Grain in grain store

Reldan® 22


Reldan® 22 is a broad-spectrum insecticide for control of insects and mites that infest grain and grain stores. It controls all major pests of stored grain including saw-toothed grain beetle, rust red grain beetle, foreign grain beetle, rust red flour beetle, confused flour beetle, merchant grain beetle, Indian meal moth, warehouse moth, mediterranean flour moth, grain weevil, rice weevil, copra mite, common flour mite and cosmopolitan food mite.


Reldan works by contact, ingestion and fumigant action to achieve fast knockdown and long-term control. It can be used for pre-harvest hygiene of grain stores, as well as on stored grain. Up to 10% of grain yield can be lost to mite and other insect pest damage after harvest. Damage to stored crops includes loss in weight, reduced nutritional value, and lower value due to tainting and insect fragments.


To help prevent these losses, grain stores should be thoroughly cleaned out and treated with RELDAN 22 acaricide and insecticide before harvest. When applied to grain stores, there is no with-holding period for any grains subsequently stored in those premises.



Works by contact, ingestion and fumigant activity


  • Can be used as a pre-harvest grain store treatment or directly onto cereal grain as a protectant admixture.
  • No witholding period for grain store applications.
  • Apply 4 weeks before grain filling begins
          o       For stores intended for oilseed rape: if the store is metal bins allow 4 weeks minimum before loading with oilseed rape. If concrete, this can be reduced to 1 day, but ideally leave 4 weeks between treatment and filing, to allow treatment to work.


A single pre-harvest grain store application offers 6 months protection

Technical Specifications

Product Registration Number:
PCS No. 03623

Active Ingredients:
225 g/litre chlorpyrifos-methyl

Pack Size:
1.0 Litre

Emulsifiable Concentrate

Maximum Individual Dose:
Grain store – 200 ml Reldan 22 /10 litres water/100 m2
Treated grain – 10-20 ml Reldan 22 /1.5 litres water/tonne of grain (see below)

Maximum Total Dose:
One application per batch

Latest Timing:
Grain store – no withholding period
Treated grain – 10 ml rate - no withholding period
Treated grain - 20 ml rate - 90 days before processing

Water Volume:
Grain store – 200 ml Reldan/10 litres water/100 m2
Treated grain – Max. Concentration 20 ml Reldan 22/1.5 litres water/tonne of grain (see below)

  • Application rates are based on grain conveyer throughput:
    - < 5 tonnes per hour apply Reldan in 1.5 L water per tonne of grain
    - > 5 tonnes per hour apply Reldan in 0.75 L water per tonne of grain


For more information, download the product label for Reldan® 22

Reldan® 22 Label

Reldan® 22 safety data sheet

Reldan® 22 Safety Data Sheet

Reldan® 22 Technical Information Sheet

Reldan® 22 Technical Information Sheet

®™Trademarks of Dow AgroSciences, DuPont or Pioneer and their affiliated companies or respective owners.
Use plant protection products safely. Always read the label and product information before use.