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Spray information

Develop a year-round protective spray plan using KVH recommended products with different modes of action to maximise disease control. Always use label rates to avoid the risk of product resistance or tolerance developing. Success of any spray programme is reliant on good spray coverage.

KVH Recommended Product List

The list below is updated regularly and includes protective spray products that can be used now. 

For a year-round list of spray products and rates click here.

KVH Best Practice Advice: Managing resistance to Psa control products

Only products with ACVM registration for Psa-V efficacy are listed.

Product Name
Type
Rate/100L Use period BioGro Status
Nordox 75 WG™ Copper 55 - 70g (winter) Full label claim. Full season. Do not apply to open flowers. 7 days PHI* Certified
AG Copp 75 Copper 55 - 70g (winter) Limited label claim. Manufacturers recommend applying alone post flowering to reduce risk of fruit marking or leaf damage. Certified
Kocide® Opti™ Copper 70–90g

 Full label claim. Full season. Do not apply to open flowers. 7 days PHI*

Prohibited

ChampION++®

Copper

70-90g

Full label claim. Full season. Do not apply to open flowers. 7 days PHI* 

Certified

HORTCARE® Copper Hydroxide 300 Copper

70g – 90g (winter)

Limited label claim. Full season. Do not apply to open flowers. 7 days PHI* Certified
Coptyzin 'TEPA' Chelated Copper 1.5l/ha (winter) Limited label claim. Full season. Do not apply to open flowers. 7 days PHI* Prohibited

Champ® DP 

Copper

107 - 140g
(winter)

Limited label claim. Manufacturers do not recommend use during post-flowering to harvest.

Prohibited

Tri-base Blue

Copper

280ml
(winter)

Limited label claim. Manufacturers do not recommend use during post-flowering to harvest.

Prohibited

Botryzen™ Biological 600g Limited label claim. Apply post-harvest in program with other products. More suited to lower risk situations. Certified
Kiwivax™ Biological 20g Limited label claim. Apply a minimum 200g/ha. Apply post-harvest in a program with other products. More suited to lower risk situations. Certified

* PHI (Pre-Harvest Interval)

Psa protectant products
Products can be grouped into one of five categories.

1. Copper

Copper sprays are used in many horticultural industries to protect foliage and fruit from a range of diseases. Successful disease control depends on both an even distribution, and good retention of the copper across all plant surfaces. Copper is most effective on those diseases that need water present to develop—such as Psa-V. Click on the link below for more information.

2. Bactericides

Bactericides have very strict use conditions. Misuse of  bactericides can result in fruit residue and/or resistance developing.  Always refer to the User Guides. Bactericides should always be used in a spray programme with other recommended products with different modes of action. Alternate between bactericides to minimise risk of resistance. Bactericides should only be used in high-risk situations and where Psa-V is present.

3. Elicitors

Elicitors are products that induce the plants defence mechanisms allowing them to fight infection. Generally, there is a time delay between the spray application and the elicitor effect being activated. The effect is relatively short term requiring additional applications. Knowing beforehand when an infection will happen and applying the elicitor appropriately is likely to be the key to success. Use Elicitors carefully as overuse can induce the plants to shut down resulting in decreased plant growth.

4. Biological control agents

Biological control agents are more suited to use where disease risk is lower. Their mode of action is the same as copper sprays; acting as a protectant. They can provide this in a number of ways including:

  • occupying the sites the pathogen would normally reside in;
  • competing against the pathogen for food; and
  • producing anti-bacterial compounds that kill the pathogen.

5. CPPU products

The specific mode of action of CPPU products is unknown. There is a time delay between the spray application and the CPPU effect being activated. Apply before leaf spot symptoms are seen. No efficacy in reducing flower bud loss. 

Additional spray resources:

LINK TO ZESPRI SPRAY TECHBOX

Additional resources for assessing spray coverage

Reminder to comply with Regional Council rules when spraying
Growers are reminded to comply with Regional Council rules when spraying. More information can be found on the NZKGI website.

 

Kiwifruit Vine Health

Suite 3, Level 1, Customhouse Building
314 Maunganui Road, Mount Maunganui
(entrance cnr Totara and Rata Street)
PO Box 4246, Mount Maunganui, 3149
New Zealand

Tel:  0800 665 825
Fax: 07 574 7591

Email: info@kvh.org.nz