Prenum 50 WG

Mechanism of Action: How Pymetrozine Changes the Game

The core of the "Plenum 50 WG" insecticide is the active ingredient pymetrozine at a concentration of 500 g/kg. This represents a unique instrument for agronomists, as it differs fundamentally from traditional neurotoxins that trigger paralysis or rapid mortality in insects. Pymetrozine affects the nervous system of aphids and whiteflies in a specific way: it blocks the insects' ability to feed. Within 15–30 minutes of contact with the treated plant, the pest stops piercing the epidermis and sucking sap, which eliminates the risk of virus transmission and reduces direct crop damage.

Systemic Defense Architecture

The product exhibits pronounced systemic and contact action. Upon reaching the leaf surface, "Plenum 50 WG" is rapidly absorbed by plant tissues and translocated throughout the entire plant, including new growth that may not have been covered by the spray solution. This is critical for protecting crops such as cabbage, tomatoes, or cucumbers, where pests prefer hidden, hard-to-reach zones like the underside of leaves or growing points.

Technical Application Details

• Formulation: Water-dispersible granules ensure excellent solubility and stability of the spray solution, preventing sprayer nozzle clogging.
• Application Rate: The effective operational range is 0.5–1.0 kg/ha (depending on infestation level and crop type).
• Regulations: Strictly one application per vegetation period is permitted. The pre-harvest interval is 30 days, requiring careful planning of protective measures during early or mid-stages of crop development.

Using this product on winter rapeseed, ornamental plants, and potatoes allows for effective suppression of thrips and whitefly populations, preventing mass reproduction. Classified as a Class 3 hazard, "Plenum 50 WG" serves as a balanced solution for integrated pest management systems, where high selectivity against specific sucking pests is required without causing total harm to beneficial entomophagous insects.