Grinfort Pronit, EC (propyzochlor, 720 g/L)

Pre-emergence control: managing weeds before they sprout

When it comes to maintaining clear fields of sunflowers, corn, soybeans, or winter rapeseed, winning the battle against weeds starts long before the crops emerge. Grinfort Pronit, powered by 720 g/l of propyzochlor, acts as an essential insurance policy, ensuring that the crop establishes its root system without facing early-stage competition for nutrients and moisture.

From an operator's perspective, this systemic herbicide is a workhorse. By applying it pre-emergence, we effectively seal the topsoil. The propyzochlor creates a barrier that halts cell division in emerging grass and broad-leaved weeds, preventing them from ever reaching the sunlight.

Field Application and Performance

• Application Rates: The dosage range is 2–3 L/ha. In my experience, while 2 L/ha works on lighter soils with moderate pressure, I prefer pushing toward the 3 L/ha mark on heavier soil types or high-infestation fields to ensure a consistent, long-lasting barrier.
• Soil Interaction: This is a selective, soil-applied herbicide. Performance is directly tied to soil moisture; if you can time the application just before or after a light rain, the efficacy is outstanding. In dry conditions, the setup of your spraying equipment becomes critical to ensure proper incorporation.
• Handling and Compatibility: As an emulsifiable concentrate, it mixes cleanly in the tank. I haven't faced issues with nozzle clogging or sediment buildup, which is a significant relief during the busy planting season when downtime is expensive.

The product, brought to market through the cooperation of TRUSTCHEM (Nanjing) and Agromax, follows standard safety protocols (Class 3 hazard). It is straightforward to handle with proper PPE. Because it is a selective herbicide, it is gentle on the crop while being aggressive toward target weeds, provided the label instructions are followed.

Ultimately, this is a product for the pragmatic farmer who prefers pre-emptive strike tactics. By treating the field once at the right time, you avoid the headache of rescue treatments later in the season.