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New SDHI fungicide launched at recent AGCSA Conference

Golf
30.06.2017
Syngenta Stand AGCSA 2017

Innovation in the turf industry is necessary to ensure that turf surfaces are maintained at consistently high levels in a sustainable manner. At the AGCSA conference held on the Sunshine Coast at the end of June, Syngenta introduced VELISTA, a broad spectrum fungicide that is a critical innovation in turf management.

 

OUT OF THIS WORLD FUNGICIDE ROTATION

This was the theme of the stand and the VELISTA related materials. VELISTA contains a new active ingredient, Penthiopyrad, a SDHI (Succinate Dehydrogenase Respiration Inhibitor) fungicide with a novel mode of action making it a powerful rotation partner.

VELISTA is not cross resistant with other classes of chemistry and can be used all year round, reducing our reliance on the FRAC Group 11 Strobilurin or Qols such as products containing azoxystrobin, trifloxistrobin. These products are available in many formulations these days including Syngenta’s HERITAGE MAXX and HEADWAY MAXX. Group 11 fungicides are now used widely in turf grass management and provide excellent results, however they are susceptible to incurring resistance. The introduction of VELISTA as a broad spectrum Group 7 arrives at a critical time, offering a very important efficacious rotation partner for the Group 11 fungicides. VELISTA can be trusted to keep your greens in excellent condition when high temperatures and high humidity hit your facility.

VELISTA works by blocking the pathogen cell’s energy production and shutting down any further spore or fungal growth. VELISTA moves into the turf grass leaves and roots providing excellent residual activity which is ideal for preventative applications.

Importantly VELISTA does not exhibit any growth retardant properties to turf grass and has shown no phytotoxicity in Australian and USA trials. It can therefore, be used in the middle of summer without any threat of burning or slowing of turf grass growth.

VELISTA is also rainfast once the leaf surface has dried. The active ingredient will then move into the plant via the translaminar and systemic action, moving into and up in the xylem.

 

DIFFERENTIATING MODE OF ACTION

Penthiopyrad is the active ingredient in VELISTA and as mentioned is in the FRAC Group 7 (SDHI: Succinate Dehydrogenase Inhibitors). For more information regarding fungicide groups and resistance management strategies visit the Croplife website

VELISTA works by blocking the pathogen cell’s energy production and shutting down any further spore or fungal growth. VELISTA moves into the turf grass leaves and roots providing excellent residual activity which is ideal for preventative applications.

 

Shutting down the energy super highway

Binds to protein complex in the mitochondria – stopping pathogen energy production

How VELISTA works

VELISTA controls fungal plant diseases by blocking respiration through a mode of action different from most fungicides currently on the market. The inhibition of respiration due to energy deprivation, stops the spore germination and mycelia growth necessary for infection. By binding to the protein succinate dehydrogenase in respiratory complex II, penthiopyrad inhibits one critical respiratory pathway, causing the desiccation of the fungal spores.

The mode of action is important for turfgrass managers to be aware of, as it reinforces that once again, prevention and early application in the disease cycle is critical to reducing the fungal population and reducing the amount of scarring left on greens due to fungal outbreaks.

 

GETTING THE MOST OUT OF VELISTA

It is important to target the VELISTA application where you want to protect against disease on and within your turf. Begin applications prior to or at the early stages of disease development. Use the higher rate and/or shorter intervals when conditions continue to favour disease.

For foliar and crown diseases like Anthracnose and Dollar Spot, apply to the crown in approx. 400 L of water/ha. This will allow VELISTA to enter at the crown and leaf and move locally within the plant, protecting and treating for crown and leaf diseases.

For the control of root diseases such as Spring Dead Spot and Brown Patch root infections, applications should be made at 600 L and watered into the root zone. VELISTA’s local movement within the plant means it will not move into the leaf from theroots. This enables the active ingredient to remain in the roots and root zone offering greater protection and longevity to control turf grass root diseases.

MIXING AND ROTATION

VELISTA is an excellent product to place into a rotation with HERITAGE MAXX to ensure a solid preventative approach for root diseases.  When looking for preventative action for leaf diseases a VELISTA program that includes INSTRATA or MEDALLION will provide excellent results.

VELISTA should be your rotation partner of choice for disease prevention and control programs when the weather conditions shift from warm to hot and summer stresses begin to apply to both Couch and Bent/Poa greens.

 

WH&S AND ENVIRONMENT

The signal heading for VELISTA is 
CAUTION KEEP OUT OF REACH OF CHILDREN
READ SAFETY DIRECTIONS BEFORE OPENING OR USING.

Importantly this signal heading is suitable for use for most local government authorities in Australia. VELISTA reduces exposure to users as the rates of product applied are low at 1.5 kg/ha reducing the need to mix large volumes of fungicide per application. VELISTA also offers a low AI load per ha compared with older chemistries to achieve control of turfgrass diseases.

VELISTA is a convenient to use WDG (water dispersible granule) formulation with a low use rate predicted to be at 1.5 kg/ha. This formulation is designed to reduce packaging and the environmental footprint of VELISTA.