Pacaya Flazasulfuron 50g - Herbicide

Unavailable. Please see alternative: Valdor Flex

Weeds Controlled

Product Overview
Product Type	Herbicide
Product Name	Pacaya
MAPP No.	16797
Active Substances	Flazasulfuron
Formulation	Water dispersible granule
Areas of Use	Natural surfaces not intended to bear vegetation, permeable surfaces overlying soil, hard surfaces (railway ballast only), amenity vegetation (around)
Amateur/Professional	Professional

Pacaya is a long-lasting herbicide which requires just one application per year.  

It is renowned for controlling several broad spectrum annual and perennial broad-leaved weeds and grasses on natural surfaces not intended to bear vegetation, permeable surfaces overlying soil, hard surfaces (railway ballast only), and around amenity vegetation. 

Once applied, this residual herbicide remains active on surfaces for up to 5 months and is suitable for use on several non-crop surfaces as well as around amenity vegetation.  

Pacaya prevents the emergence of susceptible broad-leaved and grass weed species. 

Please note that Pacaya does have a limited effect on very young weeds. It should be tank mixed with glyphosate for effective post-emergence as well as the long-lasting residual activity of Pacaya. 

For maximum results ensure that the surface is undisturbed after application. This will help the barrier effect created by Pacaya to remain active. This surface barrier prevents germination of a wide range of broad-leaved and grass weeds. 

A 50g bottle will treat an area of 3,333m² for up to 5 months. 

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Target Species

Pacaya gives pre-emergence control by forming a surface barrier that prevents germination of a wide range of broad-leaved and grass weeds.

*A limited number of weed species are not effectively controlled by Pacaya (see label for further details).

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Instructions for use

Where to use

Natural surfaces not intended to bear vegetation - Areas of soil or natural outcroppings of rock that are not intended to bear vegetation. 

Permeable surfaces overlying soil - Any man-made permeable surface (excluding railway ballast) that overlies soil and is not intended to bear vegetation. 

Hard surfaces (railway ballast only) - Any railway ballast impermeable surface that is not intended to bear vegetation. 

Amenity vegetation (around) - Any areas of semi natural or ornamental vegetation, including trees (see product label for susceptible non-target plants) 

When to use

For best results apply Pacaya in the early to late spring before weeds the have germinated. 

Application Window
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

How to use

Maximum Treatments	Pack Coverage	Application Method	Application Rates	Water Volume	Spray Quality
1 per annum	3333m2	Conventional knapsack sprayer Vehicle mounted sprayer	150g/ha	200-600 l/ha	Medium

1. Use clean water to half fill the spray tank. 

2. Apply the required quantity of product. 

3. Agitate the spray tank. 

4. Fill the rest of the spray tank with water to top the mixture up. 

5. Apply immediately. 

6. Do not cultivate or rake the area following application. 

7. Clean equipment with a diluted ammonia solution following use. 

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Additional Information

Before each spraying operation please ensure that you carry out a Local Environment Risk Assessment for Pesticides (LERAP) in accordance with CRD’s published guidance.  

Only use Pacaya on natural or porous surfaces such as gravel or railway ballast surfaces.  

Ensure that the underlying surface is soil. 

Do not apply to non-porous man-made surfaces. 

Ensure the product does not come into contact with non-target plants. 

Do not apply near species that have been planted for less than 2 years. 

Do not allow direct spray to fall within 5 m (horizontal boom and train sprayers) or 1 m (handheld sprayers) of the top of the bank of any static or flowing water body. 

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Active Substances

Flazasulfuron

Bio-Chemical Mode of Action: Flazasulfuron belongs to the inhibition of Acetolactate Synthase (ALS) group of herbicides.

Acetolactate synthase is an important enzyme involved in the biosynthesis of branched-chain amino acids. ALS inhibitors interrupt this process causing the plant to initially become chlorotic before necrosis of plant tissues followed by whole plant death occurs.

Mobility: Flazasulfuron is a systemic penetrant which means that the active substance can be translocated downwards through the plant within the phloem (sugar conducting tissues) and upwards through the plant within the xylem (water conducting tissues).

Application timing: Residual ALS inhibitors are best applied prior to the emergence of weed species.

Resistance: ALS inhibitor herbicides pose a high-risk of resistance particularly for grass weed species including black-grass, Italian rye-grass and wild oats. To reduce the risk of resistance follow label instructions and rotate use with herbicides with differing modes of action.