The Tri-base Blue® difference• Ultra-fine copper particle

size enables superior coverage and enhanced disease control

• 100% of the copper applied can release copper ions - 75% released immediately for fast protection, remaining 25% delayed release for extended duration of protection

• Neutral pH formulation - ideal tank-mix partner for alkaline hydrolysis sensitive insecticides

• Excellent crop safety

• Ease of mixing and application

• Only 1 day WHP to harvest provides flexibility with crop management

Experience the Tri-Base Blue® advantage– The superior copper for vegetable production

Complete protection for best crop

Technical Guide

With 190g/L copper present as tri-basic copper sulphate, Tri-Base Blue liquid copper formulation is a cut above other coppers.

Advantage

Tri-Base Blue is superior to many other copper formulations because of its unique copper ion release pattern. Upon application and in the presence of moisture, approximately 75% of the copper ions are released immediately. The remaining 25% of the copper ions require exposure to atmospheric carbon dioxide and moisture to be released. This two-step release process means Tri-Base Blue delivers a quick knockdown followed by a slower, more uniform release, providing extended protection. Unlike copper oxychlorides and copper oxides, 100% of the copper ions present become available.

Tri-Base Blue provides superior efficacy on key diseases such as Downy Mildew (refer Graph 1) compared with other copper sources such as cuprous oxide.

Application

Tri-Base Blue may be applied in a dilute or concentrate spray volume by ground-rig. Tri-Base Blue may also be applied by aerial application using water volumes of 20 – 40 litres per hectare.

Wetting Agents

Activator should be used when applying Tri-Base Blue:

• to brassicas, peas and onions

• as a concentrate spray

• via aerial application

• when required for other pesticides in a compatible tank-mix

Getting the most out of Tri-Base BlueThe key to successful disease protection with copper is maximising foliar coverage. Plant surfaces need to have a complete coverage of copper fungicide to defend the plant against infection. Copper fungicides work by preventing spore germination and mycelial growth. Any plant surface left untreated remains a potential disease infection site.

Particle size is a key factor for achieving desirable coverage of copper fungicides. The ultra-fine particles of Tri-Base Blue, where 70% of particles are less than one micron, provide a greater surface area than alternative products with larger particles. This allows the copper to exert its full potential against fungi and bacteria.

In the presence of moisture, the copper ions become active and protect against diseases that develop in the same conditions, such as Downy Mildew & Bacterial Spots.

How Tri-Base Blue worksGraph 1: Efficacy of Tri-Base Blue on Downy Mildew over time

0

10

20

30

40

50

60

70

80

90

100

7 Day 14 Day 21 Day

% Incidence of Downy Mildew over time

Control Tri-Base Blue 250mL/100L Nordox 750 WG 100g/100L

Vegetable Crop Disease

Beans Common blight (Xanthomonas campestris pv. phaseoli)

Halo blight (Pseudomonas syringae pv. phaseolicola)

Bacterial brown spot (Pseudomonas syringae pv. syringae)

Rust (Uromyces spp.)

Chocolate spot (Botrytis spp.)

Beetroot Downy mildew (Peronospora farinosa)

Rust (Uromyces betae)

Brassicas Black rot (Xanthomonascampestris)

Peppery leaf spot (Pseudomonas syringae pv. maclicola)

Ring spot (Mycosphaerella brassicicola)

Downy mildew (Peronospora parasitica)

Capsicum Bacterial spot (Xanthomonas campestris pv. vesicatoria)

Bacterial canker (Corynebacterium michiganense pv. michiganense)

Carrots Leaf spot (Alternaria, Cercospora Septoria)

Celery Leaf spot (Septoriaapiicola)

Bacterial soft rot (Erwinia carotovora pv. carotovora)

Cucurbits Angular leaf spot (Pseudomonas syringae pv. lachrymans)

Bacterial leaf spot (Xanthomonas campestris pv. cucurbitae)

Lettuce Downy mildew (Bremia lactucae)

Bacterial leaf spot (Xanthomonas campestris pv. vitians)

Anthracnose (Marssonina panattoniana)

Onions Downy mildew (Peronospora destructor)

Parsnips Leaf spot (Septoria spp.)

Peas Ascochyta blight (Ascochyta spp.)

Bacterial blight (Pseudomonas syringae pv. syringae)

Potatoes Target spot/early blight (Alternaria solani)

Irish blight/late blight (Phytophthora infestans)

Rhubarb Crown rot (Phytophthora spp.)

Spinach Downy mildew (Peronospora farinosa)

Tomatoes Bacterial spot (Xanthomonas campestris pv. vesicatoria)

Bacterial speck (Pseudomonas syringae pv. tomato)

Bacterial canker (Corynebacterium michiganese pv. michiganese)

Target spot/early blight (Alternaria solani)

Septoria leaf spot (Septoria spp.)

Irish blight/late blight (Phytophthora infestans)

Take control of disease

* Refer product label for further details

Tri-Base Blue provides robust protection against key fungal pathogens in a diverse range of vegetable crops*.

Tri-Base Blue is compatible with the following products used in vegetable crop production*.

Fungicides

• Penncozeb® 750DF

• Fortress® 500

• Microthiol® Disperss®

Adjuvants

• Du-Wett®

• Designer®

• Activator®

Please refer to respective product labels for registered uses in specific crops.

For more information on Tri-Base Blue®, contact your local Nufarm Territory Manager.

nufarm.com.au

Compatibilities

The information and recommendations set out in this brochure are no substitute for professional or expert advice and are based on tests and data believed to be reliable at the time of publication. Results may vary, as the use and application of the products is beyond our control and may be subject to climatic, geographical or biological variables, and/or developed resistance. To the maximum extent permitted by law, Nufarm Australia Limited disclaims all warranties of any kind, whether express or implied, including but not limited to any warranty that the information is up-to-date, complete, true, legally compliant, accurate, non-misleading or suitable.

©2019 Nufarm Australia Ltd. All trademarks (®,™) are owned by Nufarm Australia Ltd or used under license.

®Hydrocop is a registered trade mark of Melpat. ®Kocide is a registered trade mark of Corteva Agriscience.

Tri-Base Blue’s neutral pH formulation (demonstrated in Graph 2 & 3) provides significant benefits compared with alternative copper sources. A neutral pH means that Tri-Base Blue offers greater flexibility with tank-mix partners (refer Graph 3) such as alkaline hydrolysis sensitive insecticides. DO NOT use in spray solutions less than pH 6.5 as crop burn may result such as in mixtures with Phos acids (Graph 3) or acidifying adjuvants.

Graph 2: Tri-Base Blue formulation pH compared with alternative copper formulations.

Graph 3: Copper pH screens – Dilute and Concentrate Spray Applications

* Refer Product Labels for registered use patterns for specific crops.

10.5

10

9.5

9

8.5

8

7.5

7

6.5

Unt

rea

ted

Co

ntro

l

Cha

mp

® D

P W

G

Cha

mp

® 5

00W

G

Hyd

roco

p®

WG

Koci

de

® B

lue

Xtr

a

Tri-B

ase

Blu

e

No

rshi

eld

750

WP

Bord

ea

ux

(tri-b

asi

c co

pp

er

sulp

hate

)

Copper pH screens

10

pH

9

8

7

6

5

Dilute Concentrate 2-3x

Five Copper trials - pH - Dilute and concentrate application

Unt

rea

ted

Co

ntro

l

Tri-B

ase

Blu

e

Koci

de

Blu

e X

tra

Tri-B

ase

Blu

e

Koci

de

Blu

e X

tra

Tri-B

ase

Blu

e+D

u-W

ett

TTri

-Ba

se B

lue

+Pe

nnco

zeb

®75

0DF+

Du-

We

tt

TTri

-Ba

se B

lue

+Ph

os

aci

d+D

u-W

ett