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Herbicidal weed control in...
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Permanent Link: http://ufdc.ufl.edu/UF00053599/00013
 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: 1973
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: UF00053599:00013

Full Text



AGRICULTURAL RESEARCH CENTER
6 Jay, Florida
/ WFES RR ARCJ 74-2 February, 1974

HERBICIDAL CONTROL OF WEEDS IN CORN, COTTON, GRAIN SORGHUM,
PEANUTS, AND SOYBEANS 1973

R. L. Smith!/

The principal row crops grown in this area listed in order of acreage are
corn, soybeans, peanuts, cotton, and grain sorghum. Herbicide tests were conducted
with each of these crops in 1973. The current high prices for farm commodities
coupled with scarce and high priced labor continues to increase the necessity for
chemical weed control. Rainfall during the growing season for 1972 and 1973 has
been relatively high and weeds have flourished along with good growth by crops. A
number of herbicides give good control of grassy weeds and fair to good control
of many broadleafed weeds. Several of the hard to control broadleafed weeds are:
sickle pod, cocklebur, beggar weed, and morning glory. Nutsedge and Johnson grass
are not widespread as in some areas and do not present a serious problem. Data
from these experiments are used in making recommendations for use in this area.

A large number of herbicides are included in these tests each year.
Herbicides or experimental herbicides which are found not suitable for this area
are discontinued and new experimental herbicides are added to replace them. In
the same manner older herbicides are replaced by ones that are new and more
efficient. Herbicides are tested in most experiment stations and by the producing
company. After several years of promising results the herbicide is named and a
label is obtained. This label lists the crops on which this chemical can be used
and the rates and methods of application. These recommendations should be followed
closely for good results. Too much herbicide can cause serious crop damage and
too little will give poor weed control.

The herbicides used in these tests were applied with a CO2 sprayer which
furnished 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 with a tractor powered rotary hoe immediately after spraying and prior to
planting. 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 ran-
domized blocks. All 4 rows were sprayed. Unsprayed check plots were included in
each test. The corn, cotton, grain sorghum, and soybean tests were located in the
same area on Greenville fine sandy loam soil which had a uniform infestation of:
crabgrass, water gass, goose grass, Florida pusley, cocklebur, sickle pod, red
weed, and morningrg Sandbur, Egyptian grass, pigweed, night shade, and
bristly starbur cc irregularr infestations. The soil type for the peanut
test was Red Baj fine s Pja which had a uniform infestation of crabgrass,
water grass, Ftorida pusley ndmorning glory. Goosegrass, cocklebur, sickle
pod, red weed$ begga.~yeed, a were present in irregular stands.

1/Associate'i fessor (Asso ate Agronist), Agricultural Research Center, Jay,
Florida 37256536 9/ /t







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 GreenVille fin'e'sandy
loam soil before planting. Preplant incorporated herbicides were applied before
planting. Funks 3369A 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.

The data in Table 1 indicate that control of grassy weeds was good to
excellent and was persistent by most herbicides. Good control of broadleafed
weeds was obtained for a period of 6 weeks by most herbicide treatments. Addition
of a crop protectant to Sutan, Eptam, and Vernam at 4 and 8 pounds prevented
toxicity to the corn and good weed control was obtained by these treatments.
Eptam (8) and Vernam (8) without the protectant caused stand damage and toxicity
with resultant low yield (Table 1A). Addition of Atrazine (1) and Bladex (1-1/2)
to Sutan (4) improved the control of both types of weeds and good yields of corn
were obtained. Weed control by Atrazine (3) and Bladex (2) (3) was comparable and
good. Lasso in combination with Atrazine, Bladex, and dinitro was better than
Lasso alone. Yields in Table 1A indicate that good yields of corn may be obtained.
without cultivation, provided good weed control is obtained.

POST EMERGENCE TREATMENTS. Lorox, Evik, and Bladex used alone at the rates
of 1/2, 1, and 2 were applied post-emergence when the corn was 18-24" high and
weeds were 3-6 inches high. Good control of both types of weeds was obtained.
Yields from Bladex and Evik treatments were higher than that from Lorox treat-
ments. Results from combinations of Lasso with Atrazine or Bladex were good and
good yields were obtained. These data are shown in Table 1B.


-2-







COTTON

A broadcast fertilizer treatment of 300 pounds of 8-24-24 and 200 pounds of
ammonium nitrate was mixed with well prepared Greenville 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 rates 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.

Treflan (1/2) (1), Planavin (3/4) (1-1/2), CGA 10832 (Tolbar) (3/4) (1-1/2),
Amex (1-1/2) (3), AC 92553 (3/4),and Basf 3924H (1/2) (1) were applied preplant
incorporated as shown in Table 2. All of these are dinitro aniline compounds and
gave good control of the grassy weeds but failed to give satisfactory control of
broadleafed weeds. The higher rates of these chemicals were slightly better than
the lower rates. This was also true of Lasso (2) (3). Lasso (3) was superior to
Lasso + dinitro (1-1/2 + 3).


-3-







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 into
well prepared Greenville fine sandy loam soil before planting. A grain type.sorghum
BR-64, was planted in 36 inch rows at the rate of 10 pounds per acre. All
treatments in this test was applied as pre-emergence sprays immediately after
planting except treatment number 6. This treatment, using dinitro (3), was
applied at emergence when the sorghum was in the needle stage before the leaves
began to unfurl. A total of 21 treatments,including 18 single herbicides, 2
combinations of herbicides, and one check, was included. No cultivation was
used. Yields were taken at maturity. A second, or ratoon crop, was killed by
frost before maturity.

As shown in Table 3, Atrazine (2), Igran (2), and Bladex (2) (3) furnished
good and fairly persistent control of both types of weeds. Atrazine gave the best
control of bristly starbur, a hard to kill broadleafed weed. Stand damage from
Bladex (2) (3) was appreciable. This has not occurred in previous years. Weed
control from combinations of Bladex (1) with Atrazine (1), Lorox (1), and dinitro
(3) was good and persistent. No stand damage occurred with Bladex (1) in these
combinations. MC4379 (Modown) (1-1/2) (3) was toxic to the sorghum in the early
stage of growth. However, the plants recovered and made normal growth. Addition
of Lorox (1) to Rotate (1) (2) improved the weed control as compared to Rotate
alone. No yields were taken.


-4-







PEANUTS

The soil type for this test was .ed Bay fine sandy loam. After the soil had
been prepared a broadcast application of 500 pounds of 0-16-8 was incorporated
with a disc harrow. Preplant incorporation treatments were applied and thoroughly
mixed with the top 2-4 inches of soil before planting. Florunner 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 plant-
ing. Twenty-eight treatments including 24 single herbicides and 4 combinations of
herbicides were used. An uncultivated check was also included. No yields were
taken.

Fourteen treatments involving the use of six dinitro aniline compounds were
included and 2 rates of each herbicide were used (Table 4). Initial control of
grasses was good by each compound. None of these compounds gave lasting control
of broadleafed weeds. In most instances, the higher rates were better than the
lower rates. Addition of dinitro (3) pre-emergence to Balan (3/4) and Planavin (3)
did not improve their efficiency. Full season control was not obtained from any
of the treatments. Weed control from Lasso (2) (3) was equal to that of the
dinitro aniline compounds. Herbicides Gulf S6044 (3) (4) (5) and Destun (2) (3)
(4) were fairly good with grasses but rather weak with broadleafed weeds.


-5-








PEANUTS "CRACKING TIME" OR "EMERGENCE"


This test was planted on the same date as the regular peanut herbicide test.
Balan, which was used in 5 treatments, was preplant incorporated before planting.
The remaining treatments were applied as the peanuts were "cracking" the surface
or were emerging therefrom. Dinitro was used in single treatments of 4-1/2 and 6
pounds and in combination with other herbicides shown in Table 5. No yields were
taken.

With higher than average rainfall, treatments applied at emergence were not
as persistent as in previous years. As shown in Table 5 readings were made June 6,
June 26, July 26, and August 17. In general, weed control at these dates in the
order mentioned could be classed as excellent, good, fair, and poor. No treatment
gave good full season control Ronstar (1) (2) in combination with dinitro was
rather toxic.


-6-







SOYBEANS

Five hundred pounds of 0-16-8 were applied and disced in before planting
Hampton soybeans on Greenville 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-emer-
gence herbicides included 26 single treatments and 13 combination treatments. One
uncultivated check was included. No yields were taken due to weather conditions.

Twenty-two treatments using dinitro aniline compounds alone or in combinations
with other herbicides were included. Control of grassy weeds by these herbicides
was good to excellent but their control of broadleafed weeds was no better than
fair. The addition of Lorox (1) and dinitro (3) to Planavin (3/4) and of Sencor to
Treflan and Surflan improved their control of broadleafed weeds. Combinations of
Lasso (1-1/2) with Sencor (1/4) (3/8) (1/2), Dyanap (2 quarts),and Lorox (1)
were slightly better than Lasso (2) (3) alone. Dinitro (6) gave full season
control of both types of weeds. Next best control of both types of weeds was
Lorox (2) (1) and Sencor (3/4) (1/2). Sencor (1/2) (3/4) was not as persistent
as in previous years and may have been leached away by frequent rains.


-7-







Table 1


HERBICIDAL CONTROL OF GRASS AND WEEDS IN CORN 1973


Agricultural Research Center


Herbic:
Sutan -
Sutan
Sutan
Sutan
Sutan
Sutan +
Sutan
Sutan
Sutan +
Eptam 2
Eptam 2


Eptam
Eptam
Eptam 2
Eptam 2
Vernam
Vernam
Vernam
Vernam
Vernam
Vernam
Atrazin
Bladex
Bladex
Lasso 4
Lasso 4
Lasso 4
Lasso 4
Lasso
Lasso
Rotate
Rotate
Rotate
Rotate
Rotate
Rotate
Rotate
Ramrod
MC 4379
MC4379
Check


Cocklebur, Sickle Pod,


Jay, Florida
Method of May 9
ide Lbs/A Application G BLW
+ Atrazine 3 + 1 Ppi 95 95
25788 4 Ppi 95 90
25788 8 Ppi 100 95
4 Ppi 95 90
8 Ppi 100 95
- Bladex 3 + 1-1/2 Ppi 95 90
29148 6:025E 4 Ppi 95 95
29148 6:025E 8 Ppi 95 95
Atrazine 3 + 1 Ppi 95 90
25788 6:05E 4 Ppi 95 95
25788 6:05E 8 Ppi 100 95
4 Ppi 95 95
8 Ppi 100 95
'9148 6:025L 4 Ppi 95 90
'9148 6:025L 8 Ppi 100 95
25788 6:005E 4 Ppi 100 95
25788 6:005E 8 Ppi 100 95
4 Ppi 100 95
8 Ppi 100 95
29148 6:025L 4 Ppi 100 95
29148 6:025L 8 Ppi 100 95
e 3 Pre E 95 95
2 Pre E 95 95
3 Pre E 95 95
SBladex 1-1/2 + 1-1/2 Pre E 95 95
Bladex 2 + 2 Pre E 95 95
SAtrazine 1-1/2 + 1-1/2 Pre E 100 100
dinitro 3 + 3 Pre E 100 90
2 Pre E 95 90
3 Pre E 95 90
1 Pre E 80 75
1-1/2 Pre E 85 80
2 Pre E 85 80
+ Ramrod 1.2 + 2.9 Pre E 90 85
+ Ramrod 7.4 + 3.4 Pre E 90 90
+ Lasso 1-1/2 + 1-1/2 Pre E 95 90
+ Lasso 3 + 3 Pre E 100 95
3 Pre E 85 75
1-1/2 Pre E 95 90
3 Pre E 95 95
Weeds present: Goosegrass, Watergrass,


May 31
G BLW
95 90
95 85
100 90
95 85
100 90
100 90
95 85
100 90
95 90
95 85
100 95
95 85
100 90
95 85
100 95
100 95
100 95
95 90
100 95
100 95
100 95
95 95
95 90
95 95
95 90
100 95
100 95
95 90
95 85
100 90
70 60
80 70
75 70
80 80
85 85
95 90
95 95
75 65
90 85
95 90


June 20
G BLW
90 90
95 85
95 90
90 85
95 90
95 90
95 80
95 90
90 90
95 90
95 90
90 85
90 85
95 85
100 90
95 90
95 90
95 85
95 85
90 85
95 90
90 85
90 85
85 90
90 85
90 90
90 90
90 85
95 75
90 80
80 65
70 60
75 65
70 70
80 70
95 80
90 85
75 55
80 60
85 70


Crabgrass, Pusley, Redweed,
Morning Glory, Texas Sandbur.


G = Grass; BLW = Broadleaf Weeds.
Pre E = Pre-emergence; Ppi = Preplant incorporated.
Corn: Funks 3369A variety planted April 18. Excellent stand.
Preplant incorporated treatments applied April 17. All other herbicides applied as
pre-emergence sprays on April 18 and 19.
Rates of herbicides are expressed in pounds of actual material on a broadcast basis.
Weather: Moisture was plentiful at tine of planting and throughout growing season.
Soil type: Greenville fine sandy loam.
Plots: Four 4 row (3' X 24') of each treatment.
8 -


July 12
G BLW
90 60
95 60
95 75
90 40
95 65
95 75
95 65
95 75
90 70
95 55
95 75
95 65
95 65
95 60
95 75
95 70
95 80
90 50
95 50
90 70
95 80
80 85
80 65
85 70
85 70
85 70
90 60
95 65
90 55
90 65
70 25
65 25
65 30
60 40
75 45
95 60
90 60
80 35
80 40
85 50







Table 1A


CORN YIELDS FOLLOWING HERBICIDE TREATMENTS 1973


Agricultural Research Center
Jay, Florida
Method of


+ Atrazine 3-1L
25789 6-0.25E
25788 6-0.25E


+ Bladex 3-1-1/2L
29148 6:0.125E
29148 6:0.125E
+ Atrazine
25788 6-0.5E
25788 6-0.5E


Eptam
Eptam 29148 6-0.25E
Eptam 29148 6-0.25E
Vernam 25788 6-0.5E
Vernam 25788 6-0.5E
Vernam
Vernan
Vernam 29148 6:025E
Vernam 29148 6:025L
Atrazine
Bladex
Bladex
Lasso + Bladex
Lasso + Bladex
Lasso + Atrazine
Lasso + dinitro


Ramrod
Modown (MC 4379)
Modown (MC 4379)
Cultivated Check
Check


Herbicide


Sutan
Sutan
Sutan
Sutan
Sutan
Sutan
Sutan
Sutan
Sutan
Eptam
Eptam
Eptam


Lbs/A
3+1
4
8
4
8
3 + 1-1/2
4
8
3+i
4
8
4
8
4
8
4
8
4
8
4
8
3
2
3
1-1/2 + 1-1/2
2+2
1-1/2 + 1-1/2
3+3
2
3
1
1-1/2
2
1.2 + 2.9
1.4 + 3.4
1-1/2 + 1-1/2
3+3
3
1-1/2
3


in Bushels Pe
R-3R-4


er Acre


Pre E = Pre-emergence; Ppi = Preplant incorporated.
Corn: Funks 3369A variety planted April 18.
Sutan treatment was incorporated April 17. All other herbicides were applied as pre-
emergence spray April 18.
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: Greenville fine sandy loam.
Plots: Four 4-row plots of each treatment.


-9-


Application
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
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


R 1
93.3
96.8
72.6
72.6
62.2
82.1
69.1
58.8
70.0
64.0
79.5
75.2
70.0
81.2
53.6
83.8
72.6
101.1
69.1
66.6
96.8
94.2
83.8
92.5
85.6
61.4
85.6
77.8
79.5
56.2
42.4
48.4
50.1
68.3
75.2
75.2
118.4
43.2
59.6
51.9
63.1
53.6


Lasso
Lasso
Rotate
Rotate
Rotate
Rotate
Rotate
Rotate
Rotate


+ Ramrod
+ Ramrod
+ Lasso
+ Lasso


----- M W


Yield
R 2
62.2
103.7
86.4
95.1
85.6
79.5
97.7
110.6
6863
86.4
82.1
71.7
106.3
76.9
79.5
97.8
112.4
85.6
47.5
77.8
96.8
71.7
59.6
82.1
72.6
70.9
62.2
66.6
95.9
102.9
83.8
64.0
85.6
73.5
85.6
100.3
90.0
64.0
70.9
68.3
90.8
51.0


93.3
69.1
113.2
76.1
108.0
66.6
107.2
102.0
127.1
90.0
94.2
52.7
69.1
9519
106.3
107.2
113.2
90.0
55.3
65.7
100.3
98.5
94.2
79.5
101.1
85.6
90.0
73.5
90.0
90.0
57.9
55.3
70.0
64.0
78.7
86.4
75.2
48.4
83.0
77.8
57.0
23.3


121.0
90.8
62.2
71.7
120.1
95.9
107.2
70.9
73.5
59.6
86.4
60.5
7649
76.9
70.9
85.6
78.7
80.4
64.8
66.6
80.4
86.4
88.2
70.9
68.3
94.2
109.8
65.7
61.4
51.9
61.4
87.3
77.8
49.3
54.5
69.1
72.6
70.0
64.8
90.8
58.8
25.9


Ave.jan
92.5 6
90.1 7
83.6 15
78.9 24
94.0 3
81.0 22
95.3 1
85.6 12
84.7 14
75.0 28
85.6 13
65.0 36
80.6 23
827 17
77.6 26
93.6 4
94.2 2
89.3 8
59.2 40
69.2 34
93.6 5
87.7 10
81.5 20
81.3 21
81.9 18
78.0 25
86.9 11
70.9 31
81.7 19
75.3 27
61.4 39
63.8 37
70.9 32
63.8 38
73.5 29
82.8 16
89.1 9
56.4 41
69.6 33
72.2 30
67.4 35
38.5 42







Table 1B


CORN YIELDS FOLLOWING POST EMERGENCE TREATMENTS 1973


Herbicides Lbs/A
Lorox 1/2
Lorox 1
Lorox 2
Evik 1/2
Evik 1
Evik 2
Bladex 1/2
Bladex 1
Bladex 2
Lasso + Atrazine 1-1/2 + 1.2
Lasso + Bladex 1-1/2 + 1.2
Lasso + Bladex 2-1/2 + 2
Check
PE = Post Emergence.
Corn Variety: Funks 3369A plal


Agricultural
Jay,
Method


Application
PE
PE
PE
PE
PE
PE
PE
PE
PE
PE
PE
PE
PE


Research Center
Florida
of Yield i


R 1
61.4
87.3
69.1
85.6
100.3
56.2
106.3
72.6
98.5
102.9
95.1
91.6
57.0


n Bushels Per


R- 2
86.4
62.2
87.3
85.6
43.2
106.3
76.9
57.0
83.0
72.6
80.4
90.8
90.8


nted April 18. Stand excellent.


R 3
56.2
72.6
77.8
60.5
58.8
72.6
86.4
72.6
54.5
100.3
102.0
81.2
52.7


All treatments applied post emergence May 25, when corn was 18-24 inches high
and weeds 3-6 inches high.
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: Greenville fine sandy loam.
Plots: Four 4-row plots of each treatment.


- 10 -


Acre
R 4
58.8
70.0
64.8
56.2
94.2
69.1
69.1
88.2
83.8
57.9
72.6
70.0
58.3


Avg.
65.7
73.0
74.8
72.0
74.1
76.1
84.7
72.6
80.0
83.4
87.5
83.4
64.8


[







Table 2


HERBICIDAL CONTROL OF GRASS AND WEEDS IN COTTON 1973


Herbicide
Treflan
Treflan
Planavin
Planavin
CGA 10832
CGA 10832
Amex
Amex
AC 92553
Basf 3924H
Basf 3924H
Lasso
Lasso
Lasso + dinitro
Destun
Destun
Gulf S6044
Gulf S6044
Cotoran
Check Weeds


Lbs/A
1/2
1
3/4
1-1/2
3/4
1-1/2
1-1/2
3
3/4
1/2
1
2
3
1-1/2 + 3
2
3
3
4
3


Agricultural
Jay,
Method of
Application
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Ppi
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E


present: Goosegrass, Watergrass, Crabgrass,


Research Center
Florida
May 9 May
G BLW G
95 90 95
100 90 100
95 85 95
100 90 95
95 90 95
100 95 100
95 85 95
100 90 100
90 90 95
95 90 95
100 90 100
95 90 95
100 95 100
95 90 95
85 80 80
90 85 95
90 80 80
90 90 85
90 80 80


31
BLW
80
90
80
90
85
90
80
85
85
85
90
85
90
85
60
80
75
85
75


bur, Sickle Pod, Morning Glory, and Texas Sandbur.
G = Grass; BLW Broadleaf weeds.
Pre E Pre-emergence; Ppi = Preplant incorporated.
Cotton: Carolina Queen planted April 18. Stand good.
Incorporated chemicals applied April 17. Incorporated 2-3 inches deep with power
driven rotary hoe.
Pre-emergence chemicals applied April 18.
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: Greenville fine-sandy loam.


- 11 -


I I


June 20
G BLW
90 65
95 70
85 50
95 65
85 60
95 65
90 60
95 70
90 40
90 55
95 60
85 60
90 70
85 60
65 40
80 60
40 30
55 45
70 40
Pusley,


July 12
G BLW
80 35
90 50
75 35
90 55
75 35
90 55
75 40
85 60
85 40
90 50
90 55
75 35
80 45
80 40
55 20
70 20
35 20
40 20
50 30
Redweed, Cockle-







Table 3


HERBICIDAL CONTROL OF GRASS AND WEEDS IN GRAIN SORGHUM 1973


Herbicide
Rotate
Rotate
Rotate
Igran
Atrazine
dinitro
dinitro
dinitro
Bladex
Bladex
Bladex + AtrazJ
Bladex + Lorox
Bladex + dinitr
Lorox
MC 4379
MC 4379
Rotate + Lorox
Rotate + Lorox
dinitro + 2,4D
Check


Lbs/A
1
1-1/2
2
2
2
3
4-1/2
3
2
3
ine 1+1
1+1
:o 1+3
2
1-1/2
3
1+1
2+1
3+1
Weeds pre;


Agricultural
Jay,
Method of
Application
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Needle stage


sent:


Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E
Pre E


Research Center


Florida
May 9
G BLW
75 60
80 60
85 70
95 90
95 90
80 60
85 75
85 80
85 80
95 90
95 90
95 95
95 90
90 90
95 85
95 85
95 90
85 75
90 85


Goosegrass, Watergrass, Crabgrass, Barnyard grass,
Pusley, Sickle Pod, Cocklebur, Redweed, Morning
Glory.


G = Grass; BLW = Broadleaf weeds.
Pre E = Pre-emergence; Ppi = Preplant incorporated.
Variety: DeKalb BR-64 planted April 18 at the rate of 10 pounds per acre.
Herbicides: All herbicides were applied as pre-emergence spray April 18. 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: Greenville fine sandy:loam.
Plots: Four 4-row plots of each treatment.


- 12 -


May 31
G BLW
60 65
70 70
85 65
85 90
95 95
70 50
80 65
80 70
95 75
95 85
90 95
90 85
90 70
90 80
90 80
95 85
70 60
85 8C
80 70


June 12
G BLW
65 60
70 70
80 70
90 85
95 90
70 60
80 60
80 60
90 80
80 80
90 85
95 90
90 80
80 65
80 75
85 75
80 70
80 70
90 70


July 12
G BLW
65 55
70 55
70 60
85 75
85 75
65 50
70 55
70 60
80 75
80 70
80 75
90 00
80 70
80 60
70 65
75 65
80 60
70 60
75 60


i







Table 4


HERBICIDAL CONTROL OF GRASS AND WEEDS IN PEANUTS 1973

Agricultural Research Center
Jay, Florida


Herbicide
Balan
Balan
Balan + dinitro
Planavin
Planavin
Planavin + dinitro
Amex
Amex
Basf 3924H
Basf 3924H
CGA 10832
CGA 10832
AC 92553
AC 92390
Dacthal
Dacthal
Dacthal
Lasso
Lasso
Gulf S6044
Gulf S6044
Gulf S6044
Destun
Destun
Destun
RP 17623


Method of
Lbs/A Application
374 Ppi
1-1/2 Ppi
3/4 + 3 Ppi Pre E
3/4 Ppi
1-1/2 Ppi
3/4 + 3 Ppi Pre E
1-1/2 Ppi
3 Ppi
1/2 Ppi
1 Ppi
1 Ppi
1-1/2 Ppi
3/4 Ppi
1 Ppi
6 Pre E
9 Pre E
12 Pre E
2 Pre E
3 Pre E
3 Pre E
4 Pre E
5 Pre E
2 Pre E
3 Pre E
4 Pre E
2 Pre E


May 14
G BLW
100 90
100 95
100 90
95 90
100 95
95 90
95 90
100 95
100 90
100 95
100 90
100 95
100 95
100 90
100 90
95 90
100 85
100 90
100 95
100 85
100 85
100 90
95 85
95 90
100 90
90 90


June 5
G BLW
95 80
100 85
90 85
90 80
100 85
90 80
90 75
95 90
90 80
95 85
95 75
100 90
95 85
95 75
95 70
90 75
95 65
85 75
90 85
90 65
100 55
100 80
85 55
85 70
90 75
75 75


June 26
G BLW
65 45
75 55
70 65
70 65
85 75
80 65
75 60
85 75
80 55
80 65
80 65
85 70
80 65
80 65
80 60
75 60
75 55
70 55
75 65
80 45
80 45
90 55
70 55
70 60
80 65
60 65


July 26
G BLW
35 20
60 20
50 20
35 10
70 25
55 20
30 10
55 25
45 20
40 10
45 15
70 40
50 25
60 20
60 10
45 15
65 20
40 25
40 20
70 10
75 10
75 10
45 10
30 20
40 15
20 35


Check Weeds found in non-cultivated check: Crabgrass, pusley, morning
glory, and pigweed. 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: Florunner planted April 23. Stand good.
Herbicides: Rate expressed in pounds of actual material on a broadcast basis. In-
corporated materials applied April 22. All pre-emergence treatments applied
May 24.
Plots: Four 4-row plots of each treatment.
Weather: There was a good supply of moisture at planting and throughout the season.
Soil type: Red Bay fine sandy loam.


- 13 -







Table 5


HERBICIDAL CONTROL OF GRASS AND WEEDS IN PEANUTS SPRAYED
AT EMERGENCE OR "CRACKING TIME" 1973


Agricultural Research Center
Jay, Florida


Herbicide
Balan + dinitro
Balan + Lasso + D
Dalan + Lasso d:
Lasso + dinitro
Lasso + Dyanap
Dyanap
dinitro + Falone
dinitro + Tok
Basf 3517H
dinitro + Ronstar
dinitro + Ronstar
dinitro
dinitro
Check We4


Lbs/A
1+3
vanap 1 + 2 + 3
initro 1 + 2 + 3
2+3
2+3
1-1/2 Gal.
1-1/2 + 2
1-1/2 + 3
1 lb.
1-1/2 + 1
1-1/2 + 2
4-1/2
6


eds in


check: Cral


Method of June 5 June 26 July 26 Aug. 17
Application G BLW G BLW G BLW G BLW
Ppi Emer 100 95 95 85 75 70 60 15
Ppi Emer 100 95 100 90 85 70 70 20
Ppi Emer 100 100 100 90 85 75 70 30
Emer 100 100 95 90 80 75 65 20
Emer 95 95 80 85 65 70 20 25
Emer 95 95 75 75 60 65 25 20
Emer 95 95 85 70 65 65 25 30
Emer 95 100 85 85 70 65 30 15
Emer 90 85 30 60 30 30 20 30
Emer 95 95 75 85 65 70 25 30
Emer 95 100 90 95 75 70 40 40
Emer 95 95 75 75 65 55 25 20
Emer 100 95 75 60 65 50 25 10
grass, Florida pusley, morning glory, and pig-


weed. Sandbur, cocklebur, sickle pod, beggar weed, and ragweed
were present but not in uniform stands.
G = Grass; BLW m Broadleaf weeds.
Emer = Emergence; Ppi Preplant incorporated.
Peanuts: Florunner planted April 23. 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,
1973, except Balan which was preplant incorporated April 28.
Plots: Four 4-row plots of each treatment.
Weather: Moisture was plentiful at planting and throughout the growing season.
Soil type: Red:Bay fine sandy loam.


- 14 -


-







Table 6


HERBICIDE CONTROL OF GRASS AND WEEDS IN SOYBEANS PLANTED IN :i
Agricultural Research Center
Jay, Florida


Herbicide
Treflan
Treflan
Planavin
Planavin
Planavin + dinitro
Planavin + Lorox
A820
A820
Basf 3924H
BaSf 3924H
CGA 10832
CGA 10832
AC 92390
AC 92553
Treflan + Sencor
Treflan + Sencor
Treflan + Sencor


Lorox
Lorox
Surfian
Rotate + Lorox
Rotate
Rotate
Amiben
Amiben + Lorox
Dinitro


Lbs/A
1/2
1
3/4
1-1/2
3/4 +
3/4 +
1-1/2
3
1/2
1
3/4
1-1/2
1
3/4
1/2 +
1/2 +
1/2 +
i/4
1/2
3/4
3/4 +
3/4 +
1-1/2
3/4
2
3
1-1/2
1-1/2
1-1/2
1-1/2
1-1/2
1
2
2
2+1
2
3
3
2+1
6


3
1








1/4
1/2
1/4



1/5
1/4
+ 1/2


1/4
3/8
1/2
2 qt.
1


Method of July 11 Aug. 6 Aug. 23
Application G BLW G BLW G BLW
Ppi 95 85 95 75 90 60
Ppi 100 90 95 80 95 60
Ppi 95 85 90 70 85 60
Ppi 100 85 100 75 90 70
Ppi + Pre E 100 90 95 70 90 65
Ppi + Pre E 100 90 95 80 90 60
Ppi 100 85 95 65 90 55
Ppi 100 90 95 75 90 65
Ppi 100 85 95 75 90 70
Ppi 100 90 100 75 90 65
Ppi 100 90 95 75 90 60
Ppi 100 85 100 85 95 60
Ppi 100 90 95 85 90 80
Ppi 100 90 95 80 90 80
Ppi 100 90 100 70 90 70
Ppi 100 95 100 85 95 85
Ppi + Pre E 100 95 95 70 90 70
Pre E 95 90 85 70 85 70
Pre E 95 90 90 85 85 70
Pre E 100 90 95 85 90 70
Pre E 95 90 95 75 90 75
Pre E 95 90 95 85 90 80
Pre E 95 90 95 90 90 80
Pre E 95 85 90 70 90 75
Pre E 95 90 95 80 90 80
Pre E 100 90 100 85 90 80
Pre E 100 85 100 70 90 65
Pre E 100 90 95 80 90 80
Pre E 100 95 95 90 90 80
Pre E 100 90 100 85 90 80
Pre E 100 95 100 90 90 85
Pre E 100 90 85 75 85 75
Pre E 100 95 90 85 90 90
Pre E 95 90 95 80 90 80
Pre E 100 95 90 85 85 75
Pre E 95 90 85 75 75 70
Pre E 95 90 80 75 70 65
Pre E 95 85 85 65 85 55
Pre E 100 90 90 75 85 70
Pre E 100 95 90 95 95 95


Sept. 11
G BLW


Check Weeds present: Goosegrass, crabgrass, pusley, red weed, cocklebur,
sickle pod, morning glory, and Texas sandbur.
G Grass; BLW Broadleafed weeds; Pre E = Pre-emergence; Ppi Preplant incor-
porated.
Herbicide: Expressed in pounds of actual material on broadcast basis. Incorporat-
ed material applied June 25. Pre-emergence material applied June 26 & 27.
Beans: Hampton planted June 26 in rows. Plots: Four 4-row plots of each treatment.
Weather: Moisture plentiful at planting and throughout the growing season.
Soil type: Greenville fine sandy loam.
Plots: Four 4-row plots of each treatment.


- 15 -


Sencor
Sencor
Sencor
Surflan
Surflan
Surflan
Surflan
Lasso


Lasso
Lasso
Lasso
Lasso
Lasso
Lasso


Sencor
Sencor
Sencor


+ Sencor
+ Sencor
+ Sencor
+ Dyanap
+ Lorox