Registered as a Fungicide for Botrytis Control in Grapes Its main use is as an Adjuvant with other...

TM

Registered as a Fungicide for Botrytis Control in GrapesIts main use is as an Adjuvant with other products to improve Disease and Pest Control in Grapes

TM

Protectorhml

What is it?• Protectorhml is a pure potassium soap manufactured

from fractions of vegetable oils – it is not and does not contain oil.

• Chemically it is a unique complex of fatty acids of potassium salts. No two soaps act in the same way, some may or may not be fungicidal, insecticidal, herbicidal or soluble.

• Fatty acids are naturally occurring in plants and animals. The fatty acids making up Protectorhml are identical to those contained in wine.

TM

Protectorhml

Compatible with ?• Wettable Sulphur• Copper – hydroxide and oxide• Potassium bicarbonate• Seaweed and some fish extracts (not fish oils)• Several biologicals – note in most cases it is not

cleared by other manufacturers.• Commonly used with Captan and other chemicals

- be aware of compatibility and alkaline hydrolysis.

Protectorhml

Not compatible with ?

• Many trace element supplements, such as calcium based products or products that contain nitrogen as a synergist/sticker.

• Many chemicals and/or the adjuvants or other additives contained in them.

• There is about to be more information on the website. Hort Research compatibility studies with sodium bicarbonate.

• Precautions to apply:-Avoid compounds that are not compatible with alkaline materials or

suffer from alkaline hydrolysis.Undertake a ‘jar’ test to check for flocculation or scum.Do not leave any spray mix sit for long periods Always rinse out spray tanks after use.

Protectorhml

Modes of action as an adjuvant

• Protector spreads its companion product better than the companion product would under normal spray conditions. (Slide 6)

• Protector when wet, gathers spores together. (Slide 8)• Protector, as a potassium soap, provides some degree of

UV protection. (Numerous scientific articles on internet)• Protector has its own fungicidal and fungistatic activity.• Protector when it dries is not immediately soluble again

as it goes through a ‘gel’ state. It requires more than a wet surface to move it off – acting as a sticker .

the spreading activity of Protectorhml

Example – Protectorhml and Sulphur

the spreading activity maths of

Protectorhml

Droplet spread areas from single droplet deposit tests (one 4 micro litre droplet per plate)

Droplet diameter (mm)

ProtectorPotassium bicarbona

te

Sulphur g/l

1 2 3 4 5 Average diamete

rDiameter Std dev

Area/drop mm2

nil nil nil 2.7 2.6 2.9 2.7 2.7 2.7 0.10 5.8nil nil 10 2.7 2.7 2.7 2.7 2.7 2.7 0.02 5.7

0.5% nil 10 6.5 6.5 6.4 6.3 6.4 6.4 0.08 32.2

1X4 micro litre droplets on each of 5 plates30 sec to deposit30 sec scan intervals out to 2.5 min from last deposit

Protectorhml – an anionic surfactantmicroscopic surface photo - the gathering of spores (dyed blue)

Another Potassium soap with free vegetable oilMicroscopic surface photo – fungal spores (dyed blue)

Powdery Mildew Trials (PM1)

Protectorhml + Sulphur or Copper

• 2005/06 - Verdelho block (2.4ha) decimated with Powdery Mildew

• 2006/07 - Replicated Hand Sprayer Trial – 15 Treatments, remainder of block DMIs and S

• 2007/08 - Machine Sprayed Trial – 6 treatments

• 2008/09 – Confirming with full vineyard trials in Hawkes Bay and Gisborne

Hand Sprayed Trial 2006/07 (PM2)

Summary of Treatments

UntreatedUntreated ProtectorProtectorhml hml alonealoneStandard – Systhane Standard – Systhane (2) + S(2) + S

Sulphur aloneSulphur alone

Standard – Impulse (2) Standard – Impulse (2) +Systhane + S +Systhane + S

ProtectorProtectorhmlhml 0.5% + S 0.5% + S (4/3/2 kg / ha)(4/3/2 kg / ha)

Standard – Systhane + Standard – Systhane + Twist + STwist + S

ProtectorProtectorhmlhml 2% + Cu 2% + Cu (120/90/60/30 ml / (120/90/60/30 ml / 100 l)100 l)ProtectorProtectorhmlhml + Cu and + Cu and S – alternating (2 S – alternating (2 rates)rates)

Hand Sprayed Trial 2006/07 (PM3)

ResultsResults % Total % Total Infected Infected BunchesBunches

UntreatedUntreated 36.736.7Standard – Systhane (2) + SStandard – Systhane (2) + S 00Standard – Impulse (2) +Systhane Standard – Impulse (2) +Systhane + S + S

0.60.6

Standard – Systhane + Twist + SStandard – Systhane + Twist + S 00ProtectorProtectorhml hml alonealone 3.63.6Sulphur aloneSulphur alone 3.03.0ProtectorProtectorhmlhml 0.5% + S (4/3/2 kg) 0.5% + S (4/3/2 kg) 0.4 / 1 / 0.20.4 / 1 / 0.2ProtectorProtectorhmlhml 2% + Cu 2% + Cu (120/90/60/30ml)(120/90/60/30ml)

0.1 / 0 / 0 / 0.40.1 / 0 / 0 / 0.4

ProtectorProtectorhmlhml + Cu and S – + Cu and S – alternating (2 rates)alternating (2 rates)

0.1 / 0.30.1 / 0.3

Machine Sprayed Trial 2007/08

Protectorhml and Sulphur - Dates, Rates and Intervals (PM4)

Powdery Mildew Field trial, Hawke’s BayDate of Application

Low Water Rate High Water Rate Spray Interval(days)

26 Oct 2007 150 l/ha 200 l/ha

13 Nov 2007 150 l/ha 300 l/ha 18

23 Nov 2007 200 l/ha 400 l/ha 10

11 Dec 2007 300 l/ha 600 l/ha 18

3 Jan 2008 300 l/ha 600 l/ha 23

Machine Sprayed Trial 2007/08 (PM5)

Results

Treatments

Number of bunches infected with powdery mildew

Sample size = 400 bunchesAssessment dates

27/12/07 8/1/08 23/1/08

Low water with 0.5%

Protectorhml

2 kg/ha S 0 1 83 kg/ha S 0 0 04 kg/ha S 0 0 1

High water with 0.5%

Protectorhml

1.5 kg/ha S 0 0 12 kg/ha S 0 0 03 kg/ha S 0 0 0

Protectorhml and Copper Powdery Mildew Trials –Hort Research Studies (PM 6)

19971997 19981998 19991999

Untreated Untreated 27.127.1 9494 47.847.8

Protector and CopperProtector and Copper(Protector was 2%- botrytis studies)(Protector was 2%- botrytis studies)

4.24.2 00 2.12.1

Standard Treatments Standard Treatments 6.36.3 33 4.44.4

Erinose Mite Control (PM7)

Erinose mite was studied on the side of our powdery mildew studies.Best control was achieved by an application of 7% lime sulphur to ‘run off’ on trunks and cordons at ‘woolly bud stage’ – between the growth stages of photographs, left and centre. In Hawkes Bay, only once was required and no follow up was required the following season – in both trial and commercial settings.

All treatments following ‘woolly bud’ suppressed rather than eradicated.Erinose Mite control improves with increased•Sulphur Rate•Water Rate•and the inclusion of Protectorhml

Summary of Protectorhml efficacy against botrytis (7 years)A comparison of Protectorhml and standard Botrytis programmes assessed at vintage. Values are the percentage of crop infected with Botrytis.

* data from 2002-03 seasons has not been statistically analysed ** full field rate applied at 750-1000l/ha (high volume) Figures in parenthesis are the number of applications.

Late season efficacy of Protectorhml against Botrytis

Four applications of ProtectorTM (2%) were applied post veraison to vines at the Lawn RdResearch Centre, Hawkes Bay in the 2002-03 growing season to determine if late season only applications reduced Botrytis bunch rot at harvest.

Key finding· ProtectorTM was at least as effective as Captan and demonstrated late season efficacyagainst Botrytis fruit infection.

Monowai Chardonnay Handspray after veraison

HML32 and others – Summary Fruit Composition

Monowai Chardonnay Handspray after veraison

HML32 and others – brix and yield comparisons