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Permanent Link: http://ufdc.ufl.edu/UF00053599/00011
 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: 1971
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: UF00053599:00011

Full Text



AGRICULTURAL RESEARCH CENTER
-_ a Jay, Florida

C WFES Mimeo 72-2 February, 1972

HERBICIDAL CONTROL OF WEEDS IN CORN, COTTON, GRAIN SORGHUM,
PEANUTS, SOYBEANS, AND VEGETABLES 1971

R. L. Smit HUME LIBRARY

Results from experiments with herbi ides applied to row crops grown in
this area are reported in this publication. e majn owgo rops grown n this
area are corn, soybeans, cotton, peanuts, and rain rhdum. Acreage p anted to
these crops varies over a period of years. I recent years soybeans ha e become
an important crop with a corresponding increase ,Aare$hi, gl gum is
also becoming more popular with farmers. A te U 'u g tb1cides @ tain
vegetable crops was also completed. These vege aDe crops were: snap beans,
lima beans, southern peas, cantaloupes, cucumbers, and watermelons.

These experiments have been conducted for several years. A consider-
able number of experimental herbicides are included in the program each year.
If an experimental herbicide shows no promise for use on these crops; it is
dropped from the list. Older herbicides are discontinued as they are replaced
by new and more efficient chemicals. Practically all of the herbicides now
recommended for use on field crops, were entered in the tests as numbered
chemicals. After several years of favorable results, the producer obtains a
label; the herbicide is named and is ready for sale to farmers. The label
designates the crops on which the chemical can be applied and the rates recom-
mended.

The herbicides used in these tests were applied with a CO2 sprayer
which furnishes a constant rate of pressure for all chemicals. The pounds of
actual chemical used are on a broadcast basis per acre. These rates and the
time of application are listed for each chemical in the tables. In the text,
the rate of chemical used is in parentheses following the name or number of the
herbicide. Preplant incorporated herbicides were thoroughly mixed with the top
2-4 inches of soil immediately after spraying and prior to planting with a
tractor powered rotary hoe. Pre-emergence treatments were applied on a smooth
surface as soon after planting as practical. Four 4-row plots of each treatment
were included in randomized blocks. In the experiments with corn, cotton,
grain sorghum and peanuts two of each 4-rows were sprayed and two were left
unsprayed to serve as checks. It was decided that too much border effect was
present and all of the 4 rows were sprayed in the remaining tests which was
with soybeans and vegetables. This would allow the two center rows which would
be free of borders to be used for observations. The corn, cotton, grain sorghum
and soybeans tests were located in the same area on Tifton fine sandy loam soil
which had a uniform infestation of: crab grass, water grass, goose grass, Florida
pusley, cocklebur, sickle pod, red weed and morning glory. Sandbur, Egyptian
grass, pigweed, night shade and bristly starbur occurred as irregular infestations.
The soil type for the peanut test was Norfolk fine sandy loam which had a uniform
infestation of crab grass, water grass, Florida pusley and morning glory. Goose
grass, sandbur, cocklebur, sickle pod, red weed and ragweed were present in ir-
regular stands. A Ruston fine sandy loam type of soil was used for the vegetable
test. Weeds present in uniform stands were: crab grass, Florida pusley, red weed,
and pigweed. Sickle pod and morning glory occurred irregularly.


X/Associate Professor (Associate Agronomist), Agricultural Research Center,
Jay, Florida.







CORN

A uniform application of 300 pounds of 8-24-24 plus 300 pounds of
ammonium nitrate was applied broadcast and disced into well prepared Tifton
fine sandy loam soil before planting. Preplant incorporated herbicides were
applied before planting. Funks 5858 variety of corn was planted in 36 inch
rows with a spacing of 16 inches in the drill. Moisture was plentiful and a
good stand was obtained. All other herbicides were applied pre-emergence the
day after planting. Twenty-two treatments and a check were included in the test.
The plots were harvested for yield after maturity. None of the plots were
cultivated.

Most herbicides gave good to excellent control initially. However,
some of the chemicals failed to give persistent control and weeds and grass
came in later in the season. As shown in Table 1 Atrazine (3), Non 097 (2) (3),
Atrazine + Lorox (1.6 + 1/2), Bladex + Atrazine (1 + 1-1/2), Bladex + Sutan
(1 + 3), and Sencor (1) gave good control late in the growing season or until
maturity. MC 4379 (1-1/2) (3) caused toxicity in the early stages of growth.
However, the corn recovered and made normal growth to maturity with yields in
excess of 80 bushels. Corn yields (Table 1A) following the use of herbicides
were good to excellent for all treatments, ranging from a low of 78 to a high of
94 bushels. Yields from all treatments were approximately double that of the
uncultivated check at 43 bushels. Respective yields from Atrazine + Mon 097
(0.8 + 1), Lasso (1-1/2), Atrazine (3), Bladex + Atrazine (1 + 1-1/2), Mon 097
(2), Bladex + Sutan (1 + 3) and Bladex (2) were 94.9, 91.3, 90.9, 89.4, 88.9,
88.0 and 86.2 bushels.
COTTON

A broadcast fertilizer treatment of 300 pounds of 8-24-24 and 200
pounds of ammonium nitrate was mixed with well prepared Tifton fine sandy loam
soil by discing. Treatments requiring incorporation were applied in a broadcast
spray and immediately mixed with the top 2-4 inches of soil with a power driven
rotary hoe before planting. Carolina Queen cotton was planted at the recommended
rate in rows 36 inches wide. A drag attached to the planter smoothed the rows
for the application of pre-emergence treatments applied the following day. The
plots were not cultivated and no yields were taken.

The data in Table 2 show good to excellent control of grassy weeds
during the growing season for all treatments. After the initial stages of growth,
none of the treatments controlled the heavy infestation of broadleafed weeds.
Treatments giving most persistent control of these broadleafed weeds were: Lasso
+ dinoseb (1-1/2 + 3), Lasso (3) and Cotoran (4). Rates of San 6706 (3/4) (1-1/2)
and San 9789 (1/4) (3/4) were too low and will be increased for the coming year.
The use of 1 pound of Treflan resulted in a small amount of stand damage.

Post-emergence: An experiment using phytotoxic oils to control weeds in
cotton was conducted. Mobilnix, was used at the rate of 5 and 7 gals. per acre
and Mobilnex T was used at the rate of 3 gallons per acre. An oil water emulsion
was made using enough water to make a total of 12 gallons of emulsion. The first
application was made when the cotton was 3 to 4 inches high. The emulsion was
sprayed in a 10 inch band with spray directed at the base of the cotton plant.
The sprayer was attached to a cultivator and the row middles were kept clean by
cultivation while the row was being sprayed.

Good control of grasses and broadleafed weeds was obtained
with very little damage to -the cotton. Results indicate that older
we dsAwould be more difficult to control. However, if the







weeds were sprayed before they were taller than the cotton and the whole plant
could be sprayed they were easily killed. Weeds sprayed with Mobilnex were dead
in a day or so. Those sprayed with Mobilnix T were killed much sooner. It would
appear that the use of aromatic oils such as these in connection with cultivation
would enable one to produce weed free cotton.

GRAIN SORGHUM

The fertilizer treatment for grain sorghum was a broadcast application
of 300 pounds of 8-24-24 plus 200 pounds of ammonium nitrate which was disced in-
to well prepared Tifton fine sandy loam soil before planting. A grain type of
sorghum, BR-64, was planted in 36 inch rows at the rate of 10 pounds per acre.
All treatments in this test were applied as pre-emergence sprays immediately
after planting except treatment number 7. This treatment, using dinoseb (3),
was applied at emergence when the sorghum was in the needle stage before the
leaves began to unfurl. A total of 22 treatments including 16 single herbicides,
4 combinations of herbicides and 2 checks, one of which was cultivated, was
included. No other cultivation was used. Yields were taken from the first crop
and the stubble was mowed. A second, or ratoon crop, was close to maturity but
was partially killed by an early frost.

Lasso (3) and Bladex (2), Table 3, gave almost perfect grass control
in the early stages of growth. Treatments giving most persistent control of
broadleafed weeds were: Lasso + dinoseb (1-1/2 + 3), Lasso (3) and Bladex +
Lasso (1 + 1). Dinoseb (3), applied in the needle stage, was not as good as in
previous years. Propazine (2), Atrazine (2), Propazine + Lorox (1 + 1) and
Lorox (2) furnished fairly persistent control of both types of weeds.

Yields from treatments ranged from a low of 3130 pounds (Table 3A) for
the uncultivated check to a high of 5040 pounds for Lorox (2). Treatments producing
highest yields were: Lorox (2), Lasso + dinoseb (1-1/2 + 3), Bladex + Lasso
(1 + 1), Propazine + Lorox (1 + 1), dinoseb (4-1/2), Atrazine (2) and Bladex (2).
Their yields in pounds in the order mentioned were: 5040, 4990, 4900, 4630, 4540,
4490 and 4490. The yield of the cultivated check was 4400 pounds. In general,
treatment yields were from 700 to 2000 pounds greater than the uncultivated check.

PEANUTS

The soil type for this test was Norfolk fine sandy loam. After the
soil had been prepared a broadcast application of 500 pounds of 0-16-8 was incor-
porated with a disc harrow. Preplant incorporation treatments were applied and
thoroughly mixed with the top 2-4 inches of soil before planting. Early Runner
peanuts were planted at the rate of 65 pounds per acre in 36 inch rows. A good
stand was obtained. Pre-emergence treatments were applied as soon as possible
after planting. Twenty-eight treatments including 24 single herbicides and 4
combinations of herbicides were used. An uncultivated check was also included.
No yields were taken.

The data in Table 4 show more persistent control of both grasses and
broadleafed weeds by the following treatments: Balan (3/4), Balan (1-1/2), Balan
+ dinoseb (3/4 + 3), Planavin (1-1/2), Planavin + dinoseb (3/4 + 3), Amchem A-820
(3) and Mon 097 (4). Other treatments slightly less effective were: Planavin
(3/4), Amchem A-820 (1-1/2), Kerb (3), RP 17623 (2), Mon 097 (2), Tunic (2) and
dinoseb (9). Toxicity was observed where the following treatments were used:
Planavin (1-1/2), RP 17623 (1) (2), Tunic (2), Maloran (3) and Mon 097 (4).







PEANUTS "CRACKING TIME" OR "EMERGENCE"


This test was planted on the same date as the regular peanut herbicide
test. Balan, which was used in 2 treatments, was replant incorporated before
planting. The remaining treatments were applied as the peanuts were "cracking"
the surface or were emerging therefrom. Dinoseb was used in single treatments of
4-1/2 and 6 pounds and in combination with other herbicides shown in Table 5.

The foliage of the emerging plants were burned by all of the herbicides
used in these treatments. However, no permanent damage was done and the plants
recovered in a short time. The weeds were burned and most of them were completely
killed by these treatments. In general, as shown in Table 5, the efficiency of
of all treatments was good to excellent. The treatments giving most persistent
control of both types of weeds were: Balan + Dyanap (3/4 + (1-1/2 + 3)) and
dinoseb (1-1/2) in combination with Falone(2), Lasso (1-1/2) (3), Mon 097
(1-1/2) (3) and MC 4379 (1) (2). Severe toxicity was shown by the following
treatments: dinoseb (1-1/2) in combination with Tok (3), MC 4379 (1) (2) and
Tunic (2). Slight toxicity was observed with RP 17623 (1) and Tok (2) in com-
bination with 1-1/2 pounds of dinoseb.

SOYBEANS

Five hundred pounds of 0-16-8 was applied and disced in before planting
Hampton soybeans on Tifton fine sandy loam soil. Sixty pounds of seed per acre
were planted in 36 inch rows. Ten preplant incorporated treatments were applied
broadcast and thoroughly mixed with the top 2-4 inches of soil prior to planting.
A power driven rotary hoe was used to incorporate these materials immediately
after they were applied. A drag was attached to the planter to smooth the rows
for the application of pre-emergence herbicides. The treatments using pre-
emergence herbicides included 26 single treatments and 13 combination treatments.
One uncultivated check was included. No yields were taken.

No treatment gave complete control of cocklebur and sickle pod. How-
ever, DPX 1840, a growth regulant, sprayed over the top of adjacent soybeans in-
fested with sickle pod and cocklebur, stopped growth and seed production by the
weeds with very little damage to the beans. This chemical will be tested more
extensively in the 1972 season. The best control of broadleafed weeds was given
by Sencor (1) (2) and Mon 097 + Sencor (1 + 1/2), Table 6. Other treatments giv-
ing reasonably good control of both types of weeds were: Lasso (3), Lasso +
dinoseb (1 + 3), Lasso + Sencor (1-1/2 + 1/2), Mon 097 (2) (3), BayKue (3) and
Bladex (4). Good grass control was obtained by a majority of the treatments used
in this test. Twenty-nine of the 49 treatments were giving 90 percent or better
control of grasses at the end of the growing season. Some stand damage and
toxicity was observed with Sencor (2), BayKue (1-1/2) and MC 4379 (2). These
toxicity symptoms disappeared and normal growth was resumed. Severe stand damage
occurred where BayKue (3) and Bladex (2) (4) were used.

VEGETABLES

Crops used in this test were: snap beans, lima beans, southern peas,
cantaloupes, cucumbers and watermelons. The test was located on Ruston fine sandy
loam soil. Three hundred pounds of 8-24-24 was disced into prepared soil before
planting. Four 4-row plots of each of 18 treatments were included. In each plot
there was a row each of snap beans, lima beans and southern peas. The fourth row
was planted with a mixture of cantaloupe, cucumber and watermelon. Four readings
were made on the dates shown in Table 7. A reading for tolerance was made on May
22 and data are shown in Table 8.







The data in Table 7 indicate that rates of Amchem 65-81B (2), Lasso
(1-1/2) and Preforan (3) failed to give the control needed here. The most per-
sistent control was obtained from Planavin (1-1/2), Treflan (1), Amchem A-820
(3), Lasso (3), Sinbar (1) and Dacthal (8). Relatively good control was obtained
from Planavin (3/4), Treflan (1/2), Lasso + dinoseb (1-1/2 + 3) and Lasso +
Lorox (1-1/2 + 3/4).

In regard to tolerance: Tolerance by all crops was fair to good to
Planavin (3/4) (1-1/2) and Diphenamid (4), Table 8. Tolerance by all crops to
Amchem 65-81B (2) (3), Lasso (1-1/2) and Dacthal (8) was good. Watermelon and
canteloup showed poor tolerance to Treflan (1/2) and Amchem A-820 (1-1/2); the
tolerance of the remaining crops was fair to good. The beans and peas were
fair to good on tolerance to Treflan (1) and Amchem A-820 (3) but the tolerance
of the curcubits was poor. The tolerance to Lasso (3) and Lasso + dinoseb
(1-1/2 + 3) was fair to good from all crops except cucumbers which was poor.
Watermelon showed fair to good tolerance to Sinbar (1); the rest of the crops
had almost zero tolerance. All crops were intolerant to Lasso + Lorox (1-1/2 +
3/4) and Preforan (3) (4-1/2).







Table 1


Herbicidal Control of Grass and Weeds in Corn 1971

Agricultural Research Center
Jay, Florida


Herbicide Lbs./A.


Time of
Application


Atrazine
Atrazine
Atrazine
Atrazine
MIon 097
Lasso


Lorox
Lasso
Mon 097


Lasso
Bladex 2
Bladex + Atrazine
Bladex + Sutan
Sencor
Sencor
BayKue 2236
BayKue 2236
Tunic
Tunic
MC 4379
MC 4379
Mon 097
Maloran
Maloran
dinoseb + 24DA
Check


3
1.6 + 1/2
1 + 1-1/2
0.8 + 1
2
1-1/2
3
2
1 + 1-1/2
1+3
1/2
1
1
2
2

1-1/2
3
1-1/2
3
3 :.
1-1/2
3
3-1/2


Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


E
E
E
E
E
E
E
E
E
E Ppi
E
E
E
E
E
E
E
E
E
E
E
E


90
95
95
100
100
90
100
100
95
95
90
100
90
95
85
90
85
95
100
80
85
90


90
95
95
100
100
90
95
90
90
95
90
90
90
90
80
85
80
90
100
80
85
90


80
85
85
85
90
75
85
80
90
85
75
90
70
85
65
75
70
80
95
75
70
80


90
85
95
100
100
90
95
80
90
90
85
90
80
85
75
75
75
80
100
70
75
85


75
75
75
75
80
70
75
70
90
85
55
80
60
70
45
45
50
70
90
50
65
75


Weeds present: Goose grass, crabgrass, pusley, re
bur, sickle pod, morning glory and Texas sandbur.


G = Grass; BLW = Broadleaf weeds.
Pre-E = Pre-emergence; Ppi = Preplant incorporated.
Corn: Funks 5858 variety planted April 13.
Sutan treatment was incorporated April 13. All other herbicides were applied as
pre-emergence spray April 14.
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.
Soil type: Tifton fine sandy loam.


May 1
G BLW


May 17
G BLW


June 3
G BLW


June 24
G BLW


85
85
90
100
100
85
95
80
90
90
80
90
80
80
65
70
70
80
90
60
70
80
weed,


75
75
70
70
80
65
70
70
90
80
50
80
50
60
35
40
45
60
85
40
60
65
cockle-


d


c- '------------







Table 1A


Corn Yields Following Herbicide Treatments 1971

Agricultural Research Center
Jay, Florida


Herbicide

Atrazine
Atrazine + Lorox
Atrazine + Lasso
Atrazine + lion 097
Mon 097
Lasso


Lasso
Bladex
Bladex
Bladex


+ Atrazine
+ Sutan


Sencor
Sencor
Baykue 2236.
Baykue 2236
Tunic
Tunic
MC 4379
MC 4379
Mon 097
Maloran
Maloran
dinoseb + 24D
Check


Lbs./A.

3
1.6 + 1/2
1 + 1-1/2
0.8 + 1
2
1-1/2
3
2
1 + 1-1/2
1+3
1/2
1
1
2
2
3
1-1/2
3
3
1-1/2
3
3 + 1/2


Time of
Application


Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


E
E
E
E
E
E
E
E
E
E + Ppi
E
E
E
E
E
E
E
E
E
E
E
E


Yield in Bushels Per Acre


R-l R-2


90.2
70.0
72.6
97.0
100.6
89.7
105.8
92.8
101.6
107.3
105.3
77.8
100.0
80.4
74.2
78.8
72.6
71.0
83.0
83.0
80.4
85.6
37.6


115.6
80.4
83.0
101.1
87.1
105.8
79.3
61.7
87.1
72.1
90.2
85.6
73.6
93.9
85.6
76.2
88.2
73.1
87.6
95.9
75.7
87.6
44.2


R-3 R-4


69.0
90.7
94.4
87.6
63.8
85.0
65.9
87.6
87.6
88.2
84.5
99.1
85.0
85.0
73.1
74.7
86.6
84.5
89.7
85.5
86.6
78.8
49.8


88.7
87.6
97.0
93.9
104.2
84.5
81.4
102.7
81.4
84.5
69.0
83.0
85.0
92.8
87.6
94.9
84.0
100.6
78.8
71.6
71.6
88.2
37.6


Avg. Rank


90.9
82.2
86.8
94.9
88.9
91.3
83.1
86.2
89.4
88.0
87.3
86.4
85.9
88.0
80.1
81.2
82.9
82.3
84.8
84.0
18.6
85.1
42.3


Pre E = Pre-emergence; Ppi = Preplant incorporated.
Corn: Funks 5858 variety planted April 13.
Sutan treatment was incorporated April 13. All other herbicides were applied as
pre-emergence spray April 14.
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 sea-
son.
Soil type: Tifton fine sandy loam.







Table 2


Herbicidal Control of Grass and Weeds in Cotton 1971

Agricultural Research Center
Jay, Florida


Herbicide

Treflan
Treflan
Planavin
Planavin
Planavin + Karmex
ER 5641
ER 5641
Amchem A-820
Amchem A-820
San 6706
San 6706
San 9789
San 9789
Tunic
Tunic
Lasso
Lasso
Lasso + dinoseb
Cotoran
Cotoran
Caparol
Check


Lbs./A.


1/2
1
3/4
1-1/2
3/4 +
1
1-1/2
1-1/2
3
3/4
1-1/2
1/4
3/4
2
3
1-1/2
3
1-1/2
2
4
3
Weeds


Time of
Application


Ppi
Ppi
Ppi
Ppi
1 Ppi Pre E
Ppi
Ppi
Ppi
Ppi
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
+ 3 Pre E
Pre E
Pre E
Pre E
present: Goose
bur,


May 1
G BLW


95
100
95
100
100
100
100
100
100
90
95
80
90
85
90
95
100
100
90
100
90


80
85
90
95
95
85
90
80
90
75
80
75
80
75
85
90
90
100
80
90
90


May 17
G BLW


90
100
95
100
100
95
100
95
100
85
90
75
85
80
90
95
100
95
90
95
90


June 3
G BLW


100
100
100
100
100
100
100
100
100
80
90
75
80
80
85
85
95
95
85
90
80


June 24
G BLW


80
90
90
100
95
80
90
95
90
75
85
75
80
70
75
75
90
90
75
85
80


grass, crabgrass, pusley, red weed, cockle-
sickle pod, morning glory and Texas sandbur.


G = Grass; BLW = Broadleaf weeds.
Pre E = Pre-emergence; Ppi = Preplant incorporated.
Cotton: Carolina Queen planted April 13. Stand good.
Incorporated chemicals applied April 13; Incorporated 2-3 inches deep with power
driven rotary hoe.
Pre-emergence chemicals applied April 14.
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.
Soil type: Tifton fine sandy loam.







Table 3


Herbicidal Control of Grass and Weeds in Grain Sorghum 1971

Agricultural Research Center
Jay, Florida


Herbicide Lbs./A.

Propazine 2
Atrazine 2
Igran 2
Propazine + Lorox 1 + 1
dinoseb 3
dinoseb 4-1/2
dinoseb (needle stage) 3
Lasso + dinoseb 1-1/2 + 3
Lasso 1-1/2
Lasso 3
Bladex 2
Bladex + Lasso 1 + 1
Bladex + Atrazine 1 + 1
Lorox 2
Cotoran 2


Cotoran
Maloran
Maloran
Tunic
Tunic
Check


+ Propazinel + 1
1-1/2
3
1-1/2
3


Time of
Application


Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


May 1 May 17
G BLW G BLW


85
90
85
85
90
95
85
95
95
100
100
95
95
90
85


June 3
G BLW


75
90
85
70
80
85
80
95
95
100
90
95
85
85
80
75
75
80
75
80


Weeds present: Goose grass, crabgrass, barnyard
sickle pod, cocklebur, red weed, morning glory.


June 24
G BLW


70 70 70
75 80 70
60 80 60
70 70 70
50 75 50
50 80 45
40 70 40
75 90 75
75 90 65
80 100 75
60 90 60
80 95 75
70 85 65
70 85 70
50 70 40
70 70 60
50 65 50
65 75 65
30 70 30
40 75 40
grass, pusley,


G = Grass; BLW = Broadleaf weeds.
Pre-E = Pre-emergence; Ppi = Preplant incorporated.
Variety: DeKalb BR-64 planted April 13 at the rate of 10 pounds per acre.
Herbicides: All herbicides were applied as pre-emergence spray April 14. 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.
Soil type: Tifton fine sandy loam.







Table 3A


Yields of Grain Sorghum Following Herbicidal Treatments 1971

Agricultural Research Center
Jay, Florida


Herbicide


Propazine
Atrazine
Igran
Propazine + Lorox
dinoseb
dinoseb
dinoseb (needle stage)
Lasso + dinoseb
Lasso
Lasso
Bladex
Bladex + Lasso
Bladex + Atrazine
Lorox
Cotoran + Propazine
Maloran
Maloran
Tunic
Tunic
Check
Cultivated Check


Lbs./A.

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


Time of
Application


Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


Pounds of Grain Sorghum Per Acre
R-1 R-2 R-3 R-4 Avg. Rank


3810
5810
3090
3810
4540
4540
4720
4540
3450
3810
4540
4720
4170
5080
4540
3090
3810
2900
3270
2360
4540


4350
4900
3450
4540
4720
4720
4170
5080
4170
3990
3990
5260
4900
5260
4170
4170
3630
4720
3630
3090
4720


3990
3630
4720
5080
2900
4350
4350
5810
5080
4350
4720
4900
3630
5260
4350
4720
3630
4350
5260
3630
4540


4900
3630
3990
5080
3810
4540
3990
4540
4720
4720
4720
4720
4350
4540
3810
3450
3990
3810
4900
3450
3810


4260
4490
3810
4630
3990
4540
4360
4990
4360
4220
4490
4900
4260
5040
4220
3990
4040
4130
4220
3130
4400


Pre E = Pre-emergence; Ppi = Preplant incorporated.
Variety: DeKalb BR-64 planted April 13 at the rate of


Herbicides: All herbicides were applied
herbicides are expressed in pounds
Weather: Moisture was plentiful at time
Soil type: Tifton fine sandy loam.


10 pounds per acre.


as pre-emergence spray April 14. Rates of
of actual material on a broadcast basis.
of planting and throughout the growing season.







Table 4


Herbicidal Control of Grass and Weeds in Peanuts 1971

Agricultural Research Center
Jay, Florida


Herbicide

Balan
Balan
Balan + dinoseb
Planavin
Planavin
Planavin + dinoseb
Amchem A-820
Amchem A-820
Kerb
Kerb
RP 17623
RP 17623
Dyanap
Lasso
Lasso
Lasso + dinoseb
Mon 097
Mon 097
Enide dinitro
Tunic
Tunic
Tok
Preforan
Preforan
Maloran
Maloran
dinoseb
dinoseb
Check


Lbs./A.


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


Time of
Application

Ppi
Ppi
Ppi + Pre E
Ppi
Ppi
Ppi + Pre E
Ppi
Ppi
Ppi
Ppi


1 Pre E
2 Pre E
1-1/2 + 3* Pre E
2 Pre E
4 Pre E
2 + 3 Pre E
2 Pre E
4 Pre E
3 + 2 Pre E
1 Pre E
2 Pre E
3 Pre E
3 Pre E
4-1/2 Pre E
2 Pre E
3 Pre E
6 Pre E
9 Pre E
Weeds found in noW
glory, and pigweed.


May 4
G BLW


100
100
100
95
100
95
95
100
85
95
90
100
90
90
100
95
95
100
95
85
90
80
90
95
80
90
85
95


May 21
G BLW


100
100
100
95
100
95
95
100
80
95
90
100
90
90
95
90
95
100
95
80
85
75
85
90
70
85
80
90


cultivated check:


June 8
G BLW


90 100 8
95 100 9
90 100 8
85 95 8
90 100 9
90 95 9
85 95 8
85 100 8
75 80 7
80 95 8
80 90 7
85 100 8
70 85 i
75 90 7
85 95 8
75 90
90 90 E
95 100
75 95 7
65 75
85 80 E
60 70
65 80
80 90
70 70 f
80 80 1
75 80
80 90 !
Crab grass,


June 29
G BLW


0 90 80
5 95 90
5 100 80
5 90 75
0 100 85
0 90 80
5 85 75
5 90 85
0 75 60
0 80 75
0 85 70
0 90 75
0 80 60
0 75 65
0 85 70
0 80 65
5 90 75
5 100 90
0 90 60
0 70 50
0 80 75
0 60 40
10 75 50
0 90 60
10 70 60
;0 80 70
'0 70 60
10 85 75
pusley, morning


Cocklebur, sickle pod, beggar weed, and rag-


weed were present but not uniformly distributed.


Pre-E = Pre-emergence; Ppi = Preplant incorporated.
G = Grass; BLW = Broadleaf weeds.
Peanuts: Early Runner planted April 20. Stand good.
Herbicides: Rate expressed in pounds of actual material on a broadcast basis. Incor-
porated materials applied April 20. All pre-emergence treatments applied April
20 and 21.
Plots: Four 4-row plots of each treatment.
Weather: There was a good supply of moisture at planting and throughout the season.
Soil type: Norfolk fine sandy loam.







Table 5


Herbicidal Control of Grass and Weeds in Peanuts Sprayed
at Emergence or "Cracking Time" 1971

Agricultural Research Center
Jay, Florida


Herbicide

Balan + dinoseb
Balan + Dyanap
dinoseb + Falone
Enide dinitro
dinoseb + Lasso
dinoseb + Lasso
dinoseb + Mor 097
dinoseb + Mon 097
dinoseb + Preforan
dinoseb + laloran
dinoseb + RP 17623
dinoseb + Tok
dinoseb + Tok
dinoseb + MC 4379
dinoseb + MC 4379
dinoseb + Tunic
dinoseb + 24DA
dinoseb
dinoseb
Check


Lbs./A.

3/4 + 3,
3/4 + (1-1/2+3)
1-1/2 + 2
2 + 1-1/2


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


1-1/2
1-1/2
3
3
1-1/2
1

3
1
2
2


Time of
Application


Ppi -
Ppi -
Emer
Emer
Emei
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer
Emer


Emer
Emer


May 26
G BLW


100
100
100
95
100
100
100
100
95
95
95
90
95
100
100
90
100
95
100


100
100
95
90
95
100
100
100
95
95
90
80
90
95
100
95
95
90
95


June 15
G BLW


100
100


100
100
100
100
95
90
95
85
90
95
100
90
90
90
100


95
100
95
90
95
95
95
95
90
90
90
80
85
90
95
95
90
90
95


July 6 July 27
G BLW G BLW


100
100
ioo
95
95
100
100
100
100
95
90
95
85
90
90
100
90
90
85
95


9?
100
95
85
95
95
95
95
90
90
90
80
85
90
95
95
90
90
95


90
95
90
90
95
100
ioo
100
85
90
90
75
80
90
100
85
85
80
90


Weeds in check: Crab grass, Florida pusley, morning glory, and
pigweed. Sandbur, cocklebur, sickle pod, beggar weed, and rag-
weed were present but not in uniform stands.


G = Grass; BLW = Broadleaf weeds.
Emer = Emergence; Ppi = Preplant incorporated.
Peanuts: Early Runner planted April 22. 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 7, 1971, except
Balan which was replant incorporated April 21.
Plots: Four 4-row plots of each treatment.
Weather: Moisture was plentiful at planting and throughout the growing season.
Soil type: Norfolk fine sandy loam.







Table 6
Herbicidal Control of Grass and Weeds in Soybeans Planted in Rows 1971
Agricultural Research Center
Jay, Florida
Time of June 30 July 18 August 7 Sept. 5
Herbicide Lbs./A. Application G BLW G BLW G BLW G BLW
Tretlan 1/2 Ppi 90 80 90 65 90 40 90 35
Treflan 1 Ppi 100 90 100 75 100 60 100 50
Treflan + dinoseb 1 + 3 Ppi Pre E 100 90 100 75 100 60 100 60
Planavin 3/4 Ppi 95 90 95 70 95 50 95 50
Planavin + dinoseb 3/4 + 3 Ppi Pre E 95 85 95 65 90 60 90 60
Planavin + Lorox 3/4 + 1 Ppi Pre E 95 90 95 75 90 65 90 65
Kerb 1-1/2 Ppi 85 65 75 50 75 40 70 30
Kerb 3 Ppi 90 70 85 6b 85 40 80 40
Amchem A-820 1-1/2 Ppi 90 75 90 60 90 40 75 30
Amchem A-820 3 Ppi 95 85 95 65 95 40 85 40
Lorox 1 Pre E 90 70 80 70 90 70 80 65
Lorox 2 Pre E 95 90 90 85 90 80 90 75
Preforan 3 Pre E 90 85 85 70 90 60 80 50
Preforan 4-1/2 Pre E 100 85 90 75 90 60 85 50
Maloran 2 Pre E 85 85 85 65 80 50 70 50
Maloran 3 Pre E 90 75 85 70 80 60 80 70
Lasso 2 Pre E 95 85 100 80 100 70 90 60
Lasso 3 Pre E 100 90 100 85 100 80 100 80
Lasso + dinoseb 1 + 3 Pre E 100 90 100 90 100 80 100 80
Lasso + Lorox 1-1/2 + 1 Pre E 100 100 100 90 100 75 95 70.
Lasso + Sencor 1-1/2 + 1/2 Pre E 100 100 100 90 100 90 100 85
Mon 097 2 Pre E 100 90 100 90 100 85 100 85
Mon 097 3 Pre E 100 95 100 95 100 85 100 85
Mon 097 + Sencor 1 + 1/2 Pre E 100 95 100 90 100 90 100 90
Sencor 1/2 Pre E 100 90 95 85 95 80 95 60
Sencor 1 Pre E 100 95 100 90 100 90 100 90
Sencor 2 Pre E 100 100 100 100 100 100 100 90
Baykue 1-1/2 Pre E 95 90 90 85 90 80 85 75
Baykue 3 Pre E 100 95 100 90 90 90 90 85
Amiben 3 Pre E 90 85 90 85 90 75 90 65
MC 4379 1 Pre E 90 75 85 60 85 50 85 50
MC 4379 2 Pre E 100 90 95 80 90 75 90 75
Tok 1-1/2 Pre E 75 60 70 50 70 40 70 40
Tok 2-1/2 Pre E 80 65 80 60 75 45 75 45
Tok + dinoseb 2 + 1 Pre E 85 70 80 60 80 40 80 50
ER 5461 1 Pre E 85 65 75 60 80 40 80 50
ER 5461 1-1/2 Pre E 85 70 80 65 80 40 80 40
EL 119 1-1/2 Pre E 95 85 95 75 95 65 90 45
EL 119 3 Pre E 95 85 95 80 95 75 90 60
EL 119 + Lorox 1 + 1 Pre E 100 90 95 75 95 60 90 50
EL 119 + dinoseb 1+ 3 Pre E 90 85 95 75 90 65 85 55
Bladex 1 Pre E 90 80 90 70 85 60 85 60
Bladex 2 Pre E 100 90 95 80 95 65 85 55
Bladex 4 Pre E 100 100 100 90 100 80 90 80
RP 17623 1 Pre E 95 90 95 85 95 70 90 60
Shamrox 6 + 3/4 Pre E 95 90 90 80 90 75 90 50
DS 5328 1 Pre E 100 90 95 80 90 75 90 60
DS 5328 2 Pre E 90 85 95 80 90 70 90 60
dinoseb 6 Pre E 95 90 95 85 90 75 9Q ,75
Check Weeds present: Goosegrass, crabgrass, pusley, red weed, cocebur,
__ _sickle pod. morning glory,and Texas sandbur.
G = Grass; BLW = Broadleaf weeds; Pre E = Pre-emergence; Ppi = Preplant incorporated.
Herbicide: Expressed in pounds of actual material on broadcast basis. Incorporated
material applied June 13. Pre-emergence material aDplied June 14 and 15.
Beans: Hampton planted June 14 in rows. Plots: Fo--r 4-row plots of each treatment.







Table 7


Herbicidal Control of Grass and Weeds in Certain Vegetable Crops 1971

Agricultural Research Center
Jay, Florida


Herbicide Lbs./A.


Time of
Application


Planavin
Planavin
Treflan
Treflan
Amchem A-820
Amchem A-820
Amchem 65-81B
Amchem 65-81B
Lasso
Lasso
Lasso + dinoseb
Lasso + Lorox
Sinbar
Diphenamid
Preforan
Preforan
Dacthal
Check


3/4
1-1/2
1/2
1
1-1/2
3
2
3
1-1/2
3
1-1/2 + 3
1-1/2 + 3/4
1
4
3
4-1/2
8
Weeds presei
pusley, red
night shade


Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


95
100
95
100
95
95
85
90
85
100
95
95
100
90
90
95
100


E
E
E
E
E
E
E
E
E
E
E


95
95
95
100
90
95
85
90
85
95
90
90
100
85
90
90
100


95
95
95
100
90
95
65
85
75
95
85
90
100
90
85
85
100


95
95
95
95
90
95
75
85
80
95
90
85
100
75
90
90
100


90
95
95
100
85
95
70
85
75
95
85
90
100
80
75
90
95


85
90
90
90
80
90
70
75
70
90
90
80
100
70
75
85
90


90
95
90
90
80
90
70
80
75
95
85
90
100
80
75
85
95


75
90
80
90
75
90
60
65
70
90
80
80
100
65
65
75
90


nt in uniform stands: Crab grass, water grass, Florida
weed, pig weed. Cocklebur, sickle pod, morning glory,
occurred in irregular stands.


G = Grass; BLW = Broadleaf weeds.
Pre E Pre-emergence; Ppi = Preplant incorporated.
Herbicides: Rates expressed in pounds of actual material per acre on a broadcast
basis. Incorporated materials applied April 29. Crops were planted May 3.
Pre-emergence materials applied May 4.
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.
Soil type: Ruston fine sandy loam.


May 22
G BLW


June 12
G BLW


June 28
G BLW


July 11
G BLW







Table 8


Tolerance of Certain Vegetable Crops tb Various Herbicides 1971

Agricultural Research Center
Jayj Florida


Herbicide

Planavin
Planavin
Treflan
Treflan
Amchem A-820
Amchem A-820
Amchem 65-81B
Amchem 65-81B
Lasso
Lasso
Lasso + dinoseb
Lasso + Lorox
Sinbar
Diphenamid
Preforan
Preforan
Dacthal


Lbs./A.

3/4
1-1/2
1/2
1
1-1/2
3
2
3
1-1/2
3
1-1/2 + 3
1-1/2 + 3/4
1
4
3
4=1/2
8


Pre E = Pre-emergence;


Ppi = Preplant incorporated.


Herbicides: Rates expressed in pounds of actual material per acre on a broadcast
basis. Incorporated materials applied April 29. Crops were planted May 3.
Pre-emergence materials applied May 4.
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.
Soil type: Ruston fine sandy loam.


Tolerance


Southern
Peas


Cucum-
bers


Time of
Appli-
cation


Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre
Pre


-
Snap
Beans


Fair
Fair
Fair
Fair
Fair
Fair
Good
Good
Good
Fair
Fair
Poor
Poor
Fair
Poor
Poor
Good


Lima
Beans

Good
Good
Good
Good
Fair
Good
Good
Good
Good
Fair
Good
Poor
Poor
Good
Poor
Poor
Good


Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Poor
Poor
Good
Poor
Poor
Good


Canta-
loupes


Fair
Fair
Poor
Poor
Poor
Poor
Good
Good
Good
Good
Fair
Poor
Poor
Good
Poor
Poor
Good


Fair
Fair
Fair
Poor
Fair
Poor
Good
Good
Good
Poor
Poor
Poor
Poor
Good
Poor
Poor
Good


Water-
melons

Fair
Fair
Poor
Poor
Poor
Poor
Good
Good
Good
Fair
Good
Poor
Fair to
Goo
Good
Poor
Poor
Good