WEST FLORIDA EXPERIMENT STATION *
Jay, Florida MAY 7 1968

WFES Mimeo Report 68-2 I March 5, 1968
SF.A~.?.- dI. fFlia ,
HERBICIDAL CONTROL OF WEEDS IN CORN, COTTON, ---
PEANUTS, AND SOYBEANS 1967

R. L. Smith 1/


A high percentage of the farming in this area is devoted to row crops. Practi-
cally all of the land in cultivation is used for the production of corn, cotton,
peanuts, and soybeans. Acreage planted to soybeans has increased at the expense
of corn and cotton in recent years. Peanut acreage is controlled by law and remains
constant. The data in this report was obtained following the application of various
herbicides to these crops.

A limited number of chemicals were applied to blueberries, muscadines, peaches,
plums, and tomatoes.

All herbicides used in these tests were applied on a broadcast basis and the
rates indicated are pounds of active chemical used per acre. Numbers in parentheses
following names of herbicides, also, indicate pounds of active chemical per acre.
A farm type 4 row sprayer, driven by a tractor power take off was used to apply
these chemicals. Types of applications were preemergence and incorporated. All
preemergence treatments were applied as soon after planting as possible and before
the plants came up. Incorporated treatments were applied and mixed into the soil
prior to planting with a power driven rotary hoe. This implement thoroughly mixed
the herbicides with the soil to a depth of 2-3 inches. In addition, a cracking-
time application of various chemicals was applied to peanuts at emergence or later.
Each crop was planted at the recommended rate and the rows were leveled with a drag
attached to the planter. Four row plots with 4 replications were used in the
experiments with corn, cotton, and peanuts. In the soybean test 2 replications
were planted in rows and 2 were planted broadcast with a grain drill. Observations
on the check plots indicate a uniform infestation of crabgrass, water grass, goose
grass, Florida pursely, cocklebur, red weed, and morning glory. Sandspur, Egyptian
grass, coffee weed, pigweed, beggar weed, and Texas sandspur were present but not
in uniform stands.

Corn: Cokers 67 corn was planted with a 16 inch spacing in the drill in 36
inch rows on Tifton fine sandy loam soil. Prior to planting, 300 pounds of 8-24-24
and 200 pounds of ammonium nitrate were applied broadcast and disced in. Ample
moisture was present for germination and a good stand was obtained. The treatments
including rates of actual chemical used, control data, and yields are expressed in
Table 1. A check and a cultivated check were included along with 19 treatments.
No cultivation was used except on the cultivated check. Some weeds were present
in the drill in the cultivated check plots.

The data show that corn receiving 8 of these treatments produced yields in
excess of 60 bushels per acre. Fifty-seven bushels was produced by the cultivated
check plot. These treatments, with pounds of actual herbicide in parentheses were:


1/ Associate Agronomist.








-2-


Atrazine + Lorox (1 + 1), CIPC + Lorox (3 + 1), Atrazine + Lorox (1 + 1), Atrazine
+ Caparol (1 + 1), Lorox (2), Lorox (1), Atrazine (3), and dinitro + Dacamine
(3 + ). All of these treatments gave good and persistent weed control. Banvel D
gave good control of cocklebur, a weed highly resistant to most preemergence chemi-
cals, but failed to control the grassy weeds. It was, also, toxic to the corn.
The leaves were slow in unfurling and growth was shorter. C6989 was toxic to the
corn in the seedling stage but the corn apparently recovered.

Cotton: Three-hundred pounds of 8-24-24 and 200 pounds of ammonium nitrate
were broadcast and disced in on Greenville fine sandy loam soil. Incorporated
treatments were applied and incorporated prior to planting Carolina Queen cotton
in 36 inch rows. These herbicides were thoroughly mixed with the top 2-3 inches
of soil with a power driven rotary hoe. A drag was attached behind the planter to
make a smooth, firm surface for applying the preemergence herbicides. Nineteen
treatments using herbicides or combinations of herbicides were included in the test.
A check plot and a cultivated check plot were included for comparison. Moisture
conditions were favorable and a good stand was obtained.

Most treatments (Table 2) gave good and fairly persistent control of the grassy
weeds. At the end of the season cockleburs were present on most treatments.
Cotoran (4 lb.) gave the best control of cocklebur, however, it would have been
difficult to have harvested the cotton with machine or human pickers. No yields
were taken due to the heavy crop of broadleaf weeds, mostly cocklebur.

Peanuts: Five-hundred pounds of 0-16-8 were broadcast on Greenville fine
sandy loam soil and disced in. Incorporated treatments shown in Table 3 were appli-
ed and thoroughly mixed with the top 2-3 inches of soil with a power driven rotary
hoe. Early Runner peanuts were planted in 36 inch rows the following day. The
surface of the soil was smoothed by a drag attached to the planter. All pre-
emergence treatments were applied one day after planting. Moisture was plentiful
and a good stand was obtained. Twenty-six treatments using single herbicides and
combinations of herbicides were included. A cultivated and a non-cultivated check
plot were included with each replicate. Yields were not taken.

The data for the various treatments are expressed in Table 3. Daxtron and
combinations of Daxtron with dinitro and Dacamine gave good control of grasses and
relatively good control of broadleaf weeds. One pound of Daxtron was toxic to the
peanuts. Balan and Planavin gave good control of grasses but failed to control the
broadleaf weeds. Addition of dinitro (3) to Balan (3/4) increased the effective-
ness of broadleaf weed control. Vernam (3) was toxic to the extent that the stand
was decreased. W22326 (3) caused a delay in germination, however, the peanuts grew
normally after they came up. Control by Ramrod (6) was no better than control from
CP50-144 (2) and was inferior to control from CP50-144 (4). Treatments receiving
dinitro (3), Daxtron () (1), Daxtron + dinitro ( + 3) and Daxtron + Dacamine
( + ) could have been harvested. Harvesting of other treatments would have been
most difficult, due to presence of cockleburs.

Peanuts -- "Cracking Time": Peanuts in this test were planted the same day
that the regular test was planted. All herbicides were applied at cracking time
(emergence) or 7 days after emergence. Dinitro and Paraquat were used alone and
in various combinations with other chemicals.








-3-


Fourteen treatments were applied at the stages indicated in Table 4. Con-
siderable burning occurred with all "cracking time" or emergence treatments, but
the plants recovered and made normal growth. Treatments dinitro + diphenamid
(1 + 2), dinitro (4), and Paraquat () applied 7 days after emergence were very
toxic and reduced the stands appreciably. Treatments including Paraquat alone and
in combination with Sesone, diphenamid, and Falone gave a good initial kill but
the control was not persistent.

Soybeans: Hampton soybeans were planted on Greenville fine sandy loam soil
which had received a broadcast application of 500 pounds of 0-16-8. Two repli-
cations were planted in rows and two were planted broadcast with a grain drill.
Incorporated treatments as shown in Table 5 and 6 were mixed in the soil with a
power driven rotary hoe to a depth of 2-3 inches. A good supply of moisture was
present and the stand was good.

The data indicate that most chemicals gave good control of the grassy weeds.
Very few treatments gave good control of the broadleaf weeds, particularly, cockle-
bur, red weed, and morning glory. Stand damage from Vernam (2) was severe and low
yields were obtained (Table 7). Treflan (1), also caused stand damage. Lorox (2),
Treflan + dinitro ( + 3), Treflan + Daxtron ( + ), Daxtron (), dinitro (6),
dinitro + Daxtron (3 + ), dinitro + Dacamine (3 + ), and dinitro + CIPC (3 + 3)
gave excellent control of grasses and fair to good control of broadleaf weeds
(Tables 5 and 6). Results from Daxtron () indicate that it might give good to
excellent control of hard to kill broadleaf weeds. Experimental herbicides O.C.S.
21799 (3) and C6313 (3), also, appear promising in control of broadleaf weeds.
For the second year, results from herbicides CP 50-144 and GS 16065 indicate very
good control of grasses and fair to good control of broadleaf weeds. Weed control
on broadcast plantings was equal or better with the same rate of herbicide in row
plantings. However, yields reported in Table 7 show no advantage for broadcast
planting over row or drill planting.

Fruit Crops: Treflan () (1), Cassoron (2) (4), and Simazine (2) were appli-
ed to peaches, plums, muscadines, and blueberries. Sindbar was used at the rate
of 1 and 2 pounds A. to muscadines and blueberries and to peaches and plums at
2 and 4 pounds A. Paraquat () () was used as a contact spray after the weeds
were 2-4 inches tall. The area was disced prior to the application of the herbi-
cides. Treflan and Casoron treatments were incorporated with a power driven rotary
hoe.

Casoron (4) gave good control for 50-60 days and suppressed nutgrass. Treflan
failed to control red weed, cocklebur, and iron weed, but was very effective with
annual grasses. Simazine was handicapped by lack of moisture at spraying time and
2-3 weeks thereafter. Sindbar was very effective and persistent at all rates on
both grasses and weeds. However, it was very toxic to muscadines. No injury was
observed with peaches, plums, and blueberries. It was, also, toxic to nutgrass.

Excellent control of vegetation for about 30 days was obtained with Paraquat
() and () plus surfactant. Many annual weeds were killed, however, the perennials
made new growth.

Tomatoes: Herbicides were applied to transplanted tomatoes on beds May 3.
Treflan () (1), Planavin () (1), and Tillam (4) were applied and incorporated








4 -
-4-

with a rotary hoe before the plants were set. Shell 515-179 () (1), Amiben (3),
Amiben Ester (3), Amiben Ester (G) (3), and diphenamid (5) were applied on the
surface. Replicated plots of each treatment were included. The area was heavily
infested with crabgrass, pursely, and pig weeds.

Good weed control was obtained with all treatments. Shell 515-179 was very
toxic at both rates and killed practically all plants. Very little toxicity was
observed from the other treatments.









- 1 -


Herbicidal Control of Grass and Weeds in Corn 1967

West Florida Experiment Station
Jay, Florida


Herbicide
Atrazine
Atrazine + Lorox
Atrazine + Lorox
Lorox
Lorox
Atrazine + Caparol
Banvel D
Banvel D
Fenac
Amiben ester 65-81 B
CIPC + Fenac
CIPC + Lorox
C 6989
C 6989 + Patoran
Ramrod
Ramrod + 2,4-D Amine
Ramrod + Fenac
Dinitro + Dacamine
U 22326
Check

Cultivated Check


Lbs./A. T of A
3 Pre E
1 +1 Pre E
1 + Pre E
1 Pre E
2 Pre E
1 + Pre E
Pre E
1 Pre E
Pre E
2 Pre E
3 + Pre E
3 +1 Pre E
3 Pre E
2 +1 Pre E
4 Pre E
2 + Pre E
2 + Pre E
3 + Pre E
6 Pre E
Weeds present:


May 5
G BLW
9 9
10 9
10 9
9 8
10 9
10 9
7 7
9 7
7 4
7 5
8 5
9 9
10 8
10 9
9 7
9 8
9 7
10 9
8 4


May 17
G BLW
10 9
9 9
10 9
9 8
10 9
10 9
6 7
8 9
6 4
6 5
8 7
9 8
9 8
9 8
9 7
9 8
9 7
8 9
6 5


May 29
G BLW
10 9
9 9
10 9
8 8
10 9
10 9
6 8
8 10
4 4
5 4
8 7
10 8
9 7
9 8
9 7
9 8
9 8
8 9
5 4


June 12
G BLW
9 9
8 8
9 8
8 5
8 6
9 8
4 8
5 9
3 1
3 0
7 6
9 8
7 4
8 5
9 4
8 5
8 6
6 7
5 2


Goose grass, crabgrass, pursely,


red weed, cocklebur, and morning glory.
Cultivated check was not hoed.


T of A = Time of Application
G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Corn Cokers 67 variety, planted April 19 Stand good.
All chemicals applied as preemergence spray on April 20.
Herbicides Expressed in pounds of actual material on broadcast basis.
Plots Four 4-row plots of each treatment.
Weather Limited supply of moisture at planting followed by dry weather for a
period of 2 weeks.


Yield in
Bu./Acre
64.6
67.8
69.7
64.7
67.0
67.5
45.5
50.5
35.1
41.4
50.9
68.8
49.6
56.5
56.9
59.3
53.6
61.9
41.6
22.1

57.0


___









-2-


Herbicidal Control of Grass and Weeds in Cotton 1967

West Florida Experiment Station
Jay, Florida


Herbicide
Karmex
Treflan + Karmex
Treflan + Karmex
Treflan
Treflan
Treflan + Caparol
Caparol
GS 16065
Planavin
Planavin
Planavin + Cotoran
Cotoran
Cotoran
Planavin + CIPC
Ramrod
Ramrod
CP 50144
UC 22463
Sindone B
Check

Cultivated Check


Lbs./A.
1
+
l+

1
3/4+ 1
2
3

1
+ 2
2
4
+ 3
4
6
2
8
2


Time
Applica
Pre E
Inc-Pr
Inc-Pr
Inc
Inc
Inc-Pr
Pre E
Pre E
Inc
Inc
Inc-Pr
Pre E
Pre E
Inc-Pr
Pre E
Pre E
Pre E
Pre E
Inc


Weeds present:


of May 5
ition G BLI
9 7
e E 10 8
e E 10 8
10 7
10 8
e E 10 9
10 8
10 9
10 6
10 7
e E 10 8
10 7
10 9
e E 10 7
10 7
10 7
10 6
10 8
10 7
Goose grass,


May 17
J G BLW
8 7
10 8
10 8
10 6
10 7
10 9
10 8
10 8
9 6
10 7
10 8
9 8
10 9
10 7
9 6
10 7
9 6
10 7
10 6
crabgrass,


weed, cocklebur, morning glory, and Texas sandbur.
Cultivated Check was not hoed.


G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Inc = Incorporated
Incorporated chemicals applied April 12 Incorporated 2 to 3 inches deep
with power driven rotary hoe.
Preemergence chemicals applied April 30.
Cotton Carolina Queen, planted April 19 Stand good.
Herbicides Expressed in pounds of actual material per acre on broadcast
basis.
Plots Four 4-row plots of each treatment.
Weather Limited supply of moisture at planting followed by dry weather for
a period of 2 to 3 weeks.
No yields were taken.


May 29
G BLW
7 7
10 8
10 8
10 5
10 7
10 8
10 8
10 8
9 5
10 6
10 8
9 8
10 8
10 6
9 6
10 7
9 6
10 6
8 5
pursely,


June 12
G BLW
5 4
9 4
9 5
10 4
10 3
10 5
7 5
8 6
9 0
10 0
10 3
7 5
9 7
10 2
8 3
9 4
8 3
8 3
7 2
red


__









-3-


Herbicidal Control of Grass and Weeds in Peanuts 1967

West Florida Experiment Station
Jay, Florida


Herbicide
Dinitro
Dinitro + Diphenamid
GS 16065
Daxtron
Daxtron
Daxtron + Dinitro
Daxtron + Dacamine
Vernam
Balan
Balan
Balan + Dinitro
Amchem 65-81B
U 22326
S15 179
S15 179
Planavin
Planavin
Planavin + CIPC
C6313
C6989 + Patoran
C6989
Ramrod
CP 50144
CP 50144
UC 22463
UC 22463


Lbs./A.
9
3 +3
2

1
+ 3
S+
3
3/4
1
3/4+ 3
3
2

1

1
+ 3
3
2 +1
3
6
2
4
6
8


T of A
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Inc
Inc
Inc-Pre
Inc
Inc
Pre E
Pre E
Inc
Inc
Inc-Pre
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E


May 22
G BLW
9 10
9 9
9 8
10 8
10 10
10 8
10 9
8 7
9 7
10 7
10 8
9 7
9 7
8 6
9 7
9 8
10 8
10 8
7 7
8 8
9 8
9 7
8 8
10 8
7 6
9 7


June 9
G BLW
10 8
9 7
8 7
10 8
10 8
10 8
10 8
8 6
9 6
10 6
10 7
8 5
8 5
8 5
8 6
9 7
10 7
10 7
7 6
8 6
9 7
9 6
8 6
10 7
7 5
8 6


T of A = Time of Application; Pre E = Preemergence;
G = Grass; BLW = Broadleaf Weeds


Inc = Incorporated


Herbicides Rate expressed in pounds of actual material on a broadcast basis.
Incorporated materials applied May 5. All preemergence treatments applied
May 9.
Peanuts Early Runner planted May 8 Stand good.
Plots Four 4-row plots of each treatment.
Weather Moisture was plentiful at planting, and normal thereafter.
No yields were taken.


June 22
G BLW
9 8
9 5
7 5
9 7
10 8
9 8
10 7
8 4
9 4
9 5
9 5
8 3
8 4
7 4
8 4
9 5
10 6
10 5
7 5
8 5
9 5
8 5
8 5
10 6
7 5
8 5


July 6
G BLW
8 7
9 4
6 4
9 5
10 7
9 7
9 5
8 4
9 3
9 4
9 5
6 2
8 3
7 3
8 4
9 4
10 5
10 5
5 5
8 5
7 4
8 3
7 4
9 5
6 3
8 3


--------I-










-4-


Herbicidal Control of Grass and Weeds in Peanuts Sprayed
at Emergence or "Cracking Time" 1967

West Florida Experiment Station
Jay, Florida


Dinitro + Diphenamid
Dinitro + Diphenamid + 7 days
Dinitro + Sesone
Dinitro + Falone
Dinitro + Dacamine
Dinitro + Daxtron
Dinitro
Dinitro + 7 days
Paraquat + 7 days
Paraquat + Sesone
Paraquat + Diphenamid
Paraquat + Falone
Dinitro + CIPC
Dinitro + CIPC (tech.)


Lbs./A.
12 + 2
1 + 2
1i + 2
1 + 2
1+
1 +
6
4

+ 2
14 + 2
3 +3
3 +3


May 29
G BLW
9 9
9 8
8 7
9 9
8 7
9 8
10 10
9 8
10 10
10 10
10 10
10 10
9 9
9 9


June 9
P BLW
8 8
8 7
7 6
8 8
7 5
8 8
8 8
8 6
7 5
7 7
9 7
8 7
8 8
8 7


June 22
G BLW
8 7
7 6
6 6
8 8
5 5
8 7
7 8
8 5
4 3
5 4
9 5
6 6
7 7
6 6


July 6

7 4
7 4
6 6
7 7
4 4
8 7
7 7
6 6
2 2
5 3
7 5
8 6
6 6
6 5


G = Grass
BLW = Broadleaf Weeds
Peanuts: Early Runner, planted May 8 Stand good
Herbicides: Rates expressed in pounds of actual material per acre on broad-
cast basis. All treatments applied at "cracking time" or
emergence May 18, 1967; except 2nd, 8th, and 9th, which were
applied 7 days after emergence. All treatments applied 7 days
after emergence caused damage Dinitro + diphenamid (1 + 2),
10 to 15%; dinitro (4), 15%; and Paraquat (), 20%.
Plots: Four 4-row plots of each treatment
Weather: Moisture in good supply at time of application.


__









-5-


Herbicidal Control of Grass and Weeds in Soybeans Planted in Rows 1967

West Florida Experiment Station
Jay, Florida


Herbicide


Lorox
Lorox
Karmex
Shell 15179
Amiben + Ramrod
Amiben (NH )
Amiben (acid)
Amchem 65-81 B
OCS 21693
OCS 21799
Planavin
Planavin
Planavin + 2,4-D A
Vernam
Treflan
Treflan
Treflan + dinitro
Treflan + Dacamine
Treflan + Daxtron
Daxtron
Daxtron
Dinitro + diphenam:
Daxtron + Ramrod
Ramrod
Ramrod + 2,4-D A
Ramrod + Lorox
CP 50-144
GS 16065
Dacthal
Dacthal + Dacamine
Dinitro
Dinitro + Daxtron
Dinitro + Dacamine
Dinitro + CIPC
Dinitro + CIPC
C 6313
C 6989
C 6989 + Patoran
U 22 326
Sirmate
Check


Lbs./
1
2
2
3/4
1 +
3
3
3
3
3

1
2 +
2%



id


1
+
+
6
2 +
2 +
3
3
6
6 +
6
3 +
3 +
3 +
3 +
3
3
2 +
3
6
Grass


A.


Time of
Application


June
G B


Pre E 8
Pre E 10
Pre E 8
Pre E 9
2 Pre E 9
Pre E 9
Pre E 9
Pre E 9
Pre E 8
Pre E 9
Inc 10
Inc 10
Inc & Pre E 10
Inc 10
Inc 10
Inc 10
3 Inc & Pre E 10 ]
1 Inc & Pre E 10
2 Inc & Pre E 10
Pre E 10
Pre E 10
2 Pre E 9
2 Pre E 10
Pre E 9
Pre E 9
1 Pre E 8
Pre E 10
Pre E 10
Inc 10
SPre E 10
Pre E 10
Pre E 10
Pre E 10
3 Pre E 9
3 Pre E 9
Pre E 8
Pre E 8
1 Pre E 8
Pre E 8
Pre E 9
ses and weeds present:


20
;LW
8
9
8
7
7
8
8
7
4
9
5
8
7
6
9
LO
LO
7
9
8
LO
9
8
7
7
8
8
9
5
7
LO
10
9
8
9
8
7
8
7
8


July 6
G BLW
5 5
9 8
8 7
9 6
8 6
9 6
9 6
8 6
8 3
9 8
10 4
10 6
10 5
10 5
10 8
10 8
10 8
10 6
10 8
10 8
10 9
9 8
9 6
9 6
8 6
8 7
9 8
8 8
10 3
9 6
10 9
10 9
8 8
8 8
9 8
8 7
7 5
8 6
8 5
7 7
rabgrass,


July 20 Aug. 11
G BLW G BLW
5 5 5 4
9 8 9 7
6 6 6 5
8 6 8 5
8 4 8 3
8 5 7 5
8 6 7 6
8 6 7 5
7 3 7 2
8 7 8 7
9 3 9 2
10 6 9 6
9 5 9 4
9 4 8 3
9 7 9 6
10 8 10 7
10 8 10 8
10 6 10 6
10 8 10 8
10 8 10 7
10 9 10 8
9 7 8 6
9 6 9 6
9 5 8 4
8 5 7 5
7 7 6 5
8 8 8 6
8 7 8 6
9 3 8 2
9 5 8 5
9 9 9 9
10 8 10 8
8 8 8 8
8 7 8 7
8 8 8 7
8 7 8 7
7 5 6 4
7 6 7 5
7 5 6 4
7 6 6 5
goose grass, red


weed, cocklebur, pursely, and morning glory.
Cultivated Check Cultivated Check was not hoed.

G = Grass; BLW = Broadleaf Weeds
Pre E = Preemergence; Inc = Incorporated
Herbicide Expressed in pounds of actual material on broadcast basis.


Plots -
Beans -
Weather


Incorporated material applied June 6
Preemergence material applied June 7.
Two 4-row plots of each treatment.
Hampton; Planted June 6 in rows.
- Moisture supply was good at time of planting and during growing
season.










-6-


Herbicidal Control of Grass and Weeds in Soybeans Sown with Grain Drill 1967

West Florida Experiment Station
Jay, Florida


Herbicide

Lorox
Lorox
Karmex
Shell 15179
Amiben + Ramrod
Amiben
Amiben
Amchem 65-81 B
OCS 21693
OCS 21799
Planavin
Planavin
Planavin + 2,4-D A
Vernam
Treflan
Treflan
Treflan + dinitro
Treflan + Dacamine
Treflan + Daxtron
Daxtron
Daxtron
Dinitro + diphenamid
Daxtron + Ramrod
Ramrod
Ramrod + 2,4-D A
Ramrod + Lorox
CP 50-144
GS 16065
Dacthal
Dacthal + Dacamine
Dinitro
Dinitro + Daxtron
Dinitro + Dacamine
Dinitro + CIPC
Dinitro + CIPC
C 6313
C 6989
C 6989 + Patoran
U 22 326
Sirmate
Check

Cultivated Check


Time of
Lbs./A. Application


1
2
2
3/4
1 +
3
3
3
3
3

1
+
2

1
1


3 +

1
3+

6
2 +

3
3
6
6 +
6
3 +
3 +
3 +
3 +
3
3
2 +
3
6
Grass
Grass


Pre E
Pre E
Pre E
Pre E
2 Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Inc
Inc & Pre E
Inc
Inc
Inc
3 Inc & Pre E
Inc & Pre E
Inc & Pre E
Pre E
Pre E
3 Pre E
Pre E
Pre E
Pre E
1 Pre E
Pre E
Pre E
Inc
Pre E
Pre E
Pre E
Pre E
3 Pre E
3 Pre E
Pre E
Pre E
1 Pre E
Pre E
Pre E


,es


June 20
G BLW


and Weeds present:


July 6
G BLW


Crabgrass,


July 20
G BLW


7
9
7
8
9
8
8
8
8
9
10
10
10
9
10
10
10
10
10
10
10
9
9
8
8
8
8
8
9
9
10
10
9
8
8
8
7
8
7
8
goose


Aug. 11
G BLW


5 7
8 9
6 7
7 7
5 8
7 7
7 8
5 8
5 8
6 8
4 9
7 9
5 9
5 8
7 9
8 10
9 10
7 10
8 10
8 10
9 10
7 8
7 9
6 8
7 7
7 8
7 8
8 8
4 8
6 9
9 10
9 10
8 9
7 7
8 8
7 8
7 7
7 8
7 7
6 8
grass,


pursely, red weed, cocklebur, and morning glory.
Cultivated Check was not hoed.


G = Grass; BLW = Broadleaf Weeds
Pre E = Preemergence; Inc = Incorporated
Herbicide Expressed in pounds of actual material on broadcast basis.
Incorporated material applied June 6.
Preemergence material applied June 7.
Plots Two plots of each treatment.
Beans Hampton; Planted June 6 with grain drill.
Weather Moisture supply was good at time of planting and during growing
season.


- -* -" I










-7-


Yield of Soybeans Following Various Herbicidal Treatments

West Florida Experiment Station
Jay, Florida


Time of Yields in Bu./Acre
Herbicide Lbs./A. Application Rows Broadcast
Lorox 1 Pre E 38.4 35.4
Lorox 2 Pre E 38.8 39.5
Karmex 2 Pre E 36.6 38.8
Shell 15179 3/4 Pre E 37.2 36.8
Amiben + Ramrod 1 + 2 Pre E 35.1 38.1
Amiben (NH4) 3 Pre E 37.2 36.8
Amiben (acid) 3 Pre E 36.0 37.5
Amchem 65-81 B 3 Pre E 36.9 40.8
OCS 21693 3 Pre E 35.7 38.1
OCS 21799 3 Pre E 37.8 38.8
Planavin h Inc 34.2 36.1
Planavin 1 Inc 35.7 39.5
Planavin + 2,4-D A + Inc & Pre E 38.7 35.4
Vernam 2 Inc 22.7 30.0
Treflan Inc 39.0 36.1
Treflan 1 Inc 31.8 38.1
Treflan + dinitro + 3 Inc & Pre E 38.1 36.1
Treflan + Dacamine + Inc & Pre E 36.9 38.8
Treflan + Daxtron + Inc & Pre E 40.0 39.5
Daxtron Pre E 40.5 38.1
Daxtron 1 Pre E 38.4 36.8
Dinitro + diphenamid 1 + 2 Pre E 40.2 38.8
Daxtron + Ramrod + 2 Pre E 42.4 39.5
Ramrod 6 Pre E 44.0 40.2
Ramrod + 2,4-D A 2 + Pre E 37.8 34.7
Ramrod + Lorox 2 + 1 Pre E 44.2 38.8
CP 50-144 3 Pre E 40.5 40.2
GS 16065 3 Pre E 42.3 41.5
Dacthal 6 Inc 36.6 34.0
Dacthal + Dacamine 6 + Pre E 37.5 38.8
Dinitro 6 Pre E 41.5 40.8
Dinitro + Daxtron 3 + Pre E 42.1 42.2
Dinitro + Dacamine 3 + Pre E 39.6 40.2
Dinitro + CIPC 3 + 3 Pre E 41.8 40.9
Dinitro + CIPC 3 + 3 Pre E 40.2 38.8
C 6313 3 Pre E 39.7 34.7
C 6989 3 Pre E 36.0 37.4
C 6989 + Patoran 2 + 1 Pre E 37.8 37.5
U 22 326 3 Pre E 35.4 35.4
Sirmate 6 Pre E 39.3 38.8
Check 30.6 32.0
Cultivated Check 38.1 34.0

Pre E = Preemergence; Inc = Incorporated
Herbicide Expressed in pounds of actual material on broadcast basis.
Incorporated material applied June 6.
Preemergence material applied June 7.
Plots Two 4-row plots of each treatment.
Beans Hampton; Planted June 6 in rows and with grain drill.
Weather Moisture supply was good at time of planting and during
growing season.