Nichino PQZ Insecticide - Pyridine Azomethine - 1 Quart (8/Cs)

PQZ® is a pyridine azomethine insecticide developed for the control of piercing-sucking insect pests in a wide range of vegetable, fruit, nut, and row crops. It is characterized by its rapid action, translaminar movement, and high efficacy in reducing the transmission of plant viruses by target insect vectors. Its favorable environmental and non-target organism profile makes it a designated tool for Integrated Pest Management (IPM) programs.

Chemical Composition and Formulation
The active ingredient is pymetrozine. It is formulated as a suspension concentrate (SC) for dilution and foliar application.

Mode of Action
Pymetrozine acts as a selective feeding blocker, specifically affecting the cibarial pump mechanism in piercing-sucking insects. This unique mode of action causes rapid cessation of feeding within minutes to hours after contact or ingestion, effectively preventing further direct plant damage and the inoculation of plant pathogens, including viruses. The compound exhibits translaminar activity, moving through leaf tissues to provide protection on surfaces not directly contacted by the spray. It is non-neurotoxic and demonstrates selectivity, preserving populations of beneficial insects such as pollinators and natural predators when used as directed.

Target Pests and Registered Crops
PQZ is specifically effective against key piercing-sucking insect vectors, including aphids and whiteflies.

Primary Registered Crops Include:

• Fruiting Vegetables (Tomatoes, Peppers)

• Cucurbit Vegetables (Melons, Cucumbers)

• Brassica Vegetables

• Leafy Greens

• Citrus

• Pome Fruit

• Stone Fruit

• Tree Nuts (Pecans)

• Cotton

• Grapes

Application Specifications and Protocol
The product is applied as a foliar spray. Specific use rates are dependent on the target crop, pest, and severity of infestation and must be obtained from the official product label.

Application Guidelines:

• Timing: Applications should be initiated based on established scouting thresholds or at the first sign of pest presence to maximize protection against virus transmission.

• Coverage: Thorough and uniform spray coverage is essential for optimal contact activity and translaminar uptake.

• IPM Integration: Due to its selectivity, PQZ can be effectively rotated or combined with other control tactics within a season-long IPM strategy to manage resistance and conserve beneficial arthropods.

Efficacy and Performance Data
Field performance is marked by the rapid halt of insect feeding, leading to a swift reduction in both direct plant stress and the secondary spread of viral diseases. Its residual activity provides continued protection. The insecticide's unique mode of action makes it a valuable option for managing populations resistant to other chemical classes, such as neonicotinoids and pyrethroids.

Regulatory and Safety Profile

• EPA Registration Number: Must be obtained from the current product label.

• Personal Protective Equipment (PPE): Standard PPE for handling concentrate includes long-sleeved shirt, long pants, chemical-resistant gloves, shoes, and socks. Applicators must follow all specific PPE instructions detailed on the label.

• Restricted Entry Interval (REI): The specific REI, typically 12 hours, must be confirmed on the product label for the crop being treated.

• Pre-Harvest Interval (PHI): PHIs vary by crop and must be strictly adhered to as stated on the label.

Storage and Stability
Store in a cool, dry, well-ventilated area away from heat and direct sunlight. Keep container tightly closed. Do not contaminate water sources, food, or feed through storage or disposal.