Parity, CS (permethrin, 500 g/l)

Engineering the "Protective Screen": The Mechanics of Paritet CS

For large-scale vegetable and industrial crop protection, the window of opportunity is narrow. Paritet, SC (prometryn, 500 g/l), manufactured by Nanjing Essence Fine-Chemical Co. Ltd, is a high-performance soil-applied herbicide designed to lock the germination zone against competitive weeds.

The Chemistry of Selectivity

At the core of the product is Prometryn, a triazine compound. Its chemical architecture targets the photosynthetic machinery of weeds. Because Paritet is a systemic herbicide, it enters the plant through the root system and hypocotyls during the germination phase. This ensures that annual broadleaf and grass weeds are neutralized before they can emerge to compete with the crop for light, water, and nutrients.

Paritet provides reliable selective protection for a wide range of crops, including:

• Oilseeds: Soybeans and sunflowers.
• Vegetables & Spices: Potatoes, carrots, and coriander.
• Legumes: Field peas.

Operational Guidelines

The suspension concentrate (SC) formulation is engineered for optimal stability and compatibility in tank mixes, ensuring uniform coverage across the field surface. Rated as Class 3 in terms of toxicity, the product requires standard professional handling procedures.

The efficacy of a soil-applied herbicide is highly dependent on environmental conditions. Since Paritet is applied pre-emergence, soil moisture is the primary variable; the moisture acts as the carrier that distributes the active ingredient in the top 5 cm of the soil profile. Given that the label limits application to one pass per season, precision in dosage relative to soil texture and organic matter content is essential. By creating a persistent, effective barrier at the right time, Paritet eliminates weed interference during the most sensitive early stages of crop development.