Priest 1L – (Same Active as Praxys)

Description

• MAPP No – 21518
• Active Ingredient – 80 g/l clopyralid, 2.5 g/l florasulam and 100 g/l fluroxypyr
• Area Covered – Up to 10,000m2
• Pack Size – 1Ltrs

DESCRIPTION

Priest is a selective, systemic, post-emergence herbicide designed for use in managed amenity turt, lawns, and amenity grassland. It combines three modern active ingredients with two different modes of action, delivering fast and complete control of broad-leaved weeds.

Key Features:
Systemic action: Translocates through the entire plant for complete kill, including roots
Rainfast within 1 hour
High selectivity: Safe on established and young turf (can be used 8 weeks post-germination)

Flexible application window: March to October, when weeds are actively growing
Reseeding possible just 3 days after application Maximum 1 application per year

Application Guidelines:
Avoid mowing 3 days before and 3 days after treatment
Boom Sprayer Rate: 1.0 – 2.0 L/ha
Knapsack Rate: 10 – 20 ml in 2 L of water treats 100 m2

Weeds controlled 

Birds foot, trefoil, black medick, bristly oxtounge, common cat’s-ear, creeping cinque foil, sorrell, white clover, common daisy, common dandelion, greater plantain, common mouse-ear, ribwort plantain, self heal, creeping buttercup, spear thistle

Additional Information

• Do not use where clippings are collected for use in mulch, compost or green waste
• Do not use on land that will be grazed by livestock or where vegetation will be used for animal feed or bedding within 12 months of treatment
• Avoid contact with non-target plants
• Allow an interval of four weeks between application and re-seeding
• Avoid applying when turf is wet or under stress

Active Substances

Clopyralid and Fluroxypyr

Bio-Chemical Mode of Action: Clopyralid and Fluroxypyr belong to the synthetic auxins group of herbicides.

Synthetic auxins work by inducing rapid abnormal cell growth and development in the stems, petioles and leaves of susceptible plants causing cell bursts and ultimately cell and plant death.

Mobility: Clopyralid and Fluroxypyr are systemic penetrants 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: Systemic auxins are best applied when the weeds are actively growing. They are generally more effective when target plants are younger and in their vegetative phases.

Resistance: The incidences of resistance to synthetic auxins remains relatively low which is assumed to be because the herbicide has multiple sites of action.

However, resistance to synthetic auxins has been observed globally with 36 species being confirmed as resistant as of 2017. Best management practices, such as alternating with products with a different mode of action and using cultural weed control methods, will help to reduce the risk of further resistance.

Florasulam

Bio-Chemical Mode of Action: Florasulam belongs to the ALS (Acetolactate Synthase) Inhibitors 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: Florasulam 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: ALS inhibitors are best applied when the weeds are actively growing. They are generally more effective when target plants are younger and in their vegetative phases.

Resistance: Resistance to ALS inhibitors is a relatively frequent occurrence due to their high activity on sensitive biotypes and soil residual activity. Best management practices, such as alternating with products with a different mode of action and using cultural weed control methods, will help to reduce the risk of further resistance.