The Zarai Dawai Technical Guide to Weed Control

To avoid phytotoxicity (crop injury) and ensure a 100% kill rate, you must understand the two primary categories of weedicides:

• Selective Herbicides: These target specific weeds while leaving your main crop (like Wheat or Maize) completely safe. Examples include ZarPlus and Atlantis Super.
• Non-Selective (Total) Herbicides: These kill all vegetation they touch. Formulations like Roundup (Glyphosate) and Paraquat are ideal for land preparation and non-crop areas.

Pre-Emergent vs. Post-Emergent Timing

Herbicide FAQ: The Technical Edge

Q: Why did my herbicide fail?
A: The most common cause is using the wrong nozzle. For herbicides, you must use a Flat Fan Nozzle. This ensures an even, horizontal sheet of spray that covers every weed leaf effectively.

Q: Will today’s herbicide affect my next crop?
A: This is called the “Soil Residual Effect.” Some chemicals, like Atrazine, can stay in the soil and harm follow-up crops. Zarai Dawai provides Residual Timelines to keep your rotations safe.

Q: What is the best spray time?
A: Early morning or late afternoon. Avoid high winds to prevent “Spray Drift” into neighboring fields and ensure no rain is expected within 6 hours.