less applied copper, dupont kocide opti ™ kocide ® opti fungicide / bactericide for the control...

DuPont™

Kocide® Opti™

FUNG I C I DE / BACTER I C I DE

For the control of fungal and bacterial pathogens

Less applied copper, more protection.Kinder on the environment.

www.cropprotection.dupont.co.nz

More protection from less copperMore than 30 years of DuPont R&D have produced vast improvements in copper fungicide mixing, handling and spraying. A steady reduction in the amount of applied elemental copper has been another.

DuPont™ Kocide® Opti™ fungicide/bactericide reduces the amount of elemental copper being applied without compromising disease protection or mixing, handling and spraying benefits.

Applying less elemental copper is better for the environment.

Kocide® Opti™

• Less applied copper is better for the environment

• Fewer hassles during spraying and mixing

• Protection from fungal and bacterial diseases

How Does Kocide® Opti™ Work?Copper fungicides inhibit fungal spore germination and mycelial growth. The active agents are free copper ions (Cu++) released from the applied copper. Effectiveness of disease control should be the determining factor when choosing a copper fungicide, and a direct measure of a product’s effectiveness is the amount of copper ions it produces, not its metallic copper content alone.

The most effective copper compounds for the prevention of plant diseases are the fixed coppers, particularly copper hydroxide, as crystals of these compounds have the largest surface area for the release of copper ions.

These crystals adhere to the leaf surface and act as ion reservoirs, continuously releasing Cu++ ions, forming a protective barrier that prevents infection.

Less copper, more copper ions Kocide® Opti™ protects against bacteria & fungi with less applied copper through a development called BioActive™ copper. BioActive™ copper is the sum total of having

• more available copper ions, and

• an effective carrier to get them to the target and retaining these ions on the target plant.

This results in more copper ions available for disease protection.

Figure 1:- The Kocide® Opti™ hydroxide crystal has a large surface area that results in more release sites for Cu++ ions

Kocide® Opti™ Copper Oxychloride

x 50,000

Kocide® Opti™ Crystal Compared to Copper Oxychloride

Figure 2: Kocide® Opti™ formulation produces more copper ions for disease control than other copper formulations.

Copper Sulphate

Copper Oxide

Copper Oxychloride

Copper Ammonium Acetate

Kocide® 2000DS

Kocide® Opti™


Copper particle size mattersCopper particles of varying size are formed during any copper fungicide manufacturing process; this is problematic as the very large and very small particles are easily dislodged from the leaf. Research conducted by DuPont has shown that copper particles of less that one micron contribute little or no crop protection. Kocide® Opti™ has a median particle size of 2.5 microns, maximising the amount of the fungicide that is retained on the leaf and providing excellent retention after rainfall events.

Superior plant tenacityAlthough Kocide® Opti™ has a more even particle size, some small copper crystals still inevitably occur. To retain more of these on the leaf surface and thus increase the level of bio-available Cu++ ions for disease prevention, DuPont has developed a special patented co-formulant for Kocide® Opti™ that binds these very small particles to form copper complexes. These are retained on the surface of the plant in an adhesive film, a further source of copper ions for disease control.

BioActive™ sub-micron particlesFigure 3: The small particles (less than 1 micron in size) are bound together in a co-formulant and retained on the leaf. Making a second source of copper ions for disease prevention.

Particle Size – Kocide® Opti™ is an optimum particle size for increased coverage and performance

Too LargeToo Small Kocide® Opti™

Hassle-free SprayingKocide® Opti™ also brings benefits to the spraying process. The unique spray dried dry flowable formulation:

• Mixes well - superior dispersion and suspensibility

• Readily passes through filters and nozzles

• Is easy to measure and handle - pours like a liquid

• Has low dust levels

• Is low-foaming

Superior dispersion and suspensibilityKocide® Opti™ has superior bulk wetting qualities and completely disperses as soon as it is added to the spray tank. With 85% suspensibility, the particles stay in suspension longer, resulting in better mixing, improved compatibility and easier spraying. Sprays containing Kocide® Opti™ should be used within three hours of preparation but will remain stable and re-suspend easily if left standing.

Readily passes through nozzles and filtersReadily passes through nozzles and filters Kocide® Opti™ easily passes through filters and nozzles. To ensure best results when tankmixing with other insecticides, fungicides and foliar fertilisers, ensure you follow the correct mixing procedure. DO NOT premix Kocide® Opti™ with water before adding the slurry to the spray tank.

Figure 4: Kocide® Opti™ mixes instantly in water and suspends and re-suspends readily. Kocide® Opti™ easily passes through filters and nozzles. To ensure best results when tank-mixing with other insecticides, fungicides and foliar fertilisers ensure you follow the correct mixing procedure and DO NOT premix Kocide® Opti™ with water before adding to the spray tank.

Kocide® Opti™ Blue Shield1 Copper Oxide Champ2 DP Copper Oxychloride

Kocide® Opti™

100 mesh sleeveKocide® Opti™

200 mesh sleeve


International standard assessment of dustiness

Category Dust gravimetric collection (mg)

Interpretation

1 0 - 12 Nearly dust free

2 12 - 30 Essentially non dust

3 > 30 Dusty

Figure 5: A 30 g sample is allowed to fall under standard conditions in a chamber releasing dust. Dust is collected on a filter paper placed on a glass sided filter box. The filter paper is re-weighed, the difference in weights is defined as the “collected dust”.

LESS DUST

Kocide® Opti™ Kocide® 2000DS Kocide® DF

2.3 mg 3.1mg 3.5mg

Low FoamingUnlike other copper formulations Kocide® Opti™ does not foam up during the spraying operation.

Kocide® Opti™ Blue Shield1 Copper Oxide Champ2 DP Copper Oxychloride

Figure 6: Kocide® Opti™ is low foaming, resulting in less mess during the mixing and spraying operation.

Easy to measure and handleKocide® Opti™ is formulated into a dry flowable granule. Due to the size and shape of the small uniform granules, Kocide® Opti™ will flow and handle like a liquid. There is no sticking or clumping as there sometimes is with wettable powders. Should you accidentally spill some material it can effectively be recovered with a broom and dustpan.

DuPont™ Kocide® Opti™ fungicide/bactericide may be measured volumetrically. As a guide use the scale at right. Pour DuPont™ Kocide® Opti™ fungicide/bactericide slowly into a dry measuring cylinder or jug.

50 g = 55 mL 100 g = 110 mL 150 g = 165 mL 200 g = 220 mL 250 g = 275 mL 300 g = 330 mL 500 g = 550 mL 1000 g = 1100 mL

Kocide® Opti™

Low dust levelsContinual improvements in formulations have resulted in Kocide® Opti™ becoming virtually dust-free - a real bonus for workers and the environment.

1kg 1.1L

Mixing DirectionsKocide® Opti™ is not water soluble, it is water dispersible and as such must have direct contact with water to disperse. Always pour Kocide® Opti™ slowly into water while stirring. No additional surfactants are needed.

Fill spray tank one-half full with water. Pour the correct quantity of Kocide® Opti™ slowly into the tank while hydraulic or mechanical agitation is operating and continue filling with water. Spreaders, stickers, insecticides and nutrients etc should be added last only after the Kocide® Opti™ has been thoroughly mixed. Observe all cautions and limitations on the labels of all products used in mixtures.

Add products in the following order:1. Water soluble bags (WSB)

2. Water soluble granules (SG) Kocide® Opti™

3. Water dispersible granules (WG, XP, DF)

4. Wettable powders (WP)

5. Water-based suspension concentrates (aqueous flowable) (SC)

6. Water-soluble concentrates

7. Suspo-emulsions (SE)

8. Oil-based suspension concentrates (OD)

9. Emulsifiable concentrates (EC)

10. Surfactants, oils, adjuvants

11. Soluble fertilizers

12. Drift retardants

SurfactantsKocide® Opti™ does not require a wetting agent or spreader/sticker, although one may be used if required when tank-mixing with other products. If using a surfactant always add it to the spray vat as per the order above, and use the lowest recommended surfactant rate.


CompatibilityKocide® Opti™ is compatible with most commonly used fungicides and insecticides as a tank mix. DO NOT MIX with Attack® for use on glasshouse crops. DO NOT MIX with diazinon or with strongly alkaline or acidic materials. If compatibility is in question, use the compatibility jar test before mixing a whole tank. For further information, consult your supplier.

Crop SafetyKocide® Opti™ should not be applied in a spray solution having a pH of less than 6.5 as phytotoxicity may occur. Applying Kocide® Opti™ in a spray solution having a pH greater than 9.0 may result in reduced level of disease control. Environmental conditions such as extended periods of wet weather, which alter the pH of the leaf surface, may affect the performance of Kocide® Opti™ resulting in possible phytoxicity or loss of effectiveness.

Fungicide Resistance Warning Kocide® Opti™ is a member of the Inorganic group of fungicides. For resistance management the product is a Group M1 fungicide.

Some naturally occurring individual fungi resistant to Group M1 fungicides may exist through normal genetic variability in any fungal population. The resistant individuals can eventually dominate the fungal population if these fungicides are used repeatedly. These resistant fungi will not be controlled this product or other Group M1 fungicides, thus resulting in a reduction in efficacy and possible yield loss. Since the occurrence of resistant fungi is difficult to detect prior to use, DuPont accepts no liability for any losses that may result from the failure of this product to control resistant fungi. Monitor insect populations for loss of field efficacy.

Directions for UseRestraints:

DO NOT apply when temperatures exceed 35°C.DO NOT apply when slow drying conditions prevail.DO NOT apply to copper-shy crops or cultivars.DO NOT apply if it is likely to rain before the spray is dry.DO NOT apply to wet crops.DO NOT apply in spray solutions having a pH of less than 6.5 as phytotoxicity may occur.

CROP DISEASE RATE g/100litres APPLICATION RATE AND TIMING

Apples Black spot 110 (minimum 2.2 kg/ha)

Apply as a full cover spray. Make application between silver-tip and green-tip. CAUTION: Late application may cause phytotoxicity. Discontinue use when green-tip is 1 cm.

Asparagus Stemphylium leaf spot

250 – 375 (minimum 2.5 kg/ha)

Commence spraying at first appearance of disease after closing up and repeat at 14 day intervals. Ensure good plant coverage. Under high disease pressure a programme of up to six applications may be necessary.

Avocado Anthracnose 70 – 90 (minimum 2.0 kg/ha)

Apply at monthly intervals from flowering to harvest. Use the higher rate when conditions favour disease. During prolonged wet weather, reduce application intervals to 14 days.

Beans Bacterial blight (Halo and common)

250 – 310 (minimum of 1.36 kg/ha)

Apply as a protective spray at 7 - 14 day intervals when plants are 15 cm high.

Bushfruit Cane

Cane Wilt, Cane Spot, Spur Blight, Leaf Spot

70 – 90 (minimum 0.65 kg/ha)

Apply at bud burst and green tip and as a seasonal spray at 10-14 day intervals. Use the higher rate early season or under high disease pressure.

Celery Septoria Leaf Spot 90 (minimum 0.44 kg/ha)

Apply as soon as the plants are set in the field, then at 5 - 7 day intervals depending on disease severity and environmental conditions. Sunspray® may be added at 1 litre per 100 litres of spray mix.

Citrus Melanose, Verrucosis

45 – 90 (minimum 1.75 kg/ha for mature trees)

Apply during pre and post bloom periods.

Brown Rot 90 – 110 (minimum 1.75 kg/ha for mature trees)

Apply in the autumn and continue as needed. Apply to skirts of trees to a height of at least 1 metre. Apply also to bare ground 0.5 metres beyond skirt. Use higher rates when conditions favour disease. Copper marking may occur on sensitive varieties or under slow drying conditions.

Cucurbits Angular Leaf Spot. Downy Mildew

70 – 130 (minimum 0.65 kg/ha)

Apply at 7 day intervals after plants have started to vine.

Feijoas Leaf Spot (Glomerella sphaceloma)

70 – 90 (minimum 1.0 kg/ha)

Repeat as necessary.



Forestry, Pinus radiata

Pine needle blight 2.5 - 4.4 kg/ha (aerial to plantations)

Apply in 60 – 100 L/ha. Make one application in November or early December. Repeat at yearly intervals if necessary

1.25 - 3.1 kg/ha (ground application to nurseries)

Apply with 1% summer oil in 600 - 1,100 L of water/ha. Commence spraying in October or November and repeat at monthly intervals until planting out.

Grapes Black Spot, Downy Mildew

65 – 130 (minimum 0.9 kg/ha)

Begin application at bud break and continue to apply during the pre and post bloom periods at 10 - 14 day intervals until harvest. NOTE: Discontinue use if signs of injury are observed.

Kiwifruit Leaf Spot(Phomopsis sp. and others), Botryosphaeria

70 – 90The rate is for dilute spraying only (spray up to point of run-off ). For concentrate spraying, adjust dilution rate accordingly.

Apply as post harvest dormant spray only. Apply after harvest but before leaf fall, after pruning, and as two sprays one month apart prior to bud burst.

Apply as protectant timed prior to a significant rainfall (infection) event or immediately after when crop is dry. Apply at pre- and post-flowering. DO NOT apply to open flowers.Use the higher rate if a major or extended rain event is expected.Warning higher rates and/or multiple applications and/or poor drying conditions can result in leaf drop, leaf marking, and marginal leaf burn.Fruit marking may occur from any application post flowering, but the risk will reduce as the season progresses. Some varieties (e.g. Hort16A, Green14) appear more sensitive than other varieties to repeated applications of copper. Tank mixing with other chemistry may increase fruit marking and leaf damage.Kocide® Opti™ must be used as part of a Psa management program. Refer to the latest Zespri Crop Protection program and Kiwigreen Best Practice guidelines for more information.

Psa(Pseudomonassyringae pathovaractinidiae)(suppression only)

Onions Downy Mildew, Bacterial blight

90 (minimum 1.0 kg/ha)

Apply when the disease first appears and repeat every 10 - 14 days while conditions allow infection.

Passionfruit Septoria Spot, Brown Rot, Grease Spot


Apply at 2-4 week intervals alternating with mancozeb from November to March. Where grease spot is a problem, 2 week intervals may be necessary.

Peas Downy Mildew, Leaf Spot

70 – 90 (minimum 0.66 kg/ha)

Apply from seed emergence and repeat at 7 - 14 day intervals depending upon disease severity.

Pear (including Nashi)

Black spot 110 (minimum 2.2 kg/ha)

Apply as full cover spray. Make application between silver-tip and green-tip. CAUTION: Late application may cause phytotoxicity. Discontinue use when green-tip is 1 cm.

Fire Blight (Erwinia amylovora)

25 - 45 NON-BEARING TREES: Maintain a protective cover of regular sprays at 14 - 21 day intervals until active vegetative growth ceases. Reduce interval between sprays if wet weather persists.

POST HARVEST: Apply at 110 g/100 L at 21 day intervals from harvest to leaf fall. Reduce intervals between sprays if wet weather occurs and vegetative growth is active. SMOOTH SKIN VARIETIES: DO NOT apply between green tip and harvest as russeting may occur.

This reference guide is not intended as a substitute for the product label for the product(s) referenced herein. Product labels for the above product(s) contain important precautions, directions for use and product warranty and liability limitations that must be read before using the product. Applicators must be in possession of the product label(s) at the time of application. Always read and follow all label directions and precautions for use when using any pesticide alone or in tank mix combinations.


Potato Early Blight, Late Blight

130 – 200 (minimum 1.3 kg/ha)

Apply every 7 days from when plants are 15 cm high until 2 weeks before harvest.

Strawberries Leaf Spot 70 – 90 (minimum 0.65 kg/ha)

Begin application when plants are established and continue on a weekly schedule throughout the season. Use the higher rate early season or under high disease pressure. NOTE: Discontinue if signs of crop injury appear.

Stone Fruit Leaf Curl, Shot Hole, Bladder Plum


Correct timing is critical for effective control. Apply when buds are swelling but BEFORE and within ONE WEEK OF BUD OPENING, with a second application of 70 – 90 g/100 L of water 10 - 14 days later.

Stone Fruit Bacterial blast 312 (minimum 6.25 kg/ha)

Apply at leaf fall and repeat at monthly intervals throughout the winter until bud movement, then treat as for leaf curl.

Tamarillo Leaf Spot 70 (minimum 0.9 kg/ha)

Apply as necessary.

Tomato Early Blight, Late Blight, Bacterial Speck, Bacterial Spot

70 – 130 (minimum 0.8-1.75kg/ha)

Apply at 7 - 10 day intervals depending on conditions favourable for development of the disease. Ensure spray volumes are increased as crop reaches maximum growth so that full cover spraying of upper and lower leaf surfaces is obtained. Repeat application after more than 13 mm rain or irrigation.

Frost Injury Protection (Bacterial Ice Nucleation Inhibitor)

Application of Kocide® Opti™ made to all crops listed on this label at the rates indicated, 2-5 days prior to anticipated frost conditions, will afford control of ice nucleating bacteria (Pseudomonas syringae, Erwinia herbicola and Pseudomonas fluorescens) and may therefore provide protection against light frost. Not recommended for those geographical areas where weather conditions favour severe frost.

Always read and follow label directionsRegistered pursuant to the ACVM Act 1997. P007726Copyright© 2015 DuPont. All rights reserved. DuPont (New Zealand) Limited (Private Bag 76911, Manukau City 2241). The DuPont Oval Logo, DuPont™, BioActive™ and Opti™ are registered trademarks or trademarks of DuPont or its affiliates. Kocide® is a registered trademark of Kocide LLC. 1Blue Shield is a trademark or registered trademark of Bayer CropScience. 2Champ is a trademark or registered trademark of Nufarm Limited.


Head Office Customer Services Representative, Auckland

Freephone 0800 65 8080

TERRITORY MANAGERS MOBILE EMAIL

Upper North Island Raeleen Watherston 027 493 4216 [email protected]

Lower North Island Hayden Toy 027 442 4990 [email protected]

Upper South Island John Smith 027 432 3226 [email protected]

Lower South Island Stan McKay 027 432 3222 [email protected]

Crop Protection Territory Managers:

Less applied copper, more protection.Kinder on the environment.

DuPont™

Kocide® Opti™

FUNG I C I DE / BACTER I C I DE

less applied copper, dupont kocide opti ™ kocide ® opti fungicide / bactericide for the control...

Documents