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Permanent Link: http://ufdc.ufl.edu/UF00053599/00006
 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: 1966
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: UF00053599:00006

Full Text






West Florida Experiment Station *-*
Jay, Florida

West Florida Station Mimeo Report WFS 67-1 February 22, 1967

Herbicidal Control of Weeds in Corn, Cotton,
Peanuts and Soybeans 1966

R. L. Smith
Associate Agronomist

Data resulting from the application of various herbicides and combinations
of herbicides to corn, cotton, peanuts, and soybeans are presented in this
report. The acreage planted to peanuts is held to a constant figure by crop
control. Soybean acreage continues to expand rapidly, replacing land formerly
planted to corn, pasture, and cotton.

Preliminary tests were included with blueberries, muscadines, peaches,
plums, and tomatoes. A number of new compounds were applied at various rates
to corn, cotton, grain sorghum, peanuts, and southern peas in a screening test.

All herbicides used in these tests were applied on a broadcast basis and
the rates expressed in parentheses represent pounds of active chemical used
per acre. Types of applications used were preemergence, incorporated, and
postemergence. In addition, a "cracking time" application of various chemicals
was applied to peanuts at emergence. A farm type four-row sprayer, driven by
a power take-off from a tractor, was used to apply these chemicals. A rotary
hoe driven with a tractor power take-off was used to mix the incorporated treat-
ments with the soil at a depth of two to three inches. Four-row plots with four
replications were used in the experiments with cotton, corn, and peanuts. In
the soybean experiment, two replications were planted in rows and two were
broadcast with a grain drill. Each area was smoothed after planting and pre-
emergence sprays were applied not later than one day after planting. The soil
used for these tests was infested with uniform stands of crabgrass, watergrass,
Egyptian grass, goosegrass, Florida pursely, cocklebur, coffeeweed, redweed,
and morning glory. Sandspur, pigweed, beggerweed and Texas sandspur were present
but not in uniform stands.

Corn: Three hundred pounds of 8-24-24 and 200 pounds of ammonium nitrate
were broadcast and disked in prior to planting Coker's 67 corn on Tifton fine
sandy loam soil. The corn was spaced 16 inches in the drill in 38 inch rows.
After planting, the area was cultipacked. All herbicidal treatments were
applied as preemergence sprays the following day. Four replications of 4-row
plots were used to test 19 treatments and a check. The treatments, including
rates of actual chemical, and control data are given in Table 1.

Highest yields of approximately 67 bushels were produced by corn receiving
Atrazine (3) and Lorox (3). No toxicity was observed from 3 pounds of Lorox;
however, in previous years some stand injury has occurred on lighter textured
soils. Weed control by each of these treatments was excellent. Other treat-
ments giving good weed control and good yields of corn were: Atrazine + Lorox
(1 + 1), (1 + 1), Lorox (2), Atrazine + Caparol (1 + 1i), CIPC + Fenac
(3 + i), and Ramrod + 2,1D Amine (2 + -). Yields from these treatments were










approximately equal, ranging from 60 to 62 bushels per acre.

Cotton: Carolina Queen cotton was planted on March 29 on Greenville fine
sandy loam using a 38 inch row width. Three hundred pounds of 8-24-24 and 200
pounds of ammonium nitrate were applied broadcast and disked in prior to plant-
ing., -incorporated treatments were applied prior to planting and were mixed two
to three inches deep with a power-driven rotary hoe. After planting, the area
was smoothed. The preemergence treatments were applied as shown in Table 2.

No rain fell for several weeks after the herbicides were applied and a
number of herbicides which had given good control in previous years were not
nearly as efficient this year. Treflan (i), (1), Planavin (1), and combinations
of Treflan with Karmex (! + 1), (: + 1) and Treflan with Caparol (3/4 + 1)
gave excellent control of grasses but failed to control several species of
broadleaf weeds. Yields of cotton were not taken but data on weed control due
to herbicides are given in Table 2.

Peanuts: Dixie Runner peanuts were planted on May 12 on Greenville fine
sandy loam soil using 4 replications of 4-row plots in 38 inch rows. Incorpo-
rated treatments were applied and incorporated with a power driven rotary hoe
on the same day. All preemergence treatments were applied May 13. A good
supply of moisture was present at and after planting and a good stand was
obtained.

Treatments giving best weed control were: Daxtron (i), (1), Balan (3/4),
(1-), Planavin (1) and Weed Beads (18). Combinations of dinitro + Daxtron
(3 + 1), dinitro + diphenamid (3 + 3) and Balan + Vernam (1 + 2), also, gave
good weed control. No treatment controlled all broadleaf weeds. The addition
of Vernam (2) to Balan (1) did not improve the efficiency of Balan. This
treatment was no better than Balan (1t) alone. Vernam (3) was toxic to the
peanuts, causing stand damage. Results from the use of experimental herbicides
GS 14260 (2), GS 16065 (2), and CP 501 (21) appear promising and these com-
pounds will be tested thoroughly in 1967.

Peanuts "Cracking Time": Peanuts used in this test were planted under
the same conditions as those in the regular tests. Chemicals used in this test
were applied as the peanuts were beginning to emerge. Considerable burning of
the leaves occurred, but the peanuts recovered in a few days.

Nine treatments involving combinations with various herbicides (Table 4)
were included. Single treatments of dinitro (6) and Patoran (2) were also
included. Results indicate no outstanding control from any treatment. However,
except for Patoran (2) and U 14611 + diphenamid (4 + 3), results of these
treatments could be classed as fair to good.

Soybeans: A broadcast application of 500 pounds of 0-16-8 was disked in
prior to planting soybeans on Greenville fine sandy loam.soil. All incorporated
treatments were thoroughly mixed with the soil to a depth of 2-3 inches with a
power driven rotary hoe on June 20. Planting was followed by 0.7 inch of rain
after which the preemergence treatments were applied. There was ample moisture
for activation of the various herbicides.

The data in Tables 5 and 6 indicate that good to excellent control of











grasses was obtained with all treatments. Addition of Vernam to Treflan failed
to improve the control of broadleaf weeds, such as cocklebur4 morning glory,
and red weed. Vernam (2) (3), Lorox (h) caused appreciable damage to stands.
Tenoran (2) used as a postemergence spray when the beans were approximately 8
inches high caused rather severe burning. The beans recovered but failed to
reach the same height as the unsprayed treatment. New treatments consisting of
Daxtron (1), (3/h), Daxtron + dinitro (G + 3), dinitro + Dacamine (3 + 1),
Ramrod + Daxtron (2 + -), GS 16065 (2), (3), and CP 501h (3) gave excellent
control and will be repeated.

It was observed that herbicides were more effective with beans planted
broadcast with a grain drill than with beans planted in rows.

Fruit Crop: Treflan (i), (1), Casoron (2), (h), and Simazine (1-), (2)
were applied to peaches, plums, muscadines, and blueberries before weeds germi-
nated. Paraquat ('), (1) was applied as a contact spray after the weeds were
2-4 inches tall. Treflan and Casoron treatments were incorporated with a power
driven hoe to a depth of 2-3 inches.

Casoron (h) gave excellent control of weeds for a period of about 60 days.
At this time, weeds began to come back, but only a thin stand survived. Nut-
grass was partially controlled at the only location where it occurred. Treflan
eliminated all grasses, but failed to control red weed, cocklebur, and iron weed.
Simazine was ineffective due to lack of moisture during a period of about 30
days after spraying.

Paraquat was most effective as a contact spray, killing all annuals.
Perennials were killed back to the surface but regrowth occurred so that control
was good for about 30 days. liowing facilitates the action of Paraquat where
weed growth is 12 to 18 inches in height.










Herbicidal Control of Grass and Weeds in Corn 1966


West Florida Experiment Station
Jav. Florida


Herbicide
Atrazine
Atrazine + Lorox
Atrazine + Lorox
Lorox
Lorox
Atrazine + Caparol
Amchem 65-236
Amchem 65-237
Amchem 65-80
Amchem 65-81
Amiben + Fenac
Fenac
CIPC + Fenac
CIPC + Dinitro
Ramrod
Ramrod + 2,4-D Amine
Cotoram
Dinitro + Dacamine
Eptam + 2,4-D


Lbs ./A.

3
1+1
+
1 i+ +
2
3

1+
l+-
1
1
2 1
3 +
3+3
3
2 +
3
3+1
2+1
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
Pre E
Pre E
Pre E
Pre E


May 3
G BLW
10 9
9 8
10 9
8 8
10 10
10 9
4 4
3 4
4 3
3 3
7 3
7 5
8 8
7 5
8 4
8 8
7 7
9 7
9 4


May 18
G BLW
9 9
8 8
9 9
8 8
9 9
10 9
3 3
3 3
3 3
3 3
6 3
6 4
8 8
6 5
8 3
9 8
7 6
9 6
9 4


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


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


Yield in
Bu./Acre
67.2
60.5
59.9
61.8
66.9
62.0
46.9
49.4
36.0
38.2
49.1
38.7
61.3
55.1
50.3
60.9
53.6
52.7
51.8


T of A = Time of Application
G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Corn Cokers 67 variety, planted March 29 Stand good
All chemicals applied as preemergence spray on March 30
Herbicides Expressed in pounds of actual material on broadcast basis
Plots Four h-row plots of each treatment
Weather Limited supply of moisture at planting followed by a severe dry spell
for a period of thirty days.








-2 -


Herbicidal Control of Grass and Weeds in Cotton 1966

West Florida Experiment Station
Jay, Florida


Herbicide Lbs./A.


Karmex
Karmex + Treflan
Karmex + Treflan
Treflan
Treflan
Treflan + Caparol
Caparol
GS 16065
Planavin
Herban
Herban
Cotoran
Cotoran
Ramrod
Ramrod
Ramrod + Karmex
Sindone B
CIPC
UC 22463


1


1
+-


3/1+ i
2
2
1
3A4+ li

2
2

2
3
2
4
3
4
2+1
2
6
5


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


G = Grass
BLW = Broadleaf Weeds
Pre E = Preemergence
Inc = Incorporated
Cotton Carolina Queen, planted March 29 fair
Herbicides Expressed in pounds of actual material per acre on broadcast
basis.
Plots Four 4-row plots of each treatment
Incorporated chemicals applied March 29 Incorporated 2 to 3 inches deep
with power driven rotary hoe.
Preemergence chemicals applied March 30
Weather Limited supply of moisture at planting followed by a severe dry
spell for thirty days.


April 21
G BLW


May 5
G BLW


May 20
G BLW

3 2
8 4
10 5
9 4
10 5
10 6
5 3
3 2
10 4
3 2
5 3
5 4
7 5
5 3
6 3
5 4
4 3
6 5
3 2


June 8
G BLW

3 2
8 4
10 5
9 4
10 4
10 5
5 3
3 2
10 4
3 2
5 3
5 4
7 4
5 3
5 3
5 4
4 3
6 5
3 2








-3-
Herbicidal Control of Grass and Weeds in Peanuts 1966

West Florida Experiment Station
Jay, Florida


Herbicide

Dinitro
Dinitro
Dinitro + Diphenamid
Dinitro + Alanap
Dinitro + Amiben
Dinitro + Daxtron
Daxtron
Daxtron
Balan
Balan
Vernam + Balan
Vernam
Vernam
Amchem 65-81B
Amchem 65-373
Amchem 65-322*-
Planavin
GS 14260
GS 16065
Sesone
Patoran
Tenoran
CP 5014O
Dinitro + Ramrod
UC 22463
UC 22463
Weed Beads


May 31
Lbs./A. T of A G BLW


6
9
3+3
3+3
3.2


1
3/4
2*1
2 + 1
2
3
3
3
3
1
2
2
3
2
3
4'
3+2

6
18


June 16
G BLW


July 5 July 26
G BLW G BLW


Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


* Amchem 65-322 (Sindone B)
T of A = Time of Application
G = Grass; BLW = Broadleaf Weeds; Pre E = Preemergence; Inc = Incorporated
Peanuts Dixie Runner planted May 12 Stand good
Herbicides Rates expressed in pounds of actual material on a broadcast basis.
Incorporated materials applied May 12. All preemergence treatments
applied May 13.
Plots Four 4-row plots of each treatment
Weather Moisture was plentiful at planting and for several weeks thereafter.










Herbicidal Control of Grass and Weeds in Peanuts Sprayed
at Emergence or "Cracking Time" 1966
West Florida Experiment Station
Jay, Florida


May 31 June 16 July 5 July 26
Herbicide Lbs./A. G BL G BLW G BLW G BLW
Dinitro + Zytron 3 + 6 8 7 7 6 6 5 6 5
Dinitro + Diphenamid 3 + 3 9 7 9 6 9 6 8 5
Dinitro + Sesone 6 + 2 7 7 7 6 7 6 6 5
Dinitro + Falone 1 + 1 8 7 8 6 7 6 7 5
Dinitro + Amchem 65-81-B + 2 7 6 7 6 7 5 6 5
Dinitro + Butyrac + 7 6 7 5 7 5 6 5
Dinitro 6 8 8 7 6 7 5 7 5
U 14611 + Diphenamid +3 6 6 6 5 5 5 5 4
Paraquat + Sesone +2 9 8 8 7 6 5 6 5
Paraquat + Diphenamid + 3 9 7 8 7 8 5 7 5
Patoran 2 6 6 5 5 4 3 3 3

G = Grass
BLW = Broadleaf Weeds
Peanuts Dixie Runner, Planted May 12 Stand good
Herbicides Rates expressed in pounds of actual material per acre on
broadcast basis. All treatments applied at "cracking time,"
May 20, 1966.
Plots Four 4-row plots of each treatment
Weather Moisture in good supply at time of application.












Herbicidal Control of Grass and Weeds in Soybeans Planted in Rows 1966


West Florida Experiment Station
Jay, Florida


Herbicide


Time of
Lbs./A. Application


July 8
G BLW


July 18
G BLW


July 29
G BLW


Aug. 15
G BLW


Lorox
Lorox
Lorox
Karmex
Karmex
Amiben
Amiben
Amiben + Dinitro
Amchem 65-80
Planavin
Planavin
Vernam
Vernam
Treflan + Vernam
Treflan + Vernam
Treflan
Treflan
Treflan + Dinitr
Treflan + Karmex
Treflan + Daxtror
Daxtron
Daxtron
Ramrod + Daxtron
Ramrod
Ramrod
Patoran
CP 50-lhh
GS 16065
GS 16065
Dinitro
Dinitro + Daxtron
Dinitro + CIPC
Dinitro + Diphena
Dinitro + Dacamin
Dinitro + Butyrac
Dinitro + Zytron
Tenoran
Tenoran
GO 10614


1


I

mid
le
175


2
3
4
1
2
2
4
3+3
2
1
2
1
2
3
I+ 1
1+ 2
1i
2
1
++3
S+ 1
2+

3/4
2 +
3
4
2
3
2
3
6

3+3
3+3
3 + -1

3 + 6
3+6
3
2
4


Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc & Pre
Inc & Pre
Inc & Pre
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
Pre E
Pre E
Post E
Pre E


G = Grass; BLW = Broadleaf Weeds
Pre E = Preemergence; Inc = Incorporated; Post E = Post emergence
Beans Florida IH57-1, Planted June 21 in rows
Herbicide Expressed in pounds of actual material on broadcast basis
Incorporated material applied June 20
Preemergence material applied June 21-22
Plots Three h-row plots of each treatment
Weather Moisture supply at planting good with 0.7 inch of rain following
incorporation of herbicides and prior to planting and application of
preemergence treatments.











-6-


Herbicidal Control of Grass and Weeds in Soybeans Sown with Grain Drill 1966

West Florida Experiment Station
Jay, Florida


Herbicide


Time of
Lbs./Ai Application


July 8,
G BL


July18
G BLW


July 29
G BLW


Aug. 15
G BLW


Lorox
Lorox
Lorox
Karmex
Karmex
Amiben
Amiben
Amiben + Dinitro
Amchem 65-80
Planavin
Planavin
Vernam
Vernam
Treflan + Vernam
Treflan + Vernam
Treflan
Treflan
Treflan + Dinitrc
Treflan + Karmex
Treflan + Daxtroi
Daxtron
Daxtron
Ramrod + Daxtron
Ramrod
Ramrod
Patoran
CP 50-144
GS 16065
GS 16065
Dinitro
Dinitro + Daxtror
Dinitro + CIPC
Dinitro + Diphena
Dinitro + Dacamir
Dinitro + Butyrac
Dinitro + Zytron
Tenoran
Tenoran
GC 10614


muid
Le
175


2
3
4
1
2
2
4

2
1
2
1
2
3
I+ 1
1+ 2

1




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

6
3 + 2
3+ 3
3+ 3
3+
3 + i
3 + 6
3
2
4


Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc
Inc & Pre
Inc & Pre
Inc & Pre
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
Pre E
Pre E
Post E
Pre E


G = Grass; BLW = Broadleaf Weeds
Pre E = Preemergence; Inc = Incorporated; Post E = Postel
Beans Florida WH57-1, Planted June 21 with grain drill


nergence


Herbicide Expressed in pounds of actual material on broadcast basis
Incorporated material applied June 20
Preemergence material applied June 21-22
Plots Two plots of each treatment
Weather Moisture supply at planting good with 0.7 inch of rain following
incorporation of herbicides and prior to planting and app].icaTion of
proomergeneo tr'e.tmrnts.


1
o