monsanto Chemical Company. Herbicides
were provided by the suppliers listed in Table 2. Pesticidal
chemicals for maintenance were provided by: E.I. duPont de Nemours & Co., General
Chemical Division, Entomology and Plant Pathology Sections, EES, and Stauffer
Chemical Company. Mr. William R., Alston assisted in installation and maintenance.










Table 1. Description of test crops:


Sweet corn
Sorghum
Oat
Rice
Kenaf
Okra
Sesbania
Southernpea
Snapbean
Soybean
Peanut
Tomato
Cucumber
Summer Squash

Cocozelle
Carrot
Cabbage, white
red
Chinese cabbage
Radish

Lettuce

Endive



Escarole

Romaine


Variety

Winter Garden
Grazer
Surgrain
CP 9016
Mixed BG
Perkins Spineless

Alabama Crowder
Harvester
Early Manchu
Valencia
Homestead
Ashley
Early Yellow
Summer Crookneck
Cozella
Long Imperator
Badger Market
Red Acre
Michihli
Early Scarlet
Globe
Great Lakes
Salad Bowl
Green-curled,
green-ribbed
Green-curled,
pink-ribbed
Full-heart
Batavian
Parris Island Cos


Development at postemergence treatment


12 to 15 in tall
15 to 18 in tall
8 in tall
6 to 8 in tall
8 to 10 in tall
4 in tall
6 in tall
10 to 12 in tall
6 to 9 in tall
10 to 12 in tall
6 to 8 in tall
1 to 2 in tall
4 in tall

8 to 10 in tall


10 to
1 to
less
1 to
2 to

to 3
less
less


12 in tall
2 in tall
than 1 in tall
2 in tall
3 in tall

in tall
than 1 in tall
than 1 in tall


1 to 2 in tall

less than 1 in tall

1 to 2 in tall
1 to l-1 in tall


Crops marked with an
application.


asterisk are those emerging at time of delayed preemergence









Table 2. Herbicides, formulation and suppliers.


Chemagro Corp.
cc .4505
cc 4780

Diamond Alkali
DCPA

The Dow Chemics
Tordon

E.I. duPont de
diuron
WK

Geigy Agricultu
atrazine
simazine

George Hruby
H-88153 S
H-101112
Sukrose

Eli Lilly and C
triflurali

Monsanto Chemic
CDAA
CDEC
CP-13936
CP-18907
CP-31393
CP-42718
CP-43659
CP-44176
HS-119

Naugatuck Chemi
OMU
OMU -I- BCPC


Niagara Chemice
solan


Clal
Cla:


dim

li Co.
4-a


ssified
ssified


ethyl 2,3,5,6-tetrachloroterephthalate, Dacthal


mino-3,5,6-trichloropicolinic acid


Nemours & Co.
3-(3,4-dichlorophenyl)-1, l-dimethylurea, Karmex
surfactant

iral Chemicals
2-chloro-4-ethyl amino-6-isopropylamino-s-triazine, Atrazine
2-chloro-4,6-bis(ethylamino)-s-triazine, Simazine


and H-88153 NS Classified
Classified
Classified

0o.
In 2,6-dinitro-N,N-di-n-propyl-a,a,a-trifluoro-p-toluidine

:al Co.
2-chloro-N,N-diallylacetamide, Randox
2-chloroallyl diethyldithiocarbamate, Vegadex
Classified
Classified
Classified
Classified
Classified
Classified
Classified

ical Div.
cycluron, 3-cyclooctyl-l,1-dimethylurea
cycluron (16.5%) + butynyl-N-(3-chlorophenyl)carbamate(11.3%)
Alipur

l Div.
3'-chloro-2-methyl-p-valerotoluidide, Solan


Pennsalt Chemicals Corp.
TD-282, TD-283 Classified
TD-442, TD-484 Classified
TD-487, TD-492 Classified
TD-440, TD-446 Classified









Plant Products
F-439 Classified

Roberts Chemicals Inc.
EXD diethyldithiobis(thionoformate), Herbisan 5

Rohm & Haas Co.
X-100 surfactant
FW-925 2,4-dichlorophenyl-4-nitrophenyl ether

Shell Development Co.
SD-6623 trimethylsulfonium chloride

Stauffer Chemical Co.
EPTC ethyl N,N-di-n-propylthiolcarbamate, Eptam 6E
R-1607 N-propyl di-n-propylthiolcarbamate
R-1910 ethyl diisobutylthiolcarbamate
R-2063 ethyl N-ethyl-N-cyclohexylthiolcarbamate
N-3446 tri-n-butyl tin trichloroacetate
R-4461 Classified

Sugarland Chemical Co.
Xtender surfactant

Thompson-Hayward Chemical Co.
dichlobenil 2,6-dichlorobenzonitrile, Casoron

The Upjohn Co.
diphenamid N N-dimethyl-2,2-diphenylacetamide, U-4513

Union Carbide Chemicals Co.
UC-22463 Classified

United States Sugar Corp.
2,4-D dimethylamine salt of 2,4-dichlorophenoxyacetic acid

Vero Beach Labs.
B-40557 N-(p-chlorophenyl)-O-N',N'-trimethylisourea
B-42041 Classified








. Table 3A. Tolerance response of designated crops to preemergence applied herbicides on organic soil at 31 weeks
c after application


Trh~ldet P. r.t: 3rb/aA

Handweeded control
CDEC control, 4 lb/A

Tordon,
1
2

trifluralin, 2


HS-119, 3
6

CP-13936, 4
CP-18907, 4
8
CP-31393-A, 4
8
CP-31393-B, 4
8
CP-42718, 4
8
CP-43659, 4
8
CP-44176, 4
8


-P 0
.1- 0

0 a u A 0
0) c t 1 4 ta V b
'Co too o 0 C .)
'"o c 0w i o .o oi tS i 4 ^ d c


Pf Pf
N N
N N


Gf N
Gf N








S Table 3B. Tolerance response of designated crops to preemergence applied herbicides on organic soil and weed
control observations at 3- weeks after application. Crop tolerance and weed control indices are noted.


o0

Herbicide & rate, Ib/A >
Handweeded control E
CDEC control, 4 3b/A G


0

) ) 0
-P 0
>o +> a oG g s


Ti
r4
o
(U P
HO a,

114 E
93 G


reed Control


*0



E
M


I 0}



E E
E G


Tordon,
1
2


P N M
N N N
N N N


trifluralin, 2
4


HS-119, 3
6


CP-13936, 4
CP-18907, 4
8
CP-31393-A, 4
8
CP-31393-B, 4
8
CP-42718, 4
8
CP-43659, 4
8
CP-44176, 4
8


x
H
20
16


47 N
36 N
34 N

65 G
51 E

74 P
67 P

73 P
55 G
39 E
55 E
50 E
58 E
53 E
64 M
52 M
98 N
86 N
78 N
56 G







Table 4A. Tolerance response of designated crops to preemergence applied herbicides on organic soil at 3
weeks after application.


0
U
O1)


Herbicide & rate, lb/A
TD-282, 8
TD-283, 8
TD-442, 6
TD-484, 6
TD-487, 6
TD-492, 6
F-439, 2
R-1607, 6, incorp.
R-1910, 6, incorp.
R-2063, 6, incorp.
N-3446, 8
UC-22463, 6
12

B-40o557, )k
B-42041, 4
DCPA, 10
10 + 1, X-100
10 + 2%o X-100
10 + 1% WK
10 + 1% Xtender
diuron, 2
2, + 1% X-100
2, -- 2 X-100
2, + 1% WK
2, : 1% Xtender


E
E
G
G
G
E


CS
al i l
C O u ( -P 0 .
(d (D S
at
4 0 1
at at U
a) a)
--------------------


0)
1-i
0
a
0
0

G
E
G
P
E
G


I

M
M

E
M
G
E


M E P N M G E M M G M P P E E


N N N
N N G







Table 4B. Tolerance response of designated crops
control observations at 32 weeks after


to preemergence applied herbicides on organic soil and weed


application.


Crop tolerance and weed control indices are noted.


Herbicide & rate, lb/A
TD-282, 8
TD-283, 8
TD-442, 6
TD-484; 6
TD-487, 6
TD-492, 6

F-439, 2

R-1607, 6, incorp.
R-1910, 6, incorp.
R-2063, 6, incorp.
N-3146, 8


to
S*
V
cS )


S')
4)


r-
'to

M; F-40


Weed Control

tl O )


M N P E M N P N N 69 N N N G 7


uc-22463, 6


B-40557, '
B-42041, 4


DCPA, 10
10
10
10 -
10

diuron, 2
2 +
2 +
2 +
2 +


X-100
X-100
Tender
Xtender


1% X-100
2% X-100
1 WK
1% Xtender








Table 5A. Tolerance response of designated crops to preemergence applied herbicides on organic soil at 31 weeks
after application.


Herbicide & rate, lb/A
Atrazine, 4 E
4 1% X-100 E
4 -- 2 X-100 E
4 1~ WK E
4 -+ 1% Xtender G


0 1 0
(Ti 5 ug-
0 r-I~bil
34 D6 < ( O rQ ^ l
0C 0 0 0 = +
Cl 0 Cl g ^ E-i g 0 C
S~~~~~l C. 8)< S ^


trifluralin, 3
3 + 1% X-lo
3 2% X-100
3 + 1% \K
3 -- 1i Xtender

CDEC, 3
3 -:- 1 X-100
3 + 2' X-100
3 -+ 10 WK
3 + 1% Xtender


CDAA 1A CDEC 1,- G
i + 1 + X-100 G
2X+ l- 20 X-100 G


OMU, 9
9 + 1% X-100

cu -;- BCFC, 8
8 + 1% X-loo

FW7-925, 4
4 + 1% X-loo







Tolerance response of designated crops to preemergence applied herbicides on organic soil and weed control
observations at 3- weeks after application. Crop tolerance and weed control indices are noted.


Herbicide & rate, lb/A


atrazine, 4
4 + 1
4 + 2%
4 + 1%
4 + I1o


X-100
X-100
XWK
Xtender


trifluralin, 3
3 + 1% X-loo
3 + 2% X-100
3 + 1% WK
3 + 1% Xtender


CDEC, 3
3
3
3
3


0
o


N
N
N
N
N

P
P
P
P
P

P
P
P
P
P


X-100
X-100
1WK
Tender


r-4

a
O
4-)
xP
Hoj

36
34
33
35
35

54
59
62
58
59

61
60
56
60
61


CDAA I + CDEC
1- -- + 1, X-100
i2 2 + 2 % X-100

(MU, 9
9 1% X-100

(v -- BCFC, 8
8 + 1% X-100

FW-925, 4
4 1% X-100


Weed Control


M
M
M
M
M


G
E
E
E
E

M
M
M
M
M


E

E
E
E
E
E

E
E
E
E
E
E
E

E
E
E


57 E
60 E
58 E


Table 5B.


0)

(2

G
G
G
G
G

P
P
P
P
P

G
G
G
G
G


H

17
17
17
17
16
17
17
17
17
16
16
16
16
16
16








Table 6A. Tolerance response of designated crops to preemergence and delayed preemergence applied herbicides
i on organic soil at 3 weeks after application.


Herbicide & rate, lb/A
EFTC, 4
4 + 1% X-l00
4 -+ 2; X-100

4 + 1% Xtender

R-4461, 4
4 + q1 X-100

dichlobenil, 6
6 + 1% X-100

diphenamid, 6
6 + 1% X-loo
6 + 2% X-l00
6 + 1% 1JK
6 -+- 1% Xtender

Delayed preemergence
Tordon, A


ac "
0 .0 0
----- m o--3+ o----
Uc 1 d- K> ([ > 3 U
o 0 (< S y S o 3 ^
t5 ro O K ti Q < CQ t 4 6^ O C


Solan, 4
4
4

EXD, 10


-: 1% X-100
+ 2% X-100


10 + 1% X-100
UC 22463, 4


G G G M E E G E G G G N M G E







. Table 6B.
U\
H(


Tolerance response of designated crops to preemergence and delayed preemergence applied herbicides
on organic soil and weed control observations at 31 weeks after application. Crop tolerance and
weed control indices are noted.


Herbicide & rate, lb/A


EFTC, 4
4
4
4
4


X-100
X-100
tender
Xtender


R-4461, 4
4 +- 1% X-l00

dichlobenil, 6
6 -- % X-oo00


diphenamid,
6 +
6 +
6 +
6 +


X-100
X-100

Xtender


Delayed preemergence
Tordon, -
1

solan, 4
4 + 1% X-l00
4 + 2~ X-loo

EXD, 10
10 + 1% X-l00
UC 22463, 4


Weed Control


aS
aS a
C) C
r C.)


4)

9; '-


t)
Cd 0 a a1


84
91
94
103
97

93
92

76
72

95
100
100
97
93


46
39

67
67
65


G P M P G P M P P 72
G P M N M P M P P 75
G P M P M P P P P 81








Table 7A. Tolerance response of designated crops to postemergence applied herbicides on organic soil at 5 days
after application.
0 r
o o



Herbicide & rate, lb/A l
-------------------------------------------------------- ---------------------------


Handweeded control

cc 4505, 2
4
cc 4780, 2
4

Tordon, 1/8
1/4
1/2


E E E E E E E E E E E E E E E


CP-31393, 2
CP-42718, 1
2
CP-43659, 1
2
CP-44176, 1
2

TD-282, 4
TD-283, 4
TD-440, 1
TD-442, 2
TD-446, 1
TD-484, 4
TD-492, 3


N N N N N P N N N N


F-439, 4


P N N G N







STable 7B. Tolerance response of designated crops to postemergence applied herbicides on organic soil and weed
Control observations at 5 days after application. Crop tolerance and weed control indices are noted.

0 c e a Weed Control
0 .0 0 .0 U 0 I CV.
0o d ,o ko O .
9 ^ (3 01 0 g Id Pr, 0 1
Herbicide & rate, lb/A
Handweedcd control E E E E E E E E E 110 E E E E 20

CC 4505, 2 N N P N N N N N N 44 N N E P 9
4 N N P N N N N N N 33 P N E P 11
CC 4780, 2 G N P N N N P N P 51 P N E P 11
4 N N P N N N N N N 34 P N E P 11

Tordon, 1/8 N P M P M N N N N 35 N N E P 9
1/4 N P M P P N N N N 34 N N E P 9
1/2 N P P P P N N N N 30 N N E P 9
1 N N P P P N N N N 28 N N E P 9
2 N N P P P N N N N 28 N N E P 9

CP-31393, 2 G P G M M P M M M 64 N N E M 10
CP-42718, 1 M M G P P M G M G 61 M M M M 12
2 M M M P P M G M G 63 M M P M 11

CP-43659, 1 G P P P N P P P P 49 M M G M 13
2 M N P P N N P P P 44 M M G M 13
CP-44176, 1 G P P P P P P G 50 M M G P 12
2 G P P P P P P N M 50 M M G P 12

TD-282, 4 N N N N N N N N N 24 E E E E 20
TD-283, 4 N N N N N N N N N 24 E E E E 20
TD-440, 1 P N P N N P P P P 35 M P E P 12
TD-442, 2 N N N N N N N N P 36 G P E P 13
TD-446, 1 P N P N N N P P P 39 M N E P 11
TD-484, 4 G P P P P P P P N 50 M P E P 12
TD-492, 3 N N P N N N N N N 27 G P E P 12


N N N N N N N N N


29 E E E P 17


F-439, 4










STable 8A.
H^


Tolerance response
after application.


of designated crops to postemergence applied herbicides on organic soil at 5 days


Herbicide & rate, Ib/A
SD-6623, 4
S-+ 1% x-loo
4 + lI X-100


UC 22463, 1
3

B-40557, 2
B-42041, 2

diuron, 1
1 +
1 --
1 +-
1 -+-
1 +
1 +
1 ;-
1 +
1 +

FW-025, 2
4


X-100
X-100
X-100
WK
IIK

Xtender
Xtender
Xtender


0

~ o

to to


0) a d ,a
4-1-4
8
Sm


S 01
* 4Q


0

-P
4)f


G
P
P


N
0
o
0

N
P
P


Cg


N
N
P







o% Table 8B. Tolerance response of designated crops to postemergence applied herbicides on organic ;soil and wee3-
control observations at 5 days after application. Crop tolerance and weed control indices are noted.

W0 b Weed Control
P0 0k -d 0
S0 0
o. S S i l U d 0 t
d 44 Cd 0 094 U O
H 0 < m3 0. $
Herbicide & rate, Ib/A __ _

SD-6623, 4 G G E G P N P N N 64 G G G G 16
4 + X-100 G M G M N N N N N 53 E E E E 20
4t + 1 X-100 M P M P N N N N N 45 E E E E 20

UC 22463, 1 G G G M N N P P N 62 M P G P 11
3 P P M P N N N N N 43 G M E P 14

B-40557, 2 E P P N N N N P N 48 G P G P 12
B-42041, 2 E M M P P P M M N 68 M P M P 10

diuron, 1 N N N N N N N N N 39 M M E G 15
1 + f% X-100 N N N N N N N N N 28 E E E E 20
1 + 1% X-100 N N N N N N N N N 26 E E E E 20
1 I- 2o X-100 N N N N N N N N N 25 E E E E 20
1 + 'W N N N N N N N N N 26 E. E E E 20
1 + Ie NK N N N N N N N N N 25 E E E E 20
1 ,- 2? TK N N N N N N N N N 25 E E E E 20
1 + Xtender N N N N N N N N N 27 G G E G 17
1 + 1% Xtender N N N N N N N N N 27 G G E E 18
1 + 2% Xtender N N N N N N N N N 27 E E E E 20

FTW--925, 2 E N G G M N N P N 44 G M E M 13
4 E N M M P N N N N 40 E M E G 17









T Table 9A. Tolerance response of designated crops to postemergence applied herbicides on organic soil at 5 days
cu after application.


Herbicide & rate, lb/A

2,4-D, 1/32
1/16
1/8
1/4
1/2
1

H-88153S, gpa

H-88153 NS, I gpa

H-101=12, gpa
1 gpa
1 gpa

Sukrose 610222, J gpa
1 gpa


0 C
5. 0 0
o 51
( uS 0 4
C < -P 0 (O N
Soo a
mCO O < a C O
Pcg


Ef N
Gf N
Pf N
Pf N
Pf N
N N


G M E
G Mf M
M Pf P
Pf Pf N
Pf N N
N N N


G E N N M N N N N N P N N N N


simazine, 1












Table 9B.


Tolerance response of designated crops to postemergence applied herbicides
control observations at 5 days after application. Crop tolerance and weed


Herbicide & rate, Ib/A

2,4-D, 1/32
1/16
1/8
1/4
1/2


H-88153S, gpa
1 gpa
1 spa
H-88153NS, gpa
1 gpa
H-101112, gpa
1 gpa
Sukrose 610222,


-P
0



E
E
G
P
N
N


u
to
O




G
M
M
P
N
N


u
a





E
M
P
F
P
N


"id



M
M
M
P
N


N
N
N
N
N
N
N


M
M
P
P
N
N


0
C'
0
TO


P
P
P
P
N
N


0



P
N
N
N
N
N


SPi
od0
H O



87
75
58
48
41


on organic soil and weed
control indices are noted.


V)




N
N
N
N
N
N
N


Weed





N
N
N
N
N
N


Control
I
0 c3


M
M
G
G
G
E


al



N
N
N
N
N
N


6

6
6
7
7
7
8


i gpa
1 gpa


simazine, 1


N N N N N N N N N 34


G N E M 13


0
*ro


ao




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