HFL14HydrangeaPhyto
Objective: to compare three strategies to avoid or mitigate preemergence herbicide injury to container-grown
Hydrangea macrophylla.
Executive summary:
Hydrangea macrophylla is one of the most popular landscape shrubs. In response to strong market demand,
container nurseries have increased production of many varieties of Hydrangea macrophylla. However, weed
management in hydrangea production is challenging because few herbicides are labeled for use on this species,
and those which are labeled have been shown to cause crop injury when granules adhere to the foliage. In this
experiment three methods to avoid or mitigate that injury were compared: (1) dislodge herbicide granules from
the growing points by shaking plants before irrigation is applied; (2) spray-apply Tower herbicide followed
immediately by irrigation; and (3) accept that bud damage would occur, but prune the damaged tissues to
encourage regrowth. Results confirmed that severe crop damage results when granules are not manually
removed before irrigation. Shaking plants to dislodge herbicide granules before irrigation prevented tip
necrosis from Freehand and Snapshot treatments. Plants receiving this treatment were visually
indistinguishable from the non-treated plants, but plant growth (as measured by canopy volume and fresh
weight) was reduced by 10% to 15%. Despite this reduced growth, plants in these treatments were considered
“marketable” based on visual quality assessments. Spray applications of Tower herbicide also caused about 10
to 15% reduction in overall plant growth with no tip necrosis. Shaking plants treated with OH2 reduced but did
not eliminate tissue necrosis. Pruning plants to remove herbicide-damaged shoots did not promote plant quality
or growth. In fact, regrowth of herbicide-damaged plants was significantly less compared to non-treated plants
that were pruned at the same time. These results confirm that under the best of circumstances, growers should
expect 10 to 15% growth reduction following herbicide treatments. Growers will need to understand and accept
that when preemergence herbicides are applied to hydrangea it is likely that plant growth will be reduced.
Acute injury can be avoided by following these guidelines:
1. Be sure the foliage is dry before application;
2. Utilize “non-burning” herbicides (such as the Freehand or Snapshot used in this trial); and
3. Physically remove granules from the growing points before irrigation is applied.
Spray-applied herbicides, such as Tower, may also be an alternative. The other alternative is to rely on hand
weeding and/or mulches for weed control in Hydrangea macrophylla production.
Effects of herbicides and removal treatments on % marketable plants
~ 10 weeks after treatment
100
% marketable plants
90
80
70
60
Shaken
50
Irrigated
40
Pruned
30
20
10
0
Non-treated
Freehand
Snapshot
OH2
Tower
Title:
Location:
Substrate:
HFL14HydrangeaPhyto
Experiment #:
Hydrangea Herbicide Injury Avoidance Comparisons
Horticultural Field Laboratory, N. C. State University, Raleigh in a hoop house covered with
50% shade cloth.
Parker Bark Company "Nursery Mix" minus minor elements; (hammer-milled pine bark
amended with lime); top-dressed with Osmocote Pro 17-5-11 slow release fertilizer with
minor elements @ 1 TBSP/pot
CO2 pressurized 2L bottle sprayer and hand held shaker
Application Equip.
2-8004 XR
PSI: 36.5
Speed: 3 mph
#/type of nozzle:
30
GPA:
RCB
4
Experimental Design:
Replicates:
Plants/species/plot:
13
3
Treatments:
4’ x 4'
2013
Plot size:
Potting Date:
APPLICATION INFORMATION
DATES
Calibration: ml/15 sec (target 284)
TREATMENTS APPLIED
SOIL MOISTURE
SOIL CONDITION
TEMPERATURES (°F)
air
soil surface / 2 in / 6 in
SKY:
WIND SPEED & DIRECTION
Date of first rain (R) or irrig. (I)
Amount (in.) R or I
8/15/2014
282
12,13
8/15/2014
NA
1-11
moist
moist
outside of shade house
88
84/78/85
40% cloud cover
0-1 mph,W
8/15/2014 I
~0.4"
inside shade house
80
80/79/78
50% shade cloth
0-1 mph,NW
8/15/2014 I
~0.4"
CROP Status:
Hydrangea macrophylla 'Endless Summer'
10-12" tall, w/many new shoots flushing; full
canopy cover of pot; very uniform in size
COMMENTS OR CORRECTIONS: all plants potted to 4-L pots in spring 2014. To encourage branching and
new growth, plants were pruned to 4-6" in height 18 days prior to treatment. All treatments were applied on
August 15th. On August 18th, treatments that included pruning were clipped with hand-held clippers to remove
the damaged tips. This required pruning plants to about 6 - 8 inches in height.
Hydrangea macrophylla is one of the most popular container-grown nursery crops. The species is relatively
easily propagated and produced in container culture but is injured by most preemergence herbicides. Of the 25
preemergence herbicides labeled for use in container nursery crops, only 7 are labeled for use on Hydrangea
macrophylla, including Freehand, OH2, Snapshot TG, Pennant Magnum, Regalkade G, Regal OO, and Surflan.
However, grower experiences and research had demonstrated that each of these herbicides may injure
Hydrangea macrophylla in container production. Below is a chart from our 2012 experiment illustrating that
several of these herbicides cause significant foliar necrosis or stunting of Hydrangea macrophylla ‘Endless
Summer’ when applied at labeled rates.
Figure 1. Preemergence herbicide injury to Hydrangea macrophylla 3 and 10 weeks after treatment. It should
be noted that each of these herbicides is labeled for use on hydrangea.
PRE herbicide injury to Hydrangea macrophylla
2012 Data; NC State University
% Injury / Stunting
100
3 WAT
80
10 WAT
60
40
20
0
Hand Weeded
Freehand
Tower
Pendulum
Snapshot TG
.
The injury generally consisted of necrosis of growing points where granules were “trapped” by the leaves or
developing bud. See the photos below. Subsequent re-growth is also often delayed or stunted.
Herbicide alternatives including various mulching materials have been investigated and can be effective, but
these products often cost four to five times as much as an effective preemergence herbicide program.
Consequently, weed management options for hydrangea production is routinely cited by growers as a high
priority need. Since it appears that nearly all preemergence herbicides labeled for nursery crop production have
the potential to injure this species, it is critical that we investigate methods to reduce the frequency and severity
of injury following herbicide treatment.
The crop injury observed appears to result primarily from “trapping” of granular treatments in the growing
points, resulting in tip necrosis. In this research project we compared three strategies to mitigate this type of
crop injury. Two strategies for removing granules from the growing points were irrigation immediately after
treatment and manual shaking of the plants to dislodge granules. A third strategy was to accept that bud
damage would occur, but prune the affected stems to remove the damaged tissues and encourage regrowth.
This last strategy assumes that hydrangeas in container production require periodic pruning to stimulate
branching.
METHODS
Hydrangea macrophylla ‘Endless Summer’ cuttings were rooted into cell trays. After rooting, plants were
potted to 1-Gallon (classic 400) plastic pots using a pine bark-based substrate amended with recommended rates
of lime and top dressed with slow-release nursery fertilizer. After potting, plants were allowed to grow to about
8 to 10 inches in height then were pruned to stimulate branching. This was done to increase the number of
growing points on each plant that would be susceptible to herbicide damage. When plants had about 4 inches of
new growth, labeled preemergence herbicides, including Freehand G, Snapshot TG, OH2, and Tower, were
applied at labeled doses. Three treatment strategies were used to remove granular herbicides or mitigate the
damage.
1. Physically shake plants to dislodge granules before irrigation;
2. Utilize a spray-applied herbicide, Tower, then irrigate immediately after treatment;
3. Treat, irrigate, then 3 days later (when it is possible to see which growing points were damaged) prune
the injured stems.
These treatments were compared to non-treated plants as well as plants receiving overhead irrigation after
treatment. Herbicides were applied to dry foliage. Granular treatments included Freehand G, Snapshot TG, and
Everris OH2, each applied at the manufacturer’s maximum recommended dose. Herbicides were applied in
pre-weighed aliquots using a hand-held shaker jar. The one spray treatment, Tower, was applied at the high
labeled dose using a CO2-pressurized sprayer calibrated to deliver 30 GPA. Herbicide treatments were applied
on August 15, 2014. Plants were maintained under 50% shade cloth and received about 0.5 inches of overhead
irrigation each day applied in 3 equal increments: morning, mid-day and late afternoon.
Plant injury evaluations. Three days after herbicide application and before pruning, injury to the growing
points was observed. Injury could be categorized into 4 points on a subjective bud injury rating scale (see
images below): 0 = no discoloration; 1 = slight chlorosis; 2 = distinct chlorosis of new growth with some tissue
necrosis; 3 = new growth necrotic (may or may not be accompanied by chlorosis); and 4 = necrotic growing
points with necrotic symptoms spreading to adjacent leaves or stems. Additionally, an evaluation of the % of
the leaf buds on the plant with necrosis (approximate # buds necrotic divided by total buds on the plant,
multiplied by 100) was made.
0
2
1
3
4
Beginning 4 weeks after treatment, plant injury was evaluated on a 0 to 10 scale where 0 = no injury (visually
equivalent to the non-treated) and 10 = dead. The evaluation scale is described below. To convert these data
to % injury, multiply the means by 10.
Value
0
1 to 2
3 to 4
5
6 to 9
10
Plant Symptoms
No visual injury present.
Minimal injury to desirable plant. Less than 10% of the plant leaf surface area
showing chlorosis, necrosis or other symptoms. Or 10 to 20% reduction in growth.
Greater than 20% discoloration or necrosis; generally associated with some
stunting. Or 30 to 40% reduction in above-ground biomass.
About 50% reduction in above-ground biomass; may also be stunting, necrosis or
a combination thereof.
A majority of the plant is necrotic or otherwise visibly damaged.
Plant appears dead. No signs of regrowth.
Plant quality and growth evaluations and measurements. Plant quality was visually evaluated using a
subjective 0 to 10 scale where 10 = the best plants in the trial. In this “treatment-blind” evaluation, each plant
(sub-sample) within a plot was assigned a separate number, then sub-sample data were averaged. Plants
receiving a rating > 8 were considered “marketable”. To be deemed “marketable” plants had to be well formed,
with lush growth and lack obvious signs of foliar damage. This was a subjective determination by the evaluator
(Dr. Neal). From these data, an estimate of % marketable plants was calculated.
Plant height and width in two directions were measured (to the nearest 0.5 inches) approximately 4, 7, and 10
weeks after treatment. Plant canopy volume was calculated using the formula for one-half of a sphere: canopy
volume = 0.5(4/3πr3); where r = average of the height and one half of the width. At the termination of the
experiment, about 10 weeks after treatment, the above-ground fresh weight of each plant was recorded.
Additionally, visual evaluations of root quality were conducted using a 5 point scale (see image below): 0 = no
roots; 1 = very few roots emerging from the original root ball; 2 = weakly rooted and root ball falls apart when
handled; 3 = about half of the substrate exploited by white healthy roots; 4 = substrate fully exploited by roots
but root ball not firm; 5= root ball firm when squeezed and fully exploited by healthy roots. Note: there were
no root balls deemed to be a 0 or 1 in this experiment.
RESULTS
All granular herbicides caused chlorosis and necrosis of the growing points when granules were not physically
removed before irrigation. Injury was observed as soon as 1 day after treatment. When granules were
removed by manually shaking the plants, no injury was observed from Freehand or Snapshot treatments. OH2
injury was dramatically reduced when granules were removed by shaking, but plants still exhibited foliar
necrosis.
Growing points of hydrangea plants 1 day after herbicide treatment.
No necrosis was observed on plants treated with Tower.
Tower, irrigated
Non-treated
Bud necrosis in plants receiving overhead irrigation only vs. granules shaken off 1 day after herbicide treatment.
OH2 treatments resulted in injury. Injury was less severe when granules were shaken off by hand.
OH2, shaken off
OH2, irrigated only
In contrast, physically shaking the plants prevented bud damage from Freehand and Snapshot.
Freehand, shaken off
Snapshot, shaken off
Freehand, irrigated only
Snapshot, irrigated only
Three days after herbicide application, plants were pruned to remove the damaged growing points.
Before pruning
After pruning
About one month after herbicide treatment and pruning, plant quality evaluations were initiated. Plants treated
with granular herbicides and receiving irrigation as the only removal technique were of lower quality – smaller
and necrotic tissues still visible compared to plants which were shaken to dislodge granules before irrigation.
When granules were shaken off, plants treated with Freehand or Snapshot were visually equivalent to the nontreated. Plants treated with OH2 were of lower quality despite having good regrowth; necrotic tissues were still
visible on plants 10 weeks after treatment, resulting in a lower quality rating. Pruned plants were smaller in size
(and thus lower in quality). Non-treated plants that were pruned resumed normal growth sooner than pruned
herbicide-treated plants. A surprising observation was that regrowth following pruning was inhibited by prior
herbicide treatments.
Effects of preemergence herbicides and herbicide removal strategies on Hydrangea macrophylla ‘Endless
Summer’ plant quality. Evaluations were on a 0 to 10 scale with 10 being the best plant quality in the test.
Herbicide(s)
Formulation
na
na
Dose
lbai/A
0
0
Removal
method
Irrigation
Pruned
9/17
9.9
7.3
a
b
9.8
7.6
a
c
9.8
8.0
a
cd
9.9
8.3
a
cd
dimethenamid-p
+ pendimethalin
1.75 GR
3.5
Irrigation
Shaken
Pruned
5.9
9.3
5.3
cd
a
de
6.0
9.3
6.3
de
ab
d
6.5
9.2
6.5
e
ab
e
6.6
9.4
6.7
e
ab
e
isoxaben +
trifluralin
2.25 GR
5
Irrigation
Shaken
Pruned
5.8
9.3
5.0
d
a
e
5.9
9.0
5.8
de
b
de
6.1
9.2
6.0
e
ab
ef
6.2
9.4
6.2
ef
ab
ef
oxyfluorfen +
pendimethalin
3G
3
Irrigation
Shaken
Pruned
5.1
7.2
4.1
e
b
f
5.3
7.4
5.0
ef
c
f
6.0
8.7
5.4
ef
bc
f
6.2
8.7
5.4
ef
bcd
f
dimethenamid-p
6 EC
1.5
Irrigation
Shaken
Pruned
9.3
na
6.6
a
8.9
na
7.2
b
9.3
na
7.9
ab
9.2
abc
d
7.8
d
None
None
9/30
bc
10/9
c
10/23
Means within a column followed by the same letter are not significantly different (LSD, p = 0.05).
plant quality (0-10)
Effects of herbicides and removal treatments on overall plant quality
~ 10 weeks after treatment
10
9
8
7
6
5
4
3
2
1
0
Shaken
Irrigated
Pruned
Non-treated
Freehand
Snapshot
OH2
Tower
Freehand-treated and non-treated plants approximately 10 weeks after treatment.
L to R:
non-treated
Freehand
shaken
Freehand
irrigated
Freehand
pruned
non-treated
pruned
Plant quality ratings included plant size, color, and presence or absence of injured tissues. The photos above
illustrate OH2-treated plants that exhibit significant healthy growth and relatively good size, but the necrotic
tissues damaged by herbicide treatment 10 weeks prior are still present and visible. Such a plant would have
received a score of 7 on the quality scale and would have been classified as “not marketable” in the subjective
classification.
When individual plants were scored as “marketable” or “not marketable”, the treatment effects are clear. At the
final evaluation, 10 weeks after treatment, Freehand- and Snapshot-treated plants which were shaken to remove
granules were 100% marketable. Plants receiving irrigation to remove herbicide granules were less than 30%
marketable. Pruning plants delayed overall marketability with about 80% of the non-treated plants being
classified as “marketable” 10 weeks after pruning. In contrast, less than 10% of the herbicide-damaged plants
which were pruned after treatment were considered marketable. These results soundly rejected our hypothesis
that herbicide-damaged plants could be pruned to recover normal growth.
Effects of herbicides and removal treatments on % marketable
plants ~ 10 weeks after treatment
% marketable plants
100
80
60
Shaken
40
Irrigated
Pruned
20
0
Non-treated
Freehand
Snapshot
OH2
Tower
Plant canopy volumes were estimated using measurements of plant heights and widths. These data were highly
correlated (R = 0.97) with plant quality evaluations. Plant volume increased dramatically in the first 4 to 6
weeks then slowed. Lack of growth in the last month may be related to shorter days and cooler nights in the
month of October. Thus, had the trial been initiated earlier in the season it is possible that the pruned treatments
would have continued growing and mitigated some of the growth inhibition observed in this trial. About 10
weeks after treatment, plants were cut off at ground level and weighed. Fresh weights were highly correlated
with plant canopy volume and final plant quality evaluations.
Analysis of plant canopy volume and fresh weight data identified treatment differences that were not apparent in
visual evaluations. These data showed that all herbicide treatments reduced growth of hydrangea. The most
severe reductions in growth resulted when granular herbicides were not physically removed from the growing
points before irrigation. Shaking granules from the plants before irrigation mitigated herbicide damage, but
plants were still about 10 to 15% smaller than the non-treated plants. Plants treated with the spray application
of Tower then irrigated were similar in size to the plants treated with Freehand and Snapshot with granules
removed before irrigation. Root ratings closely paralleled canopy growth and quality evaluations and
measurements, suggesting that damage to the foliage reduced root development.
fresh weight (g)
Comparison of 3 herbicide removal methods on hydrangea
fresh weight
1000
900
800
700
600
500
400
300
200
100
0
a
b
c
d
Nontreated
Shaken
Irrigated
Pruned
Comparison of preemergence herbicide injury mitigation methods on hydrangea fresh weights, measured
10 weeks after treatment. Data are averaged across herbicides.
Pruning as a method to remove herbicide damaged tissues -- effects
on plant regrowth (plant fresh weights)
800
a
700
b
fresh weight (g)
600
bc
500
c
400
d
300
200
100
0
Nontreated
Freehand
Snapshot
OH2
Tower
Effects of preemergence herbicides on plant regrowth after pruning (as measured by plant fresh weight,
10 weeks after treatment).
Conclusions:
1. OH2 caused more injury than Freehand, Snapshot TG or Tower. This suggests that the use of PPO
inhibitor herbicides, such as oxyfluorfen, have a greater likelihood of foliar damage to hydrangea than
herbicides with “non-burning” modes of action.
2. Normal overhead irrigation is insufficient to remove granular herbicides from the foliage and growing
points. Bud necrosis was observed in hydrangea treated with all granular herbicides tested.
3. Manually shaking plants to dislodge herbicide granules eliminated tip burn and foliar necrosis.
4. Tower herbicide applications followed immediately by overhead irrigation caused only very slight and
temporary chlorosis of the growing points.
5. Plants treated with Snapshot or Freehand and shaken to remove granules or plants treated with Tower
were visually similar to the non-treated plants, and all were considered marketable. However, plant
canopy volumes and fresh weights were reduced by 10 to 15% compared to the non-treated.
Effects of preemergence herbicides and herbicide removal strategies on Hydrangea macrophylla ‘Endless Summer’ – plant volumes (in3)
and final above-ground fresh weights (g).
Herbicide(s)
FormDose
Removal
Plant
Plant
Plant
Fresh
ulation
lbai/A
method
Volume
Volume
Volume
weight
9/19
10/10
10/23
10/23
None
na
0
na
2170.5 a
6968.8 a
5272.8 a
930.8 a
None
na
0
Pruned
1057.6 d
4152.0 d
3399.8 de
736.8 b
dimethenamid-p
+ pendimethalin
(Freehand)
1.75 GR
3.5
Irrigation
Shaken
Pruned
727.4 e
1755.3 b
591.1 ef
2890.8 ef
5835.5 b
2224.5 fg
2418.8 f
4732.0 b
2133.8 fg
624.5 c
811.8 b
542.0 cd
isoxaben +
trifluralin
(Snapshot)
2.25 GR
5
Irrigation
Shaken
Pruned
737.4 e
1594.6 bc
464.9 fg
2432.3 fg
4928.3 c
2043.3 gh
2247.8 fg
3905.0 cd
1741.5 g
620.0 c
743.0 b
451.5 d
oxyfluorfen +
pendimethalin
(OH2)
3G
3
Irrigation
Shaken
Pruned
656.4 e
1560.4 c
346.7 g
2369.8 fg
5470.0 bc
1446.3 h
2202.5 fg
4149.5 c
1182.3 h
521.8 d
816.8 b
294.5 e
dimethenamid-p
(Tower)
6 EC
1.5
Irrigation
Pruned
1679.3 bc
952.6 d
5303.3 bc
3538.0 de
4220.5 bc
3078.0 e
832.8 b
620.0 c
Plant canopy volume was calculated using the formula for one-half of a sphere: canopy volume = 0.5(4/3πr3), where r = the average of the height and
one half of the width measured in 2 directions (in inches).
Means within a column followed by the same letter are not significantly different (LSD, p = 0.05).
Appendix: ARM Data Summaries
Hydrangea herbicide injury avoidance comparisons
Trial ID: HFL14HydrangeaPhyto
Location: HFL shade
Crop Name
Crop Variety
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
4 Freehand
Shaken after treatment
5 Freehand
Pruned after irrigation
6 Snapshot TG
Irrigated after treatment
7 Snapshot TG
Shaken after treatment
8 Snapshot TG
Pruned after irrigation
9 OH2
Irrigated after treatment
10 OH2
Shaken after treatment
11 OH2
Pruned after irrigation
12 Tower
Irrigated after treatment
13 Tower
Pruned after irrigation
LSD (P=.05)
Standard Deviation
CV
Replicate F
Replicate Prob(F)
Treatment F
Treatment Prob(F)
Protocol ID: HFL12HydrangeaPhyto
Study Director: Neal
Investigator: Joseph C. Neal, Ph.D.
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
Bud
Bud
Plant
Plant
08/18/14
08/18/14
08/18/14
08/29/14
BudInjury
PHYNEC
PHYGEN
PHYGEN
0-4
%
0-10
0-10
3
3
3
3
3
3
14
14
3 DA-A
3 DA-A
3 DA-A
14 DA-A
Form Form
Rate
Conc Type Rate Unit
1
2
3
7
0.0 d
0.0 d
0.0 d
0.0 d
0.5 cd
0.0 d
0.0 d
0.0 d
1.75 GR
200 lb/a
2.0 b
0.0 d
1.3 c
3.3 b
Hydrangea m>
Endless Sum>
Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum>
09/09/14
PHYGEN
0-10
25
25
25 DA-A
09/17/14
PHYGEN
0-10
33
33
33 DA-A
09/30/14
PHYGEN
0-10
46
46
46 DA-A
10/09/14
PHYGEN
0-10
55
55
55 DA-A
10
0.0 g
0.0 g
3.8 b
13
0.0 f
0.0 f
4.3 bc
21
0.0 e
0.0 e
4.8 ab
24
0.0 e
0.0 e
4.0 b
1.75 GR
200 lb/a
0.0 d
0.0 d
0.3 d
0.8 d
0.9 f
0.5 f
0.5 e
0.8 de
1.75 GR
200 lb/a
1.8 b
2.5 d
1.8 bc
1.8 c
3.0 cd
3.3 de
3.0 c
2.0 c
2.25 GR
200 lb/a
2.0 b
3.8 d
2.0 b
3.0 b
3.5 bc
4.3 bc
4.3 b
3.8 b
2.25 GR
200 lb/a
0.5 cd
0.0 d
0.3 d
0.8 d
1.0 f
0.5 f
0.5 e
0.8 de
2.25 GR
200 lb/a
1.8 b
15.0 c
1.8 bc
2.0 c
2.8 de
4.0 cd
4.3 b
3.3 b
3 GR
100 lb/a
3.0 a
95.0 a
3.8 a
4.5 a
4.8 a
5.0 ab
4.8 ab
5.0 a
3 GR
100 lb/a
1.8 b
23.8 b
1.8 bc
3.0 b
2.3 e
3.0 e
1.8 d
1.5 cd
3 GR
100 lb/a
3.0 a
90.0 a
3.8 a
4.8 a
4.5 a
5.3 a
5.3 a
3.8 b
6 EC
32 fl oz/a
0.8 c
0.0 d
0.3 d
0.8 d
0.6 fg
0.5 f
0.5 e
0.8 de
6 EC
32 fl oz/a
0.0 d
0.0 d
0.0 d
0.5 d
0.8 f
0.8 f
0.3 e
0.0 e
0.52
0.37
28.06
5.57
3.90
22.03
0.69
0.48
37.46
0.94
0.65
34.04
0.72
0.51
23.76
0.77
0.54
22.34
0.97
0.68
29.72
0.82
0.57
29.29
0.381
0.7673
34.714
0.0001
1.434
0.2489
304.107
0.0001
0.523
0.6693
30.743
0.0001
0.838
0.4820
25.130
0.0001
1.121
0.3532
44.364
0.0001
0.422
0.7382
58.289
0.0001
1.150
0.3421
38.626
0.0001
1.631
0.1993
37.971
0.0001
Means followed by same letter do not significantly differ (P=.05, LSD)
11/21/14 (HFL14HydrangeaPhyto)
AOV Means Table Page 3 of 15
North Carolina State University
Crop Name
Crop Variety
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
1 Nontreated
2 Nontreated Pruned
3 Freehand
1.75 GR
200 lb/a
Irrigated after treatment
4 Freehand
1.75 GR
200 lb/a
Shaken after treatment
5 Freehand
1.75 GR
200 lb/a
Pruned after irrigation
6 Snapshot TG
2.25 GR
200 lb/a
Irrigated after treatment
7 Snapshot TG
2.25 GR
200 lb/a
Shaken after treatment
8 Snapshot TG
2.25 GR
200 lb/a
Pruned after irrigation
9 OH2
3 GR
100 lb/a
Irrigated after treatment
10 OH2
3 GR
100 lb/a
Shaken after treatment
11 OH2
3 GR
100 lb/a
Pruned after irrigation
12 Tower
6 EC
32 fl oz/a
Irrigated after treatment
13 Tower
6 EC
32 fl oz/a
Pruned after irrigation
LSD (P=.05)
Standard Deviation
CV
Replicate F
Replicate Prob(F)
Treatment F
Treatment Prob(F)
Hydrangea m>
Endless Sum>
Hydrangea m>
Endless Sum>
Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum>
Hydrangea m>
Endless Sum>
Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum>
10/23/14
PHYGEN
0-10
69
69
69 DA-A
09/17/14
QUALITY
0-10
33
33
33 DA-A
09/30/14
QUALITY
0-10
46
46
46 DA-A
10/09/14
QUALITY
0-10
55
55
55 DA-A
10/23/14
QUALITY
0-10
69
69
69 DA-A
30
0.0 d
0.0 d
2.8 ab
11
9.9 a
7.3 b
5.9 cd
17
9.8 a
7.6 c
6.0 de
22
9.8 a
8.0 cd
6.5 e
28
9.9 a
8.3 cd
6.6 e
12
3.0 a
1.0 b
0.0 c
09/17/14
Marketable
# 0-3
33
33
33 DA-A
09/30/14
Marketable
# 0-3
46
46
46 DA-A
18
Hydrangea m>
Endless Sum>
10/09/14
Marketable
# 0-3
55
55
55 DA-A
3.0 a
1.8 b
0.0 c
23
3.0 a
2.8 ab
0.0 d
1.0 cd
9.3 a
9.3 ab
9.2 ab
9.4 ab
3.0 a
3.0 a
3.0 a
2.3 bc
5.3 de
6.3 d
6.5 e
6.7 e
0.0 c
0.0 c
0.3 d
3.5 ab
5.8 d
5.9 de
6.1 e
6.2 ef
0.0 c
0.0 c
0.0 d
0.0 d
9.3 a
9.0 b
9.2 ab
9.4 ab
3.0 a
3.0 a
3.0 a
3.0 ab
5.0 e
5.8 de
6.0 ef
6.2 ef
0.0 c
0.0 c
0.0 d
3.8 a
5.1 e
5.3 ef
6.0 ef
6.2 ef
0.0 c
0.0 c
0.0 d
0.8 d
7.2 b
7.4 c
8.7 bc
8.7 bcd
0.8 b
1.3 b
2.3 bc
4.0 a
4.1 f
5.0 f
5.4 f
5.4 f
0.0 c
0.0 c
0.0 d
0.3 d
9.3 a
8.9 b
9.3 ab
9.2 abc
2.5 a
2.5 a
2.8 ab
0.5 d
6.6 bc
7.2 c
7.9 d
7.8 d
0.5 bc
0.5 c
1.8 c
1.30
0.91
54.28
1.640
0.1973
11.891
0.0001
0.71
0.50
7.23
0.164
0.9199
60.814
0.0001
0.75
0.52
7.29
0.464
0.7092
37.749
0.0001
0.69
0.48
6.37
0.699
0.5586
41.295
0.0001
0.68
0.48
45.21
0.757
0.5256
29.916
0.0001
0.72
0.51
43.79
0.402
0.7526
27.176
0.0001
Means followed by same letter do not significantly differ (P=.05, LSD)
0.87
0.61
7.94
0.809
0.4971
25.857
0.0001
0.56
0.39
27.19
0.458
0.7131
50.417
0.0001
11/21/14 (HFL14HydrangeaPhyto)
AOV Means Table Page 5 of 15
North Carolina State University
Crop Name
Crop Variety
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
1 Nontreated
2 Nontreated Pruned
3 Freehand
1.75 GR
200 lb/a
Irrigated after treatment
4 Freehand
1.75 GR
200 lb/a
Shaken after treatment
5 Freehand
1.75 GR
200 lb/a
Pruned after irrigation
6 Snapshot TG
2.25 GR
200 lb/a
Irrigated after treatment
7 Snapshot TG
2.25 GR
200 lb/a
Shaken after treatment
8 Snapshot TG
2.25 GR
200 lb/a
Pruned after irrigation
9 OH2
3 GR
100 lb/a
Irrigated after treatment
10 OH2
3 GR
100 lb/a
Shaken after treatment
11 OH2
3 GR
100 lb/a
Pruned after irrigation
12 Tower
6 EC
32 fl oz/a
Irrigated after treatment
13 Tower
6 EC
32 fl oz/a
Pruned after irrigation
LSD (P=.05)
Standard Deviation
CV
Replicate F
Replicate Prob(F)
Treatment F
Treatment Prob(F)
Hydrangea m>
Endless Sum>
Hydrangea m>
Endless Sum>
10/23/14
Marketable
# 0-3
69
69
55 DA-A
09/19/14
VOLUME
CU IN
35
35
35 DA-A
29
3.0 a
2.5 abc
0.8 d
Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum>
10/10/14
VOLUME
CU IN
56
56
56 DA-A
Hydrangea m>
Endless Sum>
Hydrangea m>
Endless Sum>
10/23/14
VOLUME
CU IN
69
69
69 DA-A
10/23/14
ROOT
0-5
69
69
69 DA-A
10/23/14
WEIFRE
G
69
69
69 DA-A
16
6511.3 a
3172.8 d
2182.1 e
27
6968.8 a
4152.0 d
2890.8 ef
32
5272.8 a
3399.8 de
2418.8 f
31
4.9 a
4.3 ab
4.4 ab
33
930.8 a
736.8 b
624.5 c
3.0 a
5266.0 b
5835.5 b
4732.0 b
4.8 a
811.8 b
0.3 de
1773.1 ef
2224.5 fg
2133.8 fg
3.7 c
542.0 cd
0.3 de
2212.1 e
2432.3 fg
2247.8 fg
3.9 bc
620.0 c
3.0 a
4783.9 bc
4928.3 c
3905.0 cd
4.9 a
743.0 b
0.0 e
1394.8 fg
2043.3 gh
1741.5 g
3.6 cd
451.5 d
0.3 de
1969.1 e
2369.8 fg
2202.5 fg
3.9 bc
521.8 d
2.3 bc
4681.1 c
5470.0 bc
4149.5 c
4.3 ab
816.8 b
0.0 e
1040.0 g
1446.3 h
1182.3 h
3.0 d
294.5 e
2.8 ab
5038.0 bc
5303.3 bc
4220.5 bc
4.9 a
832.8 b
2.0 c
2857.8 d
3538.0 de
3078.0 e
4.3 ab
620.0 c
0.63
0.44
28.74
0.787
0.5091
33.852
0.0001
Means followed by same letter do not significantly differ (P=.05, LSD)
538.38
376.74
11.42
2.131
0.1134
86.408
0.0001
766.58
536.42
14.06
6.660
0.0011
42.336
0.0001
534.63
374.11
11.95
3.475
0.0258
45.063
0.0001
0.65
0.39
9.13
0.480
0.6244
7.064
0.0001
97.79
68.43
10.41
1.241
0.3090
26.911
0.0001
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 6 of 17
North Carolina State University
Hydrangea herbicide injury avoidance comparisons
Trial ID: HFL14HydrangeaPhyto
Location: HFL shade
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Protocol ID: HFL12HydrangeaPhyto
Study Director: Neal
Investigator: Joseph C. Neal, Ph.D.
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
Bud
08/18/14
PHYNEC
0-3
3
3
3 DA-A
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
Plot
108
202
304
408
1
Bud
08/18/14
PHYNEC
%
3
3
3 DA-A
2
Plant
08/18/14
PHYGEN
0-10
3
3
3 DA-A
3
Plant
08/29/14
PHYGEN
0-10
14
14
14 DA-A
7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Mean =
107
210
303
404
0.0
0.0
1.0
0.0
1.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Mean =
112
208
306
402
0.5
2.0
2.0
2.0
2.0
0.0
0.0
0.0
0.0
0.0
0.0
1.0
1.0
1.0
2.0
0.0
3.0
3.0
4.0
3.0
Mean =
105
212
309
411
2.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.3
1.0
0.0
0.0
0.0
3.3
2.0
1.0
0.0
0.0
Mean =
106
209
305
412
0.0
2.0
2.0
1.0
2.0
0.0
0.0
10.0
0.0
0.0
0.3
2.0
2.0
1.0
2.0
0.8
2.0
2.0
2.0
1.0
Mean =
110
213
311
410
1.8
2.0
2.0
2.0
2.0
2.5
5.0
10.0
0.0
0.0
1.8
2.0
2.0
2.0
2.0
1.8
4.0
3.0
3.0
2.0
Mean =
102
204
301
407
2.0
0.0
1.0
1.0
0.0
3.8
0.0
0.0
0.0
0.0
2.0
1.0
0.0
0.0
0.0
3.0
1.0
0.0
1.0
1.0
Mean =
0.5
0.0
0.3
0.8
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 7 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
8 Snapshot TG
Pruned after irrigation
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
Bud
08/18/14
PHYNEC
0-3
3
3
3 DA-A
Form Form
Rate
Conc Type Rate Unit
2.25 GR
200 lb/a
Plot
109
201
302
413
1
Bud
08/18/14
PHYNEC
%
3
3
3 DA-A
2
Plant
08/18/14
PHYGEN
0-10
3
3
3 DA-A
3
Plant
08/29/14
PHYGEN
0-10
14
14
14 DA-A
7
2.0
2.0
2.0
1.0
20.0
20.0
10.0
10.0
2.0
2.0
2.0
1.0
2.0
1.0
3.0
2.0
Mean =
103
207
313
405
1.8
3.0
3.0
3.0
3.0
15.0
100.0
100.0
90.0
90.0
1.8
4.0
4.0
4.0
3.0
2.0
4.0
5.0
5.0
4.0
Mean =
111
205
312
401
3.0
2.0
1.0
2.0
2.0
95.0
20.0
20.0
25.0
30.0
3.8
1.0
1.0
3.0
2.0
4.5
3.0
4.0
3.0
2.0
Mean =
104
203
310
406
1.8
3.0
3.0
3.0
3.0
23.8
90.0
90.0
100.0
80.0
1.8
4.0
3.0
4.0
4.0
3.0
5.0
5.0
5.0
4.0
Mean =
32 fl oz/a 113
211
307
403
3.0
0.0
1.0
1.0
1.0
90.0
0.0
0.0
0.0
0.0
3.8
0.0
0.0
0.0
1.0
4.8
0.0
0.0
1.0
2.0
Mean =
32 fl oz/a 101
206
308
409
0.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.0
0.0
0.0
0.0
0.8
0.0
1.0
0.0
1.0
Mean =
0.0
0.0
0.0
0.5
9 OH2
Irrigated after treatment
3 GR
100 lb/a
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 8 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
combined
combined
combined
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
8 Snapshot TG
Pruned after irrigation
2.25 GR
200 lb/a
Plot
108
202
304
408
09/09/14
PHYGEN
0-10
25
25
25 DA-A
09/17/14
PHYGEN
0-10
33
33
33 DA-A
09/30/14
PHYGEN
0-10
46
46
46 DA-A
10/09/14
PHYGEN
0-10
55
55
55 DA-A
10
13
21
24
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Mean =
107
210
303
404
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Mean =
112
208
306
402
0.0
4.0
3.0
4.0
4.0
0.0
5.0
4.0
4.0
4.0
0.0
5.0
4.0
5.0
5.0
0.0
4.0
4.0
3.0
5.0
Mean =
105
212
309
411
3.8
1.5
1.0
0.0
1.0
4.3
1.0
1.0
0.0
0.0
4.8
1.0
1.0
0.0
0.0
4.0
2.0
0.0
1.0
0.0
Mean =
106
209
305
412
0.9
3.0
3.0
3.0
3.0
0.5
4.0
3.0
3.0
3.0
0.5
4.0
2.0
2.0
4.0
0.8
3.0
2.0
1.0
2.0
Mean =
110
213
311
410
3.0
4.0
4.0
3.0
3.0
3.3
5.0
4.0
4.0
4.0
3.0
4.0
5.0
5.0
3.0
2.0
4.0
4.0
4.0
3.0
Mean =
102
204
301
407
3.5
1.0
0.0
1.5
1.5
4.3
0.0
0.0
1.0
1.0
4.3
0.0
0.0
1.0
1.0
3.8
0.0
1.0
1.0
1.0
Mean =
109
201
302
413
1.0
3.0
2.0
3.0
3.0
0.5
4.0
3.0
4.0
5.0
0.5
4.0
4.0
4.0
5.0
0.8
4.0
2.0
3.0
4.0
Mean =
2.8
4.0
4.3
3.3
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 9 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
9 OH2
3 GR
100 lb/a
Irrigated after treatment
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
combined
combined
combined
Plot
103
207
313
405
09/09/14
PHYGEN
0-10
25
25
25 DA-A
09/17/14
PHYGEN
0-10
33
33
33 DA-A
09/30/14
PHYGEN
0-10
46
46
46 DA-A
10/09/14
PHYGEN
0-10
55
55
55 DA-A
10
13
21
24
5.0
5.0
5.0
4.0
5.0
6.0
5.0
4.0
5.0
5.0
5.0
4.0
5.0
5.0
5.0
5.0
Mean =
111
205
312
401
4.8
3.0
2.0
2.0
2.0
5.0
3.0
3.0
3.0
3.0
4.8
2.0
0.0
2.0
3.0
5.0
1.0
1.0
2.0
2.0
Mean =
104
203
310
406
2.3
5.0
4.0
4.0
5.0
3.0
5.0
5.0
6.0
5.0
1.8
5.0
5.0
6.0
5.0
1.5
4.0
3.0
4.0
4.0
Mean =
32 fl oz/a 113
211
307
403
4.5
0.0
0.0
1.5
1.0
5.3
0.0
0.0
1.0
1.0
5.3
0.0
0.0
1.0
1.0
3.8
1.0
0.0
1.0
1.0
Mean =
32 fl oz/a 101
206
308
409
0.6
0.0
1.0
1.0
1.0
0.5
1.0
1.0
0.0
1.0
0.5
0.0
0.0
0.0
1.0
0.8
0.0
0.0
0.0
0.0
Mean =
0.8
0.8
0.3
0.0
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 10 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
combined
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
8 Snapshot TG
Pruned after irrigation
2.25 GR
200 lb/a
Plot
108
202
304
408
10/23/14
PHYGEN
0-10
69
69
69 DA-A
09/17/14
QUALITY
0-10
33
33
33 DA-A
09/30/14
QUALITY
0-10
46
46
46 DA-A
10/09/14
QUALITY
0-10
55
55
55 DA-A
30
11
17
22
0.0
0.0
0.0
0.0
10.0
9.7
10.0
10.0
9.3
9.7
10.0
10.0
9.3
10.0
10.0
10.0
Mean =
107
210
303
404
0.0
0.0
0.0
0.0
0.0
9.9
7.0
6.7
7.7
7.7
9.8
7.7
7.3
7.7
7.7
9.8
8.0
7.7
8.3
8.0
Mean =
112
208
306
402
0.0
3.0
3.0
1.0
4.0
7.3
6.0
6.0
6.3
5.3
7.6
6.0
6.3
6.3
5.3
8.0
6.3
6.7
7.0
6.0
Mean =
105
212
309
411
2.8
4.0
0.0
0.0
0.0
5.9
8.7
9.3
9.7
9.3
6.0
8.7
9.3
9.7
9.3
6.5
8.7
9.0
9.7
9.3
Mean =
106
209
305
412
1.0
3.0
1.0
3.0
2.0
9.3
5.3
5.3
5.0
5.7
9.3
6.3
6.3
6.7
5.7
9.2
6.7
6.3
7.0
6.0
Mean =
110
213
311
410
2.3
4.0
4.0
4.0
2.0
5.3
6.3
5.7
5.0
6.3
6.3
5.7
6.0
5.3
6.7
6.5
5.7
6.0
6.0
6.7
Mean =
102
204
301
407
3.5
0.0
0.0
0.0
0.0
5.8
9.7
9.0
8.7
9.7
5.9
9.0
9.0
8.7
9.3
6.1
9.3
9.3
9.0
9.3
Mean =
109
201
302
413
0.0
4.0
2.0
3.0
3.0
9.3
4.7
5.7
5.3
4.3
9.0
6.0
6.0
6.0
5.3
9.2
6.3
6.0
6.3
5.3
Mean =
3.0
5.0
5.8
6.0
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 11 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
9 OH2
3 GR
100 lb/a
Irrigated after treatment
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
combined
Plot
103
207
313
405
10/23/14
PHYGEN
0-10
69
69
69 DA-A
09/17/14
QUALITY
0-10
33
33
33 DA-A
09/30/14
QUALITY
0-10
46
46
46 DA-A
10/09/14
QUALITY
0-10
55
55
55 DA-A
30
11
17
22
5.0
4.0
4.0
2.0
5.3
4.7
4.7
5.7
5.3
5.0
5.0
6.0
6.0
5.7
6.0
6.3
Mean =
111
205
312
401
3.8
0.0
0.0
1.0
2.0
5.1
7.3
7.3
7.3
6.7
5.3
7.0
8.0
7.3
7.3
6.0
9.3
9.3
8.3
7.7
Mean =
104
203
310
406
0.8
4.0
4.0
4.0
4.0
7.2
4.3
4.0
4.3
3.7
7.4
4.7
5.7
4.7
5.0
8.7
5.3
6.3
4.7
5.3
Mean =
32 fl oz/a 113
211
307
403
4.0
0.0
0.0
0.0
1.0
4.1
9.7
10.0
8.3
9.0
5.0
9.7
9.7
8.0
8.0
5.4
9.3
10.0
8.7
9.0
Mean =
32 fl oz/a 101
206
308
409
0.3
1.0
1.0
0.0
0.0
9.3
6.7
6.3
7.3
6.0
8.9
6.7
6.7
8.3
7.0
9.3
8.0
7.3
8.7
7.7
Mean =
0.5
6.6
7.2
7.9
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 12 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
10/23/14
QUALITY
0-10
69
69
69 DA-A
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
8 Snapshot TG
Pruned after irrigation
2.25 GR
200 lb/a
Plot
108
202
304
408
28
09/17/14
Marketable
# 0-3
33
33
33 DA-A
12
09/30/14
Marketable
# 0-3
46
46
46 DA-A
18
10/09/14
Marketable
# 0-3
55
55
55 DA-A
23
10.0
10.0
10.0
9.7
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
Mean =
107
210
303
404
9.9
7.7
8.0
9.0
8.7
3.0
0.0
0.0
2.0
2.0
3.0
2.0
1.0
2.0
2.0
3.0
3.0
2.0
3.0
3.0
Mean =
112
208
306
402
8.3
6.7
7.0
7.0
5.7
1.0
0.0
0.0
0.0
0.0
1.8
0.0
0.0
0.0
0.0
2.8
0.0
0.0
0.0
0.0
Mean =
105
212
309
411
6.6
8.7
9.7
9.7
9.7
0.0
3.0
3.0
3.0
3.0
0.0
3.0
3.0
3.0
3.0
0.0
3.0
3.0
3.0
3.0
Mean =
106
209
305
412
9.4
6.3
6.7
6.7
7.0
3.0
0.0
0.0
0.0
0.0
3.0
0.0
0.0
0.0
0.0
3.0
0.0
0.0
1.0
0.0
Mean =
110
213
311
410
6.7
6.0
5.7
6.0
7.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.3
0.0
0.0
0.0
0.0
Mean =
102
204
301
407
6.2
9.7
9.0
9.3
9.7
0.0
3.0
3.0
3.0
3.0
0.0
3.0
3.0
3.0
3.0
0.0
3.0
3.0
3.0
3.0
Mean =
109
201
302
413
9.4
5.7
6.7
6.7
5.7
3.0
0.0
0.0
0.0
0.0
3.0
0.0
0.0
0.0
0.0
3.0
0.0
0.0
0.0
0.0
Mean =
6.2
0.0
0.0
0.0
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 13 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
9 OH2
3 GR
100 lb/a
Irrigated after treatment
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
10/23/14
QUALITY
0-10
69
69
69 DA-A
Plot
103
207
313
405
28
09/17/14
Marketable
# 0-3
33
33
33 DA-A
12
09/30/14
Marketable
# 0-3
46
46
46 DA-A
18
10/09/14
Marketable
# 0-3
55
55
55 DA-A
23
5.3
6.3
5.3
7.7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Mean =
111
205
312
401
6.2
9.3
9.7
7.7
8.0
0.0
1.0
1.0
1.0
0.0
0.0
0.0
3.0
1.0
1.0
0.0
3.0
3.0
2.0
1.0
Mean =
104
203
310
406
8.7
5.3
6.0
5.0
5.3
0.8
0.0
0.0
0.0
0.0
1.3
0.0
0.0
0.0
0.0
2.3
0.0
0.0
0.0
0.0
Mean =
32 fl oz/a 113
211
307
403
5.4
9.3
10.0
8.3
9.0
0.0
3.0
3.0
2.0
2.0
0.0
3.0
3.0
2.0
2.0
0.0
3.0
3.0
2.0
3.0
Mean =
32 fl oz/a 101
206
308
409
9.2
8.0
7.7
8.0
7.7
2.5
0.0
0.0
2.0
0.0
2.5
0.0
0.0
2.0
0.0
2.8
2.0
1.0
2.0
2.0
Mean =
7.8
0.5
0.5
1.8
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 14 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
10/23/14
Marketable
# 0-3
69
69
55 DA-A
09/19/14
VOLUME
CU IN
35
35
35 DA-A
10/10/14
VOLUME
CU IN
56
56
56 DA-A
10/23/14
VOLUME
CU IN
69
69
69 DA-A
3.0
3.0
3.0
3.0
16
6268.4
6631.7
6548.3
6596.7
27
5915.0
7539.0
7789.0
6632.0
32
4607.0
5487.0
5861.0
5136.0
Mean =
107
210
303
404
3.0
2.0
2.0
3.0
3.0
6511.3
2849.8
3166.2
3652.8
3022.5
6968.8
3063.0
3831.0
4974.0
4740.0
5272.8
2984.0
3387.0
3444.0
3784.0
Mean =
112
208
306
402
2.5
1.0
1.0
1.0
0.0
3172.8
1865.9
2398.6
2462.0
2001.8
4152.0
2253.0
3465.0
3374.0
2471.0
3399.8
2267.0
2519.0
2741.0
2148.0
Mean =
105
212
309
411
0.8
3.0
3.0
3.0
3.0
2182.1
4271.6
5742.6
5351.1
5698.5
2890.8
4436.0
6553.0
5758.0
6595.0
2418.8
3654.0
5486.0
4882.0
4906.0
Mean =
106
209
305
412
3.0
0.0
0.0
0.0
1.0
5266.0
1625.1
1825.1
1948.8
1693.4
5835.5
1766.0
2344.0
2776.0
2012.0
4732.0
1763.0
2051.0
2786.0
1935.0
Mean =
110
213
311
410
0.3
1.0
0.0
0.0
0.0
1773.1
1632.3
2484.2
2187.8
2544.0
2224.5
1902.0
2437.0
2287.0
3103.0
2133.8
2006.0
2067.0
2287.0
2631.0
Mean =
102
204
301
407
0.3
3.0
3.0
3.0
3.0
2212.1
5058.4
4655.5
4805.7
4615.8
2432.3
5029.0
5029.0
4924.0
4731.0
2247.8
3828.0
4114.0
3439.0
4239.0
Mean =
109
201
302
413
3.0
0.0
0.0
0.0
0.0
4783.9
1319.6
1406.2
1436.0
1417.3
4928.3
1806.0
2012.0
2532.0
1823.0
3905.0
1563.0
1797.0
1876.0
1730.0
Mean =
0.0
1394.8
2043.3
1741.5
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
8 Snapshot TG
Pruned after irrigation
2.25 GR
200 lb/a
Plot
108
202
304
408
29
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 15 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
9 OH2
3 GR
100 lb/a
Irrigated after treatment
Hydrangea m> Hydrangea m> Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum> Endless Sum> Endless Sum>
09/19/14
VOLUME
CU IN
35
35
35 DA-A
10/10/14
VOLUME
CU IN
56
56
56 DA-A
10/23/14
VOLUME
CU IN
69
69
69 DA-A
0.0
0.0
0.0
1.0
16
1666.5
1722.6
1669.6
2817.6
27
1746.0
2580.0
1968.0
3185.0
32
1797.0
1980.0
1911.0
3122.0
Mean =
111
205
312
401
0.3
3.0
3.0
1.0
2.0
1969.1
5001.7
4883.5
4731.2
4107.8
2369.8
5282.0
6003.0
5593.0
5002.0
2202.5
4360.0
4212.0
4201.0
3825.0
Mean =
104
203
310
406
2.3
0.0
0.0
0.0
0.0
4681.1
934.3
1144.8
1055.0
1025.9
5470.0
995.0
1576.0
1368.0
1846.0
4149.5
1099.0
1111.0
1151.0
1368.0
Mean =
32 fl oz/a 113
211
307
403
0.0
3.0
3.0
2.0
3.0
1040.0
5239.8
5866.2
4757.2
4288.7
1446.3
4997.0
6742.0
4757.0
4717.0
1182.3
4335.0
4657.0
3979.0
3911.0
Mean =
32 fl oz/a 101
206
308
409
2.8
2.0
2.0
2.0
2.0
5038.0
2613.4
2967.3
3306.4
2544.0
5303.3
3228.0
3423.0
4219.0
3282.0
4220.5
2650.0
3029.0
3462.0
3171.0
Mean =
2.0
2857.8
3538.0
3078.0
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC
10/23/14
Marketable
# 0-3
69
69
55 DA-A
Plot
103
207
313
405
29
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 16 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
No. Name
1 Nontreated
Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum>
combined
3 plants
Form Form
Rate
Conc Type Rate Unit
2 Nontreated Pruned
3 Freehand
Irrigated after treatment
1.75 GR
200 lb/a
4 Freehand
Shaken after treatment
1.75 GR
200 lb/a
5 Freehand
Pruned after irrigation
1.75 GR
200 lb/a
6 Snapshot TG
Irrigated after treatment
2.25 GR
200 lb/a
7 Snapshot TG
Shaken after treatment
2.25 GR
200 lb/a
8 Snapshot TG
Pruned after irrigation
2.25 GR
200 lb/a
Plot
108
202
304
408
10/23/14
ROOT
0-5
69
69
69 DA-A
10/23/14
WEIFRE
G
69
69
69 DA-A
31
33
.
4.7
5.0
5.0
920.0
901.0
942.0
960.0
Mean =
107
210
303
404
4.9
.
4.7
4.3
4.0
930.8
627.0
700.0
906.0
714.0
Mean =
112
208
306
402
4.3
.
4.7
4.7
4.0
736.8
545.0
696.0
686.0
571.0
Mean =
105
212
309
411
4.4
.
5.0
4.7
4.7
624.5
781.0
840.0
896.0
730.0
Mean =
106
209
305
412
4.8
.
3.7
4.0
3.3
811.8
563.0
587.0
551.0
467.0
Mean =
110
213
311
410
3.7
.
4.3
3.3
4.0
542.0
559.0
646.0
589.0
686.0
Mean =
102
204
301
407
3.9
.
4.7
5.0
5.0
620.0
679.0
758.0
815.0
720.0
Mean =
109
201
302
413
4.9
.
3.3
3.7
3.7
743.0
414.0
479.0
495.0
418.0
Mean =
3.6
451.5
11/21/14 (HFL14HydrangeaPhyto)
Plot Data Summary Page 17 of 17
North Carolina State University
Crop Name
Crop Variety
Description
Part Rated
Rating Date
Rating Data Type
Rating Unit
Days After First/Last Applic.
Trt-Eval Interval
Trt Treatment
Form Form
Rate
No. Name
Conc Type Rate Unit
9 OH2
3 GR
100 lb/a
Irrigated after treatment
Hydrangea m> Hydrangea m>
Endless Sum> Endless Sum>
combined
3 plants
Plot
103
207
313
405
10/23/14
ROOT
0-5
69
69
69 DA-A
10/23/14
WEIFRE
G
69
69
69 DA-A
31
33
.
3.7
3.3
4.7
467.0
484.0
500.0
636.0
Mean =
111
205
312
401
3.9
.
4.0
4.3
4.7
521.8
896.0
775.0
720.0
876.0
Mean =
104
203
310
406
4.3
.
3.3
3.0
2.7
816.8
262.0
319.0
296.0
301.0
Mean =
32 fl oz/a 113
211
307
403
3.0
.
5.0
5.0
4.7
294.5
901.0
940.0
748.0
742.0
Mean =
32 fl oz/a 101
206
308
409
4.9
.
5.0
4.0
4.0
832.8
600.0
664.0
610.0
606.0
Mean =
4.3
620.0
10 OH2
Shaken after treatment
3 GR
100 lb/a
11 OH2
Pruned after irrigation
3 GR
100 lb/a
12 Tower
Irrigated after treatment
6 EC
13 Tower
Pruned after irrigation
6 EC