The new biorational approach against Black Vine Weevil
MAPP no. 18126
Pitcher is the new biorational pesticide for the suppression of Black Vine Weevil eggs and early stage instar larvae. It is approved through an Extension of Authorisation for Minor Use (EAMU) in containerised ornamental plants, both protected and outdoors
Important Information regarding Pitcher®
A minimum period of six weeks should be observed after initial application before any subsequent treatments of Pitcher or beneficial parasitic nematodes can be applied.
Pitcher is not affected by temperature fluctuations unlike some other biological products
Pitcher must be used as part of a integrated pest management regime, please talk to your Technical Area Sales Manager or Distributor Representative for further information.
Pitcher The active ingredient in Pitcher is garlic extract. Contained within the active ingredient are a unique range of Diallyl polysulfides (DAS). It is these compounds that provide the lethal biochemistry.
When a Vine Weevil egg or early stage instar encounters Diallyl polysulfide (DAS) molecules they penetrate through the skin
Rate of passage through the cuticle is dependent on sulphur chain length
Once the DAS dissolve through the cuticle of the organism the lethal biochemistry start
The action of DAS is initiated following a reaction with intracellular low molecular weight thiols (LMT’s) and protein thiols in the organism
This leads to a cascade chain reaction within the organism which it can’t regulate causing it to die due to overwhelming oxidative stress
The oxidative stress affects many cellular processes so it is very unlikely that resistance could ever evolve to the chemistry
Pitcher is a granular biorational insecticide which is applied as a topdress over containerised ornamentals. Application can be via gloved hand (not a preferred method of application) or a suitable handheld application device.
When to apply
It is important to know when to apply Pitcher for maximum efficacy and therefore understanding the Vine Weevil life cycle is a key part of utilising this product.
It is important to note that all stages of the lifecycle can be present throughout the year in protected crops. It is important that you check your plants in these situations for the pest.