Chemchlor 500 EC

Active Ingredient:
Pretilachlor 50%

Mode of Action:

Pretilachlor is one of the well-known selective herbicide belongs to the chloroacetamide class of herbicide,which inhibits growth and reduces cell division. It is taken up readily by the hypocotyls, mesocotyls and coleoptiles, and, to a lesser extent, by the roots of germinating weeds. It offers reliable pre-emergence & broad spectrum herbicide for control grasses & broadleaf weed of rice.

Crops: Rice

Target weeds:
Application & dosage rate:

Crop Target weed Dosage rate
5 decimal (per 10 lit of water) Per acre    Per ha

(Direct seeded

rice Or rice

under puddled



Echinochloa crus-galli (k¨vgv)  Cyperus esculentus(nj‡` gy_v) Cyperus iria (eo PzPv)        Fimbristylis miliacea(Rqbv) 

Scirpus mucronatus (‡PPiv)               

20 ml 400 ml 1.0 L


Preparation of solution:
Add slowly the required quantity of herbicide to water and stir well with a stick or rod. While preparing large quantity of spray solution, add solution to a bucket half-filled with water, stir and empty this prepared solution into bulk of water

Use instruction:
Apply herbicides prior to weed emergence at 1−3 DAS/DAT.

  • Always mix clean water with herbicides before application. Refrain from using muddy water as this reduces herbicide efficacy.
  • Ensure all equipment, such as spray tanks, booms, and nozzles are well-cleaned after every use.
  • Do not mix herbicides together unless recommended.
  • Apply herbicides at a recommended rate.
  • Remember to wear proper protective equipment (i.e., gloves, breathing mask, goggles, and protective clothing) when spraying.

Pack size: 100 ml & 400 ml

Reg No: AP-1169