new pgr choices whipker2 · 2018. 10. 25. · •!primarily foliar applications; good coverage...

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Brian Whipker

PGR Options

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Daminozide

•! Dazide (Fine Americas)

•! B-Nine WSG (OHP)

•! Safe, short-term response

•! Uptake by leaves; good coverage required

•! NO Soil Activity

•! Increased activity as tank mix with chlromequat chloride

Veronica x ‘Sunny

Border Blue’

•! B-Nine/Dazide effective on a wide variety of perennials

•! Multiple applications required at 7 to 14 day intervals

•! Tank mix with chlormequat chloride very effective B-Nine

5000 x 2 Control

Chlormequat Cl

•! Citadel (Fine Americas)

•! Cycocel (OHP)

•! Chlormequat E-Pro (Etigra LLC)

•! Primarily foliar applications; good coverage required

•! LIMITED Soil Activity

–!not labeled for chemigation

•! Labeled for tank mix with daminozide

•! Cycocel labeled for outdoor application

Veronica x ‘Sunny

Border Blue’

•! B-Nine/Cycocel Tank Mix, 4 WAT

•! Good control with single application

Control 5000/

1000

5000/

2000

5000/

3000

5000/

4000

B-Nine

5000 ppm

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Gaillardia x grandiflora

‘Burgundy’

•! B-Nine/Cycocel Tank mix: 30-35% reductions at 3 WAT, NS at 5 WAT

•! Multiple applications may be required

Tank mix

5000/1500

B-Nine

5000 ppm

Control

Ancymidol

•! Abide (Fine Americas)

•! A-Rest (SePRO)

•! Taken up by shoot and root tissues

–!labeled for chemigation

•! Re-evaluate for additional uses due to

cost reductions?

Abide Drenches on

Delphinium ‘Blue Bird’

•! Drenches at 10 fl.oz. per trade gallon pot

•! Control 31.3 cm vs. 8 ppm drench 17.3 cm

Control 2 ppm 4 ppm 6 ppm 8 ppm

4 WAT

Abide Drenches on

Veronica ‘Icicle’

•! Drenches at 2 fl.oz. per quart pot

•! Plant ht: Control 23.7 cm vs. 8 ppm drench 8.9 cm


6 WAT

Paclobutrazols

•! Bonzi (Syngenta Professional Products)

•! Piccolo (Fine Americas, Inc.)

•! Paczol (OHP)

•! Downsize (Greenleaf Chemical, drenches only)

•! Primary uptake by stems and roots

•! Soil ACTIVE (labeled for chemigation)

Soil Active = Volume

is Critical!!

•! Increased volume increases PGR effect

50 ppm Bonzi

Control 1 gal/200 sf 2 gal/200 sf

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Spray Application

Techniques

•! Spray droplet size/volume affects results

50 ppm Bonzi

Bonzi Spray vs. Drench on

Delphinium elatum ‘Blue

Bird’ Bonzi

Control Spray

30 ppm

Spray

60 ppm

Drench

1 ppm

Drench

2 ppm

•! 4 WAT, drench at 10 fl.oz. per pot, persistent response to drenches

Bonzi Spray vs.

Drench ‘Hyperion’

•! Bonzi sprays, 4 WAT, little control

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Bonzi Spray vs.

Drench ‘Hyperion’

•! Bonzi drenches, 4 WAT, moderate control

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SPRAY

•! Rate and volume influence response

•! Addition of surfactant is recommended for

plants with waxy leaves

•! Drying time influences response (slower

drying, stronger response)

•! Have the most potential to delay flowering

when applied late in crop

•! 1+ applications may be required

SPRENCH & DRENCH

•! Rate and volume influence response

•! Best to apply to somewhat moist substrate (not wet or dry) and be consistent

•! If applied overhead, the rate should be about 1.5 to 2 times higher than if applied subsurface to elicit the same response

•! Less potential to delay flowering with a subsurface application

•! Typically only one application is needed

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Piccolo 10XC

!! Fine Americas has introduced a more concentrated form of their paclobutrazol PGR Piccolo.

!!The new formulation is 10 times stronger. !!Smaller/ more convenient package size:

!!1 qt. Piccolo 10xc = 2.5 gal. Piccolo

!! Overcomes the potential settling problems associated with all paclobutrazol formulations.

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Piccolo 10XC

•! Trials throughout the U.S. by university researchers found similar efficacies with both Piccolo and Piccolo10XC.

•! Spray and drench recommendations are similar to Piccolo.

Uniconazoles

•! Concise (Fine Americas, Inc.)

•! Sumagic (Valent USA)

•! Very high activity (10x paclobutrazols)

•! Primary uptake by stems and roots

•! Soil ACTIVE (not labeled for chemigation)

•! Typically very linear rate response with

perennials

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Verbena ‘Homestead

Purple’

•! Sumagic sprays, 2WAT, moderate control,

multiple applications required


Sumagic on

Hibiscus moscheutos

‘Grenache’

•! 6 WAT, saturated response between 0.5 and 1.0 ppm drench (10 fl.oz.per pot)

Control 0.5 ppm

Drench

1.0 ppm

Drench

1.5 ppm

Drench

20 ppm

Spray

Concise on Rudbeckia ‘Goldsturm’

Control 30ppm 45ppm 60ppm 15ppm

Spray 4 WAT

Control 0.5ppm 1.0ppm 1.5ppm 2.0ppm

Drench 4 WAT

Sumagic

•! Now approved for application to fruiting

vegetable transplants

–!Eggplant, Groundcherry, Pepino, Pepper,

Tomatillo, Tomato (not any others!)

•! Applications will result in more compact

transplants with thicker stems

Sumagic •! Keys for use.

–!Follow label recommendations (www.valent.com)

–!Recommended spray concentration range is between 2 to 10 ppm.

–!Make uniform applications at 2 qts/100 sq ft

–! Initial application at the 2 to 4 true leaf stage

–!Sequential applications possible at lowest rate, but no later than 14 days after the 2 to 4 true leaf stage

–!Total amount applied can not exceed 10 ppm.

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Topflor

•! Topflor (flurprimidol) (SePRO)

•! Very active (potent) PGR

•! Taken up by leaves, stems and root tissues

•! Soil ACTIVE

–!labeled for chemigation Control 120ppm 30ppm 60ppm 90ppm

Topflor on Erysimum

linifolium

•! 6 WAT, persistent, rec 30 ppm

Topflor on

Delphinium elatum

‘Blue Bird’

•! Foliar spray, 4 WAT


Preplant Soaks

•! Cost effective alternative to treat bulbs.

•! Topflor is VERY effective as a preplant

bulb soak.

•! Typically:

–!Mix the solution in buckets

–!Soak bulbs 2 to 5 minutes

–!Let drain

–!Plant

Topflor Pre-plant

Soak

25!

0 25 50 100 200 400!

Topflor Substrate Drench

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Topflor Pre-plant Bulb Soak

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Lilium lanciflolium ‘Pink Tiger’ 5 minute soak (ppm)

Protocols for Preplant Soaks

•! Standard Procedure

–!Soak bulbs 2 to 10

minutes

–!Let drain

–!Pot

•! Revised Procedure –! 1 hour water pre-soak

–! 1 hour drain

–! 5 to 10 min. PGR soak

–! 1 hour drain

–! Pot

Augeo

•! OHP is marketing a branching agent

•! Works as a chemical pinching agent, thus decreasing apical dominance and increasing lower bud initiation.

•! Active ingredient dikegulac-sodium

•! Excellent response with fuchsia, lantana, petunia, verbena

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Liner Root Soaks (ppm)

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Augeo

•! Keys for use. –!Apply EARLY in the crop cycle to

stimulate branching and allow ample time for new leaf growth to cover any yellowing or leaf necrosis that may occur.

–!Trial starting point: 400 to 800 ppm foliar spray. Apply sufficient volume to wet the foliage

•! (2 qts / 100 sq ft).

Configure

•! Active ingredient is BA (benzyladenine) •! Uses

–!Branching agent –!Influence flowering –!Height control

•! Registered for: –!Hosta, Echinacea and Holiday cactus. –!Expanded label for experimental use

approved in 2008.

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Configure – Christmas

Cactus •! Early- Increase Phylloclades and Branching

–!The application must be early enough to allow

the phylloclades to fully mature before the start

of short days.

LONG DAYS

Configure – Christmas

Cactus •! Late – Increase Flower Buds

–! Floral initiation begins under short day conditions.

–! Optimally short day conditions are achieved with exact control of the long day and short day photoperiods.

–! The time to apply Configure is one week after floral initiation when black cloth is used.

–! If relying upon natural season day length conditions, apply Configure within 2 days after the first flower buds are visible. This typically occurs in early October.

NOTE: Applications made in late September while the plants are still vegetative will stimulate additional phylloclades instead of flower buds, resulting in flower delay.

SHORT DAYS

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Hosta Production

•! BA at 3000 ppm,

foliar spray

•! Increased lateral

bud break on the

rhizome

•! Increased divisions

•! Increased sales

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Configure - Keys to

Use •! Stimulates - but does not cause – branching

or flowering.

–!Windows of opportunity.

•! Short period of activity (~1 week).

–!Multiple applications may be beneficial.

•! Complete spray coverage required

–!Not actively transported throughout the plant.

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•! Florel product

•! Can have a range of effects on crops, including abortion of flowers & buds, increase branching, and inhibit stem extension

•! Can be applied as a spray or drench

•! Responses depend on the environment and can be variable and less predictable

•! Generally inexpensive

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Substrate Drenches (ppm)

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Substrate Drenches (ppm)

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•! A cost effective method of controlling growth and increasing branching.

–!Drench applications increase the options for using Florel.

–!Must manage timing to avoid flower delay

–!Species and cultivars vary in response, thus you have to conduct your own rate trials

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•! Influence cell expansion

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BA + GA Fascination / Fresco

•! Plant Growth –! Promotes plant growth

–! Increases stem growth

–! Promotes branching

•! Flowering –! Initiates flowering

–! Increases flower size

–! Increases bract size

•! Post-Harvest –! Prevents leaf yellowing

–! Delays flower senescence

Fascination / Fresco

•! Poinsettia

–! Increase stem length, leaf size and bract size.

–!Benefits: internode elongation, stimulated

vegetative growth

–!Early season applications

•! 3 ppm

•! Timing: prior to the start of short days and flower

initiation

•! Do not apply from short days until 2 to 3 weeks

after first color (delays coloration)

•! Do not overdose (or excess stretching can occur)

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Suggested Uses of

Fascination or Fresco on

Poinsettia

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new pgr choices whipker2 · 2018. 10. 25. · •!primarily foliar applications; good coverage...

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