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Permanent Link: http://ufdc.ufl.edu/UF00053599/00009
 Material Information
Title: Herbicidal weed control in...
Series Title: Jay, WFES Mimeo Report
Alternate title: Herbicidal control of weeds in..
Physical Description: v. : ; 28 cm.
Language: English
Creator: Smith, Rex L
West Florida Experiment Station, Jay
Publisher: West Florida Experiment Station
Place of Publication: Jay Fla
Creation Date: 1969
Publication Date: 1962-1975
Frequency: annual
regular
 Subjects
Subjects / Keywords: Herbicides -- Periodicals -- Florida   ( lcsh )
Weeds -- Control -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
statistics   ( marcgt )
serial   ( sobekcm )
 Notes
Statement of Responsibility: R. L. Smith
Dates or Sequential Designation: 1961-1974.
General Note: Title from caption.
 Record Information
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 62365501
lccn - 2005229309
System ID: UF00053599:00009

Full Text




WEST FLORIDA EXPERIMENT STATION
Jay, Florida
February 16, 1970

WFES Mimeo Report 70-3 -- *

HERBICIDAL CONTROL OF WEEDS IN CORN, COTTON,
GRAIN SORGHUM, PEANUTS, AND SOYBEANS 1969
1/
R. L. Smith --


The use of herbicides on row crops grown in this area is reported in this
publication. The crops used in these tests were: corn, cotton, grain sorghum,
peanuts, and soybeans. A test using herbicides on certain vegetable crops was,
also, completed. These vegetable crops were: snap beans, lima beans, southern
peas, cantaloupes, cucumbers, and watermelons.

Rates of herbicides used are expressed in pounds of active chemical applied
per acre on a broadcast basis. Numbers in parenthesis following the names of
herbicides, also, indicate pounds of active material per acre. These materials
were applied by a farm type 4 row sprayer driven by a power take-off from a tractor.
Incorporated treatments were thoroughly mixed with the top 2-3 inches of soil prior
to planting with a rotary hoe. Preemergence treatments were applied as soon as
practical after planting and before emergence of the plants. Twelve "cracking time"
treatments using dinitro or combinations of dinitro and other chemicals were applied
as the peanuts were emerging. Four replications with 4 rows of each treatment were
included with each crop. In the soybean test, one-half of each replication was
planted with a grain drill. Cultivated and non-cultivated check plots were included
in each test. All tests except the peanut trials were located in the same area on
Tifton fine sandy loam soil. Crabgrass, water grass, Goose grass, Florida pusley,
cocklebur, red weed, and morning glory were present in uniform stands. Sandspur,
Egyptian grass, sicklepod, pig weed, beggar weed, nightshade, and bristly starbur
occurred as irregular infestations. The soil type for the peanut test was Norfolk
fine sandy loam. Crabgrass, water grass, Goose grass, Florida pusley, and beggar
weed were present in uniform stands. Cocklebur, sicklepod, morning glory, and red
weed were present but not in uniform stands.

Corn.- Twenty-one treatments were included in the corn test including two check
plots, one of which was cultivated. No other cultivation was used. The fertilizer
treatment, a uniform application of 300 pounds of 8-24-24 and 200 pounds of ammonium
nitrate, was applied broadcast and disced in prior to planting. Funk's 5858 corn
was planted with a 16 inch spacing in 36 inch rows. A heavy rain followed planting
and poor germination was obtained. The corn was replanted with a stripped planter
which knifed the corn in without much disturbance of the surface. An excellent
supply of moisture was present throughout the growing season. Fourteen single
herbicides and 5 combinations of herbicides were included.

Good and persistent control of weeds and grasses was shown by Atrazine (3),
Atrazine + Lorox (1 + 1), Lorox (2), Sutan (4), Lasso (1)(3), Lasso + Lorox
(1 + 1), Shell 15418 (2)(4), Maloran (1)(3). Yields from these treatments varied
from 59 to 64 bushels as compared to 62 for the cultivated check. The yield of the

1/
Associate Agronomist,







-2-


check treatment (no cultivation) was 35 bushels. This would indicate an increase
of 25 bushels or more for the better treatments and for cultivation. A number of
other treatments produced yields of 50 to 58 bushels per acre Tables 1 and 1A,

Cotton.- The cotton test was fertilized with a broadcast application of 300
pounds of 8-24-24 and 200 pounds of ammonium nitrate which was disced in before
planting. All incorporated treatments were thoroughly mixed with the soil with a
rotary hoe before planting. Carolina Queen cotton was planted at the recommended
rate in 36 inch rows. All preemergence treatments were applied as soon as possible
after planting and before germination. A good supply of moisture was present and
a good stand was obtained. Rainfall was good resulting in a good supply of moisture
during the growing season. Thirteen treatments using single herbicides and six
treatments using combinations of herbicides were applied. A check and a cultivated
check plot were included. No other cultivation was used. Yields were not taken.

Initial control of grass was good by most chemicals. One pound of Treflan
caused appreciable stand damage. Treflan () and Planavin (1) gave good control of
grasses but failed to control broadleaf weeds. Addition of dinitro (3) to Treflan
() and Planavin (k) failed to improve their performance. The effectiveness of
Lasso (1) was increased by addition of dinitro (3). The best overall control of
both grasses and broadleafed weeds was by Caparol (4), Cotoran (4), and Lasso (3).
The lower rates of Caparol (2), Cotoran (2), and Lasso (1) did not give the
persistent control desired. The data are shown in Table 2.

Grain Sorghum.- Herbicidal research with grain sorghum was discontinued several
years ago due to lack of interest by farmers. However, a good production program
by the West Florida Experiment Station has caused considerable increase in acreage
by the farmers and a test was included in the 1969 season.

A broadcast application of 300 pounds of 8-24-24 and 200 pounds of ammonium
nitrate was disced into Tifton fine sandy loam soil before planting B.R. 64 grain
sorghum. Sixteen treatments using single herbicides and three treatments using
combinations of herbicides were included. Treatments using Shell 15418 ()(1)
were incorporated. Treatment number 5, dinitro (3), was applied when the sorghum
was in the needle stage, approximately inch high.

Initial control was good for all treatments. After several weeks, the growth
of the sorghum became quite dense and smothered weeds which might have come on if
there had been sufficient light for growth. Treatments producing yields of 2 tons
of grain per acre were: Bay 86791 (), Lasso + dinitro (1 + 3), Maloran (3),
Shell 15418 (1), and ACD15M (2). The yield of the cultivated check, 3500 pounds,
was equalled or exceeded by 16 of the herbicide treatments Tables 3 and 3A.

Peanuts.- The regular test and the cracking time test for peanuts was located
on Norfolk fine sandy loam soil. A fertilizer treatment of 500 pounds of 0-14-1.4
was broadcast and disced into well prepared soil. Dixie Runner peanuts were
planted in 36 inch rows. Twenty-six treatments including single herbicides and
combinations of herbicides were used in the regular test. Incorporated treatments
were thoroughly mixed with the soil to a depth of 2 to 3 inches immediately before
planting. All preemergence treatments were applied as soon after planting as
possible. A cultivated and non-cultivated check treatment were included for
comparison. No yields were taken.







-3-


The data in Table 4 indicate that initial control of grasses was good with
most herbicides. Balan (3/4)(1), Balan + dinitro (3/4 + 3), Planavin (1),
Planavin + dinitro ( + 3), Vernam (2), Preforan (3)(4), RP17623 (1)(1), Lasso
(1)(3), Lasso + dinitro (1 + 3), and dinitro + Diphenamid (3 + 3) gave good
control of grassy weeds. No treatment furnished satisfactory control of beggar
weed, however RP17623 (1)(WI) and Bay 86791 (1) gave the best control for this weed.

"Cracking Time".- Cracking time sprays consisting of dinitro or combinations
of other herbicides were applied as peanuts were emerging. Twelve treatments and
check (table 5) indicate godd control for all treatments.

Soybeans.- Soybeans were planted in well prepared Tifton fine sandy loam with
excellent moisture and a good stand was obtained. Four replications of 42 treat-
ments were included with of each planted with a grain drill for a broadcast
effect. A uniform application of 500 pounds of 0-14-14 was disced in prior to
planting. All incorporated herbicides were thoroughly mixed into the soil with a
rotary hoe to a depth of 2-3 inches before planting. Preemergence treatments were
applied as soon as possible after planting and not later than the following day.
Yields were taken.

Two new chemicals, Bay 94337 (1)(2) and VC438 (1)(3), show promise for
controlling cockleburr as a preemergence spray. Cockleburr control by these
chemicals was considerably better than from the other herbicides in a list of 40
treatments. Highest yields in the test were produced by treatments receiving Bay
94337 (1h) on drilled and broadcast beans and VC438 (3) planted in drill. The
yield data indicate that highest yields were produced by treatments receiving
herbicides with broadleaf activity. Treflan and Planavin gave good control of
grassy weeds, but poor control of broadleaf weeds and both treatments produced low
yields. Weed control was better with broadcast beans and was probably due to
shading as groundcover was attained earlier by the broadcast beans. Yields in most
instances were higher from the broadcast beans. Treflan at 1 pound reduced the
stand of beans about 20%. Toxicity was also observed on treatments receiving Bay
86791 (1) and RP17623 (1)(tables 6, 7 and 7A),

Vegetable Crops.- Ruston fine sandy loam soil was fertilized with a broadcast
application of 600 pounds of 4-12-12 fertilizer. Six vegetable crops were planted
in each of the plots. Each plot included 4 rows, with one row each of lima beans,
snap beans, southern peas, and a mixed row of cantaloupe, cucumbers, and water-
melons. The test consisted of 16 herbicidal treatments plus a check and a
cultivated check. Four replications of each treatment were included.

Amchem 65-81B (2) showed good tolerance by all crops and furnished good weed
control for 6 to 7 weeks. Dacthal (8), Planavin ()(1), Lasso (1)(3) gave good
weed control with fair to good tolerance by all crops. Preforan (3)(4) and
Treflan () also furnished good weed control but were toxic to the cucurbits.
VC438 (1)(3) was not toxic to lima beans, snap beans, and southern peas but was
toxic to the cucurbits. Weed control by this herbicide was not persistent
(table 8).












Herbicidal Control of Grass and Weeds in Corn 1969

West Florida Experiment Station
Jay, Florida


Herbicide
Atrazine
Atrazine + Lorox
Lorox
Lorox
Lorox + CIPC
Dinitro + CIPC
Dinitro Dacamine
Sutan
Lasso
Lasso
Lasso + Lorox
Shell 15418
Shell 15418
VC 438
VC 438
ACD 15M
ACD 15M
Maloran
Maloran
Check

Cultivated Check


May 19
Lbs./A. T of A G BLW


3
1% + 1%
1
2
1+3
3+3
3 +
4
1
3
1 + 1
2
4
13
3
2
3
1l
3


Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Pre E
Pre E
Pre E
Inc
Inc
PreE
Pre E
Pre E
Pre E
Pre E
Pre E


Weeds Present:


10
10
9
10
10
9
9
10
10
10
10
9
10
9
10
8
9
9
10
Goose


9
9
9
9
9
9
9
7
8
9
9
8
9
8
9
7
8
8
9
grass,


June 18
G BLW


July 16
G BLW
9 9
9 9
7 7
9 8
7 8
4 6
7 9
9 7
7 8
10 8
9 8
8 8
9 9
7 7
8 8
6 7
8 8
7 7
9 8


July 21
G BLW
9 8
9 9
7 7
9 8
5 7
4 6
7 9
9 8
8 7
9 9
8 8
7 7
9 8
7 7
7 8
5 6
7 7
7 5
9 7


crabgrass, barnyard grass,


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


T of A = Time of Application
G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence; Inc = Incorporated
Corn: Funks 5858 variety planted April 1 and replanted April 21.
Sutan and Shell 15418were incorporated March 31. All other herbicides were
applied as preemergence spray April 2.
Rates of herbicides are expressed in pounds of actual material on a broadcast
basis.
Weather: Moisture was plentiful at time of planting and throughout the
growing season.













Corn Yields following Herbicide Treatments

West Florida Experiment Station
Jay, Florida


Herbicide
Atrazine
Atrazine + Lorox
Lorox
Lorox
Lorox + CIPC
Dinitro + CIPC
Dinitro + Dacamine
Sutan
Lasso
Lasso
Lasso + Lorox
Shell 15418
Shell 15418
VC 438
VC 438
ACD-15M
ACD-15M
Maloran
Maloran
Check
Cultivated Check


Lbs./A.
3
1 + i1
1
2
1+3
3+3
3 + 3
3 + j
4
1
3
1-1/3+.7
2
4
1!
3
2
3
1
3


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


R-1
59.7
45.6
51.9
48.1
52.3
56.8
47.3
48.1
42.3
57.3
61.0
70.5
62.6
47.7
64.3
48.1
69.3
71.8
52.3
37.3
50.2


Yield in
R-2
65.5
70.5
53.9
56.0
61.0
46.9
66.8
67.2
47.3
58.1
48.1
56.4
63.4
47.3
39.8
52.3
53.9
47.7
63.4
37.3
73.4


Bushels Per Acre


R-3
68.0
75.9
51.4
58.1
58.1
49.8
61.4
50.6
74.3
56.0
59.3
47.7
42.3
38.6
42.3
56.4
47.3
56.0
66.6
23.2
58.5


R-4
61.4
50.2
64.3
70.9
60.2
58.5
53.5
73.0
76.7
69.7
81.3
75.5
85.5
73.0
79.2
56.0
66.8
62.6
68.9
43.6
67.2


Average
63.7
60.6
55.4
58.3
57.9
53.0
57.3
59.7
60.2
60.3
62.4
62.5
63.5
51.7
56.4
53.2
59.3
59.5
62.9
35.4
62.3


T of A = Time of Application
Variety: Funks 5858 planted April 1
Herbicides: Rates of herbicides are
broadcast basis.


and replanted April 21
expressed in pounds of actual chemical on a


Weather: Moisture was plentiful at planting and throughout the growing season.


Rank
1
6
17
13
14
19
15
10
9
8
4
5
2
20
16
18
12
11
3
21
7


- --








-2-


Herbicidal Control of Grass and Weeds in Cotton 1969

West Florida Experiment Station
Jay, Florida


Herbicide
Treflan
Treflan
Treflan + Caparol
Treflan + KN3
Treflan + dinitro
Planavin
Planavin
Planavin + dinitro
Caparol
Caparol
Cotoran
Catoran
Lasso
Lasso
Lasso + dinitro
VC438
VC438
CIPC + dacthal
CIPC + dinitro


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

1
2 + 3
2
4
2
4
1
3
1+ + 3
1%
3
3+5
3+3


Time of
Application
Inc
Inc
Inc-Pre E
Inc-Pre E
Inc-Pre E
Inc
Inc
Inc-Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E


May 19
G BLW
10 7
10 8
10 8
10 7
10 9
9 7
10 8
9 8
10 9
10 9
8 9
10 9
9 8
10 9
10 9
10 8
10 9
9 7
9 8


June 18
G BLW
8 7
10 7
9 7
8 7
8 8
8 6
9 7
7 6
6 6
9 7
8 6
9 8
7 7
9 8
8 7
6 5
8 6
8 6
7 5


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


July 23
G BLW
7 3
10 5
9 3
8 3
8 3
6 3
8 4
6 4
3 3
8 5
3 3
8 7
5 2
8 7
6 4
3 2
4 2
7 2
3 1


Check Weeds present: Goose grass, crabgrass, pursely, red weed,
cocklebur, morning glory, and Texas sandbur.
Cultivated Check Cultivated Check was not hoed.
G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Inc = Incorporated
Incorporated chemicals applied March 31 Incorporated 2 to 3 inches deep with
power driven rotary hoe.
Preemergence chemicals applied April 2.
Cotton Carolina Queen, planted March 31 Stand good.
Herbicides Expressed in pounds of actual material per acre on broadcast basis.
Plots Four 4-row plots of each treatment.
Weather Good supply of moisture at planting and during growing season.











Herbicidal Control of Grass and Weeds in Grain Sorghum 1969

West Florida Experiment Station
Jay, Florida


Herbicide

Propazine
Igran
Dinitro
Dinitro
Dinitro
Dinitro + Dacamine
ACD-15M
ACD-15M
Bay 94337
Bay 86791
Shell 15418
Shell 15418
Lasso
Lasso
Lasso + dinitro
Cotoran
Cotoran + Propazine
Maloran
Maloran
Check

Cultivated Check


Lbs./A.

2k
2
3
4k
3
3 +
2
3
4

1
2
14
3
14 + 3
2
1+1
14
3


T of A


Pre
Pre
Pre
Pre
Needle
Pre
Pre
Pre
Pre
Pre
Inc
Inc
Pre
Pre
Pre
Pre
Pre
Pre
Pre


May 19
G BLW


June 17
G BLW


E
E
E
E
Stage
E
E
E
E
E


Weeds Present: Goose grass, crabgrass,


July 2
G BLW


9 9
9 10
8 8
9 8
8 8
8 8
8 8
9 9
9 9
8 8
8 9
9 8
9 9
9 9
9 10
9 9
9 9
9 9
9 10
barnyard


8
9
8
9
8
9
8
9
8
8
8
8
9
9
9
9
9
9
0
grass,


July 22
S BLW
9 9
10 9
8 7
9 9
8 8
9 8
8 8
9 9
9 9
8 9
9 8
8 8
9 8
9 8
10 8
9 9
10 9
9 9
10 9


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


T of A = Time of Application
G = Grass
BLW = Broadleaf Weeds
Pre E Preemergence
Variety: DeKalb BR-64 planted April 1
Herbicides: Shell 15418 was incorporated March 31. All other herbicides were
applied as preemergence spray April 2. Rates of herbicides are
expressed in pounds of actual material on a broadcast basis.
Weather: Moisture was plentiful at time of planting and throughout the
growing season.













Yields of Grain Sorghum Following Herbicidol Treatments

Guest Florida Experiment Station
Jry, Florida


Pounds of Grain Sorghum


Herbicide Lbs./A. T of A
Propazine 2 Pre E
Igran 2 Pre E
Dinitro 3 Pre E
Dinitro 4 Pre E
Dinitro 3 Needle Stage
Dinitro +Dacamine 3 -+- Pre E
ACD-15M 2 Pre E
ACD-15M 3 Pre E
Bay 94337 2 Pre E
Bay 86791 Pre E
Shell 15418 1 Inc
Shell 15418 2 Inc
Lasso 1 Pre E
Lasso 3 Pre E
Lasso + dinitro 1 + 3 Pre E
Cotoran 2 Pre E
Cotoran + Propazine 1 + 1 Pre E
Maloran 1 Pre E
Maloran 3 Pre E
Check
Cultivated Check
T of A = Time of Application
Pre E = Preemergence Inc = Incorporated
Variety DeKalb BR-64 planted April 1, 1969 -
Herbicides = Rates of herbicides are expressed
broadcast basis.


R-1
3587
3758
3758
4100
2221
3416
4100
3929
3416
4441
4271
3075
3758
4100
4783
3246
4100
4271
3929
2221
2392


R-2
4271
4270
2733
4271
4271
3587
3872
3929
2733
3587
3929
4271
3246
3758
4271
3587
2562
4100
4100
3587
3929


R-3
3758
4100
4441
3929
3246
4100
4100
3929
3416
4100
4271
3246
3416
3758
3758
3587
3758
3758
4441
3075
3759


R-4
3416
2587
3416
3116
3587
3416
3416
4100
4100
4100
3587
4271
3758
3587
3416
2562
3929
3578
3758
4271
3929


Per Acre
Average
3758
3929
3587
3929
3331
3630
3871
3972
3416
4057
4015
3716
3545
3801
4057
3246
3587
3929
4057
3289
3502


stand good
in pounds of actual chemical on a


Weather = Moisture was plentiful at time of planting and throughout the growing
season


Ran!,
11
6
14
7
19
13
9
5
18
1
4
12
16
10
2
21
15
8
3
20
17


--













Herbicidal Control of Grass and Weeds in Peanuts 1969

West Florida Experiment Station
Jay, Florida


Herbicide
Dinitro
Dinitro
Balan
Balan
Balan + dinitro
Planavin
Planavin
Planavin
Planavin + dinitro
Planavin + CIPC
Vernam
Amchem 65-81B
Preforan
Preforan
RP 17623
RP 17623
ACD-15M
ACD-15M
Lasso
Lasso
Lasso + dinitro
Dinitro + Dephenamid
Bay 86791
Bay 86791
VC 483
VC 438


Time of
Lbs./A. Application


6
9
3/4
1
3/4 + 3

1
1
S+3
S+3
2
3
3
43
1
1
2
3
1,
3

3 + 3

1
12
2


Pre E
Pre E
Inc
Inc
Inc-Pre E
Inc
Inc
Pre E
Inc-Pre E
Inc-Pre E
Inc
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E


May 21
G BLW
9 7
10 8
10 7
10 8
10 9
8 7
9 8
9 9
9 7
9 7
10 6
9 6
9 6
10 7
10 8
10 9
6 7
8 8
9 7
10 9
10 9
9 8
8 8
9 8
7 7
8 8


June 18
G BLW


July 14
G BLW
8 5
8 6
9 4
10 5
9 4
7 4
8 4
8 5
8 4
8 4
9 3
8 5
9 5
9 5
10 6
10 6
4 5
5 6
9 4
9 6
9: 4
9 4
8 5
9 7
6 5
7 6


Aug. 1
G BLW
6 4
6 5
8 3
9 4
7 3
5 2
7 3
8 3
7 2
6 2
8 2
6 5
7 3
8 4
8 5
8 6
4 6
3 6
8 3
9 5
9 3
8 3
6 3
8 6
5 4
6 5


Pre E = Preemergence; Inc = Incorporated
G = Grass; BLW = Broadleaf Weeds
Herbicides: Rate expressed in pounds of actual material on a broadcast basis.
Incorporated materials applied April 28. All preemergence treatments
applied April 29.
Peanuts: Early Runner planted April 28 Stand good.
Plots: Four 4-row plots of each treatment.
Weather There was a good supply of moisture at planting and throughout the
season.


_ _


--- ---------
- --













Herbicidal Control of Grass and Weeds in Peanuts Sprayed
at Emergence or "Cracking Time" 1969

West Florida Experiment Station
Jay, Florida


May 28 June 19 July 14 Aug. 1
Herbicide Lbs./A, G BLW G BLW G BLW G BLW
Dinitro 43 9 9 9 9 9 7 8 6
Dinitro 6 10 9 9 8 8 8 8 7
Dinitro + Falone 1 + 2 10 9 10 9 10 9 9 9
Dinitro + Sesone 1 + 2 10 8 9 9 9 7 8 6
Enide + Dinitro 1 + 2 10 10 10 8 10 6 9 3
Dinitro + Lasso 1k + 1k 10 10 10 9 10 8 10 6
Dinitro + Preforan 11 + 3 10 10 10 9 10 9 10 9
Dyanai* 1 + 3 10 8 9 8 9 7 8 4
Dinitro + Dacamine 1k + 10 8 8 7 8 5 8 3
Dinitro + CIPC 2 + 2 10 8 9 8 9 7 9 4
Dinitro + RP 17623 1 + 1 10 10 10 9 10 9 10 8
Dinitro + Balan** 12 + 3/4 10 8 9 8 9 7 8 6

* 1-1/2 pounds dinitro + 3 pounds Alanap
** Incorporated
G = Grass
BLW = Broadleaf Weeds
Peanuts: Early Runner planted April 28 Stand good.
Herbicides: Rates expressed in pounds of actual material per acre
on broadcast basis. All treatments were applied at
"cracking time" or emergence, May 8, 1969.
Plots: Four 4-row plots of each treatment.
Weather: Moisture was plentiful at planting and throughout the
growing season.







-6-


Herbicidal Control of Grass and Weeds in Soybeans Planted in Rows 1969

West Florida Experiment Station
Jay, Florida


Time of


June 19 June 30 July 14


July 21


Herbicide Lbs./A. Application G BLW G BLW G BLW G BLW
Lorox 1 Pre E 8 9 7 6 8 7 7 7
Lorox 2 Pre E 9 9 8 9 9 9 9 8
Lorox + CIPC 1 + 3 Pre E 9 9 8 8 9 9 8 8
Treflan Inc 10 6 9 5 8 5 7 4
Treflan 1 Inc 10 6 10 5 10 3 10 3
Treflan + dinitro 2 + 3 Inc & Pre E 10 9 10 8 10 5 10 5
Dyanap 1 + 3 Pre E 9 9 8 8 8 8 8 7
Planavin Inc 9 7 8 4 8 4 7 4
Planavin 1 Inc 10 7 9 5 9 4 8 4
Planavin + dinitro + 3 Inc & Pre E 10 9 10 8 9 7 8 6
Planavin + CIPC + 3 Inc & Pre E 10 8 9 7 10 6 9 6
CIPC + Dacthal 3 + 5 Pre E 9 8 9 6 9 5 8 4
ialoran 1I Pre E 8 8 7 7 7 5 6 5
daloran 3 Pre E 9 9 9 8 9 8 9 7
Preforan 3 Pre E 9 7 7 6 5 4 4 4
Preforan 4 Pre E 9 8 8 7 7 6 7 6
Lasso 1 Pre E 10 8 10 6 9 5 8 1
Lasso 3 Pre E 10 8 10 7 10 6 10 5
Lasso + Lorox 1 + .7 Pre E 10 8 10 7 10 6 10 6
Lasso + dinitro 1 + 3 Pre E 10 9 10 9 10 8 10 7
Lasso + CIPC 1 + 3 Pre E 10 9 10 9 9 8 8 7
Amiben 3 Pre E 9 8 8 6 8 6 7 5
Amchem 65-81B 3 Pre E 9 7 9 4 3 3 6 3
Amchem 65-81B + Lorox 2 + 1 Pre E 9 9 9 8 9 7 8 6
Dinitro 6 Pre E 10 9 9 9 8 8 8 7
Dinitro + CIPC 3 + 3 Pre E 9 8 8 7 7 6 6 5
Dinitro + Dacamine 3 + 1 Pre E 9 8 8 7 8 7 7 7
Dinitro + Diphenamid 1 + 2 Pre E 9 7 8 5 8 5 6 4
Bay 86791 1 Pre E 9 9 9 7 8 8 8 6
Bay 86791 1 Pre E 10 9 9 8 9 7 9 6
Bay 94337 1 Pre E 10 9 10 9 10 8 10 7
Bay 94337 1 Pre E 10 10 10 10 10 10 10 10
VC-438 1i Pre E 8 8 6 7 6 5 5 4
VC-438 3 Pre E 9 9 8 8 8 8 8 8
RP 17623 3/4 Pre E 9 8 8 7 8 8 8 7
RP 17623 1 Pre E 10 9 9 8 9 7 9 6
ACD-15MI 2 Pre E 6 5 3 3 3 3 3 2
ACD-15M 3 Pre E 6 6 4 4 4 4 3 3
Dacthal 8 Pre E 9 6 8 4 8 4 6 3
Dacthal + Lorox 6 + 1 Pre E 9 9 9 8 9 8 8 7
Check Grasses and Weeds Present: Crabgrass, goose grass,
Egyptian 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.
Incorporated material applied Hay 23 Preemergence material applied May 2
Plots: Three 4-row plots of each treatment.
Beans: Hampton planted May 23 in rows.
Weather: Moisture plentiful at planting and throughout the growing season.









Herbicidal Control of Grass and Weeds in Soybeans Sown with Grain Drill 1969

West Florida Lxperiment Station
Jay, Florida


Time of June 19 June 30 July 14 July 31
Herbicide Lbs./A. Application G BLW G BLW G BLW G BLW
Lorox 1 Pre E 9 9 9 8 9 8 8
Lorox 2 Pre E 10 9 10 9 9 9 9 9
Lorox + CIPC 1 + 3 Pre E 9 9 9 9 9 9 9 8
Treflan Inc 10 8 9 8 9 7 7 6
Treflan 1 Inc 10 7 10 7 10 5 10 4
Treflan + dinitro + + 3 Pre E 10 9 10 9 10 6 10 6
Dyanap 1 + 3 Pre E 9 9 10 9 9 8 8 8
Planavin Inc 9 8 9 7 9 6 8 5
Planavin 1 Inc 9 9 9 8 9 7 8 6
Planavin + dinitro + 3 Inc & Pre E 10 9 10 9 9 8 8 7
Planavin + CIPC + 3 Inc & Pre E 10 9 10 7 9 7 9 7
CIPC + Dacthal 3 + 5 Pre E 9 8 9 9 9 7 8 6
Maloran 1 Pre E 9 9 10 8 9 7 8 7
Aaloran 3 Pre E 10 9 10 9 10 8 9 8
Preforan 3 Pre E 9 8 9 8 8 6 5 5
Preforan 41 Pre E 10 9 9 9 9 7 8 6
Lasso 1 Pre E 10 9 10 8 9 7 8 7
Lasso 3 Pre E 10 9 10 9 10 7 10 6
Lasso + Lorox 1i + .7 Pre E 10 9 10 9 10 6 10 6
Lasso + dinitro 1 + 3 Pre E 10 10 10 10 10 8 10 8
Lasso + CIPC 1 + 3 Pre E 10 9 10 9 9 8 9 7
Amiben 3 Pre E 10 9 10 9 9 8 8 6
Amchem 65-81B 3 Pre E 10 8 9 8 9 7 7 6
Amchem 65-81B + Lorox 2 + 1 Pre E 9 9 10 9 10 7 9 6
Dinitro 6 Pre E 10 9 10 9 9 9 8 9
Dinitro + CIPC 3 + 3 Pre E 9 9 9 9 8 8 7 6
Dinitro + Dacamine 3 + Pre E 9 9 9 8 8 8 7 7
Dinitro + Diphenamid 1+ + 2 Pre E 9 9 9 8 9 6 8 5
Bay 86791 1 Pre E 10 9 9 9 8 8 8 6
Bay 86791 1 Pre E 10 9 10 9 10 7 9 6
Bay 94337 1 Pre E 10 10 10 10 10 8 10 7
Bay 94337 1 Pre E 10 10 10 10 10 10 10 10
VC-438 1i Pre E 9 8 9 9 9 8 7 7
VC-438 3 Pre E 10 9 10 9 9 9 9 7
RP 17623 3/4 Pre E 10 8 9 8 9 8 9 7
RP 17623 1 Pre E 10 9 10 9 9 8 9 6
ACD-15M 2 Pre E 7 7 7 8 7 4 5 4
ACD-15M 3 Pre E 7 6 7 7 7 6 5 5
Dacthal 8 Pre E 8 7 9 8 9 6 7 5
Dacthal + Lorox 6 + 1 Pre E 10 8 10 8 10 8 9 7
Check Grasses and Weeds Present: Crabgrass, goose grass,
Egyptian grass, purely, red weed, cocklebur, and
morning glory.
Cultivated Check Cultivated Check was not boed.
G = Grass; BLW = Broadleaf Weeds; Pre E = Preemergenice; Inc = Incorporated
Herbicide: E-tpressed in pounds of actual material on broadcast basis.
Incorporated material applied May 23 Preemergence material applied Hay 23.
Plots: Three 4-row plots of each treatment.
Beans: Hampton planted May 23 with grain drill.
Weather: Moisture plentiful at planting and throughout the growing season.









Yield of Soybeans Following Herbicidal Treatments 1969
West Florida Experiment Station
Jay, Florida


Treatment
Bay 94337
VC 438
Bay 94337
Lorox
Dyanap
Lorox + CIPC
Lasso + CIPC
Dinitro
Amiben
Lasso + dinitro
Lorox
Cultivated Check
Bay 86791
Maloran
Dinitro + CIPC
RP 17623
Treflan + dinitro
VC 438
Dacthal + Lorox
Maloran
Planavin
Lasso
Amchem 65-81B + Lorox
Planavin + CIPC
Planavin + dinitro
Preforan
Bay 87691
Dinitro + Dacamine
Preforan
Amchem 65-81B
Lasso
RP 17623
CIPC + Dacthal
Dinitro + diphenamid
ACD-15M
Dacthal
Planavin
Treflan
Lasso + Lorox
ACD-15M
Check
Treflan


Lbs./A.
14
3
1
2
1 + 3
1%+3
14 + 3
6
3
14 + 3
1

14
3
3+3
14
+ 3
14
6+1
14
2

3
2+1
3 +3

1+3

3





8
14
3+-
44









13 + .7
3
14
3/4
3+5
14 +2
3
8
1

14 + .7
2

1


T of A
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E

Pre E
Pre E
Pre E
Pre E
Inc-Pre E
Pre E
Pre E
Pre E
Inc
Pre E
Pre E
Inc-Pre E
Inc-Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Inc
Pre E
Pre E

Inc


Bushels Per Acre
Broad-
Drill cast
40.8 42.5
40.3 32.8
37.2 32.4
35.5 38.6
35.5 38.9
35.2 32.0
35.0 40.9
34.7 37.5
34.0 38.7
32.8 41.3
32.6 33.2
32.1 27.6
31.3 36.7
30.5 36.7
30.4 32.8
30.4 33.5
30,1 38.0
30.1 33.2
30.0 31.5
29.2 31.2
28.4 28.7
28.2 28.9
28.0 28.2
27.6 27.0
27.2 27.6
27.1 31.3
26.9 32.7
26.0 33.4
25.4 31.6
25.1 27.7
24.8 30.1
24.8 37.4
23.5 31.0
23.1 33.5
22.8 24.2
22.0 24.3
20.7 28.2
19.8 28.8
19.5 29.9
17.8 27.4
16.9 21.9
16.0 18.7


Rank
Broad-
Drill cast
1 1
2 18
3 20
4 6
5 4
6 21
7 3
8 8
9 5
10 2
11 15
12 36
13 11
14 10
15 17
16 13
17 7
18 16
19 23
20 25
21 31
22 29
23 33
24 38
25 35
26 24
27 19
28 14
29 22
30 34
31 27
32 9
33 26
34 12
35 40
36 39
37 32
38 30
39 28
40 37
41 41
42 42


T of A = Time of Application
Variety: Hampton 266A Stand Good


Herbicide:


Herbicides used in treatments
broadcast basis.


are expressed in pounds per acre on


Weather: Moisture plentiful at planting and throughout the growing season.











Uerbicidal Control of Grass and Weeds in Certain Vegetable Crops 1969

West Florida Experiment Station
Jay, Florida


May 20 June 2 June 18 July 2
Herbicide Lbs./A. T of A G BLW G BLW G BLW G BLW
VC 438 1-1/2 Pre E 8 9 6 7 5 5 2 3
VC 438 3 Pre E 10 10 8 8 4 6 2 5
Planavin 1/2 Inc 9 10 8 8 7 8 5 6
Planavin 1 Inc 10 10 10 9 8 9 6 7
Preforan 3 Pre E 9 10 7 8 5 7 4 6
Preforan 4-1/2 Pre E 9 10 8 9 5 9 4 6
Diphan 4 Pre E 9 10 8 8 7 8 7 6
Lasso 1-1/2 Pre E 9 10 7 7 5 6 4 4
Lasso 3 Pre E 10 10 8 9 6 8 6 6
Shell 15418 1 Inc 7 8 5 7 3 5 2 3
Shell 15418 2 Inc 9 9 7 6 4 4 3 4
Treflan 1/2 Inc 8 8 8 8 8 7 5 5
Amchem 65-81B 2 Pre E 9 10 8 9 6 6 3 4
Dacthal 8 Pre E 9 10 8 9 8 9 8 9
Bay 94337 1/4 Pre E 9 9 8 6 3 4 2 2
Bay 94337 1/2 Pre E 10 9 7 7 4 5 4 4

T of A = Time of Application
G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Inc = Incorporated
Herbicides: Rates expressed in pounds of actual material per acre on a
broadcast basis. Incorporated materials applied April 28 -
Preemergence materials applied April 29.
Plots: Four 4-row plots of each treatment each plot contained one
row each of snap beans, lima beans, southern peas and a
mixed row of cantaloupes, cucumbers and watermelons.