Group 4 (Phenylamides) + Group M03 (Multi-site contact activity)
Target Organisms
Oomycetes fungi (Downy Mildew, Late Blight, Damping Off, Phytophthora Rot)
Mode of Action
Component
Action Type
Function
Metalaxyl (8%)
Systemic
Absorbed rapidly by leaves, stems, and roots. It translocates upward inside the plant system to inhibit fungal RNA synthesis and stop internal mycelial growth.
Mancozeb (64%)
Contact
Stays on the outer plant surface to form a protective barrier. It disrupts enzyme activity across multiple sites in the fungal cell, preventing spore germination.