Title: Primary evaluation of pre-planting and of pre- and post-emergence applied herbicides in vegetable and field crops.
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 Material Information
Title: Primary evaluation of pre-planting and of pre- and post-emergence applied herbicides in vegetable and field crops.
Physical Description: Serial
Publisher: Everglades Experiment Station,
Publication Date: 1961
Copyright Date: 1962
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Bibliographic ID: UF00076887
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
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Everglades Station Mimeo Report 62-1


PRIMARM EVALUATION OF PRE-PIANTING AND OF PRE- AND POST-EMEBGEKCE
APPLIED HERBICIDES IN VEGETABLE AND FIELD CROPS, SPRING, 1961/

J. R. Orsenigo/


Summary: Fifty-seven commercial and experimental herbicides comprised 199
non-replicated treatments which were compared pre-planting, pre-
emergence, or post-emergence to 21 vegetable and 3 field crops on organic
soil. Pre-planting blade and scratch incorporation were not highly effective
and only EPTC was promising. The best pre-emergence performance among new
materials was recorded for CP-31723, CP-32179, FW-925, Herb 326 and Trifluralin,
and for DNBP + 2,4-DEP and TD-306. CDEC, the pre-emergence standard herbicide
in these trials continued to provide general performance superior to other
chemicals tested. Test crops were not generally tolerant of chemicals applied
post-emergence. The outstanding post-emergence herbicides were: G-34162, Herb
326 and G-34161.
-- -----ft eff--------- M-- ---Ww----
Experiment: 1088-1-61
Location: EES, Fields 1 E 3, 4
Soil Type: Okeelanta peaty muck
Cultural operations:


Field preparation: February, 1961
March, 1961
Fertilization and fitting: 4 April 1961 (400 lb/A,
Final fitting: 10 April 1961
Crops planted, Group I: 12 April
Final fitting: 25 April 1961
Crops planted, Group II: 26 April
Routine fungicide insecticide applications were made
frequently when required.


0-10-20)



weekly or more


Design: Non-replicated single treatment plots. Vegetable (21 test varieties)
and field (3 test varieties) crops were planted in north-south rows.
Herbicide treated strips (6 ft. wide by 120 ft. long) traversed the crop rows
in an east-west direction. Handweeded, unweeded and CDEC (4 Ib/A) standard
herbicide controls were interspersed among the other 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 given in the Tables.


/ This tabulation of the comparative performance of commercial and eq:L
mental herbicides under the conditions of the Florida Everglada es6 r
1961, was prepared for herbicide researchers and industry. le data
herein neither constitute nor imply recommendation of any herbicide for ,;
any usage.

2 Associate Horticulturist, University of Florida, Everglades 'Seriment
Station, Belle Glade, Florida. K


julyy, 1961









Description of weed population: Pre-planting and pre-emergence treatments
were applied prior to weed emergence but germination of annual grecz
and broadleaf weed seed had commenced. Weeds present in post-emergence plots
at time of herbicide application were typical of unneeded controls and the area
in general. These species were:
Spiny amaranth, Amaranthus spinosus; 4 to 6 in. tall, with 4 to 5
expanded leaflets.
Ragweed, Ambrosia sp.; scarce, up to 3 in. tall.
Purslane, Portulaca oleraceae; scarce, up to 3-4 in. tall.
Purple nutsedge, peruse otundus; 2 to 4 in. tall with 3. to 4
expanded leaves.
Major weed species were:
Crabgrass, Digitaria sp; 3 to 4 in. tall and tillering.
Goosegrass, Eleusine indica; up to 6 in. tall with 3 to 4 tillers.

Description of herbicidal treatments: Herbicides, formulations and suppliers
are listed in Table 2. Rates of application are given itClhe data
tables in Ib/A active ingredient or acid equivalent, whichever is appropriate.
Pre-planting blade incorporation treatments were made approximately
21 in. deep with a blade 2 in. thick by 4 ft. vide containing 3 #'15004 TeeJet
nozzles. Rate of water carrier application was 50 gpa. Herbicide distribution
across the width of the blade was imperfect and ratings are based upon areas
of effective application only. Plots were rolled after application.
Pre-planting scratch incorporation herbicides were sprayed on the
soil surface in 50 gpa of water in a swath 6 ft. wide and immediately incor-
porated with a tined weeder and then rolled. The spray equipment is described
below.
Pre-emergence applications were made broadcast to the soil surface
after seeding with experimental tractor spray equipment applying 50 gpa of
water carrier solution at Ca. 25 psi and a tractor speed of 2.5 mph. The brush
boom was equipped double nozzle with TeeJet 8003 tips.
Post-emergence treatments were applied with the above equipment and
application details except that the herbicides were applied in aqueous solu-
tions broadcast topical sprays over crops and weeds.

Dates of herbicide application:
Pre-planting blade and scratch incorporation:
11 April 1961 (10:30 12:45; wind nil to light air)
Pre-emergence, Group I: 14 April 1961 (05:45) 08:30 AM, wind variable,
N at 0 to 6 mph, drift negligible)
Pre-emergenqe, Group II: 27 April 1961 (06:15 08:30 AM, wind nil)
Post-emergence: 4 May 1961 (01:30 02:30 PM, wind variable,
SW at 0 to 4 mph, drift negligible)

Surface soil moisture at time of herbicide application; (N.B. Field capacity

24 hours after incorporation and rolling:
Blade, 0 to 3/8" depth = 99%
3/8 to 1" depth = 118%
Scratch 0 to 3/8" depth = 100-
3/8" to 1" depth 121%
Immediately after pre-emergence, Group I: 0 to 3/8" depth = 95%
3/8 to 1" depth = 117%
Immediately after pre-emergence, Group II: 0 to 3/8" depth = 101%
3/8 to 1" depth = 117%








Rainfall data: Total accumulated rainfall for week after application indicated:

Time after Pre-planting; pre-emergence Post-
application Group I Group II emergence
1 week 0.0 in. 0.52 in. 0.58 in.
2 0.0 1.10 1.74
3 0.52 2.26 1.74
4 0.61 2.26 8.16
6 2.26 8.73

Temperature data: Ambient temperatures are summarized below as average values
for maximum, minimum and mean degrees F for the weeks after applica-
tion indicated.
Pre-planting; pre-emergence Post-
Time after Group I Group II emergence
application Max. Min. Mean Max. Min. Mean Max. Min. Mean
1 week F 570 F 5F 73700 7 M ? 73-F
2 80 51 65 84 61 73 86 61 73
3 86 60 73 86 61 73

Method of evaluation: Handweeded and unweeded control strips served as stan-
dards and treatments were compared also with the standard herbicidal
treatment, CDEC at 4 Ib/A, pre-emergence. Visual evaluations of crop stand and
tolerance were recorded at three weeks after pre-emergence treatment and at 10
days after post-emergence application on a 1-9 rating scale based upon non-
chemical controls. The values are reported as percentages of these comparative
standards.

Experimental results: The results are given as non-interpreted tabular data
with additional comments below.

Pre-planting incorporation: Crops were rated slightly more tolerant
of scratch than blade incorporation but this may have been only an apparent
result associated with more uniform application in scratch treatments. Fenac
was the only material which effected good broadleaf weed control. EPTC, alone
and in combination, was a more effective grass herbicide than its analogs.
When blade incorporated, CDAA, CDEC and fenac were ineffective herbicides and
were deleterious to crops not usually injured in pre-emergence applications.
(Tables 3-6)

Pre-emergence, Group I: Herbicides which had good general crop
tolerance were: amiben, CDAA, CDAA + Plyac, CDEC standard, CDEC + Plyac, CDEC
+ monuron, CP-18978, CP-31675, CP-31723, CP-32179, fenac, FW-925 (4 lb/A),
G-32293, 7531 (4 Ib/A),Trifluralin, and Zytron. Zytron stimulated cabbage emer-
gence, stand and development notably over the untreated controls. (Tables 7 -
11, 13 17)
The most effective herbicides (particularly against grass weeds) were:
CDAA, CDAA combinations, CDEC standard, CDEC combinations, CDEC-K, CP-31723
(4 Ib/A), CP-32179 (1, 2, 4 lb/A), FW-925 (8 lb/A), G-34161, G-34162, Herb 326,
and Trifluralin. (Tables 12, 18)
New herbicides which warrant further investigation are: CP-31723, CP-
32179, FW-925, Herb 326 and Trifluralin. It should be noted that CDEC, the pre-
emergence standard, continued to provide the best "all around" performance.










Pre-emergence, Group II: Good crop tolerance and general weed control
vere afforded by: DNBP + 2,4-DEP combinations and by TD-306. EPTC maintained
excellent grass weed control and good crop tolerance. The experimental coded
materials prefixed by "CP" controlled all weeds for approximately 10 week but
'Ioany crops which emerged normally died within the first month. The best over-
all performance was by CDEC standard, EPTC and TD-306. (Tables 13-18)

Post-emergence: An acceptable degree of general crop tolerance was
not recorded for any of the herbicides tested. Additives (surfactants) had
little influence on crop tolerance to or herbicidal performance of atrazine
and diuron. The following provided good initial control of grass and broad-
leaf weeds: atrazine (alone or with surfactants), diuron (alone and with sur-
factant), FW-925, G-31435, G-32293, IUS 1391, and TD-306. Herb 326, G-34161
and G-34162 were the outstanding post-emergence herbicides. Good nutsedge con-
trol was achieved by G-34161 and Herb 326. G-34162 obtained almost complete
control of nutsedge and provided longer residual control of all weeds than the
other herbicides. (Tables 19 23)

Acknowledgements; This evaluation was supported in part by grants-in-aid
from E. I. DuPont de ITemours & Company, and the Monsanto
Chemical Company. Herbicides were furnished by the suppliers listed in Table
2. Certain vegetable and field crop seed were provided by: Agricultural
Insecticide Company, Agronomy Section Everglades Experiment Station,
California Packing Company and Kilgore Seed Company. Pesticidal chemicals for
maintenance of the experiment were provided by: E. I. DuPont de Nemours & Co.,
Geigy Agricultural Chemicals, General Chemical Division, Entomology and Plant
Pathology Sections Everglades Experiment Station, Rohm & Haas, Stauffer
Chemical and certain cooperating growers. Mr. William R. Alston assisted in
installation and maintenance of the experiment.






Table 1. Description of test crops:


Crop


Sweet corr
Oat

Clra
Soybean
Peanut
Southernpe
Limabean
Snapbean,

Squash
Cucumber
Chinese ca
Cabbage, v

Radish
Carrott
Onion
Escarole
Endive
Lettuce
Romaine
Pepper

Tomato


Variety

Golden Security
Suregrain


Perkin's Spineless
Tanner
Valencia
3a Alabama Crowder
Fordhook 242
pole Blue Lake
bush Harvester
Yellow Crook-neck
Marketer
ibbage Michili
bhite Badger Market
red Red Acre
Cherry Belle-*
Nantes
Early Yellow Globe
Full Heart Batavian
Green-rib green-curlec
Great Lakes
Parris Island Cos
Florida Giant

Homestead 24


* Average development of Groups I and II was almost identical.

** Scarlet Turnip variety in Group II.

N.B. At time of pre-emergence treatment germination of some crop seed had
commenced but none of the crops were emerged. Planting rate and depth
were appropriate to each of the crops.


Development at post-emergence treatment*

10-15 in. tall, 3-4 leaves expanded.
to 6 in. tall, 2-3 leaves expanded,
tillering.
to 5 in. tall, 2nd true leaflet
to 7 in. tall, 2nd true leaflet
5 in. tall, 3rd true leaflet
10 in. tall, 2nd trifoliate expanded
12 in. tall, 3rd trifoliate expanded
10-12 in. tall, 2nd trifoliate expanded
10-12 in. tall, 2nd trifoliate expanded
to 15 in. tall, 4-6 leaves expanded
to 10 in. tall, 2-3 leaves expanded
to 10 in. tall, 4th true leaf
to 2 in. tall, 2nd leaf
to 4 in. tall, 2nd leaf
2-3 in. tall, 3-4th leaf
to 2 in. tall, 2nd true leaf
to 4 in. tall, 1st true leaf
2-3 in. tall, 2nd leaf
d to 6 in. tall, 2-3 leaves
3-4 in. tall, 2-3 leaves
to 1- in. tall, 1 true leaf
to l4 in. tall, cotyl. leaf and small
true leaf
3-4 in. tall, 2nd true leaf





Table 2. Herbicides, formulations and suppliers
Amchem Products
amiben 3-amino-2,5-dichlorobenzoic acid, "Amiben"
fenac sodium salt of 2,3,6-trichlorophenylacetic acid,
M-673S
Colloidal Products
X-77 non-ionic surfactant containing alkylarylpolyoxy-
ethylene glycols @ 0.1%
Columbia-Southern
CIPC isopropyl N-(3-chlorophenyl)carbamate, Chloro IPC
Diamond Alkali
Dacthal dimethyl 2,3,5,6-tetrachloroterephthalate, DAC-893
Dow Chemical
DNBP alkanolamine salts of 4,6-dinitro o sec butylphenol,
"Premerge" -
Zytron 0-2,4-dichlorophenyl O-methyl isopropylphosphor-
amidothioate, M-1329
E. I. DuPont de Nemours
diuron 3-(3, -dichlorophenyl)-1, -dimethylurea, "Karmex"
monuron j-(^-chlorophenyl)-1, l-dimethylurea, "Telvar"
Ierb 326 3-(3, 4-dichlorophenyl)-l-methoxy-l-metbylurea,
Herb. 326
Geigy Agricultural Chemicals
atrazine 2-chloro-4-ethylamino-6-isprorpylamino-s-triazine,
"Atrazine 80W"
G-34361 2-chloro-4-alkylamino-6-isopropylamino-s-triazine
G-34696 2-chloro-4-ethylamino-6-(3-methoxypropyTamino)-s-
triazine
G-34161 2-methylmercapto-4,6-bis(isopropylamino)-s-triazine
G-34162 2-methylmercapto-4-ethylamino-6-isopropylamino-s-
triazine
prometone 2-methcxy-4,6-bis(isopropylamino)-s-triazine, G-31435
atrazine 2-methyoxy-4-ethylamino-6-isopropylamino-s-triazine,
G-32293
General Chemical Division
Plyac A-C polyethylene 629 and non-ionic surfactants at
1 oz/50 gal.
Hercules Powder
7531 classified
7175 classified
Hooker Chemical
TCA ester ethylene glycol (bis-trichloro)acetate
nRS-1391 classified
Eli Lilly
Trifluralin N,N-di-n-propyl-2,6-dinitro-4-triflouromethylaniline
Dipropalin N,N-di-n-propyl-2, 6-dinitro-4-methylaniline
Diphenamid N,N-dimethyl-a,a-diphenylacetamide, L-34314
Monsanto Chemical
CDAA 2-chloro-N,N-diallylacetamide, "Randox"
CDEC 2-chloroallyl diethyldithiocarbamate, "Vegedex"
CDEC-K formulation K of CDEC
CP-31675 classified
CP-31723 classified
CP-32179 classified
CP-18978 classified






Naugatuck Chemical
2,4-DEP
Niagara Chemical
Casoron
Pennsalt Chemicals
endothal

TD-47
TD-66
TD-62
TD 268, TD-269
TD-270, TD-271
TD-272, TD-273
TD-306, TD-306E
Roberts Chemical
EXD
Rohm & Haas
FW-925
X-100

Stauffer Chemical
EPTC
EPTC, tech
R1856
R1870
R2061
R3400
R3408
R3415
Upjohn Company
U-4513
United States Sugar
2,4-D
Vero Beach Labs.
B35850


tris(2,4-dichlorophenoxyethyl)phosphite, "Falone"

2, 6-dichlorobenzonitrile, IIA5996


disodium salt of 3,6-endoxohexahydrophthalic
"Endothal"
di-N,N-dimethylcocoamine salt of endothal
di-oleylamine salt of endothal
unspecified amine salt of endothal.
classified
classified
classified
classified


acid, "Endo


ethyl xanthogen disulfide, "IIerbisan 5", two samples

classified
alkylated aryl poly ether alcohol, "Triton X-100",
at 0.1o

ethyl N,N-di-n-propylthiolcarbamate, "Eptam 6E"
do, "Eptam technical"
t-butyl di-n-propylthiolcarbamate
ethyl di-n-butylthiolcarbamate
propyl ethyl-n-butylthiolcarbamate
classified
classified
classified

N,N-dimethyl-a, a-diphenylacetamide

dimethylamine salt of 2,4-D at 1 Ib./A.


classified




Table 3. Stand and tolerance response of sweet corn, oat, okra and peanut and
of southernpea, lima bean, polebean and snapbean to certain herbicides
incorporated pre-planting. Values are percentages of untreated
controls at three weeks after application.

Sw. corn Oat Okra Peanut
Herbicide, Rate lb/A. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 00 -100 100O 10-0 10-0 1001-
IIandweeded control 100 100 100 100 100 100 100 100
CDEC pre-emg. control 82 100 62 82 92 100 87 87
pre-planting blade incorporation
EPTC, 4 lb. 87 62 25 37 25 50 25 37
EPTC, tech, 4 Ib. 100 87 25 62 12 37 25 37
R 2061, 4 lb. 100 100 25 37 37 50 25 37
R 1870, 4 lb. 100 100 37 62 37 50 25 37
R 1856, 4 Ib. 87 100 87 100 37 62 12 37
EPTC, 4 Ib. + Plyac 75 75 12 12 12 37 50 50
EPTC, 4 Ib. + 2,4-D 62 62 12 12 25 25 37 50
EPTC, 4 lb. + CDEC, 3 Ib 75 87 25 50 12 37 37 50
CDAA, 4 lb. 87 87 12 12 0 0 50 37
fenac, 4 Ib. 62 62 75 87 0 0 12 12
CDEC, 4 lb. 100 100 75 75 12 25 75 62
Pre-planting scratch incorporation
EPTC, 4 lb. 87 87 12 62 87 87 87 75
EPTC, tech, 4 lb. 87 100 25 50 87 75 87 87
R 2061, 4 lb. 50 75 37 62 62 75 75 87
R 1870, 4 Ib. 50 62 75 75 87 87 62 75
R 1856, 4 lb. 75 62 87 87 100 87 87 87

Southpea Liaabean Polebean Snapbean
Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 100 100 100o l 1000 1, 100 100 100 o
Iandweeded control 100 100 100 100 100 100 100 1CO
CDEC pre-emg control 92 100 100 100 92 100 100CO 100
Pre-planting blade incorporation
EPTC, 4 12 62 0 0 87 62 87 87
EPTC, tech, 4 25 62 0 0 75 62 87 87
R 2061, 4 37 62 0 0 87 100 87 100
R 1870, 4 50 75 0 0 87 100 87 ICO
R 1856, 4 62 87 12 37 75 100 87 Ico
EPTC, 4 + Plyac 25 50 0 0 62 62 62 62
EPTC, 4 + 2,4-D 25 50 12 62 75 75 75 62
EPTC, 4 + CDEC, 3 12 50 25 62 25 62 87 87
CDAA, 4 0 0 12 50 37 62 37 62
fenac, 4 0 0 62 12 62 12 62 12
CDEC, 4 12 12 50 25 62 12 62 12
Pre-planting scratch incorporation
EPTC, 4 75 100 62 87 100 100 100 100
EPTC, tech, 4 62 100 75 87 100 100 100 100
R 2061, 4 37 87 62 87 100 100 100 1CO
R 1870, 4 50 87 87 100 100 100 100 0lo
R 1856, 4 50 87 62 87 100 100 1CO 100






Table 4. Stand and tolerance response of squash, cucumber, spinach, pepper
and tomato and of Chinese cabbage, white and red cabbage, radish and
carrot to certain herbicides incorporated pre-planting. Values are
percentages of untreated controls at three weeks after application.

Squash Cucumber Spinach Pepper Torrto
Herbicide, Rate Ib/A. Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. .
Unweeded control 10 10 1 10 1 1 100= 100-
IIandweeded control 100 100 100 100 100 100 100 100 100 100
CDEC pre-emg control 100 100 82 75 50 50 42 82 75 87
Pre-planting blade incorporation


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4
EPTC, 4 + Plyac
EPTC, 4 + 2,4-D
EPTC, 4 + CDEC, 3
CDAA, 4
fenac, 4
CDEC, 4


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4


50 62 50 75 12 37 0 0 12 62
37 50 50 75 62 75 0 0 12 62
62 75 50 87 37 37 0 0 37 62
75 75 50 87 62 50 0 0 50 62
87 87 62 87 62 50 0 0 50 75
25 25 37 37 87 62 25 37 25 50
87 75 25 37 37 50 25 37 25 37
87 100 37 62 25 50 12 12 50 62
75 87 25 50 37 75 37 75 62 75
75 37 50 25 o 0 0 00 12 12
75 62 75 37 50 50 0 0 50 62
Pre-planting scratch incorporation
87 87 25 12 75 87 37 62 75 87
100 100 0 0 75 62 37 62 87 100
62 62 37 25 75 75 62 87 62 50
62 75 87 62 62 75 62 87 87 75
87 87 62 87 75 87 62 87 75 87


Ch. cabbage Wh.cabbage R. cabbage Radish Carrot
Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Toi.
Unweeded control To 1 0'o =o07 1005 -o 15o 100- -100 10 17'7,
Iandweeded control 100 100 100 100 100 100 100 100 100 1I'
CDEC pre-emg control 42 37 82 50 92 75 62 75 62 L2
Pre-planting blade incorporation


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4
EPTC, 4 + Plyac
EPTC, 4 + 2,4-D
EPTC, 4 + CDEC, 3
CDAA, 4
fenac, 4
CDEC, 4


37 62 0 0 62 75 0 0 75 100
25 37 12 12 62 75 0 0 100 100
37 37 62 50 50 62 0 0 75 100
50 37 75 62 62 75 0 0 87 100
25 25 12 12 62 75 0 0 75 87
25 37 75 50 75 50 12 12 100 100
87 62 62 50 75 62 0 0 62 87
62 50 62 50 62 12 0 0 62 87
75 87 62 50 87 87 o 0 62 50
75 50 37 37 50 62 0 0 37 62
87 50 87 62 75 62 12 12 75 87
Pre-planting scratch incorporation


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4


50 50 37 37 37 37
50 50 37 25 50 50
37 25 50 37 75 87
100 10o 62 50 62 87
87 100 62 50 75 87


0 50 75
0 87 75
o 87 75
0 loo 87
0 87 87





Table 5. Stand and tolerance response of onion, escarole, endive, lettuce and
romaine to certain herbicides incorporated pre-planting. Values are
percentages of untreated controls at three weeks after application.

Onion Escarole Endive Lettuce Romaine
Herbicide, Rate Ib/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control lo 10 1005 I OO 100,
HIandweeded control 100 100 100 100 100 100 100 100 100 100
CDEC pre-emg control 75 82 25 56 100 100 42 75 42 62
Pre-planting blade incorporation
EPTC, 4 0 0 0 0 75 62 37 37 0 o
EPTC, tech, 4 12 12 0 0 50 50 37 37 0 0
R 2061, 4 12 37 0 0 50 50 37 25 0 0
R 1870, 4 37 50 0 0 62 62 12 37 0 0
R 1856, 4 25 50 0 o 75 62 50 62 0 0
EPTC, 4 + Plyac 37 50 0 0 37 50 25 37 25 12
EPTC, 4 + 2,4-D 50 62 0 0 62 50 50 37 25 12
EPTC, 4 + CDEC, 3 37 50 0 0 50 37 25 25 0 0
CDAA, 4 75 75 0 0 50 37 0 0 0 0
fenac, 4 37 50 0 0 62 25 0 0 0 0
CDEC, 4 87 87 0 0 87 87 50 75 0 0
Pre-planting scratch incorporation
EPTC, 4 87 75 25 62 87 87 50 50 0 0
EPTC, tech, 4 100 87 37 62 100 87 62 50 0 0
R 2061, 4 87 87 87 87 87 87 75 62 25 62
R 1870, 4 100 100 87 62 87 100 75 62 0 0
R 1856, 4 75 75 50 75 100 100 62 50 25 25

Table 6. Grass and broadleaf weed stand and control at three weeks after pre-
planting incorporation of certain herbicides. Values are percentages
of handweeded control.

Grass Weeds Broadleaf Weeds
Herbicide, Rate Ib/A Stand Control Stand Cont: S
Unweeded control 1007 Oo 100 0"J
Handweeded control 0 100 0 100
CDEC pre-emg control 6 92 0 100
Pre-planting blade incorporation


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4
EPTC, 4 + Plyac
EPTC, 4 + 2,4-D
EPTC, 4 + CDEC, 3
CDAA, 4
fenac, 4
CDEC, 4


12
12
37
62
87
12
25
25
75
87
100

37
50
75
87
100


EPTC, 4
EPTC, tech, 4
R 2061, 4
R 1870, 4
R 1856, 4


87
87
62
12
6
92
87
87
12
12
0
Pre-planting scratch
62
62
37
12
0


37
50
87
87
87
87
87
100
87
37
87
incorporation
100
100
100
100
100







Table 7. Stand and tolerance response of sweet corn, oat, okra, soybean and
peanut to herbicides applied pre-emergence in Group I. Values are
percentages of untreated controls at three weeks after application.

Sw. corn Oat Okra Soybean Peanut
Herbicide, Rate Ib/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 100% 100% 100% 100% 100% 100% 100% 100% 100% 100"
HIandweeded control 100 100 100 100 100 100 100 100 100 100
CDEC pre-emg control 82 100 62 82 92 100 75 87 87 87


Zytron, 10
15
B-35850, 6
monuron, 3
diuron, 3
herb 326, 3
6
G-34361, 4
G-34696, 4
G-34161, 4
G-34162, 4
G-31435, 4
G-32293, 4
Trifluralin, 4
Dipropalin, 4
Diphenamid, 4
U-4513, 4
CDAA, 4
CDEC-K, 4
CP-31675, 1
2
4
CP-31723, 1
2
4
CP-32179, 1
2
4
CP-18978, 1
2
4
Casoron, 4
CIPC, 16
FW-925, 4
8
7531, 4
8
7175, 4
amiben, 4
fenac, 4


100 100 62 62 100 100 100 100 75 87
100 100 75 87 100 87 75 87 87 87
100 87 50 87 75 87 100 100 75 87
100 100 62 75 87 87 87 100 75 75
100 100 62 100 37 25 62 50 87 100oo
100 100 75 87 37 37 50 75 50 87
50 87 75 87 25 37 62 87 50 87
100 100 75 75 75 87 62 87 62 75
100 100 87 87 87 75 37 75 50 87
62 87 62 75 87 100 75 87 75 62
100 87 50 50 100 75 12 37 87 100oo
100 100oo 75 62 100 100 62 37 37 37
100 87 37 50 100 87 62 87 87 87
87 87 62 75 87 87 62 37 100 87
100 87 75 50 100 10oo 50 75 62 75
87 87 37 37 87 75 3 62 62 87
87 87 50 62 o o 62 62 50 ;5
100 100oo 75 100 75 87 87 87 87 87
62 87 87 100 62 8Q 50 62 62 87
75 87 100oo 00 75 87 100 87 100oo 100
75 87 87 100 87 100 87 75 100 100
87 100 100 87 75 87 `O 75 J.o 87
87 87 75 87 62 87 50 62 75 87
100oo 87 75 75 75 87 75 62 50 75
100 87 87 75 87 75 75 62 50 62
62 75 100 87 130 100 75 75 100 100oo
100 100 100 87 87 100 62 62 87 87
87 100 87 75 75 37 50 50 75 87
100 100 100 100 100 87 87 87 75 87
87 o 100oo 100 100 87 87 100 62 87
87 87 100 87 87 75 100 100 62 87
100 luO 75 75 87 87 75 87 62 87
87 100 50 75 87 50 100 100 50 (6
87 100oo 87 87 87 87 87 75 50 67
75 87 87 75 87 75 87 62 37 75
62 87 87 100 100 87 100 100 87 67
100 100 100 100 87 87 62 50 75 75
100 100 87 87 62 75 62 75 25 50
62 87 75 87 87 87 75 62 37 5o
87 87 100 87 75 87 87 62 (2 62







Table 8. Stand and tolerance response of southernpea, lima bean, pole bean and
bush bean to herbicides applied pre-emergence in Group I. Values are
percentages of untreated controls at three weeks after application.


Southpea Lima bean Pole bean Bush bean
Herbicide, Rate Ib/A Std. Tol. Std. Tol. Std. To Std. Tol.
Unweeded control 100 100 100 1000 % 100% 100% 100% 100%
Iandweeded control 100 100 100 100 100 100 100 1CC
CECC pre-emg control 87 100 100 100 92 100 100 100


Zytron, 10
15
B-35850, 6
monuron, 3
diuron, 3
Herb 326, 3
6
G-34361, 4
G-34696, 4
G-34161, 4
G-34162, 4
G-31435, 4
G-32293, 4
Trifluralin, 4
Dipropalin, 4
Diphenamid, 4
U-4513, 4
CDAA, 4
CDEC-K, 4
CP-31675, 1
2
4
CP-31723, 1
2
4
CP-32179, 1
2
4
CP-18978, 1
2
4
Casoron, 4
CIPC, 16
FW-925, 4
8
7531, 4
8
7175, 4
amiben, 4
fenac, 4


100 100
100 100
100 100
50 87
87 87
100 100
100 100
50 75
100 100
100 100
87 75
75 87
100 100
75 100
87 87
75 87
75 87
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 87
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100


100 100
87 100
100 100
87 87
100 87
100 100
87 100
62 100
100 100
87 100oo
75 87
87 100
87 87
100 100
100 87
62 87
87 100
87 100
100 100
87 100
100 100
87 100
87 100
87 100
100 100
100 100
87 100
87 87
100 100
87 87
87 87
75 87
75 100
87 100
87 100
100 100
100 100
87 100
87 10o
87 87


100 100
100 87
100 100
87 87
100 100
100 100
100 100
87 87
87 100
100 100
87 100
100 100
87 100
100 87
100 100
1oo loo
100 100
100 100
100 100
87 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
87 75
100 100
100 100
100 100
100 100
100 100
100 100
100 87
100 100
100 100
87 87
100 100
100 100


100 100
100 87
100 100
100 100
100 100
100 100
87 87
87 87
87 87
100 87
100 100
100 100
100 100
100 87
100 100
100 100
100 100
100 100
lo 100
100 100
100 100
100 100
100 100
100 100
100 100
100 100
100 1CO
100oo 87
100 100
100 100
100 100
87 0oo
87 100

87 87
87 100
100 1CO
100 100
100 100
100 87








Table 9. Stand and tolerance response of squash, cucumber, spinach, pepper and
tomato to herbicides applied pre-emergence in Group I. Values are
percentages of untreated controls at three weeks after application.

Squash Cucumber Spinach Pepper To,:a o
Herbicide, Rate lb/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Um;eeded control 100l 100% 100% 100% 100% 100% 100 100loo 100% 100
Handweeded control 100 100 100 100 100 100 100 100 100 100
CDEC pre-emg control 100 100 82 75 50 50 42 75 75 87


Zytron, 10
15
B-35850, 6
monuron, 3
diuron, 3
Ierb 326, 3
6
G-34361, 4
G-34696, 4
G-34161, 4
G-34162, 4
G-31435, 4
G-32293, 4
Trifluralin, 4
Dipropalin, 4
Diphenamid, 4
U-4513, 4
CDAA, 4
CDEC-K, 4
CP-31675, 1
2
4
CP.31723, 1
2
4
CP-32179, 1
2
4
CP-18978, 1
2
4
Casoron, 4
CIPC, 16
FW-925, 4
8
7531, 4
8
7175, 4
amiben, 4
fenac, 4


75 87 87 100 87 87 62 100 62 87
75 75 75 87 75 87 50 87 50 87
87 87 75 87 100 87 0 o 75 87
75 62 100 100 87 87 62 62 62 62
62 62 50 25 37 37 0 0 0 0
75 87 o 0 o o 0 o 12 25
75 87 0 0 0 o o o 0 0
75 100 100 87 87 75 50 62 75 75
100 100 100 100 75 87 50 62 62 87
100 87 25 25 62 75 0 0 25 25
87 87 25 37 25 25 0 0 0 0
87 100oo 87 75 50 62 e o 12 12
87 100 100 100 37 75 o o 12 12
87 75 100 75 87 87 75 87 62 75
75 75 75 87 75 62 75 62 75 75
100 100 37 75 62 75 37 62 75 75
100 87 62 75 75 87 25 50 75 62
100 100 75 100 62 50 37 62 62 75
87 87 100 75 75 75 50 62 62 75
87 87 75 87 87 100oo 37 62 75 62
100 100 100 87 87 100 12 12 50 50
87 100 62 37 87 87 37 37 37 37
100 100 87 87 87 87 37 62 62 75
100 100 100 87 87 87 50 62 50 62
62 50 75 50 75 62 25 50 87 25
100 100 50 37 75 50 50 50 25 12
100 100 75 25 87 50 50 37 62 12
87 75 62 12 75 25 12 12 0 o
100 87 75 87 100 87 50 62 62 62
87 87 100 87 75 87 37 62 50 62
100 100 87 100 62 75 50 62 37 62
87 100 50 75 12 25 25 50 50 37
50 62 0 0 50 37 12 12 0 0
100 100 0 o 100 87 50 62 87 62
100 62 50 25 87 75 37 62 75 50
75 100oo 87 75 100 87 50 62 50 37
87 87 50 75 62 75 37 50 87 75
87 87 62 87 75 75 25 37 50 62
100 100 87 87 62 62 25 37 62 37
87 87 87 87 75 75 50 37 50 37







Table 10. Stand and tolerance response of Chinese cabbage, white and red
cabbage, radish and carrot to herbicides applied pre-emergence in
Group I. Values are percentages of untreated control at three weeks
after application.


Ch cabbage Wh cabbage R cabbage Radish Carrot
Herbicide, Rate/A Std. TStd. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 1000 100% 100% 100 0 100% 100% 100% 100% 100 0 100f


Uandweeded control 100 100
CDEC pre-emg control 42 37


Zytron, 10
15
B-35850, 6
monuron, 3
diuron, 3
Herb 326, 3
6
G-34361, 4
G-34696, 4
G-34161, 4
G-34162, 4
G-31435, 4
G-32293, 4
Trifluralin, 4
Dipropalin, 4
Diphenamid, 4
u-4513, 4
CDAA, 4
CDEC-K, 4
CP-31675, 1
2
4
CP-31723, 1
2
4
CP-32179, 1
2
4
CP-18978, 1
2
4
Casoron, 4
CIPC, 16
FW-925, 4
8
7531, 4
8
7175, 4
amiben, 4
fenac, 4


100 75
100 87
37 25
75 50
0 0
0 o
o o
12 37
75 75
0 0
0 0
0 0
62 25
100 87
100oo 75
87 87
75 100
12 12
0 0
0 0
12 12
12 12
37 37
25 25
50 12
0 0
0 0
0 0
0 0
25 25
37 37
12 25
0 0
50 37
50 62
50 75
25 37
o o
50 75
50 50


100 100 100 100 100 100 100 100
82 50 92 75 32 37 82 62


100
100
0
too
o
50
0
0
0
0
0
0
0
0
0
87
62
75
87
100
75
50
50
62
87
87
75
75
87
37
75
75
75
75
0
62
75
0
o
o
100
75


ico loo 100 o o 87 1oo
100 100 100 25 50 87 87
0 37 37 0 0 75 75
62 75 87 0 0 75 75
o 0 0 0 0 50 62
0 0 0 0 0 75 75
o o 0 0 0 75 75
o 37 25 25 37 75 75
0 50 100 50 75 87 87
0 0 0 12 25 87 87
0 0 0 0 0 87 87
o o 0 37 62 75 87
0 0 0 0 0 100 87
87 75 87 37 62 75 75
75 1oo 100 62 62 62 62
75 87 87 25 50 75 87
87 100 87 25 50 87 75
87 100oo 87 25 50 50 37
75 100 87 12 12 62 37
50 75 100 o o 87 100oo
50 100 100 37 75 50 62
50 75 75 37 50 87 87
62 50 62 25 37 75 87
75 100oo 87 12 25 87 87
75 100 100oo 12 25 87 75
50 100 87 o o 75 62
37 87 75 0 0 87 62
12 50 25 0 0 25 12
75 87 87 25 50 87 75
75 87 87 o 0 87 75
75 87 87 o o 87 75
50 87 87 o o 37 25
0 62 12 0 0 62 62
62 75 87 12 12 75 62
62 87 87 25 12 75 87
o 75 87 12 12 100 87
0 75 37 0 0 87 75
0 12 25 0 0 87 87
100oo 100 100 0 75 75
87 87 87 o 0 87 75








Table 11. Stand and tolerance response of onion, escarole, endive, lettuce and
romaine to herbicides applied pre-emergence in Group I. Values are
percentages of untreated controls at three weeks after application.

Onion Esce.role Endive Lettuce Romaine
Herbicide, Rate Ib/A Std. Tol Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 100% 100% 100% 100% 100% 100% 100% 100% 100 100oC
Ilandweeded control 100 100 100 100 100 100 100 100 i00 100
CDEC pre-emg control 75 82 25 56 100 o00 32 75 42 62


Zytron, 10
15
B-35850, 6
monuron, 3
diuron, 3
Ierb 326, 3
6
G-34361, 4
G-34696, 4
G-34161, 4
G-34162, 4
G-31435, 4
G-32293, 4
Trifluralin, 4
Dipropalin, 4
Diphenamid, 4
U-4513, 4
CDAA, 4
COEC-K, 4
CP-31675, 1
2
4
CP-31723, 1
2
4
OP-32179, 1
2
4
CP-18978, 1
2
4
Casoron, 4
CIPC, 16
FW-925, 4
8
7531, 4
8
7175, 4
amiben, 4
fenac, 4


75 87 62 75 100 100 50 87
87 87 37 62 100 87 62 75
62 87 50 75 75 75 50 50
50 87 75 87 100oo 87 75 75
25 75 25 50 0 0 25 50
0 0 0 0 0 0 0 0
0 0 0 O0 0
37 75 37 62 87 50 62 62
75 75 75 62 75 37 62 62
o o 50 50 o o o o
0 0 112 2 0 0 0 0
62 87 37 37 12 12 25 37
75 87 0 0 62 37 62 62
87 62 50 75 75 50 25 50
75 62 62 75 87 87 7' 75
50 87 37 75 100 100 67 U7
75 87 50 75 100 100 87 37
100oo 75 37 37 50 25 37 62
87 75 12 25 62 62 25 50
100 100 25 50 62 62 5C 87
100 100 50 50 62 75 62 87
87 75 37 37 87 87 50 62
87 87 25 37 87 87 62 62
100oo 87 25 50 100 75 37 50
87 75 12 12 50 62 25 12
87 75 37 25 62 37 25 12
87 75 50 37 75 25 12 12
62 62 12 12 37 12 o o
87 87 37 25 75 62 37 75
75 87 50 25 62 62 75 75
75 87 37 25 87 62 62 75
87 87 o 0 50 37 12 25
87 87 50 37 87 62 75 75
100oo 87 62 50 87 87 75 87
87 87 75 62 62 62 75 50
62 75 12 12 25 37 75 75
75 62 62 62 87 75 62 50
62 75 75 75 87 87 50 62
75 75 75 75 75 87 62 75
75 75 50 62 87 87 67 75








Table 12. Grass and broadleaf weed stand and control at three weeks after appli-
cation of pre-emergence herbicides in Group I. Values are percentages
of handweeded controls.

Grass weeds Broadleaf weeds
Herbicide, Rate Ib./A. Stand Control Stand Control
Unweeded control 100% 0" 100, O0;
Uandweeded control 0 100 0 100
CDEC pre-emg control 6 92 0 100
Zytron, 10 87 12 25 87
15 75 25 12 92
B-35850, 6 92 6 100 12
monuron, 3 87 6 87 25
diuron, 3 18 75 0 100
Herb 326, 3 12 92 0 100
6 6 96 0 100oo
G-34361, 4 75 25 12 87
G-34696, 4 100 25 100 0
G-34161, 4 25 75 12 87
G-34162, 4 25 82 0 100
G-31435, 4 62 25 12 87
G-32293, 4 75 25 12 87
Trifluralin, 4 0 100 12 87
Dipropalin, 4 12 87 87 12
Diphenamid, 4 100 6 100 0
u-4513, 4 100 6 100 0
C1AA, 4 6 92 12 87
cr C-K,i 4 6 87 12 87
CP-31675, 1 87 12 87 12
2 100 6 87 12
4 87 12 75 25
CP-31723, 1 87 12 62 25
2 6 87 75 25
4 6 92 12 87
CP-32179, 1 25 75 0 100
2 12 87 0 1CO
4 6 92 0 100
CP-18978, 1 75 12 100 0
2 87 12 100 0
4 87 12 100 0
Casoron, 4 75 25 100 0
CIPC, 16 25 75 87 12
FW-925, 4 25 75 100 0
8 12 87 12 87
7531, 4 87 12 100 0
8 75 18 100 0
7175, 4 100 6 87 12
ariben, 4 100 0 100 0
fenac, 4 100 0 87 12







Table 13. Stand and tolerance response of sweet corn, oat, okra, soybean and
peanut to herbicides applied pre-emergence in Group I and Group II.
Values are percentages of untreated controls at three weeks after
application.
Sw corn Oat Okra Soybean Peanat
Herbicide, Rate Ib/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unweeded control 100% 100% 100% 100% 100 100 10000 100% 100% 100%
Iandweeded control 100 100 100 100 100 100 100 100 100 100
Group I
CDEC pre-emg control 82 100 62 82 92 100 75 87 87 87
CDAA, 4 + DiBP, 2 100 100 75 87 75 87 50 75 100 75
CDAA, 4 + 2,4-D 100 100 75 87 87 75 37 62 75 87
CDAA, 4 + diuron, 2 100 100 87 87 37 62 50 62 75 75
CDAA, 4 + monuron, 2 100 100 75 87 62 62 75 62 75 75
CDAA, 2 + Zytron, 5 100 100 100 87 75 87 25 62 100 75
CDAA, 4 + Plyac 100 100 100 87 87 87 75 50 100 100
CDEC, 4 + Plyac 100 100 75 87 100 100 25 62 100 87
CDEC, 4 + monuron, 1 100 100 100 100 100 87 25 50 100 100
CDEC, 4 + diuron, 1 100 100 75 100 75 87 75 62 100 100
CDEC, 4 + Dacthal, 5 87 100 62 87 62 75 50 62 100 100
CDEC, 4 + Zytron, 5 75 87 87 87 62 75 62 75 87 100
CDEC, 4 + TCA ester, 4 75 87 75 87 50 62 37 62 75 87

Group II
CDEC pre-emg control 100 100 37 75 100 100 100 100 100 100
EXD "A", 7.5 100 100 62 87 100 o00 100 75 100 87
EXD "B", 7.5 100 100 87 87 100 100 100 75 100 87
EPTC, 6 100 100 62 75 100 75 50 62 100 87
R 3400, 6 100 100 75 75 100 87 100 100 87 87
R 3408, 6 100 100 75 87 100 87 100 62 100 87
R 3415, 6 100 100 75 87 100 87 50 75 87 87
endothal, 9 100 87 50 75 100 87 37 75 100 87
TD-47, 9 100 87 87 75 100 75 25 50 62 75
TD-62, 9 100 75 87 87 100 75 25 62 87 75
TD-66, 9 87 75 75 75 100 87 50 37 62 75
,D-268, 9 100oo 87 75 50 100oo 87 25 37 100 87
TD-269, 9 87 75 87 62 100 75 25 25 100 75
TD-270, 9 100 87 62 50 87 75 25 50 100 62
TD-271, 9 100 87 50 50 87 75 50 62 87 50
TD-272, 9 87 75 75 50 100 87 25 25 62 75
TD-273, 9 100 87 75 75 87 75 37 62 100 100
TD-306, 9 100 75 50 62 87 62 25 37 62 37
TD-306E, 9 100 87 75 75 87 62 50 25 62 62
DIBP, 3 + 2,4-DEP, 4 100 100 62 75 100 50 87 75 100 100
DNBP, 3 + 2,4-DEP, 6 87 87 50 75 100 50 100 87 87 100
DNBP, 1.5 + 2,4-DEP, 4 87 87 87 75 100 50 100 87 87 100
CP-31675, 8 87 62 50 37 25 12* 50 12* 25 25*
CP-31723, 8 75 75 62 37 12 12* 75 50* 62 50-
CP-32179, 8 100 100 62 37 12 12* 87 62* 75 254
CP-18978 87 87 75 50 100 75* 100 87* 87 87*


* Indicates crops which subsequently died.








Table 14.


Stand and tolerance response of southerapea, lima bean, pole bean and
bush bean to herbicides applied pre-emergence in Group I and Group II.
Values are percentages of untreated controls at three weeks after
application.


South'pea Lima bean Pole bean Bush bean
Herbicide, Rate lb/A Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unneeded control 1000 100 O 100% 100% 100l 100% 1000 100,
Ilandweeded control 100 100 100 100 100 100 100 100
Group I
CDEC pre-emg control 87 100 100 100 92 100 100 100
CDAA, 4 + DNBP, 2 100 100 87 100 100 100 100 100
CDAA, 4 + 2,4-D 100 100 87 87 100 87 100 87
CDAA, 4 + diuron, 2 100 100 75 87 100 100 100 100
CDAA, 4 + monuron, 2 100 100 87 100 100 87 87 87
CDAA, 2 + Zytron, 5 100 100 87 100 100 87 100 100
CDAA, 4 + Plyac 100 100 100 100 100 100 100 100
CDEC, 4 + Plyac 100 100 87 87 100 100 100 100
CDEC, 4 + monuron, 1 100 100 100 100 100 100 100 100
CDEC, 4 + diuron, 1 100 100 75 87 100 100 100 87
CDEC, 4 + Dacthal, 5 100 100 75 100 100 100 100 100
CDEC, 4 + Zytron, 5 100 100 100 100 100 100 87 100
CDEC, 4 + TCA ester, 4 100 100 87 87 100 100 100 100
Group II
CDEC pre-emg control 87 100 87 100 100 100 100 100
EXD "A", 7.5 100 100 100 100 87 87 100 100
EXD "B", 7.5 100 100 100 100 87 87 100 100
EFTC, 6 100 100 100 100 100 100 100 100
R 3400, 6 100 100 100 100 100 100 100 100
R 3408, 6 87 87 87 87 100 100 100 100
R 3415, 6 100 100 0loo 00 100 100 100 87
endothal, 9 100 100 87 87 100 75 100 87
TD-47, 9 100 87 50 75 87 50 87 62
q')- 62, 9 100 87 87 87 100 87 87 75
rr-.66, 9 87 87 87 75 100 75 100 75
r-,268, 9 87 75 62 75 75 75 87 75
T.-269, 9 87 75 62 62 75 62 75 62
"D-270, 9 75 75 62 50 75 50 loo 62
TD-271, 9 100 87 87 75 100 75 100 75
TD-272, 9 87 87 75 62 62 50 87 75
TD-273, 9 75 87 50 50 75 62 87 75
TD-306, 9 87 75 87 87 100 87 87 75
TD-306E, 9 100 87 87 87 87 62 87 75
DIBP, 3 + 2,4-DEP, 4 87 62 100 87 100 87 87 75
DNBP, 3 + 2,4-DEP, 6 87 62 87 75 100 75 100 87
DIBP, 1 + 2,4-DEP, 4 87 62 100 75 100 87 100 87
CP-31675, 8 100 62* 12 12* 50 12* 50 37*
CP-31723, 8 100 100* 50 37* 87 25* 87 25*
CP-32179, 8 100 75 62 50 87 37 87 37
cP-18978, 8 100 100 87 87 100 87 87 75


* Indicates crops which subsequently died.







Table 15. Stand and tolerance response of squash, cucumber, spinach, pepper and
tomato to herbicides applied pre-emergence in Group I and Group II.
Values are percentages of untreated controls at three weeks after
application.

Squash Cucumber Spinach Pepe r Tomato
Herbicide, Rate Ib/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. Tol.
Unneeded control 100% 100% 100% 100% 100% 100% 100 100% 100% 100'
landweeded control 100 100 100 100 100 100 100 100 100 100

Group I
CDEC pre-emg control 100 100 82 75 50 50 42 75 75 87
CDAA, 4 + DNBP, 2 37 37 37 25 50 37 37 37 37 50
CDAA, 4 + 2,4-D 25 37 12 12 62 37 25 37 50 37
CDAA, 4 + diuron, 2 50 50 12 12 37 25 0 0 75 25
CDAA, 4 + monuron, 2 12 37 25 12 62 75 12 25 62 25
CDAA, 2 + Zytron, 5 50 75 62 50 87 87 12 62 62 37
CDAA, 4 + Plyac 75 75 50 37 50 50 25 50 37 37
CDEC, 4 + Plyac 75 62 75 50 62 37 25 37 50 62
CDEC, 4 + monuron, 1 50 62 87 75 62 50 62 37 75 75
CDEC, 4 + diuron, 1 87 87 50 50 37 37 37 50 50 62
CDEC, 4 + Dacthal, 5 75 87 100 87 62 50 75 50 62 62
CDEC, 4 + Zytron, 5 100 100 62 87 62 37 37 50 62 75
CDEC, 4 + TCA ester,4 87 100 87 87 50 37 75 50 87 75
Group II
CDEC pre-emg control 100 87 87 75 50 62 87 87 100 100
EXD "A", 7.5 100 100 100 100 -- 100 100 100 100
EXD "B", 7.5 100 100 100 100 -- -- 100 100 100 100
EPTC, 6 100 100 100 100 100 100 100 100
R 3400, 6 100 100 100 100 -- 100 100 100 100
R 3408, 6 100 100 87 87 -- 100 100 100 100
R 3415, 6 100 100 100 100 -- 100 100 100 100
endothal, 9 100 87 87 87 -- 100 100 100 87
TD-47, 9 100 75 100 75 -- 87 100 87 75
TD-62, 9 100 75 00oo 75 -- 100 87 100 75
T;-66, 9 100 87 87 75 -- 62 75 62 75
Tr-268, 9 87 87 75 62 -- 87 75 87 62
T,-269, 9 87 75 62 62 75 75 87 62
TD-270, 9 100 87 87 87 -- 100 87 75 62
TD-271, 9 100 87 75 75 -- 75 87 75 62
TD-272, 9 100 87 62 62 -- 100 87 75 62
TD-273, 9 87 87 50 75 -- 62 75 87 62
TD-306, 9 62 25 0 0 -- 75 12 25 12
TD-306E, 9 87 75 75 37 -- 62 37 62 25
DNBP, 3 + 2,4-DEP, 4 100 62 100 87 87 75 50 3i
DNBP, 3 + 2,4-DEP, 6 100 62 87 75 -- 87 75 62 37
DNBP, 1 + 2,4-DEP,4 100 75 87 62 -- 87 75 87 37
CP-31675, 8 100 37* 50 25* -- 50 12* 0 0
CP-31723, 8 87 50* 50 25* -- 50 12* o 0
CP-32179, 8 100 62 75 37 -- 37 12 o o
CP-18978, 8 100 100 87 75 -- 75 25 62 25


* Indicates crops which subsequently died.






Table 16. Stand and tolerance response of Chinese cabbage, white and red cabbage.
radish and carrot to herbicides applied pre-emergence in Group I and
Group II. Values are percentages of untreated controls at three weeks
after application.

Ch cabbage Wh cabbage R cabbage Radish Carrrt
Herbicide, Rate lb/A Std. Tol. Std. Tol. Std. Tol. Std. Tol. Std. ..
Unweeded control 100lo 1000o 100% 100% 100 100% 100% 1o00 100% 100
IHandweeded Control 100 100 100 100 100 100 100 100 100 100

Group I
CDEC pre-emg control 42 37 82 50 92 75 32 37 82 62
CDAA, 4 + DNBP, 2 0 0 12 25 50 12 0 0 25 37
CDAA, 4 + 2,4-D 0 0 75 12 50 37 25 37 50 37
CDAA, 4 + diuron, 2 0 0 0 0 62 12 0 0 37 12
CDA, 4 + monuron, 2 0 0 25 12 75 25 0 0 37 12
CDAA, 2 + Zytron, 5 12 25 50 37 75 75 0 0 75 62
CDAA, 4 + Plyac 0 75 37 87 50 0 0 25 37
CDEC, 4 + Plyac 12 12 75 37 87 37 12 12 87 87
CDEC, 4 + monuron, 1 25 12 75 37 87 50 0 0 100 87
CDEC, 4 + diuron, 1 12 25 75 37 75 50 0 0 87 87
CDEC, 4 + Dacthal, 5 25 25 75 50 75 50 0 0 87 87
CDEC, 4 + Zytron, 5 50 62 87 62 87 87 12 25 75 75
CDEC, 4 + TCA ester, 4 37 25 87 50 87 75 12 25 87 75

Group II
CDEC pre-emg control 100 87 100 1CO 100 100 100 100 100 100
EXD "A", 7.5 100 100 100 100 100 100 100 100 100 100
EXD "B", 7.5 100 100 100 100 100 100 100 100 100 100
EPTC, 6 100 100 87 87 100 100 100 100 75 87
R 3400, 6 100 100 87 87 100 100 100 100 75 87
R 3408, 6 100 100 100 100 100 100 100 100 62 87
R 3415, 6 100 100 87 100 100 87 100 100 62 87
endothal, 9 100 87 87 87 00 loo00 oo00 00 62 75
TD-47, 9 100 100 87 75 100 87 100 100 50 50
TD-62, 9 100 87 87 75 100 87 100 100 87 87
TD-66, 9 100 87 75 75 100 75 100 100 75 75
TD-268, 9 100 75 75 75 87 87 100 100 50 50
To-269, 9 100 87 50 75 100 100 100 100 62 37
TD-270, 9 100 75 75 87 87 87 100 100 62 50
TD-271, 9 100 75 87 87 100 87 100 100 75 62
TD-272, 9 100 100 87 87 100 87 100 100 62 37
TD-273, 9 100 87 87 100 100 87 100 100 75 50
TD-306, 9 75 37 0 0 0 0 25 12 100 75
TD-306E, 9 100 87 25 12 87 37 87 37 87 62
DNBP, 3 + 2,4-DEP, 4 75 50 0 0 0 0 100 50 75 62
DNBP, 3 + 2,4-DEP, 6 100 50 0 0 0 0 87 50 87 62
DNBP, 1 + 2,4-DEP,4 100 82 0 0 0 0 100 75 100 62
CP-31675, 8 50 25* 12 12* 50 12* 75 12* 50 37*
CP-31723, 8 50 25* 25 12* 75 25* 87 25* 87 37*
CP-32179, 8 0 0 0 0 50 12* 75 12 62 25
CP-18978, 8 87 50 75 75 87 62 1oo 75 87 37


* Indicates crops which subsequently died.








Table. 17. Stand and tolerance response of onion, escarole, endive, lettuce and
romaine to herbicides applied pre-emergence in Group I and Group II.
Values are percentages of untreated controls at three weeks after
application.
Onion Aqcarole E-:-ive Lettuce Romaine
Herbicides, Rate lb/A St4. Tol. Std. Tpl. Std. 'ol. Std. Tol. St. .
Unweeded control 100 100% 100% 100% 1000 1000 100 100 100L 10o',.
IIandweeded control 100 100 100 100 100 100 100 100 100 100


CDEC pre-emg control 75 82
CDAA, 4 + DNBP, 2 12 12
CDAA, 4 + 2,4-D 100 87
CDAA, 4 + diuron, 2 87 87
CDAA, 4 + monuron, 2 100 87
CDAA, 2 + Zytron, 5 100 100
CDAA, 4 + Plyac 87 100
CDEC, 4 + Plyac 100 87
CDEC, 4 + monuron, 1 87 75
CDEC, 4 + diuron, 1 87 75
CDEC, 4 + Dacthal, 5 87 75
CDEC, 4 + Zytron, 5 75 75
CDEC, 4 + TCA ester, 4 100 100

CDEC pre-emg control 100 100
EXD "A", 7.5 100 100
EXD "B", 7.5 100 100
EPTC, 6 100 87
R 3400, 6 100 100
R 3408, 6 100 100
R 3415, 6 100 100
endothal, 9 87 75
rT:-47, 9 87 62
TD-62, 9 75 75
TD-66, 9 62 50
T:L,268, 9 87 75
TD-269, 9 87 62
TD-270, 9 75 75
TD-271, 9 75 62
TD-272, 9 87 75
TD-273, 9 75 50
TD-306, 9 50 37
TD-306E, 9 62 37
DNBP, 3 + 2,4-DEP, 4 0 0
DIBP, 3 + 2,4-DEP, 6 0 0
DNBP, 1 + 2,4-DEP, 4 0 0
CP-31675, 8 87 37*
CP-31723, 8 100 37*
CP-32179, 8 100 25
CP-18978, 8 100 37


Group I
25 56 100 loo 32 75
0 0 0 0 00 0
0 0 0 0 0 0
O 0 0 0 0 0
0 0 0 0 0 0
0 0 25 37 37 25
o 0 37 25 12 12
37 75 87 87 75 75
50 75 87 75 37 50
37 37 62 75 50 62
50 37 62 75 62 62
50 75 75 87 62 75
62 62 75 87 87 75

Group II
100 100 100 75 62 62
100 87 87 87 75 75
100 87 87 87 75 75
100 100 100 75 62 37
87 100 62 62 87 87
87 100 87 87 75 87
100 100 87 87 87 87
25 37 37 37 75 62
25 25 25 25 25 25
87 87 62 62 87 75
37 37 62 37 37 37
25 25 37 37 o 0
37 12 62 37 25 12
37 25 87 37 50 37
62 25 87 37 62 37
37 25 62 25 0 0
12 25 62 37 12 12
87 37 87 25 o 0
62 25 62 12 0 0
37 25 37 25 0 0
50 25 37 25 0 0
87 75 87 37 0 0
37 25* 25 12* 37 12*
25 12* 12 12* 0 0
0 0 0 0 0 0
50 37 62 25 37 12


* Indicates crops which subsequently died.


42 62
0 0
0 0
0 0
0 0
12 25
25 12
37 50
50 50
12 37
50 37
25 37
50 37

87 87
87 87
87 87
75 75
62 75
62 75
75 87
87 62
50 20
75 62
37 37
37 50
50 50
25 25
25 25
50 37
50 37
0 0
37 12
37 12
62 12
75 37
25 12*
12 12*
62 12
75 50








Table 18.


Grass and broadleaf weed stand and control at three weeks after appli-
cation of pre-emergence herbicides in Group I and Group II. Values
are percentages of handweeded controls.


Grass Weeds Broadleaf Weeds
Herbicide, Rate ib/A Stand Control Stand Control
Unneeded control 100% 0 100lO 0O
IHandweeded control 0 100 0 100


CDEC pre-emg control
CDAA, 4 + DNBP, 2
CDAA, 4 + 2,4-D
CDAA, 4 + diuron, 2
CDAA, 4 + monuron, 2
CDAA, 2 + Zytron, 5
CDAA, 4 + Plyac
CDEC, 4 + Plyac
CDEC, 4 + monuron, 1
CDEC, 4 + diuron, 1
CDEC, 4 + Dacthal, 5
CDEC, 4 + Zytron, 5
CDEC, 4 + TCA ester, 4


CDEC pre-emg control
EXD "A", 7.5
EXD "B", 7.5
EPTC, 6
R-3400, 6
R-3408, 6
R-3415, 6
endothal, 9
T.-47, 9
TD-62, 9
TD-66, 9
TD-268, 9
TD-269, 9
TD-270, 9
TD-271, 9
TD-272, 9
TD-273, 9
TD-306, 9
TD-306E, 9
DNBP, 3 + 2,4-DEP, 4
DNBP, 3 + 2,4-DEP, 6
DNBP, 1- + 2,4-DEP, 4
CP-31675, 8
CP-31723, 8
CP-32179, 8
CP-18978, 8


0
100
100
0
37
62
75
62
50
75
75
62
50
50
50
50
50
6
50
12
12
18
0
0
0
0


Group I













Group II


92
100
100
100
100
87
100
67
75
67
75
75
75


100
0
0
100
50
37
25
25
37
25
25
50
62
50
50
62
50
92
50
82
82
82
100
100
100
100


100
100
100
100
100
87
100
100
100
100
100
100
100


lO
100



o
0
0
12
0
0
0
12
12
0
0
12
25
12
12
25
12
100
0
75
87
75
100
100
100
100


0
100
100
87
100
100
100
87
87
100
100
87
75
87
87
75
87
0
100
37
12
37
0
0
0
0








Table 19.


Herbicide,


Tolerance of sweet corn, oat, okra, soybean, peanut and southernpca
to broadcast topical application of post-emergence applied herbicides.
Values are percentages of untreated controls at 10 days after appli-
cation.


Rate lb/A


Iandweeded control


FW-925, 4
7531, 4
Trifluralin,
UBS 1391, 4
6
CP-31675, 4
CP-31723, 4
CP-32179, 4
CP-18978, 4
endothal, 4
TD-306, 4
TD-306E, 4
TD-66, 4
Herb 326, 2


diuron, 2
diuron, 2 + X-77
G-34361, 3
G -34696, 3
G-34161, 3
G-34162, 3
G-31435, 3
G-32293, 3
atrazine, 3


a-orasine,
aTratine,


3 + X-77
3 + X-100


Sweet
corn
100%

12
25
50
12
12
37
62
87
50
0
12
0
25
0
0
0
0
12
37
12
0
12
12
75
75
75


Oat
100%

0
o
0
50
0
0
25
50
87
50
12
0
12
25
0
0
0
0
0
12
0
0
0
0
0
0
0
o
o








o


Okra
100%

0
0
25
0
0
12
12
37
12
37
0
12
0
0
0
0
0
o
0
0
0
0
0
o
0
0


Soybean
100r

0
0
0
0
0
12
12
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0


Peanut
100d

0
0
37
0

0
0
0
o
50

0
0

0
0
0
0
0
0
0
o0
25






0
0

0

0
0
0


Southern-
pea
lOO

0
0
12
0
0
0
12
37
0
0
12
12
12
0
0
0
0
0
0
0
0
0
0
0
0
0







Tolerance of lima bean, pole bean, bush bean, squash, cucumber and
spinach to broadcast topical application of post-emergence applied


herbicides. Values
after application


are percentages of untreated controls at 10 C: s


Herbicide.


Rate Ib/A


IIandweeded control

FW-925, 4
7531, 4
Trifluralin, 4
IIBS 1391, 4
6
CP-31675, 4
CP-31723, 4
CP-32179, 4
CP-18978, 4
endothal, 4
TD-306, 4
TD-306E, 4
TD-66, 4
IIerb 326, 2
3
diuron, 2
diuron, 2 + X-77
G-34361, 3
G-34696, 3
G-34161, 3
G-34162, 3
G-31435, 3
G-32293, 3
atrazine, 3
e:.razine, 3 + X-77
atrazine, 3 + X-100


Lima
bean


Pole
bean


Bush
bean


100% 100% 100%,


Squash Cucumber


1005


100%


Table 20.


Spinach
100%


__









Tolerance of
and onion to
herbicides.


after application.


Chinese cabbage, white and red cabbage, radish, carrot
broadcast topical application of post-emergence applied
Values are percentages of untreated controls at 10 days


Herbicide, Rate Ib/A
Ilandweeded control

FW-925, 5
7531, 4
Trifluralin, 4
IIRS 1391, 4
6
CP-31675, 4
CP-31723, 4
CP-32179, 4
cP-18978, 4
endothal, 4
TD-306, 4
TD-306E, 4
TD-66, 4
Herb 326, 2
3
diuron, 2
diuron, 2 + X-77
G-34361, 3
G-34696, 3
G-34161, 3
G-34162, 3
G-31435, 3
G-32293, 3
atrazine, 3
atrazine, 3 + X-77
atrazine, 3 + X-l00


Table 21.


Chinese
cabbage
100%

12
0
25
25
12
37
62
50
62
12
0
0
25
0
0
0
0
0
0
0
0
0
0
0
0
0


White
cabbage
100%

0
0
12
0
0
50
62
75
37
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0


Red
cabbage
100%

12
0
0
0
0
25
37
62
37
0
0
0
0
0
0
0
0
0
0
0
0
0
o
0
0
0


Radish
100%

0
o
0
0
0
0
25
0
0
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
0
0
0
0
o






o
o


Carrot
100%

25
12
37
0
12
37
37
37
37
0
0
0
0
25
12
0
0
25
12
0
0
0
0
0
0
0


Onion
100%

0
0
12
0
0
25
37
12
25
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o


_ __









Table 22.


Herbicide,


Tolerance of escarole, endive, lettuce, romaine, pepper and tomato
to broadcast topical application of post-emergence applied herbicides.
Values are percentages of untreated controls at 10 days after appli-
cation.


Rate Ib/A


Handweeded control

FW-925, 4
7531, 4
Trifluralin, 4
IIRS 1391, 4
6
CP-31675, 4
CP-31723, 4
CP-32179, 4
CP-18978, 4
endothal, 4
TD-306, 4
TD-306E 4
TD-66, 4
Ierb 326, 2
3
diuron, 2
diuron, 3 + X-77
G-34361, 3
G-34696, 3
0-34161, 3
G-34162, 3
G-31435, 3
G-32293, 3
atrazine, 3
strazine, 3 + X-77
aTrazine, 3 + X-100


Escarole







37
12
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o5


Endive
100%

0
0
25
12
0
37
37
37
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0


Lettuce
100o

0
0
12
0
0
12
12
25
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o


Romaine
100%

0
0
12
0
0
12
o



12
o

12
12
37
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
0
0
0


Pepper
100%

0
0
0
0
0
12
75
37
50
o




0
0
0
0
0
o
0
0
0





0
0
0
0
0
0
12
75
37
50
o
0o
o
0o
o
0o
0o


Tomato
lood

0
o
0
o
0
0
o

12
25
12
37
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0


_









Grass and broadleaf weed stand and control at 10 days after broad-
cast topical application of post-emergence applied herbicides.
Values are percentages of handweeded controls.


ilandweeded control


FW-925, 4
7531, 4
Trifluralin,
IIRS 1391, 4
6
CP-31675, 4
CP-31723, 4
CP-32179, 4
CP-18978, 4
endothal, 4
TD-306, 4
TD-306E, 4
TD-66, 4
Herb 326, 2


diuron, 2
diuron, 2 + X-77
G...34361) 3
G-34696, 3
G- 34161, 3
G-34162, 3
G-31435, 3
0-32293, 3
airazine, 3
etrazine, 3 + X-77
a.razine, 3 + X-100


Grs weed Bradea


Grass weeds
Stand Control

o% 100%

12 82
25 75
87 12
62 25
6 82
75 12
62 25
75 12
87 6
75 12
12 75
25 62
25 62
0 100
0 100
0 100
0 o2
25 75
37 62
0 100
0 100
0 100
0 100
6 92
6 92
6 92


Broadleaf
Stand

0%

0
0
25
0
0
12
50
50
87
0
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0


I


EES 62-1
400 copies


Table 23.


weeds
Control

100%
ioo%

100
100
62
100
100
62
25
25
12
100
75
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100




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