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IR-4 Ornamental Horticulture Program
Research Report Cover Sheet
Trial: 2010 MI
Researcher(s) Hannah Mathers
Affiliation:
Ohio State University
248C Howlett Hall, 2001 Fyffe Ct
Columbus
OH
PhoneNumber: (614) 247-6195
[email protected]
Email:
ProjectTitle:
Protocol #:
43210-1096
Dimethenamid-p Crop Safety
10-001
PR#
Research Target
Crop/Plant
Product
29168
Phytotoxicity
Daylily
Tower (BAS 656h EC)
7969-239
Phytotoxicity
Hemerocallis sp.
Dimethenamid-p
BASF
ProjectTitle:
Protocol #:
EPA Reg. # Production Site
10-028
Research Target
Crop/Plant
Product
26220
Phytotoxicity
Tickseed
F6875 0.3G
-
Phytotoxicity
Coreopsis sp.
Sulfentrazone + Prodiamine
FMC
27678
Phytotoxicity
Phytotoxicity
Purple Coneflower
Echinacea sp.
F6875 4SC
Sulfentrazone +
27679
Phytotoxicity
Hydrangea
Phytotoxicity
Hydrangea sp.
Protocol #:
EPA Reg. # Production Site
C
FMC
Field Container
C
F6875 4SC
-
Field Container
C
Sulfentrazone +
FMC
Oxyfluorfen + Prodiamine Crop Safety
10-001
Research Target
Crop/Plant
Product
28986
Phytotoxicity
Barberry
Biathalon (OHP 052908)
-
Phytotoxicity
Berberis sp.
Oxyfluorfen + Prodiamine
OHP
Phytotoxicity
Dogwood
Biathalon (OHP 052908)
-
Phytotoxicity
Cornus sp.
Oxyfluorfen + Prodiamine
OHP
Phytotoxicity
Phytotoxicity
Cinquefoil, Shrubby
Potentilla fruticosa
Biathalon (OHP 052908)
Oxyfluorfen + Prodiamine
OHP
29053
ProjectTitle:
Protocol #:
Status
Field Container
PR#
29002
C
F6875 Crop Safety
PR#
ProjectTitle:
Field Container
Status
EPA Reg. # Production Site
Status
Field Container
C
Field Container
C
Field Container
C
Pendimethalin + Dimethenamid-p
10-001
PR#
Research Target
Crop/Plant
Product
EPA Reg. # Production Site
28181
Phytotoxicity
Phytotoxicity
False Cypress
Chamaecyparis sp.
Freehand G (BAS 659H G)
7969-273
Dimethenamid-p + pendimet BASF
Field Container
Status
C
Project Title:
Protocol #:
Weed Science Crop Safety
Narrative Summary (Results/Discussion)
Please keep text to one page if possible. Include summary of trial results and a brief discussion.
Results for multiple PRnumbers can be summarized together, but please list all PRNumbers in
the footer and in the summary data table.
Biathalon. Biathalon was tested on Berberis at all three locations, Cornus at Lincoln and Spring
Meadow, and Potentilla at Lincoln and Spring Meadow. Biathalon was not injurious at any rate
to any of the species tested. Biathalon is a premix of oxyfluorfen + prodiamine for grass and
broadleaf control, although it is a little weak on grass species. Biathalon looks to be an excellent
combination herbicide for the nursery market, at least for the woody shrubs in this trial.
Certainty. All species that received applications of Certainty were injured by at least the higher
rates of Certainty, which included Berberis at all three locations, Buddleia at Spring Meadow
and Zelenka, Clematis at Lincoln, and Viburnum at Spring Meadow. From previous research,
(data not shown), Certainty is injurious to a number of ornamental plants and also not very good
for weed control at the lowest rate (0.059 lbs ai/ac). Certainty is an acetolactate synthesis (ALS)
inhibitor; the herbicides in this family are very selective, yet all the herbicides in the ALS family
are very different from each other in what they injure or kill. ALS herbicides would be an option
for postemergence control of weeds; however because they are very selective, crop tolerance
would be species, and sometimes cultivar dependent.
FreeHand. FreeHand was applied to Ceonothus at Spring Meadow and Chamaecyparis at
Spring Meadow and Lincoln. FreeHand was not injurious to Chamaecyparis at any rate;
however, at high rates, it can be injurious to Ceonothus, although not beyond commercially
acceptable. From other trials (data not shown), it will cause stunting to Ceonothus, especially if
under stress. In this study, growth index does indicate a slight stunting injury to Ceonothus from
applications of FreeHand. FreeHand is already on the market for ornamentals and has a wide
label, but there should be caution to not apply too high a rate.
F6875. F6875 was applied as either a liquid or as a granular, both at the same rates (of ai/ac).
Coreopsis at both Lincoln and Zelenka were not injured by the granular formulation of F6875.
The liquid formulation of F6875 was applied to Hydrangea and Echinacea at Lincoln and
Zelenka; both species were injured at some point by F6875. The first application was much
more injurious than the first, which is indicated by visual ratings on the Hydrangea, especially at
Lincoln. It seems that the granular formulation of F6875 is more conducive to the ornamental
market, at least in containerized material.
Tower. Tower was only applied to the Hemerocallis at Lincoln, and it causes slight stunting,
especially at the highest rate. Tower is currently labeled for ornamentals and has good activity
on grasses and can suppress yellow nutsedge. Tower can cause burning when applied shortly
after bud break, which is indicated by the label, so caution should be used. From this study, it
could be used on Hemerocallis.
Mesotrione. Euonymus was injured at all rates by mesotrione at the Spring Meadow site.
Although mesotrione has excellent weed control, it can cause severe bleaching (i.e. whitening) to
susceptible species. Deciduous trees seem to be the most tolerant of mesotrione based on data
from The Ohio State University (2008 Yearly Research Summary Report) and mesotrione should
be studied for field use in deciduous trees.
SedgeHammer. SedgeHammer was applied only to Buxus ‘Green mountain’ in the field at
Zelenka Nursery (Table 2). At first, SedgeHammer appeared to not injure Buxus; however, by
the second application, it was apparent the SedgeHammer caused yellowing and some stunting of
the Buxus. SedgeHammer has caused injury to Buxus in containers (2008 Yearly Research
Summary Reports), which this trial confirms. It doesn’t matter if Buxus grown in containers or
in the field, SedgeHammer should not be applied, at least while actively growing.
IR-4 Ornamental Horticulture Program
Research Report Form
Results Table
Please insert results table here. Include PRnumbers for each treatment if multiple PRnumbers
are included in this summary. Please include statistics.
Berberis 'Crimson pygmy'
Treatment
Biathalon 2.75 lb ai/ac
Biathalon 5.5 lb ai/ac
z
1 WA1T
x
0.3 ns
4 WA1T
0.3
1 WA2T
0.3
2 WA2T
0.1
4 WA2T
0.3
PR #
28986
28986
28986
y
GI
20.4
ns
5.9
0.8
0.6
1.3
0.7
21.0
Biathalon 11 lb ai/ac
0.3 ns
Certainty 0.059 lb
0.0 ns
ai/ac
Certainty 0.117 lb
0.2 ns
ai/ac
Certainty 0.234 lb
0.0 ns
ai/ac
Untreated
0.3
chamaecyparis 'Golden spangel'
Treatment
1 WA1T
6.3
0.4
1.1
0.3
1.2
19.9
4.9
3.3
*
4.5
*
7.8
*
5.5
**
0.0
**
28555
3.4
*
4.5
*
7.8
*
6.1
**
5.0
**
28555
4.8
3.9
*
5.4
*
7.7
*
6.7
**
0.0
**
28555
3.4
0.3
FreeHand 2.65 lb
ai/ac
FreeHand 5.3 lb ai/ac
FreeHand 10.6 lb
ai/ac
Untreated
Coreopsis 'Crème
brule'
Treatment
F6875 0.3G 0.375 lb
ai/ac
F6875 0.3G 0.75 lb
ai/ac
F6875 0.3G 1.5 lb
ai/ac
Untreated
Cornus 'Baileyi'
Treatment
Biathalon 2.75 lb ai/ac
Biathalon 5.5 lb ai/ac
0.9
Lincoln
2 WA1T
5.1
ns
1.1
2.2
ns
1.7
1.8
ns
2.1
1 WA1T
*
Lincoln
2 WA1T
1.7
0.3
4 WA1T
0.4
1 WA2T
0.2
2 WA2T
18.6
4 WA2T
PR #
GI
1.1
ns
0.4
ns
0.0
ns
0
ns
4.8
ns
1.3
ns
0.2
ns
0.5
ns
0
ns
4.9
ns
0.3
1.0
ns
0.2
ns
0.0
ns
0
ns
6.8
ns
0.3
1.0
**
Lincoln
2 WA1T
0.3
4 WA1T
0.3
1 WA2T
0
2 WA2T
28181
28181
28181
4.4
4 WA2T
PR #
GI
0.0
ns
0.0
ns
0.0
0.2
ns
0.0
ns
0.3
ns
17.1
ns
26220
0.3
ns
0.0
ns
0.0
0.9
ns
0.0
ns
0.4
ns
23.0
ns
26220
2.2
ns
0.0
ns
1.0
0.9
ns
0.0
ns
0.8
ns
19.0
ns
26220
0.1
0.0
z
1 WA1T
x
0.2 ns
0.0
Biathalon 11 lb ai/ac
0.1
Untreated
0.0
8/18/06 clp
6.5
w
ns
ns
0.3
Lincoln
2 WA1T
1.9 ns
4.1
4.0
2.9
*
ns
ns
0.3
4 WA1T
0.2
0.2
0.4
0.0
w
*
0.0
1 WA2T
0.0 ns
1.1
2 WA2T
0.0 ns
13.0
4 WA2T
0.0 ns
y
GI
ns
0.3
ns
0.0
ns
0.0
ns
ns
0.3
ns
0.0
ns
0.0
ns
ns
0.4
0.0
0.0
PR #
29002
29002
29002
IR-4 Ornamental Horticulture Program
Research Report Form
Echinacea purpurea 'White satin'
Treatment
1 WA1T
F6875 4SC 0.375 lb
7.4 **
ai/ac
F6875 4SC 0.75 lb
8.3 **
ai/ac
F6875 4SC 1.5 lb
8.7 **
ai/ac
Untreated
1.1
Hemerocallis 'Strawberry candy'
Treatment
Tower 0.97 lb ai/ac
1 WA1T
0.8 ns
Lincoln
2 WA1T
2 WA2T
4 WA2T
PR #
GI
**
8.8
**
8.8
**
9.7
**
8.0
**
-6.6
*
27678
9.3
**
9.2
**
9.7
**
10.0
**
9.7
**
-7.8
**
27678
9.3
**
9.3
**
10.0
**
10.0
**
10.0
**
-4.4
*
27678
1.3
2.1
Lincoln
2 WA1T
3.7
0.6
ns
3.1
Tower 3.88 lb ai/ac
1.1
ns
4.0
Untreated
0.7
Hydrangea macrophylla 'All
summer beauty'
z
Treatment
1 WA1T
F6875 4SC 0.375 lb
x
w
3.9 **
ai/ac
F6875 4SC 0.75 lb
3.4 **
ai/ac
F6875 4SC 1.5 lb
4.2 **
ai/ac
Untreated
0.6
1.2
Treatment
Biathalon 2.75 lb ai/ac
1 WA2T
8.9
Tower 1.94 lb ai/ac
Potentilla fruticosa 'Pink beauty'
4 WA1T
*
0.6
4 WA1T
0.1 ns
1 WA2T
0.7
ns
1.2
0.1
ns
0.9
3.6
0.0
1.0
4 WA1T
*
1 WA2T
4.4
2 WA2T
2.5
0.1
0.3
Lincoln
2 WA1T
5.4
2.9
**
5.8
4 WA2T
1.3 ns
1.4
ns
-2.8
1.6
ns
-0.7
0.6
2 WA2T
PR #
29168
29168
29168
GI
2.2
6.4
4 WA2T
GI
PR #
y
5.8
**
2.7
**
0.5
0.0
ns
0.0
ns
ns
27679
6.2
**
3.0
**
0.8
0.3
ns
0.0
ns
ns
27679
6.9
**
3.8
**
1.6
0.0
ns
0.0
ns
ns
27679
4 WA2T
0.0 ns
GI
ns
PR #
29053
29053
29053
1.5
0.6
**
0.2
0.0
0.0
Lincoln
1 WA1T
0.0 ns
2 WA1T
0.2
Biathalon 5.5 lb ai/ac
0.0
ns
0.5
Biathalon 11 lb ai/ac
0.0
ns
1.0
Untreated
0.0
0.0
*
4 WA1T
0.2 ns
1 WA2T
0.1 ns
2 WA2T
0.0 ns
0.6
ns
0.4
ns
0.0
ns
0.2
ns
0.1
ns
0.0
ns
0.2
0.1
0.0
Researcher(s): H. Mathers
PRNumber(s):28986, 28181, 26220, 29002, 27678, 29168, 27679, 29053
0.0
ns
ns
0.0
ns
ns
0.0
1
IR-4 Ornamental Horticulture Program
Research Report Form
Materials & Methods/Recordkeeping
Please fill out the information below or attach a separate document with comparable
information.
Crop History
Crop Cultivar/Variety:
Date of Seeding:
Date of Emergence:
Date of Transplanting:
Berberis thunbergii 'Crimson pygmy', Chamaecyparis 'Golden
spangel', Clematis 'Midnight showers', Coreopsis 'Crème
brule', Cornus ‘Baileyi’, Echinacea purpurea 'White satin',
Hemerocallis 'Strawberry candy', Hydrangea macrophylla 'All
summer beauty', and Potentilla fruticosa 'Pink beauty' were
selected.
Lincoln-pb, rice hulls, wood fibers, peat (exact %’s not
available)
3 gallon trade size - Berberis thunbergii 'Crimson pygmy',
Chamaecyparis 'Golden spangel', Cornus ‘Baileyi’, Echinacea
purpurea 'White satin', Hemerocallis 'Strawberry candy',
Hydrangea macrophylla 'All summer beauty', and Potentilla
fruticosa 'Pink beauty'; 1 gallon trade size - Clematis 'Midnight
showers', Coreopsis 'Crème brule'
Potting Mix:
Pot size & spacing:
Row spacing:
Product(s) applied prior to start of experiment:
Product
Rate
Application
Type
Date of
Application
Crop Growth
Stage
Application
Volume
22-4-8, 8-9 mo.
Add more rows as needed.
Experiment Information
Completely randomized design
Experimental Design:
4 reps with 3 subsamples/rep
Number of Reps:
Materials & Methods:
Insert materials & methods here only if information is not requested elsewhere.
Application Equipment: shaker jar or CO2 sprayer
Product(s) applied during experiment (including treatments, fertilizers, etc):
Product
Rate(s)
Application
Date of
Crop Growth
Application
Researcher(s): H. Mathers
PRNumber(s):28986, 28181, 26220, 29002, 27678, 29168, 27679, 29053
2
IR-4 Ornamental Horticulture Program
Research Report Form
Certainty
FreeHand
F6875 4SC
Biathalon
F6875 0.3G
Tower
0.059, 0.117,
and 0.234 lb
ai/ac
2.65, 5.3,
10.6 lb ai/ac
0.375, 0.75,
1.5 lb ai/ac
2.75, 5.5,
11.0 lb ai/ac
0.375, 0.75,
1.5 lb ai/ac
0.97, 1.94,
3.88 lb ai/ac
Type
Application
Sprayable
See below
Stage
Volume
30 gal/ac
Granular
Sprayable
30 gal/ac
Granular
Granular
Sprayable
30 gal/ac
Add more rows as needed.
Researcher(s): H. Mathers
PRNumber(s):28986, 28181, 26220, 29002, 27678, 29168, 27679, 29053
3
IR-4 Ornamental Horticulture Program
Research Report Form
Environmental conditions during the experiment:
Insert temperature, precipitation, relative humidity and other pertinent environmental
conditions. Or send separate file with this information.
Trials were set up on April 29, 2010 with the weather generally overcast and temperatures
ranging from about 46 °F at time of start to 61 °F at the end of the day. Two applications of each
of the herbicides were applied, with the second application on June 24, 2010. The weather was
warm, approximately 75-88 °F during the course of applications with some dew present in the
morning (Lincoln was the site location at time of dew). Immediately after each application, ½
acre-inch irrigation was applied.
Researcher(s): H. Mathers
PRNumber(s):28986, 28181, 26220, 29002, 27678, 29168, 27679, 29053
4
IR-4 Ornamental Horticulture Program
Research Report Form
Data Collected
Please describe data collected and scoring system. Also include the dates data were collected.
Phytotoxicity evaluations were performed at 1 WA1T (week after first treatment), 2 WA1T, 4
WA1T, 1 WA2T (week after second treatment), 2 WA2T, and 4 WA2T. Visual ratings were
performed on a scale of 0-10 with 0 being no phytotoxicity, 10 being dead, and ≤3 commercially
acceptable. Growth was also assessed by measuring heights and widths at the first and last
evaluations.
Raw Data
Insert raw data below or send separate file containing raw data.
Researcher(s): H. Mathers
PRNumber(s):28986, 28181, 26220, 29002, 27678, 29168, 27679, 29053
5