HISTORIC NOTE

The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.

Copyright 2005, Board of Trustees, University
of Florida

AY 84-3

Research Report

turf nd
Iworna menal
Seeds ience,"

~~re earc,

W.L. CURREY
UNIVERSITY OF FLORIDA

Ag(onomy
^ *cr
C?

TURFGRASS/ORNAMENTAL WEED SCIENCE RESEARCH REPORT

PREFACE

Weed science in Florida is conducted at many IFAS research centers
and grower field locations due to the great diversity of crop and weed
associations. Both research and extension faculty from many disciplines
participate in studying weed problems and evaluating control techniques.
We acknowledge the assistance of our weed science technicians and grad-
uate assistants: John Goette, Larry Hacker, Bruce Nicely, Paul Turner,
Mike Riffle, Kevin Perry, Dan O'Byrne, Jane McKinnon, and Tom Willard.
A special thanks to Mary Ann Andrews for tabulation of data and prep-
aration of all reports. Special thanks also to Glen Saint Mary Nursery,
Jones Turfgrass Farm, University of Florida Golf Club, and A. Duda and
Son Sod Division, for assisting with plant material for many of these
studies.
/
The experiments included here were supported by state and federal
appropriations and commercial gifts and grants. Appreciation is extended
to the following companies for providing financial support, equipment,
herbicides, and other pesticides.

American Cyanamid-Company
American Hoechst
BASF Wyandotte Corporation
.- .-:Chevron- Chemical Company-
Ciba-Geigy Corporation
Dow Chemical Company
E. I. duPont Company
'Eli Lilly Research
ICI America

3-M Agrichemicals
Mobay Chemical Corporation
Monsanto Ag. Products Company
PBI Gordon Corporation
PPG Industries
Rohm and Haas Company
Rhone Poulenc Chemical Company
Shell Development Company
Stauffer Chemical Company.

It is hoped that these data will be of value to all those interested
in weed science. This information does not constitute a recommendation
or endorsement and is not for publication without consent of the authors.

CONTENTS

TURFGRASS PAGE

HERBICIDE EVALUATIONS ON BERMUDAGRASS I
EVALUATION OF PREEMERGENCE HERBICIDES FOR WARM-SEASON TURF 4.
HERBICIDES FOR POSTEMERGENCE BROADLEAF WEED CONTROL 6
EVALUATION OF SEVERAL POSTEMERGENCE GRASS HERBICIDES FOR.
SELECTIVITY IN BAHIAGRASS 8
TOLERANCE OF COMMON CENTIPEDEGRASS TO POSTEMERGENCE GRASS
HERBICIDES 11
TOLERANCE OF FLORATAM ST. AUGUSTINEGRASS TO POSTEMERGENCE
GRASS HERBICIDES 15
POSTEMERGENCE CONTROL OF DIGITARIA IN CENTIPEDEGRASS WITH
PAST AND COMBINATIONS

ORNAMENTALS

GRANULAR HERBICIDE STUDY IN CONTAINER-GROWN WOODY ORNAMENTALS 20
TOLERANCE OF CONTAINER-GROWN WOODY ORNAMENTALS TO PAST 22/
TOLERANCE OF CONTAINER-GROWN WOODY ORNAMENTALS TO FUSILADE 24
TOLERANCE OF CONTAINER-GROWN WOODY ORNAMENTALS TO FUSlLADE 24

UNIVERSITY OF FLORIDA
.*J." WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Herbicide Evaluatinn. nn Bermudaarass
YEAR 1983

EVALUATOR W.L. Currey,T.R. Willard, J.M. Goette. D.J3 O'Ryrnp_

LOCATION University Golf Course-Driving Range COOPERATOR J. Perham

VARIETY Ormond SEEDING RATE PLANTING METHOD

DATE PLANTED Established SOIL TYPE Loamy fine sand SOIL pH .

EXP. DESIGN RCB REPS 4 PLOT SIZE 5' X 10'

APPLICATION CONDITIONS

PPPE & POST- PRE-GRANU
APPLICATION TIME SPRAY PRE-GRANULAR .
Type & Date 5-20-83 5-20-83 ___

Time of Day 10:00 am 10:30 am _
EQUIPMENT CO2 Backpack Shaker Can

Nozzle Tips' 3-11003 _

Volume 20 GPA

SPressure 24 PSI

Speed 3 MPH

WEATHER _

Wind 4-6 MPH S 4-6 MPH S ".

Air Temp. 280C 280C __--

Soil Temp.. 250C 250C

Soil Moisture Dry Dry._

Relative Humidity 60% 60%

Sunligh t Sunny Sunny

Rain after Application

Other Pesticides, Weather Trends, Weed Size, etc

COMMENTS: Dates, Fertility, Irrigation,

rhokrM

UNIVERSITY OF FLORIDA
WIEEl SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Herbicide Evaluation On Bermudagrass

TREATMENT

RATE
Ib/A a. i

S WEED SPECIES 0-10 CONTROL & CROP INJURY

6-3-83 14DAA I 621-8331 A ..
FdT I ; I

YELA 1983

CROP
YIELD

1 Check --- 0 i 0 .....

2 EH-697 1.63 GPA 0 9 __. ..-

3 EH-697 3.26 GPA 2. __ L

4 EH-707 1.74 GPP -- -

_ EH-Q7__ 3.48 GP ----
EH-719-3 1.63 GPA 2_ 0 9

7 EH-719-3 3,26 GP -i. 0 9_. --

8 Check"" 0 0n___ 0 ---

SSencor 75DF 0.25 0 __ 0 9
___________ -
j_ Sencor 75DF _0.50 3.1 '

11 Sencor 75DF 1.0 I 0 9 I ...

12 Sencor 75DF + MSMA 3.125+2.C 0 _'

Sencor 75DF +i MSMA

l. 1 R+2..

14 Sencor 75DF + MSMA 25+2.0 15.0 ___9 _

Sencor 75DF + MSMA

0.38+2.0

16 I-.. Al. 4.- c

Trt.
No.

_ ____ __ ~

-- ---'---~-- I---"

---~ i -------~- --

--- ~---- 1-

,u (---~-;--;;l-riiii-- ---- --r --"F r- -r --r---l~'-c1 ;--1 ---

n I. n .

16

I, '

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT

Trt.
No.

17

18

19

Herbicide Evaluation On Bermudaora~n

- --------.---------..- ----- *-- -- .__ ----

TREATMENT

Balan + Surflan (1:1) 2G

Balan + Surflan (1:1) 2G

Balan + Surflan (1:1) 501P

Balan + Surflan (1:1) 50WP

alaB n + Trefl an (2: 1 1 20

RATE
Ib/A a.1

1.5

2.0

WEED SPECIES 0-10 CONTROL & CROP INJU

b-3-H3

14 I1A1

,,,,U ,z~ *,I---

SI O-1-0o3 "I nflA I

LI G=-T-I- I

2.0 0 0 9

1.-. 0 n 8

22 Balan + Treflan2 (L) 2: G 2.0 Q 0 9
23 Ralan 9 5G 3.0 0 0 9

24 n A.Shn P g 3.0 n 0 9, .
_2j_ Rnstar 2G._.........___3.0, iL -0.2... .-____.

25 Check" n 0

S GG=Goosearass {(F1 usi.n indica) tn

CI =Crop -jIryI-OherLen na-fl= dlteh -
-

^___ _ _______. __ ^ __ _ __t

oi

YEAR 1983

RY
CROP
YIELD

Herbicide~~~ Evauaio On Bemuaaa

-%
UNIVERSITY OF FLORII)A
WEED SCIENCE DAIA SUtIMARY
FIELD PLOT OBSERVATIONS

'-~--- -- --

1-- --1. ~--I -r -~---? -t -t -~--'I----

---~--

--

-1 -- -

f II

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Evaluation of Preemergence Herbicides for Warm-Season Turfqrasses

YEAR 1983

EVALUATOR W.L. Currey and T.R. Willard

LOCATION Chantilly Acres Hort. Unit COOPERATOR Dudeck
Pensacola Bahiagrass
VARIETY Common Centipedegrass SEEDING RATE PLANTING METHOD

DATE PLANTED EstabJisnedSOIL TYPE .Arredondofine sand SOIL pH_

EXP. DESIGN RCB REPS 4 PLOT SIZE 4' X 10' _

APPLICATION CONDITIONS

..-PRE PRE
APPLICATION TIME (soray+gran. (Spray+Gran.)
Type & Date 4-5-83 6-7-R ___

Time of Day 8:30 a.m. 10:30 am____
CO Backpk CO Sprayer
EQUIPMENT + .ran. skr +GPan. Shkr.

Nozzle Tips 2-11002 2-11003

Volume 20 GPA 20 GPA

Pressure- ---- --- -35 PSI --- -24 PSI

Speed

3 MPH

3 MPH

WEATHER

Wind 0-5 MPH E 0-4MPH NE __

Air Temp. 270C 290C .."-

Soil Temp. 210C 260C

Soil Moisture Moist Moist _
Relative Humidity High High ___ ___

Sunlight Sunny Overcast ___

Rain after Application

COMMENTS: Dates, Fertility, Irrigation, Other Pesticides, Weather Trends, Weed Size, etc.

4/2183 Overseeded Bahiaagras and rPntijpedrass plots at Hort. Unit with mixture
of Diditaria sp.., Flpiuinp indiec, and Browntop Millet.

4/12/83 No differences in weed control and turf injury at 7 day rating
5/21/83 Treated Bahiagrass and Centipedegrass with 2,4-D + Dicamba will repeat
experiment around June 5.
6/13/83 Overseeded into a vericut strip with Digitaria sanguinalis

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT.OBSERVATIONS

EXPERIMENT EVALUATION OF PREEMERGENCE HERBICIDES FOR WARM-SEASON TURFGRASSES

YEAR 1983

Trt.

RATE

WEED SPECIES fl-in cONTRnl 7a ChOP JN,11112Y

CROP

No. In(tl\lMi' I "-Ib/A a." lit-- -,-1. I -l I.-- Y^b
_/A__ _a. __ YIEL)

1 Check 0 0

2 Balan + Surflan 2G 1.5 0 _

3 Balan + Surflan 2G 2.0 0 0

4 Balan + Surflan 50WP 1.5 0 0

5 Balan + Surflan 50WP 2.0 0 ,0

6 Balan + Treflan 2G 1.5 0 __ 0

7 Balan + Treflan 2G 2.0 0 _. 0 ...

8 Balan 2.5G 3.0 0

9 Ronstar 2G 3.0 0 _

10 Ronstar 2G _6. n_

INJ = Injury 0-10 scale

.- - -- -

' P" r h "I"| i r li"1"

--

--- --------

I --~- ---

-- ------- ---'-'

- '--- ---

WEE SPEIE 0-1 CONRO & RONJR

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Herbicides For Potemergence Broadleaf Weed Control

YEAR 1983

EVALUATOR W.L. Currev.'T.R. Willard, J.M. Goette. D.0. n'BRvyrn

LOCATION University Golf Course-Drivinq Range COOPERATOR J. Perham

VARIETY Ormond SEEDING RATE PLANTING METHOD

DATE PLANTED EstablishedSOIL TYPE Loamy fine sand SOIL pH .

EXP. DESIGN Strip Test REPS 1 PLOT SIZE -5' X 40 '
T / .I '

APPLICATION

CONDITIONS

APPLICATION TIME POST
Type & Date .. .5-20-83____ __

Time of Day 12:00 N ___

EQUIPMENT COQ Backpack

Nozzle Tips 3-11003

Volume, 20 GPA _____

Pressure 24 PSI ..____-:. -

SSpeed 3 MPH _

WEATHER _____

Wind 4-6 MPH S

Air Temp. 3300C________

Soil Temp. 260C .,

Soil Moisture Dry_

Relative Humidity 60% ____

Sunlight Sunny ____

Rain after Application

Irrigation, Other Pesticides, Weather Trends,

___
__
L---------
--------

--~--

Weed Size, etc

COMMENTS: Dates, Fertility,

UNIVERSITY OF FLORIDA
W.EI) SCIENCE DATA SUMMARY
FIELD PLOT :OBSERVATIONS

EXPERIMENT Herbijcdes fior Postemergence

Trt.1
No.

TREATMENT

BroadlleafjWeed Control _._- __ -

---`-------I

RATE
Ib/A a.i,

WEED SPECIES 0-10 CONTROL & CROP INJU

I O-L1--a

hum l.ii

--------- I I -D I -

Chewk

N

YLAR 1983

RY
RY. CROP
YIELD

2 Esteron 99 ___0.5 4 9 10 7 2 8

3 Garlon 0,25 S5 10 q 1 8

4 Dicamba .... 0.25 0 5 5 2 0 8

_5 M_ C.PP___ 1 0.75 0 5 7 3 0 10 .

.._. Trimec ._ ......___ IX 3 9 1 '9

7 Garlon + Esteron 99 .125+.25 5- _8 J _p 4. 10...

S Garlon + Esteron 99 1+3p 7 1 104 10 5 10

.9 Weedmaster (2,4-D + Dicamba) 0.5+0.17 0 8 8 6 1 10

SEH2H7_- .1.74GPA 6 10 0

11 Buctril 0.5 O 9 .

BI=BRrmudanraq Tninrvy

iSCC=Swinecress(Corononis didvmti~

OxC=Oxalis Control

Control 7: J 7 ~ 1 ....

' SSC=Spotted Spurge Control
BLW=Heed Control of broadleaf weeds (Swinecress and Oxal-

- 4I-- -. -t

'"---

,,--,, ,,,,,,

_._._.. c -- --

I ---- -' L -' -I J --I--. ~-~r-+---l---~- -

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

----1- 1-1----1)--1 -1- I --'

--

---------------~-c~ -t--C---l-~-JI-I ~ ~ I I L I 1 L_ _I _.L I __

-6-3-83

C CSjI B OxC j SSC

-'----LI'

''
~--- ~L

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Evaluation of Several Postemergence Grass Herbicides For Selectivity in
YEAR 1983
Bahiaqrass. _YEAR 983

EVALUATOR T.R. Willard, W.L. Currey, B. Nicely

LOCATION Green Acres-Front Fenceline COOPERATOR

VARIETY SEEDING RATE PLANTING METHOD

DATE PLANTED Estab3ishedSOIL TYPE Loamy Fine Sand SOIL pH_

EXP. DESIGN RCB REPS 3 PLOT SIZE 4' X 10'
i

APPLICATION

CONDITIONS

7-20-83
APPLICATION TIME- .2 3
Type & Date POST_

Time of Day 10:30 am______

EQUIPMENT CO2 Backpack

Nozzle Tips 2-11003 __

Volume -.....-- -GPA- ______

Pressure '29 PSI

Speed 3 MPH

WEATHER_

Wind 0-2 MPH Var._

Air Temp. 35.C _

Soil Temp. 32C

Soil Moisture 1Moist

Relative Humidity High -

Sunlight Sunny-Bright

Rain after Application

COMMENTS:

7-20-83

Weed Size, etc

Dates, Fertility, Irrigation, Other Pesticides, Weather Trends,

Bahiagrass mowed immediately prior to annlicatinnm to 3-4"

--
---

I -

UNIVERSITY OF .FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Evaluation of Several Postemergence Grass Herbicides for Selectivity in Bahiagra.SL ___.YEAR 1983

W-- I EED SPECIES 0-10 CONTROL & CROP INJURY
Trt. RATE ah grass NJ@DAACROP
No. TREATMENT lb/A a. I a18 26- 5-- YIELD"--

1 Poast + Crop Oil (1.0 qt./A) 0.0625 0.3 0 0 0_.
2 I 0.125 1.3 1.3 0.31 0
3 I" "II 0.25 1.7 3.7 1.3 0

4 Check 0 L 0 0, 0 i -
5 Fusilade + Crop Oil (1.0 qt./A) 0,0625 1.3 3.0 2.0 0 .- --.
6 __" ___0.125 3.3 3.7 1.7 0 '

7 "0.25 .7 6.3 3.3 0
8 HOE A25-01 + Crop Oil (1.0 qt./A) 0.125 .3 2.0 1.3 0 3 -
,, ,, ,, 0.25 .3._ j .Z. Q ... - -. ...... -- ---
9 0" " 0.25 3.7 3.7 1,7 0 .. .. ------
10 I" "" i ,I 0,5 Q.3 5.0 3.3 0 1 --
.L Check 0 0 0 0 -
12 Dowco 453ME + Crop Oil (1.0 t./A) 0.0313 2.7 4.7 4.7 0
13 I"" i, 0.0625 .7 6.0 6.3 0 .

_4. : 0.125 5.3 .3 .8.7 _0_ ....

Jil DPX-Y6202 + X-77 (0.25%l vy ) 0.015 QJ 0-..0 -- ---- .- -
S" 0.0313 1.7 1.7 1.0 0

PAGE 2

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT.OBSERVATIONS

EXPERIMENT Evaluation of Several Postemergence Grass Herbicides for Selectivity in Bahiagrass YEAR 1983

Trt. RATE WEED SPECIES 0-10 CONTROL & CROP INJURY C
No. TREATMENT lb/A aa. a s 8 JDA .YILD
___N_______a_.i __ 11 18 26 53 -^----r:r:

17 DPX-Y6202 + X-77 (0.25% v/v) 0.0625 6.3 6.0 3.3 0. -

18 Check 0 0 0 0 -

19 CGA 82725 + Crop Oil (1.0 qt./A) 0.0625 1.0 1.3 0.3 0 .. .

20 ". 0.125 2. 73.0 01.30 -
S_ 0.25 3.3 5.3 2.0 0 .

22 Selettone + Crop Oil (1.0 qt./A) 0.125 2.0 2.3 0.7 0

23 0.25 5.3 4.0 1. 0 .

?4 .5 7.0 6.3 3.7 0 -
25 Check 0 0___ 0 o 0 _

t* L I

IL

WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Tolerance of Common Centipedeorass To Postemergence Grass. Herbici.des

'

(EAR 1983

EVALUATOR T. R. Willard, W. L. Currey, et. al.

LOCATION Jones' Turf-Grass Farm, Ft. McCoy Florida COOPERATORLeonard Reid

VARIETY Common CrntippdeSra-s SEEDING RATE PLANTING METHOD

DATE PLANTED Established SOIL TYPE Loamy Fine Sand SOIL pH 5.8

EXP. DESIGN RCB REPS 4 PLOT SIZE 5' X 10'

APPLICATION CONDITIONS

POST
APPLICATION TIME.- 8-18-83
Type & Date ___

Time of Day 11:30 am

EQUIPMENT CO2 Backpack

-Nozzle Tips 3-11003 LP_____

Volume 20 GPA

Pressure -- 22 PSI ...._____ .. .____

Speed 3 MPH_

WEATHER

Wind -0-2 MPH E______

Air Temp. 35._

Soil Temp. t33o_

Soil Moisture Mni __st _

Relative Humidity 60;_ _

Sunlight Sunny ___

Rain after Application ____

COMMENTS: Dates, Fertility, Irrigation, Other Pesticides, Weather Trends, Weed Size, etc

8-18-83 Common Centipedegrass maintained at 2?5"

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT, OBSERVATIONS

EXPERIMENT Tolerance of Common C~nti 'npdonrIa to Postemeraencrp Rrasp MHrhe-i h t

-- V__ _-~-~- -------

Trt.
No.

TREATMENT

RATE
Ib/A a.1i

n K9I

WEED SPECIES 0-10 CONTROL & CROP INJURY

entiDede INJ@DAA ICG Contrnl 0 9QnAA 1

1 I 9 I A1C

CROP
YIELI)

1 Check 0 0 00 0 _O

2 Check 0 0 0 0 _

3 Check _0 0 0

4 X-77___ ./ 0.25%v/v 0 0 o .0.

5 Check 0 0 0 0 '

6 HOE A25-01 0.12 3.5 0.30.5 3, C .

7 + Crop Oil (1.0 qt./A) 0.12 3.3 0.50.5 4.. ..

8 0.18 3.3 0.8 0 6,C

9 + Crop Oil (1.0 qt./A) 0.18 3.8 0.3 0 6.__

10 _" ____ n 5.8 3.81. 3 9_ 9.-

.11 __0.5 55 4 .8.

12 ..Past+ Crop Oil (.0 qt/A) : 0.125 0 0 0 .r -. ..

- 1 __ 0.25 0 0 .3 9 .... --

II II II II

0.375

n.R

0.5 0.3 0

1 1 0 3l .

1 1 AlA AI~

II II II II II

n I I r ..& I. s*s I -. I I n) I r -I. I -1

r-

YEAR 1983_

S151. :

,,,,,.,,~~.~

.~---;;;;-3ii--=-~;;~Y-LYYItLL-LLL-Y -- -C-CC~"~~ir~--- I---

I

-r --)rr- ----~-- ULY ~~_--C-------------

-' -------- ------ --- -I -, I-----t---1 t-c)-ct

.l.N. J..J,..Tt.i ..--- |-- i .~--*| _.i I I -__4_4 .- -. 4-- & --_ _

PAGE 2

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Tolerance of Common Centipedegrass to Postemergence Grass Herbicides ____YEAR 1983

Trt. RATE WEED SPECIES 0-10 CONTROL & CROP INJURY C
No. TREATMENT lb/A a.i Qeitiee INJ@AA CG Control @ 2DAA CROP
15 29 1. Y2IELD
17 Poast + Crop Oil (1.0 qt./A) 0.75 3.0 b.80.3 9.6
18 Check 0 O
19 Fusilade + Crop Oil (1.0 qt./A). 0.0625 2.8 1.50 6.E
20 ." 0,125 4.5 53.2 8.-
91 ___ 011 t 1 6.0 4843 9.1 -
22 Dowco 453ME + Crop Oil (1.0 qt./A) 0.0313 3.0 1.5. _0 8. .__
23I 0.0625 5,0 4.81 8.__
24 0.125 7.3 7.33.8 9.
25 DPX-Y6202 + X-77 (0.25% v/v) .015 0.3 0 0__ 3. 3
26, __13 3.0 2.01,5 6.E
27 0.0625 5.0 4.5 9. .
28 CGA 82725 + Crop Oil (1.0 qt./A) 0.0625 1. 1-8 7.
29 I : 0.125 5.0 2.8).5 8.

.30. "'_ 0.25 6.3 7.0 .0 9. ____
1L Check_. O 0 __ .
32 Sdlectone + Crop Oil (1.0 qt./A) 125 0 Q .

VAGE 3

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUIMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Tolerance of Common Centipedegrass to Postemerqence Grass Herbicides YEAR_ 1983

Trt. RE WEED SPECIES 0-10 CONTROL & CROP INJURY CR0'
No. TREATMENT lb/A a.i ti NJ@AA CG Control @ 29DAA NS Control K C AA LC
S______T________________ lb/A a.i 5 2946 29 .29 .. .... YIELD

33- Selectone + COp OIL... ..qt.) 0.25 0.5 0 0 .a. --.

34 0.5 1 __ 90 _9.5
35. Oust 0.75 oz 0 0 0 0__ 10 8.3
36 1.5 oz 0 0 0.3 8.3 7_ .3
3 3 0 0 0.8 Q .. .a3
,2.. Crop Oil 1 qt/A 0 0 __ 0

INJ Injury
CG = Digitaria ciliaris & D. bicornis
NS = Nutsedge, Cyperus compressus

lCyperus polystachos
Cyperua retrorsus

EXPERIMENT

15
'-.-'---- UNIVERSITY OF FLORIDA --.-.
WEED SCIENCE EXPERIMENTAL CONDITIONS

S Tolerance of Floratam St. Augustineqrass to Postemeraence Grass Nerbicide
YEAR S198_

EVALUATOR T. R. Willard, W. L. Currey & et al

LOCATION Jones Turfgrass Ft. McCoy, Fl COOPERATOR iLenard Rei

VARIETY Floratam SEEDING RATE PLANTING METHOD_____

DATE PLANTED Established SOIL TYPE Loamy fine Sand SOIL pH 5.8.

EXP. DESIGN RCB REPS 4 PLOT SIZE 5( x 10'

APPLICATION CONDITIONS

APPLICATION TIME Post
APPLICATION ME- 8-18-83
Type & Date 8-18-83 _____

Time of Day 2:30 PM
LU2
EQUIPMENT Sprayer _

Nozzle Tips' 11002 LP

Volumd- 20 GPA.

Pressure- "- 22 PSI _____

Speed 3'MPH ____

WEATHER

Wind 2-3 MPH NE '-_

Air Temp. 380t ____ .

Soil Temp. 32C _

Soil Moisture Moist

Relative Humidity 60%

Sunlight Sunny

Rain after Application

COMMENTS:

8-18-83

Weed Size, etc.

Dates, Fertility, Irrigation-, Other Pesticides,.Weather Trends,

S'Floratam' St. Augustinearass maintained at 4"

--
-" --
----------
---- ---

-- ---

UNIVERSITY UO FLORII)A
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Tolerance of 'Floratam' St. Augustinegrass to Postemergence Grass Herbicides YEAR 1983

Trt. RATE WEED) SPECIES 0-10 CONTROL & CROP INJURY CROP
Trt;" ---- -- -- -- -RATE"- nS Tl y ^ 'CiiOP"
No. TREATMENT lb/A a.1 or ----atam- YIEL
-IEL--D-- -- --

1 Asulox ... 2.0 0.8 2. 0 __
2 Asulox 4.0 1.8 2. 0
7Check __ 0 0 0
8 HOE A25-01 0.12 0.3 3. E -_-
SHOE A25-01 + Crop Oil (1.0 qt./A) 0.12 13 4. .. .
0 I" 0.18 1.5 4.0.5
S + Crop Oil (1.0 qt./A) 0.18 1 4.(0.5
12 0.25 1.3 4.81.3
-13 .._______" .0.5 ,5 1.8 --
14 Poast + Crop Oil (1.0 qt./A) 0.0625 0 1.L.3 ....__
S 0.125 0.. 4.. ....
16 ". 0.25 1..5 4E1.0 -
JZ ..Jusiad Crop Oil U .0 qt. /A) 62_ ._
18 n" q 0. 8 3 -._ ....
19 ; 0.25 8 ,3_ _
20 Check 0 .

PAGE 2

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Tolerance of 'Floratam'St. Augustinegrass to. Postemergence Grass Herbicides YEAR 1983

Trt. RATE WEED SPECIES 0-10 CONTROL & CROP INJURY
Trt. RATE F a NJ@ -.---. CROP
No. TREATMENT lb/A a.jI 1CtO5 29 4 '' -.. YIELD!

21 Dowco 453ME + Crop Oil (1.0 qt./A) 0.0313 0 .5 1.5
22 0.0625 0.83.8L
0 25 3. 15.3
24 DPX-Y6202 + X-77 (0.25% v/v) 0.00 0.5 --
25 It 0 1O.8 -
26 "__ "_ 0.0625 J1..0. -.5
27 CGA 82725 + Crop Oil (1.0 qt./A) 0.0625 .0 2.3 ..3
8 II to I 0.125 .4.0 3.0
'9 i i" 0.25 3. 5.0 .3
30 Selectone + Crop Oil (1.0 qt./A) 0.125 _LJ 2.8.3 .. __
31 i_ 0.25 1.8 3.' .0
32 "I 05 4. 0.5 0 --
_3_1 X-77 0.25%v/ _p_ _

t. Oust 0.75 oz 0 0.8 .5
5 __, .5
.36 4 .81' .5 _

3 Crop Oil

1 qt/A

d. 0 0,'-.,

EXPERIMENT

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

Postemergence Control of Digitaria in Centipedegrass with Poast

r

and Combinations YEAR 1983 -

EVALUATOR W. L.,Currey, J. M. Goette, & K. Perry

LOCATION Jones Turfgrass, Ft. McCoy, Fl COOPERATE

VARIETY Common Centipede SEEDING RATE _PLANTING METH

DATE PLANTED Unknown SOIL TYPE Loamy Fine Sand

EXP. DESIGN RCB REPS x PLOT SIZE 10' x 150'

APPLICATION CONDITIONS

OR Lonard R__

ODIL pHs

SOIL pH.5 -

Post Post
APPLICATION TIME- 8-19-83 8-19-83
Type & Date ________ ________ ____-._

Time of Day 11:00 AM 11:_0 AM .
Plot Plot
EQUIPMENT Sprayer Sprayer ___ .
Nozzle'Tips 6-11002 RAo et

Volume- 15 GPA 4 GPA

Pressure ---40 IPSI 21 PSI

Speed. 4 MPH 4 MPH

WEATHER ______

Wind 1-3 MPH NE 103 MPH NE

Air Temp. 330C 33 ______ .

Soil Temp. 320C 320C

Soil Moisture Moist Moist__

Relative Humidity 60% 60%

Sunlight Sunny Sunny __

Rain after Application__ _

COMMENTS: Dates, Fertility, Irrigation, Other Pesticides, Weather Trends,

-- I-
I- -
----
---
-----

Weed Size, etc.

-"

UNIVERSITY OF fLORID)A
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT POSTENERGENCE CONTROL OF DIGITARIA IN CENTTIPEDEGRASS 14TH PoIAST Arln BrnMRTIAT l8 YEAR_ 19_ .

Trt. RATE-- WEED SPECIES 0-10 CONTROL & CROP INJURY CROP
No. TREATMENT lb/A al. JCG CONlTRO 14 iAA INJ 14 AA YIELD
No. i TREATMENT I T 7
1 Check 0 00 0 0 0 0
2 Poast + Oil 0.38 7.0 7.0 7.0 1.0 0 0.5 ...
3 Poast + Oil + Atrazine .0.38+2.0 2.0 50J 3.5 0 0 0 ..
4 Poast + Oil + Sencor 0.38+0.3E 0 30 330 0 -0.
5 Oust 1.5 oz. 5.a 6- f 5.5 0 0 0
0.25+
6 Poast +.Oil + Oust 5_____ 6.0 8.,0 7.0 0 0 0.

7 Poast + Oil (CDA) 0.38 6.0.50 55 -- --
_...... ...- -
CG _COTOL __ A INJ 2 A -

1 Check 0 0 O... 0 .-
2 Poast + Oil A qn 7.. n 0 0...
3 Poast + Oil + Atrazine 0. 38+2.0 0 5.0 0 0
4_ Past + i + Sencor ~ __ L-3 l 0 0 0 0 -
5 Oust 1_.5 oz 9.5 10 0 0 0
0.25+
_6 Poast + Oil + Oust 0_t.5+D7 9.9 .9.9 ._9 0 _

7

Poast + Oil + (CDA).. 0.38 16.
CG = Digitaria bIcornis and Digitaria ciliaris

08.0 l.0O 0 0 I .. "0

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT

gR gill AR HFERICT0F STUDY IN CONTAINER-GROWN WOODY ORNAMENTALS

S YEAR 1982

EVALUATOR

LOCATION

VARIETY S

DATE PLANTED

EXP. DESIGN

W L CURRY T R WII'ARD

r. i-. V I. I -\LI I .^ i -- i,

iLEN ST. MARY'S NURSERY

EE ATTACHED LIST

6-1-82

RCBD

COOPERATOR L. TABOR
SEEDING RATE PLANTING METHOD_

SOIL TYPE POTTING MIX: PINE BARK, PEATSOIL pH
AND SAND
REPS 3 PLOT SIZE 3' X 12' 3 PLANTS/SPECIES/PLOT
12 SPECIES/PLOT
APPLICATION CONDITIONS

APPLICATION TIME 6-26-82 10-19-82 2-5-83
Type & Date GRAN. SHAKER GRAN. SHKE GRAN. SHKR

TIME OF DAY 8:00 a.m. 9:00 a.m. 1:00pm

EQUIPMENT Shaker Can Shaker Can Shaker Can Oameta Species
Ornamental Species
Nozzle Tips
,Nozzle Ti-ps '-. Aucuba japonica 'Serratifolia
-Volume -- Gardenia radicans

Pressure lex crenata 'Helleri'
Ilex hybrid 'Nellie R. Stevens'
Speed .=
Speed Juniperus conferta.ssp. compact
WEATHER Ligustrum lucidum 'Lake Tresca'

SWind 0-2 MPH vat. 0-2 MPH r O-5MPH var Liriope muscari 'Evergreen Giant'
SNandina domestic
Air Temp. 85 F 80 F 700F Pinus eiott

Soil Temp. 750 F 700 F 650F Pittosporum tobira 'Variegated'

Soil Moisture Moist Moist Moist Podocarpus macrophyllus
Viburnum macrophyl umn
Relative Humidity 75% 60% 55% Vibur
Cloudy Cloudy Sunny under
Sunlight .Shade rCloti- Shade ClotGSe Cloth
Rain After -
Application __

COMMENTS: Dates, Fertility, Irrigation, Other Pesticides,

6/l26l82

2/5/83

Weather Trends, Weed Size, etc.

Fnoliage was wet before application
Fnliagp wLa vpry wPt inp tn irrtigatinn
Irrigation and rain within 24 hours-

~L' "`Y -~---

UNIVERSITYY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENTGRANULAR HERBICIDE STUDY IN CONTAINER-GRDWN WOODY ORNAMFNTAIS __ _YEAR__

Trt. RATE WEED SPECIES 0-10 CONTROL & CROP INJURY CROP
0-12-82' 1.. 1-2'. 1 5-12-83 CROP
No. TREATMENT lb/A a.i F- rT XCI n- T YIELD

1 Handweeded Check .. 7.7 88.98.4 0 6.3 0 5__.9 0
2 Metolachlor 3.0 1.2 2:3 6.0 0 2.8 0 __ n_. ----
3 Metolachlor 6.0 0 10 5.4 0 .. 0.4 0
4 Metolachlor ___9.0 5.2 1.9 7.0 0_ 5.2 0 ._ 2.3 0
q Metolachlor+Simazine .3.0+0.8 6.1 9.6 7.2 0 65.6 0 __ ___ ..5 .-
S Meto1achlor+Simazine. .. 6.0+1.6 3.0 6.8 7.8 0 __Q.5 0 3.1 0 -
7 Alachlor 6.0 5.9 5.4 _0 7.4 0 .1__0JL-
8 Alachl ot+Sima7ine 6.0+0.8 5.9 2.3 0..5 0 .3 0 2.9 0-
j Oxyfluorfen(2%)+Pendimethalin (%) '2.0+1.0 Q. 102 10 I. 51 9.9 2.0 lo 35.5 --
10 Oxvfluorfen(2%)+Pendimethalin(1%) 4: .nL- 9 .7.2 10 3. 10 4.0 104.5 -.. .- ..-

x = Yellow Wood Sorrel (Oxal1s cornil:ulata) -- -- -- -
DF = Dog Fennel (Eupatorim eipllifn i m) -. --
CG = Crabgrass (Diitara sp .... .- .
CI = Crop Injury on 0-10 Scale (Only 1inoe mi +s ar L'e mr nnGia '-was in4

*Weed Control computed nn fnri h weigh-. I
of weeds and compared to least effective treatment

for each weed species

for. each weed es

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Tolerance of Container-Grown Iony Orn~rnmental to Poast
YEAR 1983

EVALUATOR W. L. Currey'and T. R. Willard

LOCATION

VARIETY

DATE PLANT

EXP. DESIGN

Glen St. Mary's Nursery _COOPERATOR L. Tabor
See Attached List SEEDING RATE PLANTING METHOD 6" Standard

ED 5/8Z SOIL TYPE 50% Pine Bark 25% Sand 25% Peat Moss SOIL pH 5.9 .
N CR REPS 4 PLOT SIZE 3' X 15' 14 species/plot 2 plants/species

APPLICATION CONDITIONS

.POST --- Ornametal SpPrf-i.. ,
POST
APPLICATION TIME -8-19-83 A a a
Type & Date Aucuba .-aponca 'Serratffoa'i -
Time of Day 10:00 am -_Gardenia radicans 0:
EQUIPMENT CO2 Backpack____ ex crenata 'Heeri'

Nozzle Tips '2-11006 1ex hyrid '-L R- ,Qr'n

Volume 40 GPA ___ Juimierus conferta sS corpcta

Pressure --- ---26- PSIr ___. ?ustrm 1 c Trsptcru'm
Speed 3 MPH Liriooe muscari 'Everqr an

WEATHER a__ ndina do resi _-

Wind 0-3 MPH var.____ Pinus elliotti

Air Temp. 30 C Pittosporum tobira 'Variegated'

Soil Temp. 270 C Podocarpus macrophyllus
Soil Moisture Moist_ Rhododidro -rp:N: lt
Relative Humidity 50% Rhododendron sp. Formosa Azalea'

Sunlight Sunny Viburnum macrophyllum
Rain after Application

Other Pesticides, Weather Trends, Weed Size, etc

COMMENTS: Dates, Fertility,

Irrigation,

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUMMARY
FIELD PLOT OBSERVATIONS

EXPERIMENT Tolerance of Container-Grown Woody Ornamentals to Poast YEAR 1983

Trt RATE WEED SPECIES 0-10 CONTROL & CROP INJURY C
No. TREATMENT lb/A a. I NU--RY DAA i- LD

_ Past + Crop Oi (1.0 qt./A) 0.25 -

+ 0.5 0
3 + 1.0 0 I
I, I- II It 0,, _
4 + 2.0 0

5 Check __ 0

.

) [,

UNIVERSITY OF FLORIDA
WEED SCIENCE EXPERIMENTAL CONDITIONS

EXPERIMENT Tolerance of Container-Grown Woody OrnamPntalr tn Fusilade
YEAR 1983
_-- ~ ,. "i

EVALUATOR W.L. Curry. T.R. Wil.llard. -M Gnottfp

LOCATION Glen St. Mary Nursery COOPERATOR L. Tabor

VARIETY See Attached List SEEDING RATE _PLANTING METHOD 6" Standard

DATE PLANTED 5/82. SOIL TYPE 50% Pine Bark 25% Sand 25% Peat Moss SOIL pH .

EXP. DESIGN CR REPS 4 PLOT SIZE3' X 15' 14 species/plot 2 Dlants/sperie

APPLIATI CON*. IO
". -APPLICATION CONDITIONS '-

APPLICATION TIME-
Trn9 e nm+n

Tlim~ nf flrv

POST
5-27-83

~I --

Aucuba japonica 'Serratifolia' -

tJr r~-- -

1:30 pm

Gardenia radicans

EQUIPMENT CO Ba pack Iex crenata 'HIeller '

Nozzle Tips ?-11005 Tpex hybrid 'NEllif R sten' P

Volume 40 GPA Jumiperus conferta sso'. comoacta-

Pressure 22 PSI tliScltrum n ucidutio 'Lak1e Trpe '

SSpeed 3 MPH Liriooe muscari 'Everore'eh Giant'

WEATHER Nandina donmtstic

Wind .0-2 MPH N Pinus elliotti _

Air Temp. 330C Pittosporum tobira 'Variegated'

Soil Temp. 35C Podocarpus macrophvllus :

Soil Moisture Dry Rhododendro-sop: "-tNepr'lhit-jh la', ,jl

Relative Humidi .50% Rhododendron sp. Formosa Azalea'

Sunlight .. .Sunny Viburnum macrophyllum

Rain after Application _________

Irrigation, Other Pesticides, Weather Trends, Weed Size, etc

I--- -
-~-------

~----

Y' I~L:L~LLYY L~ YY1 \-I~ i_

ul~~~-. r r e

~---~
--

-- 1 -1~-

r~m~m~nt~7 ~npr~p~c~

COMMENTS: Dates, Fertility,

UNIVERSITY OF FLORIDA
WEED SCIENCE DATA SUIMARY
FIELD PLOT OBSERVATIONS

EXPERINENT Tolerance of Continer-Grawn ,odyOrnament to- de -YI- -A 1J.- -

WEED SPECIES 0-10 CONTROL & CROP INJURY
No. TREATMENT Ib/A a. 7- 2 Fo m a A 23-8 Other pec s: ..
o ___ ib/Av w T..i) _j -1Y l) I ELI)

Check, -

Fusilade + Crop Oil 0.25 0

3, + 5 Q
+ "

~ - .

~ -
m-- -