PhozGuard 620 - Systemic Fungicide for Downy Mildew & Phytophthora Control

High-strength mono- and di-potassium phosphonate fungicide for broad-spectrum disease protection

PhozGuard 620 is a powerful liquid systemic fungicide formulated with high-purity mono and dipotassium phosphonates for maximum prevention and control of Downy Mildew and Phytophthora-related diseases. Designed for superior translocation, this formulation moves rapidly through the plant’s vascular system, offering deep internal protection and rapid suppression of infection across leaves, stems and roots.
Produced from a non-toxic potassium phosphite base, PhozGuard 620 supports healthier plants, enhanced defence responses and sustained disease resistance while remaining compatible with a wide range of agricultural chemicals—reducing spray applications and improving field efficiency. With industry-leading concentration, growers can achieve reliable protection using less product, saving both time and packaging costs.

Uses - For Vineyards, Orchards, Vegetables & Horticultural Crops

PhozGuard 620 is used to prevent and control Downy Mildew, Phytophthora root rot, trunk disease pathogens and other related fungal threats across a wide range of crops. Its fully systemic action ensures complete internal coverage, making it effective for disease recovery, early intervention and long-term management programs. Ideal for grapes, citrus, avocados, berries, ornamentals and other susceptible plant species.

Technical Specifications

Specification	Value
Product Name	PhozGuard 620
Active Ingredients	Mono & Dipotassium Phosphonates (620 g/L equivalent phosphorous acid)
Mode of Action	Systemic fungicide activating plant immune responses and disrupting pathogen development
Target Diseases	Downy Mildew, Phytophthora and related oomycete pathogens
Base Material	Non-toxic potassium phosphite
Application	Foliar spray or soil application depending on crop and disease pressure
Chemical Compatibility	Mix-compatible with many agricultural pesticides
Regulatory Approval	APVMA Approval No. 66655/54106
Sizes Available	20 L, 200 L, 1000 L

How It Works

PhozGuard 620 is rapidly absorbed into plant tissue, where it travels through the xylem and phloem to protect every part of the plant. Once inside, phosphite molecules activate defence pathways that stimulate both Systemic Acquired Resistance (SAR) and Induced Resistance (IR).
This immune activation triggers the production of defensive compounds such as phytoalexins, enabling the plant to directly attack pathogens while simultaneously preventing new infections. The fungicide suppresses spore germination, halts pathogen spread and enhances long-term plant resilience.

Why Choose This Product

PhozGuard 620 offers one of the highest concentrations of phosphonate fungicide available, ensuring outstanding performance with reduced application volumes. Its powerful systemic activity, strong compatibility profile and dual-action immune stimulation make it ideal for growers requiring reliable protection against Downy Mildew and Phytophthora. By reducing disease pressure and improving plant health, PhozGuard 620 helps maximise crop longevity, yield performance and financial return.

Frequently Asked Questions

Key Features

● Systemic mono & dipotassium phosphonate formulation
● Controls Downy Mildew and Phytophthora diseases
● Fully mobile within the plant’s vascular system
● Activates natural plant immune responses
● Compatible with many agricultural chemicals
● Highest concentration for reduced application rates
● Non-toxic potassium phosphite base