Disease management

Fungicide efficacy and use

Fungicide

Botrytis grey mould (BGM)

Ascochyta blight (AB)

Critical use periods'

Efficacy

Use if BGM risk

Efficacy

Use if AB risk

When to use

(1) Carbendazim

***

Med-high

-

Nil

First to third

(2) Procymidone

***

Med-high

-

Nil

First to third

(3) Chlorothalonil

**

Low-med

***

Low-high

First to third

(4) Mancozeb

*

Low-med

**

Low-high

First to third

(5) Carbendazim + chlorothalonil

***

Med-high

***

Med-high

Second and third

(6) Carbendazim + mancozeb

***

Med-high

**

Low-med

Second and third

(7) Procymidone + chlorothalonil

***

Med-high

***

Med-high

Second and third

(8) Procymidone + mancozeb

***

Med-high

**

Low-med

Second and third

 

- No efficacy

*Low efficacy

** Medium efficacy

*** High efficacy