Quazar, EC

Chemical Architecture and Selectivity Mechanism

The core of "Quasar, EC" is quizalofop-P-ethyl, a derivative of aryloxyphenoxypropionates. Unlike broad-spectrum herbicides, this formulation acts as an inhibitor of acetyl-CoA carboxylase (ACCase). This enzyme is crucial for fatty acid synthesis in grass plant cells. By blocking it, the product halts growth in meristematic tissues, providing high selectivity: broadleaf crops, such as fodder beet, remain unaffected due to their distinct biochemical enzymatic structure.

Systemic Dynamics

The emulsifiable concentrate (EC) formulation ensures high penetration through the leaf cuticle. The systemic nature of the product means that upon application, the active ingredient translocates through the phloem directly to the growth points and root system. This is critical for controlling quackgrass: the herbicide reaches deep into the rhizomes, breaking down their structure from within and preventing regrowth during the current season.

Agrotechnical Guidelines

• Application Phase: Applied as a post-emergence foliar herbicide. Maximum efficacy is achieved when weeds are actively growing (2 to 4 leaves for annuals; 10–15 cm in height for perennials).
• Dosage Rate: A flexible range of 0.5–1.5 L/ha allows for intensity adjustment based on the weed pressure level of the field.
• Frequency: Optimized for a single application (1 treatment per season), which effectively lowers the pesticide load on the soil microbiome.

The emulsifiable concentrate formulation of "Quasar, EC" by Nanjing Essence Fine-Chemical Co., Ltd. ensures the stability of the working solution and excellent adhesion to leaf surfaces, minimizing product loss during spraying operations.